US1650810A - weaver - Google Patents

Description

Nov. 29, 192 7.

I. A. WEAVER JACK Filed July 20. 1922 I 4 Sheets-Sheet l mmw Nov, 29, E92? i. A. WEAVER JACK 4 Sheets-Sheet 2 Filed July 20 Nov. 29; 1927, 1,656,810

I. A. WEAVER JACK Filed July 20 1922 4 Sheets-Sheet 3 Nov. 29, 1927. 1,650,810

I. A. WEAVER JACK Filed July 20. 1922 4 Sheets-Sheet 4 o plcte jack;

Patented Nov. 29, 1927.

stares mm rrics.

IRA A. WEAVER, OF SPRINGFIELD, ILLINOIS, ASSEGNOR 'lO 'WEAVER MANUFACTUR- INC-Er COMPANY, 015 SPRINGFIELD, ILLINOIS,- A C(JRZPORATEON OF ILLINOIEJ.

JACK;

Application filed July 20, 1922.

)ody of the vehicle while its springs are- 1 being repaired or oiled when the weight of the body is thus removed from them.

It is also designed to be of substantial 1 service when shock absorbers are being applied to or removed from the vehicle.

With suitable attachments applied, the device is of material. advantage in handling truck wheels while they are being removed 1 from or applied to the vehicle and during their transportation to and from hydraulic or other presses to the tables of which they must be raised or lifted for removing the old tires and replacing them with new ones.

1:; To enable those skilled in this art to fully understand this invention 1 have illustrated in the accon'ipanying drawings forming a part of this specification a desirable and prelerred embodiment of the invention and for sin'iplicity the same parts or elements throughout the several views have been supplied with lilte reference characters.

in these d 'awings: t

Figure 1 is a perspective view of the com- Fi ire 2 is a similar view of the worm shatt forming a part of the ack;

Figure 3 illustrates in perspective one way in which the jack may be employed for eled1: rating an automobile permitting the workman to occupy the position shown;

Figure 41 is a fragmentary perspective view of the attachment or accessory used in connection with the handling truck 50 wheels Serial No. 576,219.

Figure 5 is a perspective view indicating the employment of the jack and attachmen in association with a truck wheel;

Figure 6 is a fragmentary View of a portion of the parts illustrated in Figure 5;

Figure 7 is a partial vertical section through the lower portionof an appliance incorporating a somewhatmodified embodimentof the invention 1 7' Figure 8 is a horizontal section through the same partof the mechanismyand Figure 9 is a vertical cross-section on line 99 of Figure 8.

Referring to the drawings, it will be perceived that the frame of the jack or elevating appliance comprises two, horizontal, diverging legs or angle- bars 11 and 12 on the outer ends of which, by means of suitable castings 13, 1.3 bolted, riveted, or otherwise fixedly fastened thereto, appropriate carrying wheels 14, 14 are mounted in parallelism;

Attheir other or nearer ends, these two arms or legs are bolted or securely and rigidly fastened in any approved manner to the opposite facesof a main housing or casting 15 of peculiar and especial shape clearly shown including a pair of upstanding, spaced, parallel, upwardlyconvex-gin braced walls 16, 16 and aligned bearings 17' and 18 in its lower skeleton portion.

Each side angle-bar or leg, 11 or 12, has a top, outward]y-extended, horizontal flange and a vertically disposed depending flange along its inner margin, and in order to strengthen the latter flange near such connecting or central casting, each such flange has riveted against its outer face a plate 19 of varying width or depth corresponding in a general way to the strains placed upon it.

The construction also includes a pair of castonwheels 21, 21 and their supporting brackets 22, 22 secured to the frame against the outer faces ofthe two plates 19, 19 opposite the main-casting as is most clearly shown perhaps in Figure 3. 3

A tapered canti-lever lifting or jack'arm is fulcrume'd between the walls 16, 16 on a short cross shaft 23 supported in the upper parts of the latter, and such arm at one end hioieand s, l

is equipped on its under portion with a segment worm-wheel 24 concentric with the axis of shaft 23.

The lifting and lowering movements of such arm or cantilever are brought about by a worm 25. on a shaft rotatable in bearings 17 and 18 and in mesh with the wormwheel 24;, whereby turning of the shaft and worm acts to rock the lift or jack arm up or down.

