USRE16266E - btjbns - Google Patents

Description

Fgb. l6 1926. Re. 16,266

F.- D. WILSON ET AL 'nmusmssiou DEVICE Original Filed Jan. 2. 1925 2 Sheets-Sheet 1 ill/fa U T m v N l '23:- u \Q Q .n

Feb. 16 192s. Re 16,266

F. D, WILSON ET- AL 1 TRANSMISSION DEVICE Original Filed Jan. 2; 1925 2 Sheets-Sheet 2 JNUENTUR 5 5mm friction induce Reissued Feb; 16, 1926.

UNITED STAT S Re. 16,266 {P N o 1cE'-,

rmannnicx n. W lson AND mommn s. Bonus, 01.? mm, ,rnnmors, assldiroa,

BY m-zsma assremms, 'ro WILSON rue-r01; muracrumxe comm, on ommcwe, IOWA, a conromvrron on Iowa;

mnansnrssrou DEVICEQ Original application and January 2,'1e 2a, Serial in. 0,131. Renewed 06mm- 27,1924; In.)

1,538,626, dated April 14,1925. Application for reissue fled October 19,1925. Serial 30,38,543.

To all whom it may concern Be it known that we, FREDERICK D. Wrnson and Lnoiqm S. BURNS, citizens-of the United States, residing at Harvey, in the county" of .I 5 Cook and. State of Illinois, have inventedcertain new and useful Improvements in Transmission Devices, of WlllCll the followmg 1s a speclfic'atlon.

our invention has reference to transmissions devices, and pertains moreespecially to such devices, as are designed foruse inconnection with tractordriving mechanism,

' such as has been shown and set' forth in A broken line 3 3 of-Fig'. 2. v

Fig.- 4 is an enlargement of the central Letters Patent No. 1,439,045, issued Decem-' her 19,1922, to said Frederick D. Wilson.-

One of the purposes of said 'mechanismis ito secure the jolnt operation of two sets of devices, such as the treadwheels on opposite sides of a. tractor, andiat' the same time pro-' m vide means forcontinuing the Operation of one of. Sets ofedevices', while interrupting the movement-of the other one;

' was accomplished in said former invention bymeansjof worm-drive gearing, the pitch 3 of the spirals on the worm-shaft being, such asto cause an automatic stoppage of the arts associated therewith, upon said shafts ingdeprived of power. It has been found in practice, however, that therev is a tendency ofsuch worm-shafts to continue their movement forfa time, .c'aus'ed partly bythe 1110- 'Inentum of the parts, and'partly by the fluid by the 011 in. the casing in which -such parts arejenclos'ed. This con- J tinned movement is detrimental to "the promptaction. ofthe mechanism, such aschanging the direction of a tractor at a desired point, but has 'a'tendency to carry the machine past such point.

',,-The chief purpose .ofhe presentjinvention is to provide means for instantly. interrupting the movement ofsuch worm shafts,

v as soon as the power isrernoved therefrom,

Thisis; accomplished by means of clutch ,'devices which act as a brake onthemworr'n drive mechanism, as soon as the same'has been released by-I the clutch members by' means of" which-the worm-shaft is Seem ..n1otion. This arrangement ofclutch devices is under the same control as that of which the drive clutch w are set, and is ar rangedso as to operate upon the -reverse The movement of the shaft, 7, is imparted to the -worm-shafts, 8, .byis'milar groups of- Jmechanisin, andin' the'sfollowing deseripaction of the mechanism for controlling the drive'clutches. i i e he above named, and otherieatln es an advantages of the invention, will more fully.

appear, from the following specification,

reference being had .to'the accompanying drawings, in-which Fig. 1 shows the mam partof the invention, in vertical longitudinal section.

