Lawn mower shaft extension. Briggs & Stratton Vertical Shaft Small Engines

01.07.2023 Boath extension, lawn, mower, shaft

USRE18944E. Power operated lawn mower. Google Patents

Publication number USRE18944E USRE18944E US18944DE USRE18944E US RE18944 E USRE18944 E US RE18944E US 18944D E US18944D E US 18944DE US RE18944 E USRE18944 E US RE18944E Authority US United States Prior art keywords housing cutter shaft cutting mower Prior art date 1933-09-12 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired Application number Publication date 1933-09-12 Family has litigation First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=2082659utm_source=google_patentutm_medium=platform_linkutm_campaign=public_patent_searchpatent=USRE18944(E) Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License. 1933-09-12 Application granted granted Critical 1933-09-12 Publication of USRE18944E publication Critical patent/USRE18944E/en Status Expired legal-status Critical Current

Images

Classifications

A — HUMAN NECESSITIES
A01 — AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
A01D — HARVESTING; MOWING
A01D34/00 — Mowers; Mowing apparatus of harvesters
A01D34/01 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
A01D34/412 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
A01D34/63 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
A01D34/67 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator
A01D34/68 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
A01D34/6806 — Driving mechanisms

A — HUMAN NECESSITIES
A01 — AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
A01D — HARVESTING; MOWING
A01D34/00 — Mowers; Mowing apparatus of harvesters
A01D34/01 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
A01D34/412 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
A01D34/63 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
A01D34/73 — Cutting apparatus

A — HUMAN NECESSITIES
A01 — AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
A01D — HARVESTING; MOWING
A01D34/00 — Mowers; Mowing apparatus of harvesters
A01D34/01 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
A01D34/412 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
A01D34/63 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
A01D34/76 — Driving mechanisms for the cutters
A01D34/78 — Driving mechanisms for the cutters electric

A — HUMAN NECESSITIES
A01 — AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
A01D — HARVESTING; MOWING
A01D34/00 — Mowers; Mowing apparatus of harvesters
A01D34/01 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
A01D34/412 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
A01D34/63 — Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
A01D34/82 — Other details
A01D34/822 — Devices for guiding or supporting cables

Description

fi p 1933- w. E. BEAZLEY POWER OPERATED LAWN MOWER 3 Sheets- Sheet 1 ATTORNEY Original Filed Jupe 15, 1929 Sept. 12, 1933- w. E. BEAZLEY POWER OPERATED LAWN MOWER Original Filed June 15, 1923/4 Sheets-Sheet 2.Sept. ’12, 1933. w, E, BEAZLEY rowan orzmusp mwm uowan Original Filed June 31.5, 1929 3 Sheets-Sheet 3 v ATTORNEY Reissued. Sept. 12, 1933 Re, v i

POWER OPERATED LAWN MOWER William E. Beazley, St. Petersburg, Fla., assignor to Beazley Power Mower Co. (Incorporated), St. Petersburg, Fla.

7 Claims. (Cl. 56-25) This invention relates to lawn mowers and more Referring to the drawings in detail wherein like particularly to animprovement in power operated characters of reference denote corresponding mowers characterized by the provision of horiparts, the mower as shown comprises a frame, 10 zontally rotatable cutting means together with which is mounted upon an axle 11, and this axle air advancing means for raising the grass or the is supported by wheels 12, so that the frame like up into the field of action of the cutting will be wheel supported. The mile 11 is located means. adjacent one end of the frame, while the opposite The invention resides principally in the parend of the frame includes depending arms 13 beticular manner of combining the.cutting means tween which is mounted a roller 14. This roller 10 and air advancing means with their power drive is designed for the purpose of rolling and leveling and with a housing so constituted as to define a the lawn and has added thereto the weight of the confined air space open at its bottom adjacent mower and the mower operating means. the ground whereby air is advanced upwardly The frame 10 is enclosed within a housing 15 from the ground in the region of the cutting and mounted upon this housing is an electric mo- 15 means through the bottom opening of the. houstor 16. The shaft of this motor extends downing and past the path of movement of said cutting ward within the housing through a suitable bearmeans to draw the grass upwardly and into the ing 17 and this shaft is hollow and has secured field of action of the cutting means. The cutting therein an extension 18. The shaft extension 18 means is so constituted and so combined in the is held in place by a binding screw 19.

20 structure as to exert an eifective and efficient cut- Mounted upon the extension 18 of the motor ting action. shaft are oppositely extending arms 20. These Another object of the invention resides in the arms have secured to their outer ends cutting provision of a simple, efficient and easily handled blades 21 which are horizontally disposed and power driven mower which may be operated at a which have their cutting edges curved as at 22.

26 low cost. It will be apparent that when the motor is oper- Another object of the invention is the provision ated the arms 20 will be rotated so that the blades of a mower having novel means for holding the will be operated to cut the grass or other vegetablades of grass and other vegetation in an erect tion. Due to the curved cutting edges of the position to be acted upon by the cutting blades of blades a shearing action will be provided.

30 the mower, so that the grass will be cut to a uni- Also extending from the shaft extension 18 are form height. oppositely disposed fan blades 23. These blades Another Object of t invention is the DIO- are mounted on a plane above the cutting blades vision of means for adjusting the cutters to regu- 21 and provide suction means to draw the grass. late the height of the cut. blades or other vegetation upward so as to hold 35 th Objects and advantages reside n Ce ta the same erect and materially assist in the ‘cut- 9 novel features of the construction, arrangementting operation. The grass will thus be cut to a and combination of parts which will be hereinuniform height instead of being pushed down after mo fu y described d Particularly and passed over by the blades 21. As the fan Pointed u in t appended Claims. reference blades 23 are within the housing 15, an effective 40 i had to the accompanying drawings, and suction will be provided for raising the grass.

formingapart of this specification, and in which: The bl 20 and 23 may be vertically Figure 1 is a side elevation of a lawn mower justed upon the shaft extension 18 through the, constructed in accordance with the invention; medium of adjusting nuts 24 and 25. The arms Figure 2 is a longitudinal sectional view; 13, between which the roller 14 is mounted are 45 Figure 3 is a top plan view; connected with the axle 11 by means of brace Figure 4 is a section on the line 4-4 of Figrods 26. ure 3; Pivotally mounted upon the housing 15 be- F u 5 is a detail section 011 the line tween spaced cars 27 is a handle 28. This han- Figure dle extends downward through a slot 29 provided 50 F u 6 is a section 011 the line of in the housing so that it may be tilted upward ure 3′; if desired.