Shaft 26 is provided with a square-tooth ratchet-wheel 27 fixed thereto and rotatable therewith, the shaft having a lever-head or socketmember 28 loosely mounted thereon at one side of theratchet-wheel, such element 28 having a ratchet-pawl 29. of ordinary construction with teeth at its opposite ends so that the. ratchet-wheel may. be operated in either direction, If desiredthis pawl may be equipped with spring means of any appropriate style to. maintain either of its end teeth in cooperative engagement with the ratchet-wheel.

l/lember 28 has an operating handle 30 for adjustments of the arm 20, but when a substantial load is to, be lifted. a comparatively long bar handle is inserted the socket. oi element 28 to. secure adequate leverage on the shaft.

A ver-ticallyape tured saddle 32 is hinged on the free end of arm 20 at 33, and, in order to maintain such member in horizontal relationtor all angular positions of the rock or lift arm a aarallelemotion mechanism r .3

provided; consisting of two links, 34, 3.4. one

on each. side, each pivotally connected; to the member at 35 and to; the main ca o housing, inside of the; corresponding wail With some. kinds, oi worlr, the saddle 32 alonei used; to directly engage. the load, but in other; cases, it is des ,able to equip such element with an extension, for example to increase the height of thelitt, or the such an extension bove the cantilever arm in its; lowered position enables the jack to. be placed under the running-board oi. the ve-. l have. the extension engage the trame thereof for lifting or elevating: pun poses, whereby one side. ofthe car chassis. may. be. raised to enable either the front or rear spring to be replaced or lubricated while the weight removed therefrom, and without having any obstruction. in the way of; the mechanic while he is. working on either end. of the spring at either the front or; rear portion, of the; 2

Such extension conveniently takes the form, of a seat-member 317 swivelled on. the

upper end of an upri lt, screw-threaded, rod.

Obviously, adjustment of the nut governs. the height of the seat member above the sad die.

It will be understood from the above de-- scription that, through a powerful leverage, the arm 20 may be rocked up or down to raise or lower the load, and, that, by reason. of the diverging relation of the supporting legs 11 and 12, the workman, as shown in Figure 3, may occupy the space directly below the lifting element 32 or 3'? as the case may be which engages the body undergoing elevation or maintained in raised position.

When the handle 31 is rocked alternately up and down on one side of the axis of the shaft 26, the load will he raised, moving" upwardly step by step curing the successive downward movements of the handle, and when the same handle is rocked up and down on the other side 01 such axis, the load will he lowered step by step, each partial descent occurring' during); each downward movement of the handle.

For the removal and replacing of vehicle whcels, such as the heavy truck wheels equipped with or pneumatic tires, and the raising;- and lowering of such wheels to and from the table of the press on which the tire replacement operations are performed, a. materially different. attachment or accessory is employed.

This part is shown in Figures 4, 5 and 6 and comprises a flat bar bent to provide parall .l. spaced arms 41 and 42, the connection portion 13. of the bar being looped upwardly supplying a middle elevated section 1 .4 equipped on its under face with a down wardlvextended lug or pin 45 adapted to lit in the, holeof the saddle 32.

The two parts of the bar on. opposite sides of the looov are tied together by a connecting; angle-bar 46. riveted thereto.

To the top face of the middle section ll there is. riveted the center part or section of a baror yoke, the end portions 48, 48 of which flare or diverge upwardly as indicatedin Figures 5 and 6. and each oi these is fitted with an adjustable, U-shaped. apertured clamp 49 straddling the bar, the legs otthe clamp having aligned holes adjustably receiving the shank of a 110015 51. formed of a bent cylindrical red.

A set or clamping screw 52 extends through a threaded hole in the web oi the clamp, its inner end bearing against the ad jacent face of the part 4-7.

By turning this screw. the shank of the hook may be drawn against the har and securely but adj ustably maintained in position.

Truck-wheels. are very heavy. and, inasmuch as the brake-drum is attached tov one side, it is diilicult to roll the demonnted wheel over the floor by hand, and it is dangerous for one person to handle.

This improved appliance with the attach- ,arm and that its angle-bar i8 is hearing.

against the lower part of the saddle-element 32, and. assulning, "furthermore, that it is desired to remove a truck-wheel from its vehicle and that the latter has been jacked up sullieiently so that the wheel is oh, (if the floor or ground, the jack is rolled along until the arms ll and 42 are beneath the wheel tire on opposite sides of its center, whereupon the jack-arm by manipulation of handle 81. is rocked upwardly until the weight of the wheel is just borne by such supporting yoke ll, 12.

Then the two hooks 51 are adjusted or,

positioned to extend around to the rear of the tire and clamped in this position, and bodily movement or rolling oi the jack away from the vehicle carries the wheel with it, such wheel resting-on the parts -i-l and 4-2 and being prevented from falling over by the arms l8 and hooks 51.