Fig. 2 is' a plan view of the clutch mechanis'm, with one of the clutch members broken "Fig. a vertical cross-section onlthe part'of Fig. 1. J v

Fig. 5 is an; end viewof the wheel 19. The mechanism is shown enclosed a casing, ,5, t'ransverselyoi which is the rear-I connection with the main driveshaft ofthe tractor motor,'so as to be operated thereby. Mounted on the shaft, 7 ,near' the ends there? of, so as to be rotatable thereon are sleeves,

8, provided on their outer faces'with wonnwhich isjournaled in av casing, 12, forming an "exte'nsion ofj thecasing,--5. The other sleeve, 8, is similarly provided with'aworm drive for engagement with ';a worm-gear wheel, 13, on a shaft, 14, journaled 1na smg,

forth. in [said former application, the pur- .sp1rals, 9, one;of which is engageable 4 a'worm-gear wheel, 10,- fixed on a shaft, 11,

pose being to transmit power from the shaft,

"I; through the shafts, 1 1j and 14 in opposite directions, 'to""drive the tread .w eels on opposite sidesiof the tractor, '01" for S milar;

ti'on; thereof only one of-jsaid; groups will heji eferred to, the various-partsfbeing pro vid'edgwith correspondingi reference num her-sin the drawings, Fixed to the'inne'l'send 31: the'sleeve," 8, is a clutch-member, 1 6,;hel d 1;

in which is a. series of friction discs, 17, adapted for engagement with a simllar ser es of discs, 18, carried on the rim of a wheel,

.. the wheel, 19,-. an

19, fixed 0n the shaft, 7. A clutch-member, 21, is supported on a sleeve, 22, loosely mounted on the shaft, 7. The last-named clutch-member is adapted to' actuate the discs, so as to com ress the same and lock member, 16, together,

causing a rotary movement of. said wheel,

and the sleeve, 8. The clutch member, 16, isprovided at 1ts edge with an annular flange, 23, within which are supported friction discs, 24:, for engagement with; similar discs, 25, carr ed by a clutch member, 26. Between the clutch members, 21 and 26, is a circular space rec" arms, 31, the ends of which have a-bearing tension,

against the collar, 27, on opposite sides ofthe shaft, 7. The applicatlon of force to said arms operates to crowd the members, 21 and 26, outwardly, resulting in the engagement of thediscs, 17 and 18, asbefore mentioned.

. The clutch member, 26, is held from 1-0 tation by means of forked'arm, 33, secured b to the collar, 27, and provided with an ex- 34, having lateral play in a boxing, 35, projected outwardly from the casing, 5. The inner ends of the forks'of thearm, 33, are bent outwardly, for engagement with lugs, 36, on the ends of the arms, 31. After the discs, 17 and 18, have been engaged, in

order to release the same,the rod, 30, is operated to move the arms, 31','-toward a central position, a continued movement-thereof, bringing'the discs, 25, into contact with the discs, 24, which acts as a drag uponsthe member 16, causing the same to at onceeease from rotating. Y

Each .of the clutch mechanismsis pro vided with one of-theoperatofls rods, and when both of said rods are actuated at the same time thefshafts, l1 and 14, are simultaneou'sly driven. "Updlithe force of'either of the rods, '30','.being' withdrawn the shaft controlled by the other .rod continues to rotate, while the release of the pressure of-the The release of the'pressure of the other rod, 30, operates in the same way with the de vices underth control thereof. /In case itfirst rod not only clutch, but throws the brake clutch into" action, causing an instant stoppage of the which is controlled thereby,

worm-drive,

is desired to stop thev mechanism ,quickly,

.this can be done-by operating both of the 1 5, is an op-' is bent at opposite disengages the operating,

rods the same time, to free the active tata.ble' on the shaft, 7, and connected with the Worm sleeve by means of a portion extending into a recess in the end of the sleeve,

the connection between said parts being preferably of a threaded character. On the outer end ofc the member, 38, is an annular flange, 39, within which is held a ballbearing member, 40, encircled by a complementary member,' 41, which is,held .in a boxing, 4-2, in the end of the casing, 5. The adjacent faces of the parts, 40 and 41, are grooved to form races :for series of balls, 43; By' means of the threadedconnection between the parts, 8 and 38, a longitudinal adjustment of the extension may be secured. After the position of such extension has been established, it may be locked from displace, ment'by means of a collar, 5L4, slidable on the reducedportion of the extension, and

rotatable therewith; A portion of the collar engage flattened end portions of the memer, 8. The collar, 44, also bearsagainst the inner end'of the bearing, 40, and prevents outward movement of the worm-gear member, '8.