Figure ‘1 is a side View showing a slightly In order to supply current for the motor there ferent form of the invention; and is provided a cable 30 which may be connected 55 Figure 8 is a front view of the mower shown with a suitable source of current. This cable is no in Figure 7. connected with a controlling switch 31 which is mounted upon the handle 28 and is wound upon a reel 32 so as to permit the mower to be moved over a relatively large area. Suitable connection 33 is provided-between the reel and the motor 16.

If desired, the mower may be operated through the medium of an internal combustion engine as shown at 34 in Figures 7 and 8 of the drawings. This engine is mounted in a saddle or frame 35 which rises from the housing 15 and the power shaft of the engine drives a vertically disposed shaft 36 through the medium of gears 37. The arms 20 and 23 are mounted upon this shaft 36. I

The fiy wheel of the engine is indicated at 38 while the carburetor is shown at 39 and fuel from this carburetor is supplied from a tank 40 which is mounted’upon ,the handle 28, a fuel supply pipe 41 being provided for this purpose.

A suitable battery is contained within a battery box 42 which is also mounted upon the handle and current is supplied to the ignition device 43 of the engine through a cable 44. A

In the first described form of the invention where current for the operation of the mower is supplied through a cable 30, means are provided for keeping the cable out of the way of the wheels. This arm which is indicated at 46 is pivotally and adjustably-secured to the handle 28 by means of a bolt 47, so that it may be swung laterally to either side of the handle. The outer end of this arm carries a spring clip 48 which is adapted to yieldingly grip the cable 30. The cable may thus be held in position at either side of the handle 28 to prevent entanglement with the wheels of the mower and to clear shrubs, trees and other obstructions.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claims.

The invention claimed is; 1. A power operated lawn mower comprisinga portable carriage, a power source carried by the carriage, a shaft driven by the power source and depending therefrom under the carriage, oppositely disposed and downwardly curved arms having the inner ends thereof adjustably secured to the shaft, cutting blades secured to the arms adjacent the free ends thereof and having curved cutting edges disposed laterally of the arms, and oppositely disposed fan blades adjustably secured to the shaft above the cutting blades to create a suction to the uncut grass to draw the grass into the path of rotation of the cutting blades.

A power operated lawn mower comprising a wheeled frame, a housing carried by said frame and having substantially imperforate top, sides and ends and an open bottom, said housing defining a confined air space, a vertical shaft extending down into said space, a motor connected to said shaft for rotating the same, blade type cutters having lateral cutting edges andifcarried by said shaft and disposed to rotate in a substantially horizontal path, and means rotated with said shaft and located within said housing for creating currents of air in said housing and upwardly through the path of rotation of said cutters to draw the grass up into the field of I action of said cutters.

Easy Shaft Adapters

the ground, a vertical shaft extending down into said air space, a motor connected to said shaft for rotating the same, a blade type cutter having a lateral cutting edge carried by said shaft and disposed to rotate in a substantially horizontal path adjacent the bottom opening of the housing, and a fan blade driven by said shaft and rotatable with said cutter and having an air defiecting surface for advancing air upwardly from the ground into the region of the cutter through the bottom opening of the housing and past the path of movement of the cutter whereby to draw grassupwardly into the field of action of the cutter.

A mower of the character described comprising a mobile frame having a housing defining a confined air space and open at its bottom adjacent the ground, a blade type cutter supported for rotation in a horizontal path adjacent the bottom opening of the housing, means for rotating said cutter, and means rotatable with said cutter and having air deflecting surfaces for advancing air upwardly from the ground in the region of the cutter through the bottom opening of the housing and past the pathof movement of said cutter whereby to draw the grass upwardly and into the field of action of the cutter.

A mower of the character described comprising a mobile frame having a housing defining a confined air space and open at its bottom adjacent the ground, a blade type cutter supported for rotation in a horizontal path adjacent the bottom opening of the housing, means for rotating said cutter, a fan blade disposed adjacent the bottom opening of the housing and rotatable with 110 said cutter about a vertical axis for advancing air upwardly from the ground in the region of the cutter through the bottom opening of the housing and past the path of movement of said cutter whereby to draw the grass upwardly and into the field of action of the cutter.

A power operated lawn mower comprising a mobile carriage having a housing defining a confined air space and open at its bottom adjacent the ground, a power source carried by the carriage, a shaft driven by the power source and depending therefrom into the housing, a horizontally disposed cutting blade secured to the shaft and rotated thereby, said cutting blade having a cutting edge sloping laterally whereby to eifect the cutting of the grass with a sweeping action, and means rotatable with said cutting blade and having air deflecting surfaces for advancing air upwardly from the ground in the region of the cutting blade and past the path of mov’ement thereof whereby to draw the grass upwardly and into the field of action of the cutter.

7.A mower of the character described comprising a mobile frame, a housing thereon defining an air space and openat its bottom adjacent the ground, a vertical shaft extending down into said space, a motor connected to said shaft for rotating the same, a horizontallydisposed double bladed cutter secured to said shaft and rotated thereby adjacent the bottom opening of the housing, said cutter having cutting edges sloping laterally whereby to effect cutting of the grass with a sweeping action, and means rotatable with said cutter for advancing air upwardly from the ground in the region of the cutter through the bottom opening of the housing and past the path of movement of said cutter whereby to draw gras’supwardly and into the field of action of the cutter.

Briggs Stratton Vertical Shaft Small Engines

It’s important to consider the engine when purchasing outdoor power equipment. When you choose power equipment with a Briggs Stratton engine, you’re getting over 90 years of experience and expertise behind it. The engines listed are our economy Briggs Stratton vertical shaft replacement engines. We can get all popular new Briggs Horizontal engines and Short Blocks as well. Please email us if you need a different engine.

