US1764472A - Lifting jack - Google Patents

Description

June 17, 1930. F. H. SCHWERIN LIFTING JACK Filed Feb. 21, 1929 m VENTOR A T TORNE Y j 00330341 101?" 01? PENNSSIZLVANIA,

Original emiliemtion fild'Mareh 2 1928, Seria1No.'258 1 i 4 v ezsyseriai o 1 illlieobj ect of the invention toprovidezi' "simple; convenient mid effectiveoperatingconnection between "a, rotary actiietiiigelenentof a jack and a rotary handle; whereby the handle is separable and Willdrivefthe f ,jactizating element With'the axes angularly k 1 out of alinement; A further obj ectis to cause the handle to be retained in engagement with 1 the] j sick, so 7 as to I enable the handle I to be' jused' both "in positioningjthe jack beneath an automobile or elsewhere and 'inr'withd'raw- -In the accompanyingdrawings forming pjai'thereofz r Fig-,1 is a sidee'levation ofejaok with a long extension ha-Iidle connected with the jack by means of the'invention, intermediate portions of the'handle, constituting mostof "itslength, being' blo ken out;

j Fig.2 is a sectional View of the p'ai'tjon-the inner endfofthe separable handle; shown in' a positioiiin r'elz tionto Fig. 'l ih which'it can be entered into engagement with thejeck;

Fig 3 is anend View of the, head on the actuating'ejlement of the jack illustrated in i .Figg isojanvei larged transverse 'The jack illustreted's oi theconstruction' i 7 'cleimed in my copending application Serial "',No.- '2 58,1 95, filed'Ma'rch 2,]1928yof-which-this applicationis a divisio1i It has a base 25 2; v top 1 7; gee-red toggle 1inks i6, 7, 8,"9, a'nd a] light and "left-hand Q screw-shaft 21 e which.

' paeseethroughnuts located atthe elbowsof v "'thdtogjgles; "The invention to be described is not.limited, however,to the particl lar section yp iof'j ka 1;

, *ThQjI'QtaIy actuating element, or shaft; 21 l"is p1fovided* with a ,squa.red, or "gene ally "polygonal or non oi'rculai heedi 23; *-The ,A' separat'e extension handle- 25 has opi'oject ions fork ca -n; be; entered ox fa f .HL-SGI-IIWERIN, QF BELLE'VUE BO OUGH, *PE DUFF-NORTON ANUFAomURmGfooMrANY,

495; iiiv aea aim this a iii v ien filed 'f ebilia ry I rotery'actiiatipg elementiofthe v]":ick, ,tl1 e; pins 27 1n engagement With the "grooves of the handle will th is ii eie and Y o i .v ack, and'thehandlec'a'n aeabeusedQ push" 60 31cm be longenoughito erve ase -he idle fo 3, betweenia rotaryg actuating element. and @111 3 ioth'e ljofig'ltlldlllal di'lxectidngii'd having 1011 gitudii'ial grooves in their" inner; portions; f V and fi-fQIkgCQhIlC-tfld Withqthejotherr of said elements] end-having internal retainer? pro o 1' ed tions fto engaget fse'id grooves, thejrelatioii being such 'thatjthe'hzindlej elemeiit is entered '-Ion end emoizedffom' the' jack when at e dee gagemeiit when straightenedlinore 01?; less aoes'iof this hezidgare convex- '01 moreoif less' aindtheilfiinnetportions-areiormed socket 26;;onits ,i1iner end,"} the siide fof ithis fo'rk hajing oinWaIdIyL PrOjecti g pihefor 27 dapted toexigege-the grooyes r 1 movedfro m the narrow,o flsheilkportioi of; '3 the part 23 'whenthefixesfof; the'paitserelf;c at a decided: angle, but wll e n jl the h endlez is straightened more or lesS in line owithlthef v QQQretainF the handlemgainst ooming-0E ei'deways and" j against being pulledhfikndwisez" ll-ota ti'oi' ff .o L

'I 'WertheF- the jack into place and tor drew.itioutefter- 1' ,the operation is over. :Thelo gitudinal con vexity of the facesiof theflhead23 eriables the Y handle to be held at, a ra'hge of inclinations and still to operatetheinemberQl; V The handle may be composed of two sec ltio'ne30=and 3lth21t czinjbe'taken apart,'thej e 'sectionsbeingconnected byiaysleevei28 fixedg,

, ha ing slotislfto' be engaged o; i i by pins" 29 i on the other "section The section 1 't'oone section andwithdrawing'the jack.f j 1 It [Will naturally suggest "itself the partsg23 Sand 26 might :be reversed -Withre i spect-to the'jack and han dle. d Whatl claim as*new{is z i j li i tin ja k, a epar C ne nexteneioi i eleriientyij:oolnprisifig a Squared 'headi-connectedjw th-one fofflsal i, elements thefacesyof 531d; head being" convex cidd jarigle gelri d is Cret'aifiedf against dis'e line with the aotua'tihgelementl 1 i

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