It will be evident that this is a very simple arrangement for supporting the outer ends 'of'the worm-gears, and one wherein each of the worm devices is independent of extension, 38, and,

edges'thereof, so as to theother, so that the end-thrust to which these devices are subject, when. in action, will not be imparted from one thereof to the other. It is also obvious that this end thrust is fully taken care of in the style of support for the worm-sleeve hereinabove set forth. In the mechanism shown, when both/of ,the worm devices would be in operation; either forwardly or reverse, the line of thrust wouldbe' in the same direction, and the eiid thrust in -either'.direction is fully overcojme by the bea'rings in the ends of the casing, .5.

Another] advantage of the worm-gear drive above mentionedis found in thecom- 'paratively short worm-body, with a correspondingly reduced length of opening to be drilled therein, greatly "facilitating the manufacture thereof.

WVhat weclaim, and desire to secure by Letters Patent, is:

1. In a device of the classdescribed com;

prising a driving element, and an element driven thereby; gear 'mechanlsm operatively connected'to. said driven element; a. plurality of friction clutch-driving discs adapted to -co-operate to impart the movement nism; a' plurality of friction clutch discs capable of a brake action on said gear mechanism; manually operable means adjacent the driving discs for actuating them; and

non-rotatable means between the driving and biake discs operatively connected with and movable toward the said'manually operable means for actuating the brake discs when the driving discs are released.

2. The combinationof two friction disc clutches, one adapted to rotate and the other to stop a propelling mechanism for a vehicle and operatively connected for alternate actuation; a vertically disposed, manually operable member, mov'ablebetw'een two positions, adapted to actuate said clutches, a non-rotatable member between said clutches, movable toward and away from the driving clutch; arms .fixed to said manually'operable member and Yoperatively connected to the non-rotatable member to moye-the nonrotatable member toward said operable member to set the brake clutch and release the drive clutch, or the reverse, as desired.

mg mechanism for a vehicle and two multiple. disc clutch mechanisms, one adapted to rotate and the other to stop the wormgear mechanism; a driving shaft, adapted to. drive saidworm gear mechanism through one offsaid clutches; a' driven shaft operatively connected tothe driving shaft and both clutches, the axis of said driven shaft being at: right angles to and above, the axis of the last 'named'shaft; a manually operable member for actuating said clutches;

a non-rotatable member, a portion of which,

is between the clutch mechanisms, operatively connected to, movable with and toward said manually operable} member to set one of said 'clutches or the reverse, as desiredy' a 4. Ina device of the class described, in combination with a driving .shaft and a shaft to-bedriven' thereby, a gear mecharotation; and- "means :for' imparting! 'r'movement both clutch operating 7 mem cause simultaneousfiaction gthereofil nism adapted to impart the movement of thejdriving shaft to thelast-named shaft;

a drive clutch mechanism including a plumayor friction iscs'ya brake clutch mechi anism including aplurality of friction discs; an operative member rotatable withthe first gnamed clutch mechanism, and; capable of causing the-engagementof the discs there,-

of; an operative "member. having "a, non-ro-i tatablerelationwith a portion of the brakemechanism' and adapted tocauSe-"the enment of'. the discs thereof; means j-fo'r ding last-named operatingmember fsired. C of the driving element to said gear mecha- 3. The combination of a worm gear drive to set the drive clutch discs and release the brake clutch discs or the reverse, as de- 5. In adevice of the class described, in combination with an elongated, oil'tight,

casing and a driven shaft therein, a shaft above and at right angles to thedriven shaft,

worm-gear mechanism' adapted to impart the movement of the first-named shaft to the last-named'shaft, the worm member of said mechanism being in the lower part of the casingand below the gear member; a driving clutch in said casing, 'operatively connected to said worm member, comprised of a series of co-operating discs slidable toward and away from said member; a

brake clutch in said casing, ope ratively connected to said worm-member, comprised of a series, of co-operating discs slidable toward andaway from said member; a manually operable member protruding from the casing; means operatively connected to the last-named member, adapted to engage the drive clutch when 'moved toward the worm member and to engage the brake clutch when moved in the reverse direction. a