See page with Larger Image of 104M02-0197-F1

Briggs Stratton 104M02-0197-F1 725EXi SERIES Engine

104M02-0197-F1 725EXi SERIES™
Supersedes 126M02-1015-F1, 123K02-0015, 123K02-0515, 126T02-0015, 126T02-1015, 104M02-0021-F1

See page with Larger Image of 104M02-0196-F1

Briggs Stratton 104M02-0196-F1 725EXi SERIES Engine

104M02-0196-F1 725EXi SERIES™
Supercedes 104M02-0020-F1, 126L02-1625, 123K02-0025, 123K02-0525, 123K02-0625, 126T02-0625, 126L02-0625, 126L02-1025, 126M02-1025, 126M02-1625

See page with Larger Image of 104M02-0254-F1

Briggs Stratton 104M02-0254-F1 725EXi SERIES Engine

See page with Larger Image of 121P02-0003-F1

Briggs Stratton 121P02-0003-F1 875 ex Series

Briggs Stratton 121P02-0003-F1 875 ex Series 8.75 ft-lbs Gross Torque OHV
Crankshaft Extension: 7/8 x 1.82 length, keyed, with 1 Woodruff Key, Tapped 3/8. 24
Fixed Speed 3800 /-
Has Ready Start
Muffler with stamped guard
Has Heavy Flywheel
Non-Compliance Engine
Check ‘n’ Add Series
Consumer Use: 2 Years
Commercial Use: 90 Days
Dimensional Weight: 47 lbs.
Representative Photo

See page with Larger Image of 21R702-0070-F1

Briggs Stratton 21R702-0070 11.5 HP Intek OHV

Model Number: 21R702-0070 11.5 HP Intek OHV
Supersedes 217902-4020, 217902-0020, 215902-0020
Crankshaft Extension: 1 x 3-5/32 length, Tapped 7/16. 20, 1/4 Keyway
Shipping Weight: 83 lbs.

Applications: Universal replacement engine for MTD, Murray, Snapper, AYP other riding mowers lawn tractors

See page with Larger Image of 21R707-0130-F1

Briggs Stratton 21R707-0130 10.5 HP Intek

Briggs Stratton 21R707-0130-F1 17.5 Torque Engine
Supersedes 217902-4020, 217902-0020, 215902-0020
O.H.V. Single Cylinder Design with AVS
Cast Iron Sleeve
Recoil Start 12 Volt Electric Start with 16 Amp Alternator
1 x 3-5/32 Keyed Crankshaft.
Drilled Tapped 7/16-20.
Has Fuel Pump
2.8 Quart Gas Tank
Has Choke-a-matic
Has Remote Stop Switch
Remote Throttle
Performance Muffler.Muffler Guard NOT included
Shipping weight = 85 lbs

See page with Larger Image of 21R707-0047-G1

Briggs Stratton 21R707-0047-G1 10.5 H.P.

21R707-0047 10.5 HP Intek OHV
Supersedes 217907-0025, 217907-3025-G5, 215907-0026, 217907-3019, 217907-0019
Cast Iron Sleeve
1 x 3-5/32 crankshaft
Recoil 12 Vt. Electric Start
Dual circuit alternator
No Fuel Tank
No Fuel Pump
Throttle Controls: R
Shipping Weight: 78 lbs

See page with Larger Image of 31R977-0054-G1

Briggs Stratton 31R977-0054 17.5 HP Intek OHV

Briggs Stratton 31R977-0054-G1 17.5 HP Intek OHV (500 CC)
Supersedes 31R977-0027, 31G777-0036, 31G777-3036
Solenoid Carburetor Shutdown
Cast Iron Sleeve
12 Volt Electric Start With 9 Amp Alternator
1 x 3-5/32 Crankshaft With 1/4 Keyway
Drilled Tapped 7/16-20
Has Choke-A-Matic, Oil Filter and Fuel Pump
NO Muffler, NO Gas Tank.
Can be used in place of 31R77-0057, 31S977-0006
Shipping weight = 86 lbs

See page with Larger Image of 31R977-0029-G1

Briggs Stratton 31R977-0029-G1 fka 31P777-3202 17.5 HP

Model Number: 31R977-0029-G1
Supersedes 31H777-0202, 31P777-0202, 31P777-3202
Cast Iron Sleeve
Pressure lubrication with spin-on oil filter
1 x 3-5/32 Crankshaft with keyway, Tapped 7/16. 20, 1/4
Used by Sears Craftsman
No fuel tank and no muffler
12 Volt Electric start with Dual Alternator

See page with Larger Image of 31R907-0007-G1

Briggs Stratton 31R907-0007-G1 17.5 HP Intek OHV

Model Number: 31R907-0007-G1
Supersedes 31G707-0026, 31G707-3026, 285H07-0026, 31C707-3026-G5
Shipping Weight: 88 lbs.
Crankshaft Extension: 1 x 3-5/32 Length, Tapped 7/16. 20, 1/4 Keyway

Applications: Universal replacement engine for lawn tractors, garden tractors wide area walk behinds

See page with Larger Image of 33S877-0017-G1

Briggs Stratton 33S877-0017-G1

Model Number: 33S877-0017-G1 Professional Series OHV
Supercedes 31L777-0036, 31L777-0136, 31L777-3136, 31S977-0006-G1
Crankshaft Extension: 1 x 3-5/32 Length, Tapped 7/16. 20, 1/4 Keyway
Shipping Weight: 90 lbs.

Applications: Universal replacement engine for MTD, Murray, Snapper, AYP other riding mowers tractors

See page with Larger Image of 356776-0013-G1

Briggs Stratton 356776-0013-G1 18 HP Vanguard Series OHV

Model Number: 356776-0013-G1
Supersedes 356776-0006-G1, 356776-0046 AKA 350776-1046, 356776-3046
Crankshaft Extension: 1 x 3-5/32 Length, Tapped 7/16. 20, 1/4 Keyway
Shipping Weight: 120 lbs.

Applications: Commercial Wide-Area Walk Mowers, Zero Turn Mowers ZTR, Lawn Tractors

See page with Larger Image of 356777-0154-G1

Briggs Stratton 356777-0154-G1 18 HP Vanguard Series OHV

Model Number: 356777-0154-G1
Supersedes 305777-3032. 305777-0032, 356777-0034, 356777-3034, 356777-3137
Crankshaft Extension: 1 x 3-5/32 Length, Tapped 7/16. 20, 1/4 Keyway
Shipping Weight: 120 lbs.

See page with Larger Image of 386777-0144-G1

Briggs Stratton 386777-0144-G1 23 HP Vanguard

See page with Larger Image of 356777-0154-G1

Briggs Stratton 356777-0154-KC 18 HP Vanguard Series OHV

Model Number: 356777-0154-KC
NOTE: There is VERY LIMITED availability of this engine, at this price, please email to ask about availability before buying
Supersedes 305777-3032. 305777-0032, 356777-0034, 356777-3034, 356777-3137
Crankshaft Extension: 1 x 3-5/32 Length, Tapped 7/16. 20, 1/4 Keyway
Shipping Weight: 120 lbs.

