US1895317A - Lifting jack handle - Google Patents

Description

Jan. 24, 1933. .1. GENICH I LIFTING JACK HANDLE Filed July 16. 1932 Patented Jan." 24, 1933 JOSEPF GENicH, of micmn, WISCONSIN; AssIGNoR ro WALKER MANUFACTU ING COMPANY, OF RACINE, WISCONSIN, A vCQIRIEOIRA'IJIOIT OF. WISCONSIN nirme incxl HANDLE y Applicatihn aid sury'ie 1932. Serial No. 622,890. 1 3

This invention relates to certain new and"- useful improvements in lifting jack handles, more particularly to a foldable' jack handle adapted-to be detachably engaged with a lifting j ack and to'be rotatedto operate the jack.

\ ore specifically the j ackhandle comprises in its preferred form, a pair of pivotally connected rod sections, the free end of one of which is formed to engage with the lifting jack, and the free end of the'othersection being formed with offset crank and handle members. A slide member or loop on' one section is adapted to be engaged with an end portion of the other section to hold themembers in substantial alignment when the handle'is extended to 0 rativeposition.

The principal ob ectof this-invention is to provide an improved ac'k handle of the type briefly described hereinabove and disclosed more in detail in the specifications which follow.

Another object is to of a foldable lifting jack'handle';

' Another object is to provide an improved locking means forholding the handlesections in substantial alignment.

the type herein disclosed.

: Other'objects and advantages of thisinvention will be more apparent from the fol-' lowing detailed description of one" approved form of lifting jack handle embodying the principles of this invention. In the accompanying drawing:

folded position. p v Fig; 2 is a similar view of the jack handle inextended operative position, intermediate parts of the two handle sections being broken away.

Fig. 3 is a detail side elevation ofthe pivotal connection and locking means when the handle is in extended operative position as shown in Fig. 2.

Fig. 4 is a section, taken substantially on provide an improved form of pivotal connection for thesectionsl Fig. 5v is a transverse section taken substantially on the line 5-5 of Fig; 4.

Fig. 6 is a transverse section'taken' subj stantially on the line 66 of-Figl. Fig. 7 is a transverse section taken substantially'on the line 7'f7 of Fig. 1. j

"Fig. 8 is a perspective view'of the pivoted end portion of one of the handle sections."

1- Figs9 is a perspective view of the locking oop. The handle comprises a pair of; rod sections A'and B, each of whichispreferably constructed of ordinary bar metal ofround I cross-section, although it will'be apparent as the description proceedsthat rod sections of other cross-section than round could be used ifdesired. The free end portion of-section A is provided with suitable means for detach} able connection with the rotary driving mechanism of the jack. In the vform hereshown the free end of section-A is'stamped into a head of somewhat enlarged square or other non-circular cross-section, as shown at 1,1 to en'gage'within a socket 2, of similar cross-section, formed in the rotatabledriving member 3,' ofthelifting jack; '(se'e'Fig. 2).

The member indicated at3 is usually a hub extending from adriving gear. or pinion mounted in the jack. Preferably a pair of locking balls 4 are mountedin a transverse channel 5 formed in the head l'andflare pressed out by an interposed spring Gagainst annular lips 7 which hold the balls'within V the channel 5. These balls maybe pressed 1 inwardly against the spring 6 whenthe-head 1 is insertedin the socket 2, and the balls {l a will spring outinto the recesses 8 formed in l is a n View ofthejack h n in 1' the member 3 to detachably lock the handle Y in engagement with the lifting jack. This locking means is well known in this art, and

is here disclosed 'by way of example,

The free end portion of the 7 other handle.

section B is bent at 9 and 10 to'form a later the handleis rotated.

ally extending crank portion 11 and ahan'dle 12 at theend of the crank, by;means *of which i The inner end portionfj'of each'of therod I pin or rivet 16. One faceof each flattened.

portionl l: is preferably formed substantially tangential to one side of the rod section, so 5 that the overlapped end portions of the rod sectionswill lie substantially in contact with one another; The; flattened 1 portion 14 of rod section B is formed closely adjacent the end of the section, but the'corresponding 10 the pivotal connection. NVhen the sections- Figs. 2, 3 and 4, the, short arm 17 ofsection A will lie parallel to andv closely adjacent the rodsection B,

.- A locking member or. loop is preferably. formed of. a small strip; or sheet of metal stamped intothe form best shown in perspective in Fig, 9. This loop member comprises two similar hollow cylindrical or tubular portions 19 which have open sides merging into one another, each tubular portion being ofa size'adapted to have a'close slidable fit over one ofthe rod sections A or B. One of'the tubular sections 19 of loop member 18 isformed' around the rod section B so that.

