US1651556A

US1651556A - Lifting jack

Info

Publication number: US1651556A
Application number: US558068A
Authority: US
Inventors: Santino Salvatore
Original assignee: LOUIS C BERMAN
Current assignee: LOUIS C BERMAN
Priority date: 1922-05-03
Filing date: 1922-05-03
Publication date: 1927-12-06
Anticipated expiration: 1944-12-06

Description

Dec. 6, 1927.

1,651,555 S. SANTINO LIFTING JACK Filed May 5, 1922 3 Sheets-Sheet l 5L 59 6i? fo- 42 ./i y 7W/7%." MN Mr Dec. 6, 1927. 1,651,556

s. sAN'rlNo LIFTING JACK Filed May s. 1922 5 Sheets-Sheet 3 Patented Dec. 6, 1927.

Param oFF-Ica SALVATORE SANTINQ. GF CHICAGO, 1211i1111151018J ASSIGNOR. TO- LOUS:.G. Y:BERVLlT, OF

i CHICAGO, LLINOIS.

LIETING JACK.

Appiieatipnfud May 3, 1922; seriai Naessgoss;

My invention'relatesto lift-ing jacks and ,hasfor one of, its'objects the provision of a simpleand eiieient lifting jack which can be ,operated ehciently by unskilledoperators. `Affurther object is the provision of a jack Off thecharacter mentioned Whichoperates easilyqand eiiicieiitly for both raising and lowering. loads.` f f Other objects willappear hereinafter. y Embodiments ofA my invention are illustrated ini theaecompanying drawings forming a para of this specification vand* in ivhiclkf.

Egsal and 2 arefsideelevations otopposite-sides-4 ofi a", jack embodying my invention; 7 l Eig..3; isasection takenon line 3-3Io'f Fia 2.: f v

Eigs. tend 51am. vertical sections loff'the deviceshoiving parts in dierentpositions; 6l is arear-rview. of the lower portion of thedeviceg'l f i kEiga/7, is anenlargedffragment showing a resilient' connecting linlr' used inv the construction; Y K

. Fig. S is. aIk longitudinal section, of the same/3;

Eig. 9;is aisideview of ajackofslghtly differenti form tha-nthat showniinfthe previous fgures'; f

Fig vlOfis averteal section of thev device shown invEig. 9|;andg

Rigi 11 is aiview taken on,line 11'-11'of Referring.- more particularlyi to thel drawings-,Ifh-ave. indicated a base 12in which an' upright-13m 'detachably eOnnected byl means orfya pinlt. Slidably mountedon theupright; 13 is :a lower-,head 15 and an upper heatlxlti` f Y lngthevupper head.16 is pivoted. a lever, 17 the latter carries a cam 18` whiehfis engaged bythe upper end Ofialink 19. rEhe latter; is pivotedon a pinV 2Q in lovver membei.' 15. The Aarrangei'ne-nt issuchgthat When lever;17 isloperated in the ordinary stroke in=use-1cam18wvill be rocked from; its position A,shownirrflig; 1.-,to-that sboxvnin Fig. 5, and .thisiroelringbfisaid'lever and cam moves the .members 15 and 16I `fr omstheir relative positions shownvin i'andr 5. These movementsofthemembersland 16 etects raisinfgiand lowerii'ign Weight.

lIn thevinemb'er 15. recessQl in* which bisinounted ajaw 22; Thetformof the-.jaw Y shovvn; is substantially semi-cylindrical)with teeth engaging the. upright 13, but anyd'esired shapemay be Oiiventhe jaw. Inmembei, 16 is a. recess having aniinclinedjsurface 23 and'in said recessis a javv holder 24; in `rwhich i's `mounted Aa` jaw 25 whichV maybe similar in shape to jaw` 22.

A Spring: 25 PleSSeS against a 4portiorrZ in, member l'and. a'short arm 28'onilink'19 so as to normally ten'dfto hold the j aWj 22 againstba'r In.V thel upper niember'-16is a springlQQ pressingagainst'a; portion 3010i said member 16' and thefbottom of'javvjhoiier 24' which With the, inelined surface 23:' and the correspondingly shapedv jawV holder' 211 tends to hold'k the jaw 2'5" against thief upright 15e.- 'i Y 1n the raisingoperation of the device; the leve-r 17v is operated so as to move thecam 18 between ythe positions shown in Figs; 4 and 5.; O'Winglto thedirection ofthe teeth on jaws 22' and 25 thisrocling of theeam makes the

members

15 and 16; climb-up on the upright 13 and this climbingvvill raise aveight on surface llon'member 16;

kAt thestop of member 13 is removably atinvertedand placedinfits dotted line posi tionoi Fig. 1 seas: to igaise the effectivetop surface of? member 16v for raising; and lower ing. Variousother uses may be madefof-'the `tached'f a jaw- 32 which can cooperate with UOV jaw 32a1i'd surface 31fas will be apparentato f those skilled in this art. v Y