See page with Larger Image of 386777-0141-G1

Briggs Stratton 386777-0141-G1 23 HP Vanguard

386777-0141-G1 23 HP Vanguard
Supersedes 386777-3026-G1, 386777-0146-G1
1-1/8 x 4 Crankshaft Tapped 7/16-20
16 amp alternator
Has Oil Filter
No Muffler. No Tank

See page with Larger Image of 33S877-0019-G1

Briggs Stratton 33S877-0019-G1 fka 33R877-0003

33S877-0019-G1 19 HP
Supersedes 33R877-0003, 331977-0001, 331877-3036 331877-0036, 33M777-3036, 33M777-0036
1 x 3-5/32 crankshaft, Tapped 7/16-20 with Keyway
This engine Supersedes the previously marked 21 HP engine. It has the same power as the 21 HP engine. HP difference is based on new testing procedures that require an engine to achieve 95% of the HP rating as opposed to the old testing procedure that required only 85%
Can be used in place of 31L777-0136
Factory Warranty: Consumer Use: 2 years, Commercial Use: 1 year
Dura-Bore cast iron cylinder sleeve for extended life
Float carburetor for consistent easy starting
Pulse fuel pump
Maintenance-free Magnetron electronic ignition for quick, dependable starts
Has Choke-a-matic
Dual-Clean air cleaner pleated paper filter with a foam pre-cleaner ensures maximum protection for extended engine life
No Muffler. No Tank
Electric Start with 9 amp charging system
Shipping weight 85 lbs

See page with Larger Image of 33S877-0043

Briggs Stratton 33S877-0043 19 HP Professional Series OHV

33S877-0043 19 HP Professional Series OHV 540 CC
1 x 3-5/32 crankshaft, Tapped 7/16-20 with Keyway
12 Volt Electric Start with 9 AMP Alternator
Has Choke-a-matic
Has Oil Filter Fuel Pump
Has Performance Muffler. NO TANK
Dura-Bore cast iron cylinder sleeve for extended life
Factory Warranty: Consumer Use: 2 years, Commercial Use: 1 year
Shipping weight 88 lbs

See page with Larger Image of 40N877-0087

Briggs Stratton 40N877-0087 20 HP Intek OHV

Model Number: 40N877-0087 20 HP Intek OHV
12 Volt Electric Start
9 Amp Alternator.
1 x 3-5/32 Keyed Crankshaft.
Drilled Tapped 7/16-20.
Has Fuel Pump
Has Oil Filter
Has Choke-a-matic
No Tank.
No muffler. NO TRIM RING
Shipping weight = 96 lbs
Will work in place of 44N877-0013
Consumer Use: 2 Years
Commercial Use: 1 Year Muffler 696226, for 400000 Series enginesEngines that muffler 696226 was used onNote: A lot of the time mufflers are made by the OEM (tractor manufacturer) for use specifically with the tractor in question. muffler choices for 44 49 Series engines

See page with Larger Image of 40U877-0026-G1

Briggs Stratton 40U877-0026 20 HP 656CC Professional Series

Briggs Stratton 40U877-0026 20 HP Professional Series
Crankshaft Extension: 1-1/8 x 4-5/16 Length, Tapped 7/16. 20, 1/4 Keyway

Applications: Universal replacement engine for premium lawn garden Applications

See page with Larger Image of 44U777-0015-G1

Briggs Stratton 44U777-0015-G1 23 HP Professional Series

Briggs Stratton 44U777-0015-G1 23 HP Professional Series 724CC
12 Volt Electric Start
16 Amp Alternator.
1-1/8 x 4-5/16 Keyed Crankshaft.
Drilled Tapped 7/16-20.
Has Fuel Pump
Oil Filter
Has Remote Choke
No Tank.
No muffler.
Shipping weight = 110 lbs
Consumer Use: 2 Years
Commercial Use: 1 Year Muffler 696226, for 400000 Series enginesEngines that muffler 696226 was used onNote: A lot of the time mufflers are made by the OEM (tractor manufacturer) for use specifically with the tractor in question. muffler choices for 44 49 Series engines

See page with Larger Image of 49T877-0024-G1

Briggs Stratton 49T877-0024-G1 27 HP Commercial Series

49T877-0024-G1 27 Gross HP Commercial Series
Can be used in place of 49T877-0017
1 x 3-5/32 Crankshaft
Tapped 7/16-20 With 1/4 Keyway
Dura Bore Cylinders
Cyclonic Air Cleaner
Heavy Duty 12 volt starter with 16 amp DC alternator with regulator
Has Choke-a-Matic
Has Oil Cooler
Includes Premium Oil Filter Fuel pump
Shipping weight 120 lbs

Applications: Universal replacement engine for premium lawn garden

See page with Larger Image of 40T876-0009-G1

Briggs Stratton 40T876-0009-G1 20 HP Commercial Series

Briggs Stratton 40T876-0009-G1 20 HP Commercial Series
Supersedes 40T876-0002-G1
1 x 3-5/32 Crankshaft, Tapped 7/16-20, With Keyway
Warranty: Consumer Use: 2 years, Commercial Use: 2 years
Heavy Duty Recoil Starter with 9 amp batteryless DC alternator (for electric clutch)
Ideal for wide area walk mower repowers
Cyclonic air filtration 5 step debris management system
Full pressure lubrication system with spin on oil filter for controlled lubrication and oil cooler
Muffler Options include Part number 595822 (side mount) or Part number 594585 (below deck) Not Included. Must be purchased separately
This engine is shipped via truck to a business address or the nearest truck terminal. You normally have 5 business days to pick up at the terminal. Residential shipping is 95 extra. Please email us in advance of trying to ship this engine to a residence so we can explain the options.

See page with Larger Image of 49T877-0004-G1

Briggs Stratton 49T877-0004-G1 27 HP Commercial Series fka 49M977-1036

49T877-0004-G1 27 Gross HP Commercial Series
Supersedes 49M977-0036, 49M977-1036 30 HP, 49T877-0004
This engine Supersedes the previously marked 30 HP engine. It has the same power as the 30 HP engine. HP difference is based on new testing procedures that require an engine to achieve 95% of the HP rating as opposed to the old testing procedure that required only 85%
1-1/8 x 4-5/16 Crankshaft
Tapped 7/16-20 With 1/4 Keyway
Dura Bore Cylinders DU PTO bearing
Heavy Duty 12 volt starter
16- amp DC alternator with regulator
Includes Oil Cooler Fuel pump
Shipping weight 120 lbs

Applications: Universal replacement engine for premium lawn garden

See page with Larger Image of 49S877-0008-G1

Briggs Stratton 49S877-0008-G1 27 HP Professional Series

Model Number: 49S877-0008-G1 27 HP Professional Series
Supersedes 49M877-1046, 49M877-1046 30 HP Professional Series. Supersedes 49M877-0046
Can be used in place of 49M777-1296-G1
Crankshaft Extension: 1-1/8 x 4-5/16, Tapped 7/16. 20
12 Volt Electric Start with 16 Amp Alternator
Has Fuel Pump
Remote Controls
Oil filter
No muffler. No tank
Shipping Weight: 120 lbs.

