US1460851A - Lifting jack - Google Patents

Description

'July 3, 1923. 1`,46o,851

J. KAUPERT LIFTING JACK Filed Sent. 24. 1921 2 Sheets-Sheet v2 Patented `luly 3,1923.

u UNITED; STATES PArENrorFic 1:.

JOSEPH Kao-PERT, or CHICAGO, ILLINoIs.'

Lrrrrne JACK.'

l i Application filed September 24,1921. -Seria1No. 502,934i` f f To alZZ wL-omz'tmay concern.-

` ofthis character especiallyadapted for lifting the axles of automobiles andthe like. n

A lfurther'object ofthe invention is the provision of a simple and `efficient device of this character Yby means o-f which a coinparatively large elevating movement maybe "une 7 7 of rig.4v 5; The preferred conveniently effected.

v' Other objects willappear hereinafter.' p

4The invention consists in the combinations and arrangements of parts hereinafter described andclaimed. The invention will be best understood by reference to the `accompanying 'drawings forming a part of'this speciiicatiom' and in which,l Fig. 1is a side view shown partly'in sec tion, illustrating a device embodying the 1nvention and shown in position offuser Fig. 2, an enlarged partial'side view Aof the devi'ceg. e' l Fig. 3, a section taken,substantiallyon line 43 3 of `Fig..2;' 'Y K Y e Fig. 4, a 'section' taken substantially on line 4-4 of Fig.2; i, Fig. 5, a partial top plan view of the device; c.

Fig. 6, a d etail'vie'w illustrating a folding joint employed inthe lift-ing `lever-ofthe device and `Fig..7, a section taken vsubstantially on form' of construction; as illustrated in the drawings comprises a suitable base 8 having anvupstan'ding hollow post 9 adjacent one end thereof. "Aflifting bar lO-is arranged'toslide vertically in the hollow post-9 and is provided atits upper end with a rest 11 adapted to rest underthe object to. be lifted. Thegbarv 10 isl provided with a'longitudinal slot 12 engaged by a bolt y13 extending transversely through the post 9 (and whereby vertical movements lofthe `lifting bar are permitted, but complete accidental removal of. the' bar prevented.\ rThebar 1,0 is also provided with a laterally vextending pln 14, and a swingingicatchxli-is provided onl the post 9 to ,enga/ge said pinto lock said liftingbar kin its depressedpos'ition soas to facilitate transportation, 1.- f The lifting bar 10:.fisprovided on one side with a plurality .of ratchet'lt'eeth 16 -cooperatingiwithalock rodl'v operatingfreely-.in inclined slots 18 formed `in the sides of postj9 on opposite `sides of the teeth 16y and whereby said lockingrod will automaticallyv engage with the `teeth16 to lock saidlifting bar-in its various lpositions of'vertical vadjustment. AThe'bar-17fisprovided with an operating linger 19connected with a string or'cable 20'by m'eans'of which said locking rod may be" withdrawn vfrom 'engagement with said teeth to permit of depressionof the lfiftingbar 10. A hollow fulcrum post 21 is pivoted at 22 between two `lugs ory ears 23 on the base 8 to permit of limited free lateral swinging `of said p-ost. At its bottom the vpost 21 is-proy i vided with a central notch 24-engaginfg a' if-shaped abutment 25 on the base. 8 and whereby the pivot 22 will be reinforced and rendered capable of standing heavyistrains. l

A fulcrum 'bar' 26 vis mounted for free vertical sliding inthe post'21 and is'proJ- videdkwith a longitudinal slot 27 engaged byatransverse bolt 28, as indicated, to per.y

mit' free vertical movements but. prevent-Y actual displacement; A notch`29 is provided in the bottom of bar 26 to accommodate the pivot pin 22. The bar 26y 'is also provided 4 witha laterally extending Vpin' 30,nand.'the

post 21 with a co-op'erating ylatch-'31 to lock f' saidbar against removal 'fromcsaid post when desired. y1 v A lockmg rod-'.32 is mounted in'inclined .slots 33 to co-operate with teeth`34 inthey rwhen desired.

` A'lever 35 istpivotally connectedy at36 y with thev uitingen mandat erwiththe upper end of the fulcrum bar 26. The lever 35 is provided'with la foldableeXtension 38 l pivoted thereto atp39 and provided with' a lateral extension 40 engaging under said lever, as` indicated, 'whereby `said lever` may be folded'when desired.-

In use the rest lll-is placed under the ob.- ject to be lifted, and the lever 35-38 manipulated to elevate said object, the fulcrumpost 2l and bar 26 swinging. laterally to. permitA of free manipulation of said lever. If the lift thus obtained is not sufficient, the lever 26 is raised to elevate the fulcrum bar 26 in its post 2l, whereupon the llever may be,l

utilized to again raise the lifting bar l0.' In this manner the objectto be lifted may be raised step. .bystep to. any desiredv lheight Within the capacity thereof. When it is desired to lo-vver the lifted object, the ful- Crum post is first lovveredby releasing the locking` nod32, and then the lever 35 is held to y.temporarily support the object, and the lifting bar 10 lowered by releasing the locking rod l?. In this Way the lifted object i ay be'. lowered stepfby step, and thnsre# turned to original position..l

lVliile li have illustrated and describedv the preferred forni of construction for carrying. my invention intoeffecnthis is capable of variation and modification Without departing from the spirit of the invention.r I, therefore7 do. not Wish to. be limited to the precise details of the constructionl set forth, but.l desire to avai'l myself vof such variations and modifications. as come Within` the. scope of -the appended claims.

