US933945A - Gearing for traction-engines. - Google Patents

Description

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l GBARING POE TRACTION ENGINES. APPLwAT'IoNlILBD JAN. zo. 190B. 933,945, Patented sept. 14.1909.

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A A. W. AITKEN. GEARING FOR TRAGTION ENGINES. APPLICATION FILED JAN. 20. 1908.

Patented spia. 14, '1909.

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A. W. AITKBN. GBARING FOR TRAGTION ENGINES. APPLIGATION FILED'JAN. 20. 1908.

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KEN, F SFERENGFIELD, OHM), ASSIGNOR 'IO THE KELLYSRINGFIELD ROAD 532D LEP.. COMPANY, 0F SPRNGFIELD, DELIG, A GRPGBATION (JF OHIO.

@E ARING FR TRLCTIGI'-ENGENES.

Speceaton ef Letters Patent.

Application filed January 20, 1.993.

'Patented Sept. 14, 1909. Serial No. 411,570.

To all whom it Pme/3j concern:

Be it known that l, ANDREW W'. Arrnnzv, a eitizen of the United States, residing at giringliollfl. in the county ot tflarl. and State of Ohio, have iiivented certain ,new and useiul linnn-ovenients in Gearing for 'l 'actionllngines, ol' which. 'the following is a specification.

My invention relates to improvements in road rollers, traction engines or similar inachines 'drijven by ges engine driving appliances.

l have nreierahlyshown a road roller with a four-cylinder gas engine for the driving engine, though iny improwunent is not liniited to that particular type ol' machine.

In a gene 'al Way my improvement relates to the connections between the driving engine and the train ot' gear mechanism for the traction Wheels of the road roller, and one ot' my objects is to construct the parts so the machine may be readily reversed without employing` a multiplicity oiparts, While my improved machine will operate in an improved manner as hereinafter fully ex- Jplained.

In the drawings Figure l is a side View in elevation showing Ithe frame ol.' the machine and parts necessary to illustrate my im-4 provement. Fig. 2 is a central longitudinal sectional View ou the line y v/ of Fig. 3. Fig. 3 is a vertical sectional View taken on the line of Fig. 2. I

Like letters of reference represent like 3f parts throughout the dili'erent views.

The driven or traction wheels f1, represent 'the ordinary Wheels of a road roller.

al is thefiframe of the machine and the shaft i2 for the wheels L is supported by said frame in the usual manner. I have Shown an ordinary gear o (Figs. l. and 2) rigidly secured to the shaft o?, which is oonneon-dY 'to the traction wheel a, and this gear is shown in mesh 'with the pinion o which pinion is rigidly secured to a shaft a journaled loosely inthe frame o1 and at the o piosite end of the shaft e5 is rigidly secured an' intermediate gear o which is shown in mesh with the pinion o7 (see Fig. 2). The pinion o7 is keyed to a stub shaft o8 jour- "heled loosely in the traine of the .machine in ordinary or usual Way. llt is apparent that this train of gears remains connected so that motion is 'transmitted from. the pinion el to the traction or driven wheels a.

The pinion a" meshes with the small gear an which is keyed to the transverse shaft o which shaft is ,airnaled loosely in the frame work of the machine and carries at its opposite end a brake Wheel afl". The gear a is shown keyed to the shaft for the purpose of disconnecting the traction Wheels and train of gear meehanism from the small driving e, as it is often desirable to transform the machine into a stationary power operating engine.

Referring now to the vconnections between the driving engine and the small driving gear o, l have shown (Fig. 2) loosely journaled on the shaft e two large ily wheels o and al". To the ily Wheel nl there is rigidly secured a beveled gear wheel am and to the llyJ jwheel a. is secured a gear wheel am. These beveled gear wheels are shown continuously in mesh with the beveled gear o," and the three gears constitute intermediale gearing lthrough Whiclrpower may be applied to both ily Wheels equally. The gear a is rigidly .secured to the longitudinal shaft om (see Fig. I have shown preferably an ordinary jointed connection between the longitudinal shaft a and the sleeve a, and an ordinary clutch connection for op4 eral ively connecting the driving.;V shaft ot' the `gas engine with the longitudinal shaft om. This comprises an ordinary sliding collar mounted upon the sleeve am, and. consequently when the collar L22 of the friction clutch is mov-ed to the right (looking at Fig. El) the sleeve al will be driven by the l'ly wheel ai which in turn Will transmit motion to the longitudinal shaft als. Though l. have already shown two large fly Wheels ou the. transverse shaft ou: I iind it desirable. to employ the ordinary gas engine fly wheele'l'y and lhe clutch connection therewith7 so that l" can operate the gas engine inilopeiulcnt oi its driving connections until it aluiires the desired speed, and then by operating a hand lever (not shown) at the rear of the machine, which hand lever con nef'ls with the rod e which in turn eonnevls with the roel: shaft om connected to the collar the clutch mechanism will'be op-y era-.ted so that the fly wheel o will drive the longitudinal shaft als which in turn'will drive the intermediate gearnneehanisln 11555 o1 and o, and thereby rot-ete continuouslyl the large driving Wheels el@ and o. From: this description 1t will be apparent that the 110 gear e may rotate continuously Aby reason of its connections with the driving shaft of the gas engine andas hereinafter more fully explained. -iutilize one of the large fly Wheels for a driving` connection with the small driving gear a and while this particular .'ly` wheel operatively connected with Said gear, the driving engine drives the roadroller; inone direction and the other opposing dy wheel will continue to rotate, but

in a direction reverse to that of its oom-` n panio'n liy wheel thereby affording very desirable means for assisting the road roller to overcome d i'llieulties which are necessarily met in the operation of a machine over ordinary roads. This mechanism is especially designed to aord simple and compact connec-y tions for driving the machine forward and for reversing the' movement, while at the same time the improved form of connecting devices insures the machine beingoperated in` an improvedv manner over obstructions that are apt to be -met. with in the operation of the machine.