Applications: Universal replacement engine for premium lawn garden

See page with Larger Image of 49S877-0007-G1

Briggs Stratton 49S877-0007-G1 27 HP Professional Series

Model Number: 49S877-0007-G1 27 HP Professional Series
Email us to check for stock before ordering please
Supersedes 49M877-0047, 49M877-1047
Can be used in place of 49M777-1321-G1
Crankshaft Extension: 1 x 3-5/32, Tapped 7/16. 20
12 Volt Electric Start with 16 Amp Alternator
Has Fuel Pump
Remote Controls
Oil filter
No muffler. No tank
Shipping Weight: 120 lbs.

Applications: Universal replacement engine for premium lawn garden

See page with Larger Image of 386777-0143-G1

Briggs Stratton 386777-0143-G1 23 HP Vanguard

Model Number 386777-0143-G1 23 HP Vanguard series
Supersedes 386777-3036, 386777-0149-G1
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V twin OHV
Cast Iron Cylinder Sleeve
12 Volt Electric start 16 amp alternator
1 x 3-5/32 crankshaft with 1/4 keyway
Drilled Tapped 7/16-20
Extended oil dipstick
Has oil pump and oil filter
Has fuel pump
No gas tank
Remote throttle choke
Dual element air cleaner
No muffler

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Briggs Stratton 44T977-0009 25 HP fka 44Q977-0037-G5 Commercial Series

44T977-0009-G1 25 HP fka 44Q977-0037-G5 Commercial Series
This engine is marked as a 25 HP engine. It has the same power as the previously marked 27 HP engine. HP difference is based on new testing procedures that require an engine to achieve 95% of the HP rating as opposed to the old testing procedure that required only 85%
Supersedes 44T877-0001-G1, 44Q977-0037-G5
1 x 3-5/32 Crankshaft, Tapped 7/16-20, With Keyway
Warranty: Consumer Use: 2 years, Commercial Use: 2 years
Dependable float feed type carburetor with integral fuel pump
Electric start 16 Amp charging system
Maintenance-free Magnetron® electronic ignition for quick, dependable starts
Dura-Bore™ cast iron cylinder sleeve
Oil cooler for additional engine life
5-Stage cyclonic air filtration system
This engine is shipped via truck to a business address or the nearest truck terminal. You normally have 5 business days to pick up at the terminal. Residential shipping is 95 extra. Please email us in advance of trying to ship this engine to a residence so we can explain the options.

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Briggs Stratton 49R977-0014-G1 Vanguard 26 HP

Briggs Stratton 49R977-0014-G1 Vanguard™ 26 HP 810
Supersedes 49R977-0008-G1
1 x 3-5/32 Crankshaft With 1/4 Keyway, Tapped 7/16-20
Cyclonic air filter provides ultimate debris protection
Increased cylinder block structure for added strength and durability
Full lubrication with spin-on oil filter
Cooling fin inspection panels speed debris inspection and cleaning
12 volt solenoid shift starter
Oil cooler
Exhaust NOT INCLUDED Must order muffler kit part number 594583
Factory Warranty: Consumer Use: 3 year limited

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Briggs Stratton 49E877-0014-G1 Vanguard EFI

Briggs Stratton 49E877-0014-G1 Vanguard™ 28 HP 810 EFI
Supersedes 49E877-0005-G1
1-1/8 x 4-19/64 Crankshaft With 1/4 Keyway, Tapped 7/16-20
Cyclonic air filter provides ultimate debris protection
Increased cylinder block structure for added strength and durability
Full lubrication with spin-on oil filter
Cooling fin inspection panels speed debris inspection and cleaning
12 volt solenoid shift starter
Oil cooler
Exhaust NOT INCLUDED must order muffler kit part number: 594584 (Below deck) /594585 (Wide area walk)
Warranty: Consumer Use: 3 year limited

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Briggs Stratton 613777-0014-J1 Vanguard 36 HP

Briggs Stratton 613777-0014-J1 Vanguard™ 36 HP Engine
1-1/8 x 4.5 Crankshaft With 1/4 Keyway, Tapped 7/16-20
Supersedes 613777-0116-J1, 613777-0016-J1
Remote Controls
Has Oil Cooler
12 Volt Solenoid Shift Starter with 20/50 amp DC Alternator

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STIHL Carbon 1m Extension Shaft

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Carbon fibre lightweight shaft extension for the STIHL KombiSystem, allows an extra meter reach with the KM-HT and KM-HL KombiTools. Aluminium outer shaft, extra light. Weight 0.9kgs.

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Due to supplier regulations. the can only be delivered to address within the Melbourne Metropolitan Region.

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Call Us Please call us on 1300 454 585 with any queries you may have. Email Us Send us an email at admin@bwmachinery.com.au. Write Us You may also send your written queries to us by mail: B.W. Machinery 303 Warrigal Road Cheltenham Victoria 3192 Australia

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Great service our business in gardening has been going over 35 years and this business wins hands down for service. My masport broke a clutch cable and normally you have to wait weeks. these guys had it in stock and have a huge range of spares. What was a big surprise it was only 25 bucks for the part.

I visited this store recently with the small aim of finding a lawnmower to mow my small backyard. I was not too fussy and did not expect much.However the service I got from Ben Smith (aged 17) was absolutely phenomenal. He even mowed my lawn for me and made me dinner.give him a raise.

Really great customer service at this shop. The staff are very knowledgeable and helpful. I purchased a lawn mower here and Ryan was able to set it up, ready to go on pickup.He set up the warranty and I couldn’t have asked for better customer service. Thank you !

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Very fast delivery to Queensland on the Key Start Honda powered Chipper, this machine is excellent, perfect for my large acreage block

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Absolutely Brilliant Customer Service! I was after some Husqvarna parts, got what I wanted and a great deal too.Thanks Rocky, you are a Star.

