US2672243A

US2672243A - Jack with adjustable load-receiving table

Info

Publication number: US2672243A
Application number: US251773A
Authority: US
Inventors: Ernest J Marsh
Original assignee: BEN GOLDBERG
Current assignee: BEN GOLDBERG
Priority date: 1951-10-17
Filing date: 1951-10-17
Publication date: 1954-03-16
Anticipated expiration: 1971-03-16

Description

March 16, 19754 I E. J. MARSH y, 2,672,243

JACK WITH ADJUSTABLE LOAD-RECEIVING TABLE Filed 001:. 17, 1951 2 Sheets-Sheet l March 16, 1954 E, J, MARSH 2,672,243

JACK WITH ADJUSTABLE LOAD-RECEIVING TABLE Filed Oct. 1'?, 1951 y 2 Sheets-Sheet 2 4e me IN V EN TOR.

BY M ajm CZ 011/2655 Patented Mar. 16, 1954 JACK WITH ADJUSTABLE LOAD-RECEIVING TABLE Ernest J. Marsh, Chicago, Ill., assignerV to Ben Goldberg, doing business as Towbar Sales 0o.,

Chicago, Ill.

Application October 17, 1951,` Scrallilo,251,773v

This invention relates to lifting jacks and is concerned more particularly with improvements in the subject matter of my copending application Serial No. 186,829, filed September 26, 1950, now Patent No. 2,621,891, entitled Wheeled Scissors Jack.

It is an object of my invention to provide a lifting jack with a load receiving structure adapted to be adjusted to occupy various tilted positions to cradle loads of variousr shapes or occupying various positions.

Another object is to provide a load receiving structure which may be readily tilted't-o the desired angle and then securely held in the selected position.

HA further object of the invention involves a load receiving structure having an overhang adapted to be reversibly mounted to locate the overhang where it is best suited to the particular load encountered.

An additional object is to provide a jack including a load receiving structure which is universally tiltable and securable in the desired adjustment.

Further objects and advantages of the invention will appear as the description proceeds.

The invention will be better understood uponV reference to the following description andthe accompanyying drawings, inA which:

Eig. 1 is a front elevational view` of a lifting jack embodying features of the invention, withV portions shown in section;

Fig. 2 is an enlarged sectional view partly broken away and taken as indicated bythe line 2--2 of Fig. 1;

Fig. 3 is a bottom view taken as indicated by the line 3 3 in Fig. 1;

Fig. 4 is a sectional view with portions broken away and taken as indicated bytheline 4--4in Fig. 2;

Fig. 5 is a View similar to the upper portionA of Fig.v 1 with the parts ina diierent' adjustment; and

Fig. 6 is a sectional View taken. as-indicated by theline 6 6 in Fig. 3.

Referring now more particularly vtothe drawings, there is shown an understructure which may take the form of a wheeled base lmounted on four casters l0 and comprising a channelY IZ to whose web I4 a channel bracket I6 is welded or otherwise secured. Sets of lower scissor link s I8 vare pivoted tothe bracket flangesl and to a collar 22 anda nut 24, respectively, receiving an adjusting rod 26, and a sleeve 28 affixed at 30 to. one end of the, rcdandspaced fjroniiua collar..

22 by a washer 32 hasalateraljhole for, the. reception of the. removable offset. endv 36 of' a cranking rod 33V adapted. t0. be, turned by the operator in opposite directions to move the. colllar and nut toward and wayy fromeachother.

Sets of upper scissor links42' are likewise ar'- ranged at oppositel sides of' theV adjustment roti 26, the upper ends of. said/.links being' pivot'ally, connected at 44 tothe depending1l'zi1r1`f,.f.es.46V of' an invertedchannel bracket., 48'. stabilizing ylinks 5c' are connected to certain offl the scissor links' i 6 and L52Y to complete the scissor jack.

It is apparent from the foregoingfthat' the web 54 of the upper bracket 48 ofthe4 scissor jackt mechanism will always be parallelto the 'web of the base bracket I6, irrespective ofthe adjustiment of said mechanism.