.6. In adevice of the class described, in combination with an oil-tight. casing and a worm-gear mechanism therein, a plurality 3 of clutches in said casing, each partly comprised of a series of co-operating discs, and connected toa lternately'drive and stop the worm-gear mechanism; power driven means,

also in the casin driving one of said clutche s;a manua y operable member protruding from the'casing; a clutch actuatin'g member between said' clutches to alternately actuate them and movable toward and away from said gear' mechanism; ineans operatively connecting'the manually operable member to the clutch actuatingmem- 'ber t0 move the same toward the gear mechanism to set the. drive clutch, and in the reverse direction to set the brakemIutch, both said clutchesoperating on the worm member of the gear mechanism.

The combination of an oil tight casing, a drive shaft and shaft to be driven thereby, in said casing, the axis of the last-named shaft be'ng at right angles to thefirst-namcd shaft and connected therewith through suitable gear mechanism; a, plurality of friction clutch elementsin said casing, adapted .toco-operate to impart the -movement of the first-named shaft to said" gear mechanism'; a plurality of friction" clutch elements in said casing, capable of a. brake actionon'said g'earmech'anism; a movablev non-rotatable member between the -plura1ities 'of clutch elements, movably connected .to the casing, adapted to cause their alternate actuation; a manually operable member protruding from the casing and operativellly connected to .set thegfdrive clutch when nonsiiotatablemember i3?- nio ved toward themgear mechanism and to set the brake. clutch and release the drive clutch when moved in the opposite direction. 8. In a; device of the class described in combination, an oil tight casing and a drive shafttherein; a shaft to be driven by said drive shaft, also in the casing, and jour-' gear mechanaled' above the same; suitable nism connecting the shafts; a ive clutch ada ted to impart the movement of the drive shat to the driven shaft, comprising a series 'offriction discs; abrake clutch, also in the CitSlng, adapted to retard the movement of the driven shaft when the drive clutch is released, and com rised of a series of friction discs; a manual y operable member protruding from the basing and movable between two positions; a clutch actuat-' ing member between the drive clutch and the brake clutch'and positioned jointly by the manually operable member and'thecasing, and adapted to alternately actuate said clutches by virtue of its connection with the last-named member; a second clutch actuating member, actuated by the first, to. set the v drive clutch when moved toward the gear mechanism, and the first-named clutch'actu ating member setting the brake clutch when moved away from saidjmechanism.

9. In a transmission device, the combination with a drive shaft, and shaft to be driven-thereby, of a worm-drive mechanism operatively connected with said last-named shaft; a clutch member carried by said firstnamed shaft, provided with: friction clutch ,elements';'a clutch-member carried b' said worm-drive .mechanism, and provide with ,fricfion clutchelements adapted for engagement with said first-named clutch elements a brake clutch mechanism spaced apart from said clutch devices; a movable ,meniber in-.

terposcd between said first-named clutch devices and said brake clutch mechanism, capable of alternately actuating the same, gird means foroperating said niovablememl i a 10. In a transmission mechanism, in combination with a drive shaft, and shaft to be driven thereby, a gear mechanism ada ted to impart the. movement of said drive s aft to the last-named shaft; a clutch mechanism adapted to impart .the movement of the .drive shaft to said gear mechanism, comprising a member rotatable with said shaft, 2. vmember connected. with said gear mechanlsm, and a'serles of co-operating friction discs, carried partly by oneof said members- 1 and partly by the other; an operating member, loosely mounted on said drive shaft and adapted to actuatei said friction discs, to

cause the engagement thereof; a brake-clutch mechanism in proximity to said first-named [clutch mechanism, comprising; a member" incidently releasethe brake clutch and set I the drive clutch or the reverse,"as desired.

In testimony whereof we aflix our signaturesji V Y. r A

FREDERICK" D. WILSON. LEONARD BURNS. v

Images