"W'hen lettingV a` load7 down, step by step,

Vthe jaws 22', andQ must be alternatively moved out of "contact with y upright 13;, and to r*accomplishsuchL movement of" jaw 22 I have provideda springpressed stop 33 -'mounted'finmember 15 Witha spring 34 betweeny aisuita'ble` shoulder on member' 33V and a ,suitable portion of member 15", afs clearly indicate-d inlFigsft'and 5. nutvis preferablyV threadedbn" the bottomof Estop 334s@ asxto vary-the effective heightof saidtstop;

yThe'ptopofstopn is adapted to engage a stirrup 36fixed'on a 'pi'n 37 Whichis jour- 'naledlin member 16.' The'pin'l alsocarries Vloo Y acam' 38 Whichis adaptedto engage an'arm .Y

139 on the lower side of avv 'holder' 21.v When th'epin 37' is rocked,y nthe stirrupSGandt-he riemv will. bek brought inte position -jt'k 'op'- `1 and the stii'rup erate on stop 33 and arm 39 to alternately move the jaws 2&2 and :25 away from upright 13. On the entraide oit the jnck is an enlargement el() on pin 3T `\vith tivo `spaced lugs Ll1 and on Said enlargement Aiihand level.` @L3 is joinnnled on the pin 3T and hasl a. lngl elfi diepoeed between the lngsell and A connecting' linlt eoniprsing a. lionsini;` Lili is connected to the lever L13 asatll. In the housing l5 is a rod livhieh is pivoted to a lever i8 on lever 17. A spring 49 ie disposed in the housing;l lli and a` nnt 50 ie threaded on the rod l? and preeees` against a shoulder l. The arrangement is such that when pressure ie need to crnnpreee spring lil thennt can Ivield `aivay from the part- 5l. while when Ineeenre ie applied in the other direction on red Lll', mit 5() will engage the part land. malte a rigid connection of the connecting; link. The arrangenient `is such that Whenheiid lever .iein ite inll line `position in Figs. i and el. the device will be incondltion to lower a. weight, and .vhen

such lever is in ite lull line position in Figs. 2 and 5, the device will be in position to raise a` lend. 1When the device is in the conditionol'l Figs. il and the `stirrnp 36 `ivill be held ont nl the path ol :stop 33, thus permftting thejackto reise a` load. `then the device is in the condition shown in Figs. n 3G will bein position to engage thetop of stop 33, when the parts l5 and lll are brought `toward each other and thereby comprees Spring 234. The tension ol Spring 3l and the adjustment oli nut 35 will be such that when the spring is compressed to n `certain degree janv 22 will be removed 'romnpright 13, thus permitting the member 15. to slide doivn the rod. When the lever is moved in the opposite direction the tension will be .lessened oirspringr Srl and stop 33. thus permittingrjaw 22 to engage thenpiight `13. Then in thisclondition the cam 38 Will engage erm 39` and draw the jaiv holder` E241- downwardly against the ten-V and `remove jaw 'from the upright 13, thne permitting' the load 'lo be lowered on member 1G. Then the lever sion el spring' Q9 reaches the end olf its lastmentioncd direc# tion of movement and starts in the other direction both jaws wvill `first `be engaged against the upright 13 and then jaw 22 will be drawn a Tay fronjithe upright 13, thne` )ermitting the member l5 to slide down the ar 13 again. This relation of the parte `may be repeated to lower the vload any `distance Within the. length of the u1u-ight 13.

`In Figa. Elle Ill, inclusive. a .Slightly dit ferent torni ot the invention ie shown. This forni is particularly nsclnl 1to1?raising;` and huiveringr pleaenre automobiles.end the like. and in such an arrangement the bur 13 and `npper javv `holder move `verticali;T while the mounting` of the lowerjaiv holder is attached to the base. In this form, the hase has i hollow upright 5G in which is mounted the bei' i3. A, bearing is provided at 37 and another ae at tl in the housirnel 59 oi the nprrigght part 56. The bar 13 `may have a toe (3U 'l'or raising a load nearthe base and when the toe part 60 is provided a slot 6l is formed in one Side ol the upright 56. Also a guide (l2 muy be provided ttor a `stop member Gil which intended to limit the upward movement ol? bar 13 by. engaging the lower jaw holder. C f

In the housing .59 is an inclined surface (il aeaiinet which a jaw holder Geniounted.

ln thejawbolder (i5 is afiaw Gtivliich may be Similar in construction to

jaws

22 and 25.

