US1278452A - Tractor. - Google Patents

Description

L. B. FlSH.

TRACTOR.

APPLICATION FILED JUNE I8, I91

1,278,452. Patented Sept. 10,1918.

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L. B. FISH.

TRACTOR. I APPLICATION FILED JUNE 18. I917.

1,2 78,452., V PatentedSept. 10,1918.

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L. B. FISH.

TRACTOR.

APPLICATION mm 11m: 18, 1911.

Patented Sept. 10, 1918,

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L. B. FISH.

TRACTOR. APPLICATION FILED JUNE 1a. 19!?- 1 78,452. 1 Patented Sept. 10, 1918.

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LESLIE B. FISH, OF CHICAGO, ILLINOIS.

TRACTOR.

Specification of Letters Patent.

Patented Sept. 10, 1918.

Application filed June 18, 1917. Serial No. 175,314.

To all whom it may concern:

Be it known that I, LESLIE B. FISH, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Tractors, of which the following is a specification.

My invention relates to tractors, and contemplates improvements in the construction and propulsion of such machines. One 0bject is to construct a tractor the drive members of whichshall constitute a large tractive area and shall be mounted so as to cause no strain on the machine irrespective of the character or contour of the ground or surface over which it passes. This object is attained by the employment of a plurality of drive members, some of which are mounted in an oscillatory or rocking frame, so that in passing over anelevation or into a depression the drive and steering members will properly engage the ground, that is, the action of these parts is not impaired,

even though the ground be rough or undulating. Another object of my invention is the construction of a machine which shall have a maximum power with a minimum of parts, such parts being readily accessible. A further object of my invention is to obviate the use of gearing and substitute therefor chain and sprocket mechanism from the engine to the tractor wheels, and inclose such mechanism in housings. These housings, in addition to preventing the ingression of dirt, sand or foreign material,

' form receptacles for oil or any liubricant,

so as to reduce friction to a minimum.

My invention will be better understood by reference to the accompanying drawings, in which,

' Figure 1 is a top view of a tractor embodying the features of my invention, some of the parts having been removed so as to clearly show the construction;

Fig. 2 is an enlarged end view of the machine;

Fig. 3 is an enlarged side view of the mechanism forming the subject matter of my invention; and

Fig. 4 is a top view of the parts shown in Fig. 3, some of the parts being shown in section so as to clearly reveal the construc tion.

The supporting frame 10 is constructed by the use of channel- shaped members 11, 12

and 13, and also intermediate members'14 and 15. To this frame are suitably secured downwardly extending members 16, 17 and 18, which support the main shaft 19, as

clearly shown in Fig. 4. Pivotally mounted upon this shaft is an auxiliary or rocking frame 20, preferably'constructed of channel beams, and which has bearings 21 and 22 secured thereto, and through which the shaft 19 passes. The frame 20 also has secured at its front end, bearings 23 and 24, which are movable upon said frame, each of said bearings having elon ated slots 25 and 26, respectively, throug which pass bolts 27 and 28, respectively. Each of these bearings is provided with an upwardly ex,- tending lug 29, which is engaged by a screw 30 held by a lug 31 fastened to the frame 20. The bearings 23 and 24 support a shaft 32, which has secured thereon a sprocket 33 over which is trained a chain 34, which also is trained over-a sprocket 35 secured to the shaft 19. Integral with the sprocket 35 is a similar sprocket 36, over which is trained a chain 37 which engages a sprocket 38 mounted upon a shaft 40 which is carried by bearings 41 and 42, which are mounted upon the frame 20. These bearings are adapted to be moved by meansof the abutment screws 43, when desired, upon loosening nuts 43 which engage bolts 44 passing through elongated slots 45. These bolts are secured to the frame 20, and, as shown in Fig. 3, have sleeves 46 which act as spacing members between the flanges of the channel beams, the purpose being to secure a more rigid construction. The bearings 23, 24, 41 and 42 are movably mounted upon the frame 20, so as to tighten or loosen the chains 34 and 37 when desired. The shafts 32, 19 and 40 have secured thereto the traction wheels 47, 48 and 49, respectively, which, as shown in the drawings, are provided with lugs 50 for gripping the ground. The chains 34 and 37 and their associated sprockets are inclosed by means of a housing 51, which is preferably made in two parts so as to be easily assembled. These housings protect the chains and sprockets against unnecessary wear, and they also serve as containers for a lubricating medium, so as to reduce .the'Wear on the parts to a minimum. 'As is shown particularly in Fig. 4, the shafts 32 and 40 pass through elongated slots 52 and 53, respectively, which are closed by plates 5 1 ands-L55;respectively, said nplateshbei-ng, held in place by means of springsv 56, and- 57 These slots serve to permitthe necessary movements of the shafts'32 and 10 with respect to the shaft 19 When necessary. Asis shown in the drawings, the housing is supportedmainlyby the shaft 19, andany rocking movement of the frame 20 will of course rock the housing also. The shaft-'19 has looselymounted thereon a Wheel 58 whose hubbears against'theextension 18-, and also asleeve 59- secured to'said shaft. The hub is provided with aclutch portion 60 adapted for operative engagement with clutch member 61-=upon-actuation 0fthe'lever 62 pivoted at 63 to extensions- 6a fastenecl-to the member 15, 'theidea'" being that this wheel 58 'in=-1nanyinstances may be runas an idler and atbther times" it is desirable to-ha/ eit act-as a tractionor power wheel.