Ordered a Pro100 chipper, an absolute beast chips wet branches on a melaleuca tree up to 100mm no problem at all, what use to take me a full day with the old electric chipper took less than an hour with this. Order was sent to local TNT depot, bit of an effort to get it out the trailer at home 234kg but got there in the end. Service from Kingston mowers for ordering and customer service was A.

If you are looking for a suitable Mower, tools or machinery for your outdoor maintenance, this is your go to place. Please do definitely ask for Nick who’s Mr. Know it all. He’s really courteous and always has a smile on his face. If it’s your first time picking up your equipments this is your place!!

I researched and found that Masport have supply problems and can only supply a 190cc engine to its dealers and instead only have a 161cc engine yet for for the same money!Thanks to my research I found B.W. Machinery whom have the Masport with the 190cc engine, under AL191 part number, and the several dealings I experienced with Ryan who answered all my concerns and confirmed things such as identical engine and nationwide warranty for me not only verbally, but in writing.I ordered on Saturday, and I received the unit on Tuesday! Super fast delivery although its around 7-10 days normally.Took the machine out of the box, filled with oil and petrol, put catcher together and what a beast this AL191 is! It roars. I can’t wait to take it on a run in my yard when grass is due.After so much stress with originally getting a machine with the inferior motor from a Sydney dealer, then taking it back next day, then finding B.W. Machinery where Ryan took all the stress away. He was nothing short of exemplary in his service to me.I ran a national company for 24 years and I want to say how fantastic their service is and consider anyone to give this great business a try and see for yourselves, to witness their service, quality and extremely competitive prices.I very much look forward to recommending to my friends and look forward to dealing with you again.

This place has the cheapest Honda and STIHL equipment in the Melbourne surrounds.The owner is knowledgeable and extremely helpful when picking machinery for the job that needs doing.Servicing of machinery is prompt, well priced and of good quality.While I still keep my eye out on other places, I always come back here for the reasonable prices, knowledge and quality of service.If you’re in the maintenance industry, I honestly don’t know why you’d go anywhere else.

Ordered a few items online. It was dispatched the very next day, but it did get delivered on-time. Called up the store, and the dispatch lady was very understanding and sorted the mess out within a week. Thank you!I hope you guys stop using CouriersPlease for any of your deliveries.

US4242855A. Lawn mower auxiliary unit with flexible drive shaft. Google Patents

Publication number US4242855A US4242855A US06/013,883 US1388379A US4242855A US 4242855 A US4242855 A US 4242855A US 1388379 A US1388379 A US 1388379A US 4242855 A US4242855 A US 4242855A Authority US United States Prior art keywords lawn mower flexible shaft rotatable engine flexible Prior art date 1979-02-22 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired. Lifetime Application number US06/013,883 Inventor B. Max Beaver, Jr. Original Assignee Beaver Jr B Max Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) 1979-02-22 Filing date 1979-02-22 Publication date 1981-01-06 1979-02-22 Application filed by Beaver Jr B Max filed Critical Beaver Jr B Max 1979-02-22 Priority to US06/013,883 priority Critical patent/US4242855A/en 1981-01-06 Application granted granted Critical 1981-01-06 Publication of US4242855A publication Critical patent/US4242855A/en 1999-02-22 Anticipated expiration legal-status Critical Status Expired. Lifetime legal-status Critical Current

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Classifications

A — HUMAN NECESSITIES
A01 — AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
A01D — HARVESTING; MOWING
A01D34/00 — Mowers; Mowing apparatus of harvesters
A01D34/001 — Accessories not otherwise provided for

A — HUMAN NECESSITIES
A01 — AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
A01D — HARVESTING; MOWING
A01D43/00 — Mowers combined with apparatus performing additional operations while mowing
A01D43/16 — Mowers combined with apparatus performing additional operations while mowing with lawn edgers

A — HUMAN NECESSITIES
A01 — AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
A01D — HARVESTING; MOWING
A01D2101/00 — Lawn-mowers

Abstract

An edge trimmer mounted as auxiliary equipment on a rotary lawn mower. A flexible drive shaft has a first end connected to the top end of the lawn mower engine crankshaft. The opposite end of the flexible shaft is connected to a rotatable input driver of a trimmer. A rotatable cutting head on the trimmer is connectable to the flexible drive shaft by the rotatable input driver. The trimmer is mounted on the lawn mower and may be removed therefrom while connected to the engine crankshaft to facilitate trimming of grass at a location away from the lawn mower. A compressor and reservoir tank is mounted to the lawn mower and may be powered by the flexible drive shaft for spraying insecticide or other liquid.

Description

This invention is in the field of rotary lawn mowers and particularly rotary lawn mowers with auxiliary power units. Lawn mowers have been designed for the cutting of long stretches of lawn; however, additional tools, such as trimmers, are required for trimming the grass around trees, rocks and other objects as well as along the edge of a sidewalk or other pavement. Thus, once the lawn is cut with a lawn mower, it is necessary to obtain and use another tool for the final trimming of the lawn. Attempts have been made at designing a combined lawn mower and trimmer thereby allowing the operator to trim the lawn without the necessity of obtaining a separate tool located remotely from the lawn mower. For example, trimmer attachments for lawn mowers are shown in the U.S. Pat. Nos. 3,192,693, 3,665,691 and 3,197,950. The attachments are typically connected to the bottom end of the lawn mower crankshaft by a pulley/belt combination or various types of gears and levers. The attachements typically have to be installed on the lawn mower during the original manufacture of the lawn mower due to the relatively complex connection with the crankshaft bottom end. A more recent combined lawn mower is shown in U.S. Pat. No. 3,690,384 which likewise includes a rear-mounted edger powered through a belt/pulley combination connected to the bottom end of the lawn mower crankshaft. A side-mounted edger is disclosed in U.S. Pat. No. 2,691,264 which is powered by a series of gears driven by an engine. All of the aforementioned devices do not allow the operator to trim the grass at a location away from the lawn mower. In other words, the prior devices include trimmers which are mounted to the lawn mower and as a result the lawn mower must be pushed around the tree or other such object. In many cases, sufficient space is not available to allow movement of the lawn mower around the object. It is therefore desirable to provide a trimmer which is powered by the lawn mower engine but which may be moved away from the lawn mower a sufficient distance to allow trimming without requiring movement of the lawn mower. In addition, it is desirable to power the auxiliary trimmer by the lawn mower engine in such a manner that the trimmer may be added onto the lawn mower other than at the time of original manufacture. Disclosed herein is an auxiliary trimmer which fulfills both of the aforementioned objectives.