The ack ma be used also to raise the wheel up to the press table on which it is deposited during the tire removal operation.

The wheel when ready for replacement on the vehicle is held on the jack in the position itoccupied when it was removed, and the jack carrying the wheel is rolled into position to apply the wheel to the end of its axle or center support, whereupon the hooks are released and turned out of position audthe supporting arms ll and 42 lowered sui'liciently to permit the jack to be rolled out oi the way.

ltshould be noted that in pertori'ning these operations, the jack or litting and transporting device may be quickly and accuately placed and that the wheel lifting member extends clear to the floor on either side of the wheel.

Ii? preferred, the jack alone may be used for elevating the wheel from the floor while it is still on its-axle, but before removing the wheel from the axle the latter or some corresponding part of the vehicle must be supported by other means to temporarily take the place of the wheel to be removed.

t may be observed also that the shape andconstruction of the jack and its attachment are such that the center of the wheel.

is not interfered with whereby it may be readily sighted while placing it in position on its axle, and there is no obstruction to interfere with the proper use of tools such as wrenches or puller clamps in removing or replacing the truck wheels.

It will be seen additionally that the jack has an extremely long and wide wheel base which gives assurance of security while loads are elevated to a considerable height.

In some cases hi a construction of this type the end thrust of the worm on the frame may be somewhat excessive for the ready and eflicient performance of the tune tions specified, unless suitable anti-friction means are provided between these parts, and accordingly such a construction has been shown in detail in Figures 7. 8 and 9.

In this embodiment of the invention the parts of the mechanism are much the same as those already described, but a ratchet or toothed lock wheel or collar 61 is loose on shaft 26 at the end oi the hub oi the worm 25, and between the part 61 and the adjacent face of the. shaft bearing 18 a ballbearing 62 is interposed, whereby to ease and facilitate the turning oi the worm and the associated worm-wheel sector 2% during the load-lifting action. I

Owing to the quick pitch or" the thread of the worm, it is desirable to render such antilriction elements inoperative while the arm 20 is supporting the load and while the latter is loci lowered.

Accordinp' a spring-pressed dog or pawl (33 is mountea on the rrame which permits the member ('51 to turn in that direction corresponding to the elevating movement of the load-lifting arm 20 of the jack, under which circumstances the teeth of the part 61 travel idly under the dog, the latter, howe er, by coaction with suchteeth preventing retrograde rotation of the element 61.

The obvious result is that the worm and worm-wheel may be turned to raise the load without undue efi'ort because the ballbearing is operative under such circumstances, but since the toothed member cannot turn and is held stationary during the reverse rotation of the worm, thus rendering the ball-bearing inoperative, the end thrust of the worm is employed to assistin maintaining the load raised and to assist in restraining or retarding its descent when it is being lowered.

Those trained in this art will readily understand that the invention is not limited,

ed together only near their adjacent ends,

and atlording ai'iiiple space between them for the worlnnan, carrying wheels for said support and legs, a load-l1v ting arm rockingly mounted on sait support for, movement in a vertical plane between said spaced legs, means to rock said arm, a load-engaging 4&- es

member rockingly mounted on said arm, and means to maintain said member positively in substantially horizontal relation for all positions of said arm.

2. In a jack of the character described, the cou'ibination of a support comprising a main body and a pai ot substantially-horizontal legs diver 'n i'oin and conn at their adj..cent ends 9; ample space between then: for the worh' .2, carrying-Wheels therefor, a load-lifting arm rocliingly mounted near one end thereof on said support to operate in a vertical plane between said legs, means to rock said arm, a loadcngaging me for hinged to said arm, and a link pivotally connected to said arm and support to maintain said member in substantiall -horizwntal red arm.

described, havin lation for all positions 3. in a jack of the the combination of me a pair of outstanding tal diverginglcgs com" near their'adjacentends a space between them tor ti :o vfo lifting arm tulcrumed on saio vertical movement in plane bk, legs, and a worm and Worn-whee said arm.

4:. In ajack of the character doscriijiec the combination or a main support having a'pair 0t std.ttantially-lroriz'ontal diverging logs connected together only near their adjacent ends and atiording an role space b tween them tor the Workman, a load-lif ng arm tulcumed on said support for movement in a vertical plane between said a Worm and Worn'1- .vheel to rock said area, and a pawl and ratchet mechanism to operate said Worm.