A load receiving table em'lrxodying,features-of" my invention is indicatedtgenerally at' and'is adapted to be removably connected to the upperuv flanged bracket 48 vvof the'elevating; mechanism. To this end the table 69`includes an adaptor 64V having a webl 66, adapted to overli'e thewcb 54" of the bracket 48; andr depending endfianges 68'.

and l0, theange 68 being in the form of ,a hookA adapted tok receive one end,12 of the bracket web 5c and the 'ange 10 extending vertically4 and threadedly receivingscrewsl'; the inner ends of which are j arranged to' underlie the" bracket web, and the bracket viiari'ges 46straddle the lower portions of the ends ofthe hook ll);

so that the adaptor may be releasably'secured'A An open inverted box-like body ti'is` arranged` over thefadaptor 64 and includes' a Ii'ange'8|u having a depending ear 82 and an opposite 'del pending'iiange V84, strad'dlingf'and .tilt'abl'y con-'- nected at 86 to two opposite, depending'flanges"` Sand 89 ofthe adaptor 64",*thetiltaxis'being located preferably substantially'closer' to' one" end of the adaptor and body than totheother" end.l An L-shaped piece 90j' is welded or lotherwisesuitably joined to the outer face of the ear..

82 with a depending armZ-'formi'ng withl the ear a fork affording spacedbearingssfor/ an. in-`L ternally threaded cievis. pin. 94V receiving thef,

threaded. end portion- 96. .of an; adjusting.'I rod 98,

The :flange 86 has a depending tongue IGZbent'.

into4 U- shape to providemutuallyfacing vertical portions |04 .serving 1as bearings fon-,aclevis pin;-

|08 of the rod 98, the pin being flattened where the rod enters and leaves the same for the reception of thrust washers ||0, a collar ||2 being secured to the rod adjacent one of the washers and between said pin and the clevis pin 94. A sleeve ||4 is disposed about the rod 98 adjacent the other washer and is held in engagement therewith by a nut ||6 engaging the threaded end ||8 of the rod, a lock nut |20 engaging the other side of the nut.

It is now apparent that pursuant to rotation of the rod 98, the clevis pin 94 will be moved toward or away from the clevis pin |06, as the case may be, and thus the body 80 will be tilted one way or the other relative to the adaptor 64 about the axis of the pivot pins 86 and will be securely held in the selected position by the adjusting mechanism, the rod thus constituting in effect a turnbuckle. The operator rotates the rod 98 simply by applying a wrench to one or the other of the nuts ||6 and |20.

The load receiving table unit 60 includes a table top |24 comprising a plate |26 with a plurality of holes |28 adapted to receive load cradling mechanisms |30 which may be adjusted to conform to the lower contour of the load, an example of which is shown in dot-dash lines at |32 (Fig. 1), depicting the housing of a rear axle and differential. It is unnecessary to enter into any detailed description of the cradling mechanisms |30 since they form no part of the present invention and are fully disclosed in my said copending application.

Brackets |34 welded or otherwise suitably secured to the bottom face |35 of the plate |26 straddle and are titlably connected at |36 to opposite walls |38 of the body 80, the pivot axis being disposed at right angles to the axis of the pivots 86. Screws |40 threaded through lugs |42 extending laterally from the flanges 8| and 84 of the body 80 are engageable with the bottom face |35 of the plate |26 and serve to fix the angle at which the plate extends with respect to the body.

The table top plate |26 is preferably dimensioned and arranged to have a substantial cantilever overhang, as shown at |46, relative to the remainder of the load receiving table unit 60, to accommodate a load congured so that it extends at one side substantially beyond a directly overhead position relative to the adaptor. And where convenience or necessity demands, the unit 60 may be reversed so that the portion |46 will overhang in the opposite direction. This change requires nothing more than the backing up of the adaptor screws 16 to free the adjacent end 12 of the jack bracket 48, swinging the table adaptor 64 up free of the bracket, reversing the table, rehooking the adaptor over the bracket, and readjusting the adaptor screws under the bracket end 12.