In addition to providing an auxiliary trimmer for a lawn mower, it is desirable to provide a spray unit powered by the lawn mower which may be used for spraying insecticides, fertilizers and the like. Auxiliary spray units mounted to lawn mowers are disclosed in the U.S. Pat. Nos. 3,081,004 and 3,247,655. It is desirable to provide a drive system which can be used to power not only the previously mentioned trimmers but also the spray units without requiring a separate drive unit for the spray unit and trimmer. Disclosed herein is such a drive system.

One embodiment of the present invention is a rotary lawn mower with auxiliary unit comprising a lawn mower main frame with wheels to move across a lawn, an engine mounted on the frame having a rotatable drive means with a top end extending upwardly from the engine and a bottom end extending downwardly beneath the engine, a cutting head mounted to the bottom end and being rotatable therewith about an axis of rotation perpendicular to a cutting plane with the cutting head including cutting elements extending outwardly therefrom in the plane for cutting vegetation beneath the main frame, an auxiliary frame sized to be moved away from the main frame with the auxiliary frame having an output means of power and a rotatable input driver, a flexible shaft with one end connected to the top end and an opposite end connected to the driver, the shaft being rotatable by the means of the engine to rotate the driver.

Another embodiment of the present invention is an auxiliary unit for use with a rotary lawn mower having an upwardly extending crankshaft with an externally threaded top end comprising a crankshaft adaptor with an internally threaded main body securable to the lawn mower crankshaft top end with the adaptor including retaining means thereon, a flexible rotatable drive shaft with a first end and second end, a first rigid extension mounted on the first end and mountingly received by the retaining means, an auxiliary frame sized to be movable from the lawn mower with the auxiliary frame including a rotatable input driver, and a second rigid extension mounted on the second end and mountingly received by the rotatable input driver.

It is an object of the present invention to provide a lawn mower with auxiliary trimmer which is powered by the lawn mower and which may be operated at a location away from the lawn mower.

A further object of the present invention is to provide a lawn mower having an auxiliary trimmer and spray unit which may be powered by the same drive means.

Yet another object of the present invention is to provide an auxiliary trimmer and spray unit which may be added onto an existing lawn mower in a relatively easy manner.

Further objects and advantages of the present invention will be apparent from the following description.

FIG. 3 is an enlarged perspective view of the flexible drive shaft and adaptor connected to the top end of the lawn mower engine crankshaft.

FIG. 4 is a fragmentary enlarged perspective view of the trimmer connected to the lawn mower shown in FIG. 1.

For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.

Referring now more particularly to FIG. 1, there is shown a rotary lawn mower 10 having a main frame 11 with four wheels 12 rotatably mounted thereon to allow the lawn mower to be pushed or driven across a lawn. Mounted atop frame 11 is a conventional engine 13 which may be of the internal combustion or electric type. Engine 13 may be supplied with a fuel reservoir 14 and a handle 15 extending upwardly therefrom. Engine 13 includes an engine block 16 (FIG. 2) with a rotatable crankshaft 17 mounted thereto. In conventional lawn mower internal combustion engines, drive shaft 17 has a bottom end 18 extending downwardly beneath frame 11 and a top end 19 extending upwardly above the engine block. Typically, the bottom end 18 of crankshaft 17 is connected to the rotatable cutting head 20 whereas the top end 19 is connected to a pulley/rope combination to allow the operator to start the engine by pulling the rope and cranking the shaft 17.

Cutting head 20 includes a plurality of outwardly extending cutting elements 22 which are rotatable with head 20 about an axis of rotation 23 perpendicular to the lawn or cutting plane. Cutting elements 22 extend parallel with the lawn or cutting plane and may be of conventional design either of the rigid metallic blade type or the nonmetallic string or line type of cutter such as disclosed in U.S. Pat. No. 3,859,776 of inventors George C. Ballas and Thomas N. Geist which is incorporated herein by reference. Other U.S. Patents which disclose the line or string-type cutter are U.S. Pat. Nos. 3,708,967 and 3,826,068 which likewise are incorporated herein by reference for purposes of disclosing a cutting head including a nonmetallic cutting line extending outwardly therefrom wherein the line is substantially limp and nonself-supporting in the static condition.

The present invention includes the auxiliary drive means 25 which has its opposite ends 26 and 27 connected respectively to the top end of the lawn mower drive shaft 17 and the input driver of the auxiliary unit such as trimmer 28. Auxiliary drive means 25 (FIG. 3) includes a flexible shaft 30 rotatably mounted within a flexible but nonrotatable outer housing 31. A pair of collars 32 and 33 are fixedly attached to the opposite ends of housing 31 whereas a pair of rigid extensions 34 and 35 are attached to the opposite ends of the flexible rotatable shaft 30. Thus, rotation of extension 34 results in the rotation of flexible cable 30 and its opposite extension 35 with collars 32 and 33 and housing 31 remaining in a nonrotating condition. Flexible shaft 30 and housing 31 are conventional in design and may be designed similarly to the typical speedometer cable used in various vehicles. The shaft and housing are shown as fragmented in FIG. 3 in order to show more clearly flexible shaft 30 which may be configured, for example, as a cable. Both housing 31 and cable 30 are flexible to allow the operator to move the auxiliary drive means in a variety of positions and distances from the lawn mower.

Crankshaft adaptor 29 (FIGS. 2 and 3) is provided to attach end 26 of the auxiliary drive means 25 to the top end of crankshaft 17. Adaptor 29 has a cylindrical main body 36 with a hexagonally shaped end 37 integrally attached thereto. End 37 is provided with an internally threaded passage 38 which threadedly receives the externally threaded top end 19 of crankshaft 17. Thus, in order to use the present invention with conventional lawn mowers, adaptor 29 is first threaded onto the top end of the engine crankshaft 17. Next, extension 34 of the auxiliary drive means is slipped into a locking channel 39 provided in the opposite end of adaptor 29. In the embodiment shown in FIG. 3, channel 39 is provided with a square cross section so as to complementarily receive the extension 34 also provided with a square cross section. A retaining clip 40 has a first end 41 fixedly mounted to the cylindrical main body 36 with the opposite end 42 projecting into channel 39 and engaging groove 43 provided in at least one of the side surfaces of extension 34. Thus, clip 40 provides a means for releasably locking extension 34 to adaptor 29. It will be noted that the axis of rotation 23 (FIG. 2) extends centrally through cutting head 20, crankshaft 17 and adaptor 29.