In ajacl; ot' the character described,

the combination of a support compri .ng a main body and a pairoi substantial -lr rizontal legs diverging therefrom and connected together only near their adjacent ends and ai'iording ample space between them for the Workman, carrying-Wheels revolvable' about axes fixed with relation to and near the f ee ends of said logs, Castor-Wheel means for said support near said main body, a load-litting n fulcruined on said support for move ment in a vertical plane between said legs, a Worm and worn-nn'heel to op :rato said arm, ratchet and pawl mechanism to oper \vorni, a load-engaging member mou J 'l arm,'and a link pivotally connector said member and support to maintain said member in ,ibStalltlfll'lydlfili onial i lation for all positions of said arm,

in a jack of the character de:;:cribed, the combination 0% a support, carrying;- whoelstheretor, a load-lifting; member movably mounted on said support, means to operate said member, and spaced means on said member adapted to support a vehicle'- Wheel by engaging the lower portion of its periphery on opposite sides'ot its center.

7. in a jack of the character described, the combination of a support, carrying Wheels therefor, a load lifting member movably b. In a jack 01 the character described, the combination of a support, arryingwheels therefor, a load-litting arm rockingly i'nounted on said support, m ans to rock said ar 1, means carried by said arm to supporta venicle whoel and to preventthe Wheel le thus supported from falling over, and to maintain said Wheel-supporting in substantially horizontal relation positions of said arm.

a jacl; of the character described, nation of a main support having s,carrying-Wheels for said supad-nrting member operable in a l plane between said legs, means to said member, and means carried by rember to support a vehicle-Wheel engaging the under portion of its periphery.

it). in a s h of the character described, of a main support having erging lcgs car ymg-ivl ieols i or said supt, a load-lilting arm roclnngiy mounted div nor

n .fLlCl support to rock 111 a vertical plane and means carried by said arm to support the vehicleuvheel while engaging the under porti "a of its periphery.

11. in a jack of the character described,-

combination of a main support having diverging legs, carrying-Wheels for said support, a load-lifting arm roclnngly mounted under portion of periphery on opposite sides otii's center, and means to maintain wheel-supporting elements substantially horisonta tor practically all positions of said arm.

13. In a jack of the dharacter described,

0 between said logs, means to rocl said arm,

1d support to rock in a vertical plane the combination of a main-support having a pair of substantially-horizontal diverging legs, carrying-wheels for said support, a load-lifting arm rockingly mounted on said support to rock in a vertical plane between said legs, means to rock said arm, means 'legs, carrying-wheels tor said support, a

load-lifting arm rockingly mounted on said support to rock in a vertical plane'between said. legs, means to rock said arm, spaced elements carried by said arm to support a vehicle-wheel while engaging the under por tion of its periphery on opposite sides of its center, means to maintain said wheel-supporting element substantiz:lly-horizontal for practically all positions oi said arm, and means to prevent the wheel supported by such element from toppling over.

A. lifting jack, comprising a supporting frame, a bell-crank lever having a forwardly-extending load arm and a down wardly-extending power arm pivoted. on a horizontal axis thereon, a sleeve pivoted to the load end of said lever, a shoe mounted in said sleeve, a rod connecting said pivoted sleeve with the frame, and actuating means connected with said power arm.

16. A lifting jack comprising a supporting frame, a bell-crank lever having a for- Wardly-eXtending load arm and a downwardlyextending power arm pivoted to swing in a vertical plane on said frame, a sleeve, a pivotal connection between said sleeve and said power arm, including a bifurcation on one of said elements in which the other element is pivotally mounted, a shoe mounted for vertical adjustment in saidsleeve, a reach rod substantially parallel with said load arm pivotally connected to said sleeve and to the frame whereby said sleeve is maintained. in vertical position, and actuating means connected with said power arm.

17. A. lifting-jack comprising in combination, a supporting-frame, bell-crank lever having a torwawily-extending load-arm and a downwardly-extending power-arm pivoted on a horizontal axis thereon, a loadsupport hinged to said 1oad-arm, means to maintain said load-support in substantiallyhorizontal relation for all positions of said load-arm, and a seat-member adapted to. engage the lee d and mounted on said load-support with capability of turning about a vertical axis.

1.8. A hitting-jack comprising in combination, supporting-ttrame, a bell-crank lever having a forwardly-extending load-arm and a downwardlvextending power-arm pivoted on a horizontal axis thereon, a load-support hinged to said load-arm, a rod connecting said load-support tosaid frame to maintain the load-support in substantiallyhorizontal relation for all positions of said load-arm, and a seat-member adapted to engage the load and mounted on said load-support with capability of turning about a vertical axis.

In witness whereof I have hereunto set my hand.

' IRA A. WEAVER.

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