Having described my invention, what l claim as new and. desire to. secure by Letters Patent, is

1;. A device of the class described; corn-k prising arverticallly movable lifting member; meansffor automatically" locking said; lifting member in various positions of vertical adjustment; vertically movable fulcrum member; means. for automatically locking member-gi ymeans for automatically locking said: fulcr'u-m: member invarious positions of Vertical adjustment; manuallyoperable means fori-ndependently releasing said automatic locking means; and a lever operatively connected, Wit/li both. ofsaid members, substantially as described..`

3. A device of the class described comprising.- a vertically; movable liftingl inembfer; afyertioallymovable laterally swinging. fnl'crum member; and a, lever operativel'y connected with bothi of said members, substantially as described.Y y

mt. Ai device-of' the classddescribed comrising a vertically movable lifting memlier; means for automatically l-oclingfsaid lifting member in various positions of vertical adjustment; a vertical movable laterally swinging fulcrum member; ymeans for automatically locking said fulcrum member in Various. positions of vertical adjustment; and a' lever operatively connected With both of said members, substantially as described.

5. A device of the class described comprising a vertically movable lifting member; means' fo-r automatically locking. said lifting member in` various positions of ver-I tical adjustment; vertically movable. laterally swinging fulcrum member; means. for automatically locking: lsaid fnlcrum member yin, various;l positions. of verticalad-y justment; manually Operable. 01' n dependentlyreleasing saidlockingy means; and a levery operativelyc'onnected with both of said members, substantially as described; i 6'. A device of the class described com.- prisinga base; anAripetaridingl hollow post on said base; a lifting bar vertically slid# able in said. postea. plurality voafratcl'iet teeth arrangedV along one side.. of said lifts ing bar; inclined slotslin the sidesy of said: post adjacent said teeth;A a locking rodarranged in said slots and. adapted to auto.- matica-lly engage said` teeth; manually operabley means forl withdrawing sai-d locking rod from saidteeth ;-a lever pivotally con.- nected With said liftingA rod1;a fulcruin bar pivotally connected vvithsaid lever andA depending there-from;a hollow fulcrum post, receiving said bar' for free. vertical` a,cl.''jii; stel kment therein, said fulcrum post beingpiyotally mounted; on said basega substantially 100 \/--shaped. abutment on,v said. base?.V contacting with j thebottom of said; flul'crum. post adj a1- cent. saidpivot.; ratchet teeth on'one side o-f said fulcrum bar; inclinedl notches in said; fulcru-m. post adjacent, said teeth;i a 105 I locking rod freely slidable said notches and adapted to-v engage said: teeth ;v andlmanually operable means for releasingsafidlast mentioned; llocking rod, ,substantially aszdescribed. 110

.7. A device of rthe classdescribed. comprising a. base; an: upstan-d'ing, hollow: post on said base; a lifting bar vertically able in said post.; a. plurality of? ratchet .j teeth arranged along one side.. o'fwsa-id lifting 115 bar; inclined slots, in.. the lsides off. saidv post adjacent saidteeth a locking rodi arranged in saidslots and, adapted. to automatically engage saiditeethc; manually opcrablevmeans for withdrawing; sai'dflockingrodfi'om said 12C teeth.; a lever. pino-tallyconneetedvvitl said lifting rod.; affulcrnm. bar pivotally coni nected Wit-h; saidleven andv dependent-'therefrgom; a hollow.` fulcrum ypost;neceivinfg,` said bar l for' free vertical'. adji'i'stnient'r therein, 125 saidfnlcrum postbeing.: pivotajlly mounted on.l said. base.; a. substantially" Vshap'ed abutment on said. base, co'ntalctingg'*` vvitlil tlije bottom of.; said fulcrum post adjacent Said 1,460,851. I y yg?,

crum bar; inclined notches in said ulcrum In testimony whereof I have `sifgfned post adjacent said teeth; a locking rod freename to this speciflcatonin the 1;)1esence.v of

ly sldable in said notches and adapted to two subscribing Witnesses. f engage said teeth; manually operable means JOSEPHv KAUPERT. ,s for releasing said last mentioned locking Witnesses: c

iod; and a oldable extension handle for JOSHUA R. H1 PoTTs, said lever, substantially as described. F 1mm C. APPLETQN.

Images