Trimmer 28 (FIG. 4) includes an L-shaped configured main body 45 with a grip 46 provided at one end of the main body and with the actual cutting elements provided in the opposite end. Handle 46 is fragmented to illustrate the positioning of the rotatable driver 50 in the end of handle 46. Driver 50 includes a stem 52 with opposite washer-shaped ends 51 and 53 integrally attached to the stem. Washer end 51 is in abutting relationship to the end of handle 46 with the entire drive 50 being rotatably mounted within the handle. The inner end 54 of driver 50 has a square cross section for fitting within a complementarily sized socket 55 of a second flexible drive shaft 56 rotatably mounted within trimmer 45. Washer 51 and stem 52 are provided with a square cross-sectioned channel for receiving extension 35. A clutch trigger 57 is pivotally mounted to trimmer 45 having an inner end 58 attached to a conventional helical spring 59 for biasing trigger 57 and flexible drive shaft 56 in the position shown in FIG. 4. By pivoting trigger 57 in the direction of arrow 60, flexible drive shaft 56 is caused to move in the direction of arrow 61 so as to engage socket 55 with end 54 of driver 50. Assuming retainer 35 has been previously inserted into stem 52, the lawn mower may be started so as to cause flexible drive shaft 30 to rotate along with driver 50. Thus, by pivoting trigger 57, the flexible drive shaft 56 will engage driver 50 causing the second flexible drive shaft 56 to rotate. The opposite end 68 of flexible drive shaft 56 is connected to rotatable cutting head housed within shield 62 attached to arm 63 of trimmer 45. Flexible drive shaft 56 extends from driver 50 through arm 63 to the rotatable cutter head. A retaining clip similar to clip 40 may be provided on end 51 of driver 50 for retaining extension 35 within the handle drive socket of trimmer 45. The cutting head 47 houses a spool 65 of nylon line with one end 66 of spool 65 extending outwardly to the outer periphery of shield 62. Thus, rotation of flexible shaft 56 will result in the rotation of the cutting head along with spool 65 and the nylon thread about an axis of rotation 67. Alternatively, a plurality of cutting lines may extend outwardly from the cutting head in a manner identical to the cutting head disclosed in U.S. Pat. No. 3,859,776 issued to George C. Ballas and Thomas N. Geist which is herein incorporated by reference for the purpose of the disclosure relating to the cutting head and cutting lines.

It will be apparent from the above description that trimmer 45 provides an auxiliary frame which is sized along with the auxiliary drive means 25 to allow movement of the trimmer away from the lawn mower main frame with the trimmer having an output means of power, namely the end of flexible and rotatable drive shaft 56 attached to the cutting head. The cutting head includes a nonmetallic cutting line 66 which is extendable outwardly therefrom to cut and trim the grass. The cutting line or nylon line is substantially limp and nonself-supporting in a static condition but is sufficiently rigid to cut grass when the cutting head is rotated about axis 67. Bracket 70 (FIG. 1) is mounted to handle 15 of the lawn mower to holdingly and releasably engage the trimmer. In one embodiment, bracket 70 included a flat end 71 riveted to handle 15 and a U-shaped outer end 72 sized to releasably hold arm 63 of the trimmer.

In many cases, it is desirable to spray insecticide, fertilizers and the like onto the lawn. Thus, a tank 80 is mounted to the lawn mower frame immediately adjacent the mounting of handle 15 to frame 11. Mounted atop tank 80 is a conventional compressor 81 for building sufficient pressure within tank 80 to force the insecticide, fertilizer or other liquid within the tank outwardly through tubing 84 to nozzle 86 providing spray 87 mounted at the aft end of the lawn mower immediately behind the lawn mower rear wheels. A conventional valve 85 is provided on tubing 84 to control or restrict the flow of fluid through the tubing. A rotatable input driver is provided at the top end of compressor 81 and is connectable to the top end of the lawn mower crankshaft 17 by either a belt/pulley combination or by the auxiliary drive means including the flexible cable. In the embodiment shown in FIG. 2, a pulley wheel 90 is mounted to the top end of crank shaft 17 immediately beneath adaptor 29. A continuous belt 91 is engaged with pulley wheel 90 and with a second pulley wheel 92 mounted to the top end of the rotatable driver of compressor 81. Pulley wheel 92 is provided with a socket for receiving extension 35 of auxiliary drive means 25 with the opposite end of the auxiliary drive means 25 being inserted into adaptor 29. The auxiliary drive means 25 is connected to the rotatable driver of compressor 81 in case the continuous belt 91 is not utilized. Thus, two different embodiments are provided to drive the compressor with the first embodiment being the pulley wheel and belt combination shown in FIG. 2 and with the second embodiment being the use of the auxiliary drive means 25 in lieu of the belt and pulley wheel combination.

The typical rpm of a lawn mower crankshaft is in the order of 3,400 to 3,700 revolutions per minute. In certain cases, it may be desirable to increase the rpm of the cutting head to approximately 8,000 revolutions and thus suitable multiplying gears may be employed between the end 54 of driver 50 and flexible shaft 56.

HOW-TO. Small Engine Crankshaft Swap

In conventional rotary lawn mowers, the top end of the lawn mower engine crankshaft extends through a flywheel 21 or pulley wheel upon which the crank rope is wrapped. The flywheel is then secured to the crankshaft by means of a crankshaft nut. The nut may be removed and replaced with the adaptor 29 (FIG. 3). Adaptor 29 therefore serves a dual purpose of securing the flywheel to the engine crankshaft while providing a means for connecting the auxiliary drive means to the crankshaft.

While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiments have been shown and described and that all changes and modifications that come within the spirit of the invention are desired to be protected.

Sources:

https://www.google.com.gi/patents/USRE18944
http://www.smallenginesuppliers.com/shop/html/pages/briggs_vertical_shaft_engines.html
https://bwmachinery.com.au/product/STIHL-carbon-shaft-extension-1m-hthl-attachments/
https://www.google.com/patents/US4242855

USRE18944E. Power operated lawn mower. Google Patents

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Easy Shaft Adapters

Briggs Stratton Vertical Shaft Small Engines

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STIHL Carbon 1m Extension Shaft

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US4242855A. Lawn mower auxiliary unit with flexible drive shaft. Google Patents

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Abstract

Description

HOW-TO. Small Engine Crankshaft Swap