From the foregoing, it is apparent that the load receiving table top |24 may be adjusted to any desired angle or list relative to the body 80 about the axis of the pivot |36, and to any desired fore-and-aft angle relative to the adaptor 64 about the axis of the pivot 86, so that the table 60 is capable of universal adjustment relative to the adaptor, and the table may selectively occupy reversed positions relative to the jack bracket 48 to overhang in either of opposite directions.

Plates |50 may be secured to the base l2 to form therewith a container |52 for tools, etc.

Various changes coming within the spirit of 4 my invention may suggest themselves to those skilled in the art. Hence I do not wish to be limited to the specific embodiments described or uses mentioned, but intend the same to be merely exemplary, the scope of my invention being limited only by the appended claims.

I claim:

1. In a lifting jack having elevating means, a bracket having a web and supported on said means, an adaptor having a web arranged to overlie the web of said bracket, said adaptor web having spaced pierced depending flanges embracing said bracket, an open inverted box-like body having pierced side and end walls arranged to embrace said adaptor with the openings of said flanges and side walls being in registration, pins received in said openings and pivotally securing said box-like body to said adaptor whereby the same is tiltableabout a horizontal axis, screw means associated with said box-like body and said adaptor for eecting a tilting adjust- -inent of said box-like body, a load receiving table comprising a table top having a pair of depending pierced legs embracing the end walls of said box-like body and with the openings of said end walls and said box-like body being in registration, pins received in said openings and pivotally securing said load receiving table to said boxlike body whereby said table is tiltable about a horizontal axis disposed transversely to said first mentioned axis.

2. In a lifting jack having elevating means, a bracket supported on said means, an adaptor having a web arranged to overlie said bracket, said web having spaced pierced depending flanges embracing said bracket, means associated with said adaptor for securing the same to said bracket, an open inverted box-like body having pierced side and end walls arranged to embrace said adaptor with the openings of said flanges and said walls being in registration, pins received in said openings and pivotally securing said boxlike body to said adaptor whereby the same is tiltable about a horizontal axis, said adaptor and said box-like body each having a depending yoke, the said yokes being arranged in alinement and the legs of each being pierced to receive a pin, a manually rotatable rod swiveled in one of said pins and threaded in the other for effecting a tilting adjustment of said box-like body relative to said adaptor, a load receiving table comprising a table top having a pair of depending pierced legs embracing the end walls of said box-like body and with the openings of said end Walls and said box-like body in registration, pins received in said openings and pivotally securing said load receiving table to said box-like body whereby said table is tiltable about a horizontal axis disposed transverse to said rst mentioned axis.

3. In a lifting jack having elevating means, a bracket having a web and supported on said means, an adaptor having a web arranged to overlie the web of said bracket, said adaptor web having spaced pierced depending flanges embracing said bracket, an open inverted box-like body having pierced side and end walls arranged to embrace said adaptor with the openings of said flanges and side walls being in registration, pins received in said openings and pivotally securing said box-like body to said adaptor whereby the same is tiltable about a horizontal axis, screw means associated with said box-like body and said adaptor for effecting a tilting adjustment of said box-ilke body, a load receiving table comprising a table top having a pair of depending pierced legs embracing the end Walls of said boxlike body and with the openings of said end Walls and said box-like body in registration, pins received in said openings and pivotally securing said load receiving table to said box-like body whereby said table is tiltable about a horizontal axis disposed transverse to said first mentioned axis, said box-like body having a pair of spaced screws spaced substantially equidistant from said rst mentioned horizontal axis and engageable with the underside of said table top for securing the same in a desired degree of tilt relative to said box-like body.

ERNEST J. MARSH.

References Cited in the le of this patent UNITED STATES PATENTS Number Number Name Date Stephenson et a1. Sept. 26, 1950 Wood Feb. 19, 1952 FOREIGN PATENTS Country Date Great Britain of 1911