US938806A - Lifting-jack. - Google Patents

Description

LE ROY WILLOUB..

LIFTING JAUK.

nrmcnloz run 1411.25. nano.

938,806. Patented Nov.2.1909.

e 190.9%2702z r LE BOY WILLOUB. 0F ASHLAND. OHIO, ASSIGNOB 0F ONE-HALF T0 C. G. PHILLIPS, 0F

BLAND, OHIO.

LIFTING-JACK.

Specification of Letters Yatent.

Patented Nov. 2, 1909.

Applteatton led January 25, 1909. Serial No. 474,067.

To all ulwm it may concern:

Be it known that Ln Rov 'iLLoUn, citil zen of the United States. residing at Asht land, in the county of Ashland and State of f, Ohio, have invented certain new and useful Improvements in Lifting-Jacks'. of which the following is a .specification My invention relates to lifting more particularly to mechanical picks, the object thereof is to provide a Simple und exceedingly :strong jack, which may be quickly adjusted up to the load, and which i may he readily and quickly dismantled, cer l tain parts thereof removed, in order that the g same may he packed away to occupy a minil mum of space. l

["urther objects and advantages of myl l i l! l l l present invention will be apparent to those skilled in the art, from the following de- `oeription, in which reference is made to the aecompanyinfr drawings, illustrating my invention, and torniing a part of this specifica tion, and in which,

Figure 1 is a side elevation of my improved jack in the o )erative sition. is a central vertical sectiona view through the saine, the upper portion of the lift hat' l heingbroken away,and,li`ig.3 is a face view t of the toothed operating wheel. y ln the practical embodiment of my inveni tion, l novide a tubular upright 1, provided with flanged su `po1tin, l; base .l, having I strengthening welis 3, and provided in one of its walls with an enlarged opening adjat cent its upper end, and communicating with l the interior thereof. Mounted to move vert tically within the tuhular Support l, is a lil't l l Fig.

har l, provided with a saddle 5 upon its up per end, and with a rat-k tl upon its faire, eontignous to the open side, of the said tnhular support l. As lshown, the rack is formed hy i elliptical projet-tions, and is adapted to he engaged hy the, spiral or eonvolute flange T, t t'oruud integral with and upon one l'ato of n l geur or toothed wheel S, whiih i5 rotutalily l mounted upon one ond ot' u tuhnlar tt'ansl vorne up )er end '.i. of a detatfhalile frame lt), l provider with side Illingen' ll nt itsV lower l end, having inwardly extending opposing trunnions lli. for detachable engagement within slotted euro til, extending from the uuid tuhnlar supportl l at. the hase of the L ut'orenwntioned opt-ning in one sido thereof. i

gagenu'nt of thtl 'lhe transverse tubular portion 9 of the frame l0 supports upon its o positc end, in loose rotative relation, one eng of an operathandle 14, which handle 14, and the ing toothed wheel 8 are held upon said frame por tion J hy a headed bolt 1.3 and its washer l'.

Connection hetnet-n the operating handle l-l and the toothed wheel t5 consists of u double endl-d pawl li', embodying a semi circular body portion pivoted centrally upon vmid operating arm nt l5, and provided with n yShort handle lJ extending at right angles. thereto, and from a point adjacent its pivot, and the body portion o which i-i provided with a U-shaped bracket Qt), which may he formed integral therewith or secured there to, which bracket is adapted to receive one end of a coil pring 2l, hooked therein, the other end of which .airing is secured at 22 upon the said operating handle 14. Thun the )awl 1T, may he swung, by mean.l of its haut le 19, to lot-ate the hook end of spring 2l at either end of the bracket 2t), thereby permitting of an intermittent rotation of the said toothed wheel 8, and in either direction, hy the engagement of n selected end of pawl 1T, with the teeth thereof. 'lhus it will he heen, hy the pivotal detachable eulrame l() upon the support. l, to hold the toothed wheel S in engagement with the. lift har, that Quid wheel and said frame muy he swung outwardly u nm the trnnnions lil, in order that the said il't har may he quickly raised hy hand to the lower surface of the load to he lifted. and the. frame then swung hack to engage the tlauge T ot' the toothed wheel 8 with the rack (l.

ln order to prevent accidental movement ol' the frame ttl, to disengage the toothed wheel S from the lift hurl, n lever 2li is. ttentrail) pivoted upon the upper rnd of the tubular support l to roving in u vertical plane, and is provided with nu ollset lower end lo engage over the peri lnrnl edge of toothed wheel S when huid ever is. in the vertical position.

Willi tht` tort-going demriptiou iu mind, it will he readily :wen that. thtl |n|rtienlnr styles und ulnipm` of tluI various portions ol' in v devia-o muy he readily changed should auch u change provo deniroua, and l therl` Fori wish to reierve the right to malte `auh changes which may be necessary, without departing from the spirit or scope of my inY vention as defined in the appended claims. Having fully described my invention, I claim:

1. In a liftin jack, the combination of a vertically mova le lift bar, a support for said lift bar, an operating wheel havingl operative engagement with said lift bar to t raise and lower the same, relatively engage able means for mounting said operating wheel upon said lift bar support for ivotal swinging movement with relation t ereto, and for detachment therefrom. and means for rotating said wheel, detachable therefrom. substantially as described.

2. In a liftin jack. the combination of a vertically niovi said lift bar, an operating wheel having operative engagement with said lift hai', to raise and lower the saine, relatively engageable means for mounting said operating wheel upon said lift bar support for pivotal swinging movement with relation thereto,`

and for detachment therefrom, means for rotating said wheel, detachable therefrom,

and means for holding said wheel and its rotative means in the operative position, sub stantially as described.

3. In a liftin jack, the combination of a vertically mova )le lift bar, a support for said lift bar having outstanding slotted ears, au operating wheel for engagement with, to raise and lower, said lift bar, a frame carrying said wheel having outstanding members for engagement in said slotted ears to main-- tain said wheel upon said support for swingin movement with relation thereto and detac ment therefrom, and an operative handle for rotatin said wheel.

4. In a lifting jack, the combination of a p le lift bar. a Support foru vertieall)r movable lift bar, a support for` saidlift bar havin outstanding slotted ears, an operating ivliee for engagement with, to

raise and lower, said lift bar, a frame carrying said wheel havin outstanding members for engagement in said slotted ears to maintain said wheel upon said support for swinging movement with relation thereto. and detachment therefrom. a member mounted l upon said support to hold said wheel in engagement with y*aid lift bar, an operating handle ioin'naled upon said operating wheel frame, and connections between said handle and eaid wheel for rotating the latter.

5. In a lifting jack. the combination of a vertically movable lift bar. having a rack formed thereon. a support for said lift bar, a toothed win-el having operative engagement with said lift har rack, to raise the said bar, a frame carrying said wheel having detiiehable engagement upon a portion of said support, an operating handle joiirnaletl upon said frame, and a spring controlled paivl carried h v said handle, and ir. engagement with said wheel, to rotate the latter, substantially as described.

ti. In a lifting jack, the combination of u vertically movable lift bar. having a rack formed thereon. a su pport for said lift bar, a toothed wheel having operative engagement willi said lift bar rack, to raise said bar, a frame carrying said wheel, having detachable engagement upon a portion of said support. an operating handle journaled upon said frame, and a spring-controlled reversible pawl carried by said arm, and in engagement with said wheel, whereby the saine may be rotated in two directions, to respectively i'iiii-e and lower said lift bar, silbstantially as described.

In testimony whereof I atlix my signature in presence of two witnesses.

LE ROY WILLOUR.

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