Slidably mounted on the upright 13 in the honeii 59 ie a` elidingmember 67` ivhich line an inclined Snrlace (5S, upon which reste a jaivholdei" G9 and the latter has a jaw 70 therein similar to the jaw (i6. A springnl preses against the top of jawholder `60 and a suitable portion ol member (S7.` A spring TQ presses againet the top of jaw liolderfn and the lower part ofinember G7.

A lcveril may be plvoted es at 74th member titi and. provided with a short lever T5 to which is pivoteda link. The latter is pivot-,ed as al: 77 to one Side of member 6? "so that rockingr of lever 73 causes `vertical moveniento'l" member 67, and thiemoveinent togethenwith the iaive GG and 70 and the particular direction ef the teeth in such awe caneeeraising oi a load on the top of bar l2 or on toe (30 of eaid bar. The bearing 3S-is preferably cut away as at`78 to permit arm (33 lo page throngh such llearing to engage the bottom of `Jaw helder (to limit theup- Ward movement el the Upright 13. When the member E53 engages the bottom of jaw and S3 onmember GTL Saidlevere 80and` l Si also have j ioitione Wh ich engage the tops `ot' @clope Seil and 85. Said stope aieinonnted in Meere S6 on a sliding); memberST andthe latter lies an arm 88 thereon! Springe SSlare inserted between the enlargements ot stops dll-"and S5 and theparts S6. Ale-o on tliebot tome ol stops S4 and SF are threaded `nnte `90 to limitthe upward movements of Said Stops in the care SG. A pin 9i] has a` eam 92 thereonvhichv'hen rocked into" the position indicated in Fig. l0 engages the arml and raises the member 87 so as to bring the stops Sil and in the paths of arme `ol levere S0 and Sil The arrangement ieench that when the parte are inthe poeitionsinn dicated in Fig. 10 then oscillation of lever 73 will `canse lowering of `a load.` The Springe 89 preferably have considerable lll! loir` 11e1 n l 'izo n here emana than the @pelage n and 72 SO Vslide that'wh'n aloadfi's tojbe flowered, rockingof lever/ starting from the V positions of Fig. l() 'would Cause member B7 to be lowered, and

Since the leven-8() ieout of engagement with stop 84 jaw 70 lwould remain in contact with 'thief upright 13, thereby'permitting the bar l3`to carry the load downward. As soon as I velidably'mounted on'said bar, a raw mountf lthe 'Starte downward member 83 would move away from lever 81 and 'this would cause raising ofr the Jawholder itothelever 8l eiigaging the stop 85. lVh'en the lever T13 vreaches ite terminal oi'inove- 'ment stop 8 5 will permit levei'Sfl Ato move djaw holder @brand jaw 66 downwardly until the l'itterengagee barl 13 to hold the load. Then the movement oilever 73 in the' other directibn would-rame n'ieinber 67 again, and

@Willie i0 *lilfl eeeeeeeeier 118,4 ieri 69 would be movedu'pwardly, drawing Jaw 70 awa *frohibar 13l thueV ermit'tifno "the memy i l" ,A 1

vtolloe kmoved vupwardly withoutzmoving the bar; 13 up; YWhen the l'lever 73 ichee .its la'S't-in entionedl terminal of-move- )nent aw `will be disengaged from 'the b'aryas 'already mentioned'. to begin another :this bam; towardv member 87 'ator permit the latter to' dropdown so as' to render thestops 84 land, 85 inoperativewith `'respect to the a pair of slide blocks mounted. on said stand-v ard, alever pivoted on one offsaid slide blocks. alink having onerend pivotally con- Vneeted'with-said lever andthe other end pivotally connected with the other Yof VSaid slide blockS, a jaw carried by eachof said slide blocks for engaging said standard, a spring) (2o-operating with said link and the moving said last-named slideblock relative to said link to hold the jaw'thereon in engagement with Said standard, a stopV movably mounted on said last-named slideblock Vandmcvable relative to the .jaw thereon, a

- spring interposed between vsaid stop and slide block vand operative to exert force on Said block tending to release the Jaw thereon from said standard, and mea-ns onthe other of said slide `blocks forengaging said Stop lock pivotally connected thereto forV reslien'tly mounted 'stop on one oli 'said docks, :said stop being resiliently movable on fsaidbloek relative to the jaw' carried by *said block, an'da'inember adjustablymount- 'ed on the'other block 'and l'movable thereon into `and out of positionto engage said reeiliently mounted vStop.