The'traetoris preferably drivenas follows: I

il-he shaft 19 has secured thereto a sprocket- '65 over'whichis trained abhain 66-,-wh ich also engages a. sprocket '67 secured to a jack shaft 68 which is rotatablywmounted -ii;1'bearings (secured to=the members 14 and 15. -A- large 'sproQjketGE) is carried on this-jack shaft, and 'chain' TO- which-is trained over this sprocket is also :trained over a-sprocket 7 1 -on theshaft 72 of the engine" '7 3,"Wl1lCh is suitably mounted'upon the-members, 14: and 15. A-su'itable' housing 74e-incloses-"the chain.66 and "its associated sp,rockets, and a similarhousing 75. incloses ithe sprockets 69; and 71. These housings are adapted to-contain a lubricating medium, and they also serve to prevent dirt and sandfroin'gain'ing access to the operating parts. Theframe '10' 'has' fastened thereto a chain 76,- which is also fastened to the frame 20 and serves to limit the oscillating or rocking movements of said' frame .When the wheels are passing over uneven or undulating surfaces. I

The steering of ;the,tractor is accomplished by means-of a steering'whe'elW mounted in a fork 7B Whose upper end is carried in .a casting? 9 secured to the frame 10. The fork terminates in a Worm Wheel 80 adapted to mesh with a Worm 81 secured toa rod 82 terminating, in a steering wheel=83 suitably support-edjby the" frame.

It Will be apparent" from the foregoing "description that my: tractor embodies mechanism wherein the tractor -membe-rs are adapted to: ust themselves to the contour of the grounder surface over whichthey pass and" these wheels are construc'ted -so that 1 collectively they behaved an extremely large aLea of engagement with the ground.

- Vention, I do not wish to be limited to the precise arrangement shown, inasmuch as it will beu apparent to those skilled in the art that changes and modifications may be made-Without departing from the spirit and scope of my invention.

I desire to secure the-following claims: 5 1. Ina tractor, :the combination-of a slipportingl'hfra-me, -an--e1'1gine,: a main shaft, sprocket and chain" mechanism disposed-between-said engine and main shaft wheels mounted on said-shaft, means for causing. one or both of SR-ld-WhQGlS-itO be driven as desired, an auxiliary frame rotatably carried bysaid main *Sha fty front. andrear power 1 Wheels mounted v in and surrounded by said i auxiliary frame,.= and-ichain and sprocket means for "driving said L'POWBI Wheelsfrom saidshaft. 1

25 Ina tractor, the combination oft-a asupp-o1-'ting -frame,:an engine,l a main shaft, sprocket and chain mechanism disposed abetween said engine and main 1 shaft, Wheels mounted on said --=shaft, -means for causing one or bothof SiLlCl-WVhGB'lS "to be driven as desired, an oscillatory auxiliary frame carried by said main shaft, afrontaaand' rear powenwheels mounted: in and surrounded by said auxiliary :frame,:=cha-in and-sprocket means for driving said power wheels: from chain and sprocketmeans.

" Ina tractor, the'comblnation of asupporting frame, :an eng-ine, a main shaft,

-sprocket and chain mechanism disposed between -saidengineuand main, shaft Wheels mounted on saidshaft, means for causing one or both ofsaid wheels. to .be "driven as desired, an auxiliary rectangular frame rotatably carriedxby said shaft, front-and irear power wheelsmounted .inzisaid auxiliary frame, and chain and: sprocket means for driving said'ipowernwheels from said shaft. 4L. In- :a t-ractor, ;the comhi nat1on"of a -'-frame, an engine; aimainshaft, sprocketand chain mechanism disposed between-saiidg entangular rock-ingzfra-me carried-by ssaid rounded by said rocking frame, and-chain and sprocketrmechanism for :driving -said traction WllGGlSl from SflldiiShZtft.

Lnsmneniinisn.

I-"G-qpies of this-patentmaybe-obtained for five-cents: eaeh,' by ,addnessingthe iifiommissioner o f latents,

' WashingtomlDaCP said-shaft, and Binclosin-g frames. forsaid V shaft, traction wheelszmou-nted -inzand sur-

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