8&3, it is slidable and rotatable ltliere'o'mand. when. this loop 1 8-is moved to the position shownin Figs, 2,3: and 4, the other tubular portion 19 of the. loop member will be engaged over thesh-o'rt arm 17 of rod section A, thus hold- Bfi in-g tih'etwo 'rod members rigidly in substantial prolongation of one another.- When the handle isv not in use and is. to be folded, the-v loop member 18 is slipped back to some posi. t'ion, such as shown in Fig; 1, afterwhich the 93 members may be swung around the pivot pinor riveti1'6 to some suitable folded position, such as shown in Fig.1. 1t willbenoted that the loop member l8 can be'rotated about 7 the rod member B. on which it is mounted so 4. 3 as to. interferefas little as possible with the foldingof the .two 'rod sections intolsu-b stantially parallel relation withone another. When theloop member 18i's slipped into lockingposition, 1 the flattened portions 14 I 03which extend laterally at" the sides of the sections A and B atQO'aet as stopsto limit the connection. is

rigid. 5

a The round-bar material used a the handle flattened'portionl t of rod" section 'A is-spaced somewhat from-the end of th'e secti'on so asv to leave. a short arm 17 projecting beyond I i on section B, is always held in extendedposiare swung into substantial alignment or pro longation of one another, as indicated in tended portion of the loop} 7 5: ack handle can;

maintain a'stifi' and'rigid handle when the sections are extended and locked together by loop 18. V Y I By crimping in the sides of the loop 18 at 21 so that each halfof the loop encircles as much asPQ S bIe-Of each of the round bar sections .,A and B, thehandle is kept" quite minimum 5 and practically eliminated. The loop 1 8, which is freely rotatable and slidable tion at one. side of the section B so as to slip freely anzdeasily over the end 17 of section stiff and rigid when in extended operative position, and side play or swinging movement between. the sections is reduced to 'a A when brought into, alignment. with this ex- It will be'noted; that th-isjj be formed-by; a few. simple'stamping and punching operations: 1 Thehandlecomprises a very few simple and inexpensive parts; which maybe quickly Zformed and assembled, and although the partsare comparatively" smallfa'nd light in weight, the handle is strong and rigid when extended for use,

The handle is quite .compactlwhen; foldedand; the partsall lie flat insubstantially,a; single plane (see Fig. 1), so that comparatively;

little room is occupied in the toolbox. Icla m: I

A j ack handle comprising a pair of rodsectlons of substantiallycircular cross-sea= tion, the adjacent ends of saidrod sections being stampedto form, in each Case, a flat tene'cl portionone sideiof which isv substantially tangent toone side of thecircular rod "the two sections being overlapped at thesestamped ends with ;the tangential surfaces of the flattened portions in engagement, the

flattened portionsjbeing formed with aligned openings: a pivot pin s'ecured through the openings, the flattened portion of onelsec-j tion being spaced-somewhat from the end of the section so that the rod extends beyond the pivotal connection in the form of a short arm of circular cross-section, and a locking member comprising a loop offshe'et'materiah havingits opposite sides, 'crimpedf into form a pair. of. connected parallel tubular portions, one; of which. surrounds and engagesone of. the" rod sections and is slidable and rotatable.

on this section, and the other of whichfi's,

adapted to be slidably engaged in a similar manner about the shortarm'extension of the other section.

93 sectionsand'Bisparticularly adapted to V resist the torsional strains to whichFthis rotary handle is subjectedand the engaging flat surfaces of the portions 14: at'the pivotal joint between these sections relieve thepivot p YJOSVEPIF GEN IOHIT

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