3. A jack comprieii'ig a bar, two bloeks ed on each :oi the blocks land Veng'aging Said bar, a`leveroperatrvely connected with 'said blecks for moving the latter relatively to each other, 'a stop 'mov-ably mounted on one of -said blocks, aspiring engaging vsaid Stop and arranged to be compressed thereby,1s`aid V'stop being movable to compress said Spring while said jaw is Vin holding engagen'ient with'eaidbar, the Spring bel-ng arranged to re ase eaid jawv from vsaid bar when 'sa-id bleek lis relieved'o it'load, "and a etirrup mounted ohthe otherblock and vmovable there@ ihre' and out 'or position@ engage eaid stop for`coinpreseing Saidsprih'g.

` 4i. jack comprisinga bar; bloeke Slidably mounted on said bar; jaw'in one or" Said blocks; a `jaw holder in vthe other block;

a jaw in jaw holder; a Spring engaging said vjaw holder z't-n'dy normally' holding the last-mentioned jaw againsteaid bar; 'an arm 'on Said jaw holder; 4pin mounted in the liet-mentioned block; a movable member fixed on said pin; a resiliently mounted stop inthe path ofsaid movable menbemand a c'am on said pin 'adapted to engage said arm.

a lever pivoted to one ot' said blocks and 5. A jackvcoinpri'sin'g bar; upperjan'dlower blocks "slidablvy mounted 'on said bar;

connected with the other block; a jaw holder in theV upper block; a pin journaled in the upper block and having operative connection with -said lever; a stirrup fixed on Said pin; and a resiliently mounted Stop in the lower block in the path of saidV stirrup.

6. A jack comprising a bar; lower and upper blocks mounted onsaid bar; a lever pivotedV to said upper block'and connected with said lower block; a stop slidably mounted in said lowerV block; 'a spring between Said block and said Stop and a portion of the lower block; a, nut adjustably mounted on said Stop: and a, member on the upper block adapted toV be engaged by said Stop. 7.,A`jack comprising a bar; upper and lower vblocks slidably mounted on said bar;

a jaw in the lower block; a jaw holder in the upper block; a jawrin said jaw holder;

Vttor.engagement withsaid stirrup for disengaging the in the lower block vfrom Said bar.

8. A jack comprising a bar; two blocks Slidubly mounted on Said bur; u lever pivoted to oneof Suid bloeks;`:\ link connecting the lever with the lower` block; upinpivoted in the upper block; a jew holder in theupper block;` u com ou Said `pin adapted toenguge said jaw holder for moving the lutter reletivelv away from Suid bar; un ope utive oon- `neetion between the pinund lever; u. thumb lever on Suid piu :for rotating;I `the lutter respectively o'f the connection between sind `pin and lever; :1 Stirrup on the pin adopted for movement between seid blocks; `und o resilient Stop mounted `in the lower block. 9. A gael; eomprising u bur; Itwo blocks slidubl)v mounted on Suid bar; e lever pivoted to one or' the bloele und connected with the other blork for moving Suid blocks relatively to each other on sind bar; epm ]0ur fueled in one of eaid bloelte; ai jaw holder in the luet-1nentioned block withun erm nd- ]neent said pin; o com on the pin in the path of said army-.1` spring in the.lnetnnentioned block engaging said jaw holder; a` thumb lever pivoted `on seid pin: a eonneetionybetween the thumb lever und lirst-inentoned lever; on enlurgementon Suid pin having two spaced stops thereon; e.` stop `on the blocks slidabllv mounte n thumb lever pivoted on Suid pin `a housing pivoted onsaidthumb lever; :trod having pivotal Lonneel'ion with Suid first-mentioned lever und extending into said housing;` and u spring in the llousingbetween 2i `portion olz lhelutter und ny stop `on said rod` il. A jock eomprieing"a` bur; `upper and lower ljiloeke on suidbur; a. lever pivotedto the upper block; o linltpivoted to Suid lever und the lower block; n. pin mounted in the i upper bloehg` u `thumb `lever journnled yon Suid pin; :i resilient connecting link pivoted it one end `eccentric:olly` to the axis ofsnid lust-mentioned lever mulpivoted at its` other lever: `two spared lugs on seid pin; zulu on the thumb lever between the lugs on sai pin; e com on said pin; ajew holder in the upper bleek adapted `to engage Suid oom;

und :i stirrupon the pin adapted engage u stop on fthe lower member.

nivoted on one of `the blocks and operatively connected with the other block; a pin journuled in one of the blocks; elever` on the pin; n resilient eonnectinglink `between the lever on seid pin and the retmentioned lever; u stirrup on said pm adapted for movement between said blocks; und ef resil` lent stop onone of the blocks `adapted for enneigement by seid stirrup.` i `l u In testimony whereof l` have vsigned my nu me to this specification on this 1st day` of Muy, A. D. 1922.

` sALvAToRn" SANTINO.

5o end eecentrieally to the :mis of the thumlo`