The connections between thel gear a, and shaft e, with the ily wheels L13 Aand a are oit the following character: Two clutch spiders, Z) and 1, are rigidly secured to said shaft, e, one at the side ofeach ily-wheel,

`al and (1,1% There ismounted on said spi` ders well known forms of sliding collars b2 .tcward 'its fili/wheel and thereby when one dy whe'el'isr disconnected from the shaft a the other fly wheel will be simultaneously connected therewith to drive said shaft. It is to be understood that there is an intermeydiatc position where both clutches are diesen 'gagedi'roni the fly wheels. -As is usual vin fia the particular formofclutchwhich lf have illustrated here1the-shoes are preferably made ot wood vand are somewhat elastic andI this elasticity peii'mits the sliding collar to be pushed a triile past the center of oscillation et the toggle rods so as to lock the shoe in lric'tional engagement with the internal rim oi' the fly wheel. 2 The operating means for the clutches consists of a bell crank b9 which is secured tothe stud o, journaled loosely in tlie frame of. the machine.

coin'ieci'ed' with the ordinary hand lever (noti shown)- located at therear of the machine. The other free end of the bell crank bs is A Oneloittliejiree ends ot the bell crank bs ncon#l nects 'with a -rod 71W which rod in lt'urn is'- pivotally connected with; a link bi1 (shown in dotted lines in Fig. 2) and this link, 1211,1s pivotally connected to a sup orting arm, Z112,

which projects from the stu b, being rigid A therewith. `.llfievstud, Z513, .at its-up er enti, is rigidly secured to the yoke, blbw ich engages the clutch collar, b3, so tha;- when the stud7 b1, is oscillated by the arm, b, the yoke, b, will move to operate the clutch collar. f

The parts, as Shown in Fig.y 2, have been thrown to cause the iy wheeLa13 todrivc vthe shaft and gear Wheel a. in one direction. Consequently, when the rod bm is pushed forward (away from the rear gf the machine) the bell 'crank be is -osciiiated which in turn moves the connecting link b and oscillates the stud 513 which is operatively connected with the clutch collar b3 to slide the collar b3 away from its companion iy wheel a18 and thereby release the shoe o7 from engagement.

This movement. of the h'ell crank simultane-- ously rocks the stud o, and fsaid stud being connected with the clutch collar b2 throws the' clutch collar toward its ycompanion `ly wheel a and thereby forces the shoe vb lin' engagement with the said fly wheel to re- 'versc the movement of the shaft an and gear a for reversing the machine. It is ap-v parent that the Hy wheel als. will continue to rotate in a reverse `direction to that olf the wheel a1'L and this idle fly wheel willr generate momentum to assist the opposing fly wheel at any moment when excessive load is i met by said last mentioned iiy Wheel. For

instance, if the teeth of the pinion a" acting now to drive the beveled wheel a1, which is operatively connected to the carryin Wheels of the machine, should be retarde tion wheel, the gear a on the fly wheel a will assist the pinion allby reason of momentumstored up in the flywheel al. which' has theretofore been moving independent of the `load upon said pinion'. f

Having described my invention, I claim as followsz;

l. ln a traction engine, the combination ofr a driving engine ,with a longitudinal y.

driving shgift, an axle for supporting the driving enine located at right an les to said longitudin 'l driving shaft, a 'driven shaft substantie ly at right angles to said driving shaft, two opposing flywheels, two clutch members, said clutch members being on said in its lmovement by obstructions met by theV tracdriven shaft, means connectedfwith said driving shaft for drivingv said flywheels continuously but in opposite directions,

gears between said clutch members and the supporting axle, and means for operatin Said -clutchj members whereby onel of sai tateslcontinuously free rom its correspond-y ing clutch member allowing its momentum `to ymembere nliay rotate Vin unison .with a flyi' wheel .while the oth'ero posing flywheel ro-' esem@ 1 assist the other ywheel, substantially as specified.

2. In a machine of the character mentioned, the combination of a traction engine with a driving shaft7 an a-Xie for said tra@ tion engine, said ,axle being located at right angles to the driving shaft, e. driven shaft,

two opposing iiy Wheels, and dutch mem bex-son thedriven shaft, connections between the driving shaft and ly Wheels for driving said iywheels vcontinuously but in opposite directions, and means fon operating seiii clutch membeis'iiito and out of engegemeet with said iywheels whereby either of said iiywheeis may restate in unison. With its clutch member Whiie its assoeiatecfiywheel will rotate eontinuousiy and its imminent-um assist the first mentionechywheel geivs between the axle and 'the chith members, isubstzmtiaily 'as specified.

1n testimony whereof, I he feiereuntiset my hand this 9th dey of January, i908.. ANDREW W. LTi-E.

Witnesses:

Ceres. Wemag, MARJORIE'S Mesem?"

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