US1545223A - Jacks - Google Patents

Description

July 7, 1925. 1,545,223

M. wEsTRA-rE JACK Filed Apl 1, 1925 A TTORNE Y.

Patented July '7, i925. l I

, l.warren s'rArs iira'rrimwy WESTRATE, cian-alemn mirrns, irIcHIGAN.

applicaties mp4 prix l1, i925. -se'rial No. 19,843.

To aZZwhom it may cof/wem.'

. .Be it known that I, MATTHEW WESTRATE; a citizen of theJUnitedfStates, residing at (handRapids, inthe county .of Kent and State of Michigan, have invented new4 andv useful Improvements in Jacks, of which the 'following is a specification.

.The present invention relates to meclianical organizations and the samein connection Kwith-jacks and the like; and its object is to provide an improved mechanical organizationfof the character hereinafter dethe like is scribed, and the same in connection with a lifting jack.

This and any other objects hereinafter appearing are attained by', fand the invention finds preferable embodimenty in, the mechanism 'hereinafter particularly described in the body of this specification and illustrated by the accompanying drawings, in which Figure 1 is aside View of a jack;

Figure 2 is a verticall central sectional..

view of a portionthereof;

Fi ure 3 is a horizontal sectional 'View o?l certam parts'taken on line 3-3 of Figures v1 and 2;

Figure 4 is a horizontal sectional view of certainparts taken on line 4.-'4..of Figure l; Figure 5 is en -end view of certain parts; Figure 6 is avertioal sectional view of certain parts taken on line 6-6 of Figure 1 arms 4, -5, carrying the top member. 6 adaptfl edto engage the axle or other art of the automobile being raised. Each o these arms isv formed of parallel members as indicated in various views, the upper ends ofeach l:pair of arms being swingably connected to the lower ends of the pair above,'by bolts 7-passing through spacing sleeves 8, except that the upper ends of the short uppermost pair are swingably connected by a bolt 9 to the top member 6; and the arms of each pair (except the uppermost pair of short arms) being swingably /connected in the middle.

In the lowermost pair of arms-being arms 2 and 3-y-such swingableconnection is efected by Ibolts 10l passing through their middle portion and tireaded in a block 11.

This block has an axially 'vertical `bore 20v in whi-cha nut 12 vhas an axial movement limited by its' radial flange 13'b'elow the block, this nut being held non-turnably in axially verticalscrew 16'isl 'journalled at 17 on the base 1 andxisthrealded in the nut 12.

the bore 20 by means'of its spline 14 slidf l able 1n the keyway 15, of the block. An

The lower ends. ofthe lowermost pair 2, 3

of the armsare'swingably connecte 'by bolts 18, 19 to a pairof blocks 40,. 41 respectively,

which are slidably movable horizontally in the gi`11des 22, 23 ofthe base. These blocks' 40, 41 have axially horizontal bores 24 in which nuts 25, 26 respectively have an axial movement limited by their radial vflanges 27 adjacent the outer ends of the blocks, these nuts 25,26 being held non-turnably -in the bores 24 by meansof their said langes ber' ing slidably guided inthe guides 22, 23. A horizontally axial shaft 28 journalled at 30 1n the base `has right-hand and left-hand -screw portions 31, 32A threaded in the nuts 25, 26,-respective1y. A bevel'gear 33 on the vshaft 28 meshes with lthe bevel gear'34' on the vertical screw 16, so that the rotation of this shaft will rotatesa'id screw.

In the position ofthe parts seen in Fig- -ure 1, the arms 2 and 4 are approximately at right angles to the other arms 3 and 5 of the respective'pairsl thereof, thej radial flange l1 3 of nut l12 engaging the lower end. of the block 11 and the radial llanges'27 of the pair,of, nuts 25,26engagingthe outer ends o-f the pair` of blocks 40 and.- 41

respectively. i

Inthis position, ,the flange 13 is about to disengage the block 11 and the flanges 27 have just l been brought into engagement vwith the blocks 40, 41 in the operative or raising f'movementv of after explained.

WVhen the top member 6 is its lowest i position (the lazy-tongs structure being vertically collapsed), the lower ends of the arms 2 and 3 are separated to their farthest Vthe jack, as herein-y extent, the flanges 27 being farthest away from the blocks 40 and 41-respectively, and the block 11 rests on the flange 13. The shaft 28 being now rotated to raise the top member 6 in the jacks operative movement,

' the vertical screw'l is rotated,` thus raising the nut'51'2 and block 11 with it and causing the top member 6 to rise. During this operation, the flanges 27 approach their blocks ll, il respectivelyc v When the arms erel raised to approximately the position seen in Figure l, these anges 2 7 engage vthe blocks All); 41 and thus lcontinue the operative movement of the jack, but, at this juncture the blochll is carried out of engagemeiit with the flange 13m? not It willv thus be seen that. power to reise the jack is first app-lied to. the block ll, land then to the .block-s 4G' and il to continue such lll raising movement, the power thus operating to the best advantage in either case.,

A coiled spring 55 is desirably providedv .between the block ll` end'flengell to cushl scribedzswingab-ly connected arms; ineens ion -the transition of operation between block ll and blocks 40 and el. A crank Snot shown) ma f be applied to the driving sieft connected by a universal joint 5i ,to the shaft 28, and this shaft 50 may be laterellgT moved in a vertical direction into end out cfa beeriog 52, 'on the base, openn ing upwardly at 53, provided for the purpose of folding the parts together ccm-4 pectly, .l

lit' will be seen. thet tlm mechanical organizatioii. abovedescribed may be applied4 to other uses than to operate` c liftingl Ajack, and desire to claim, the same broad y. The invention being intended be pointed out in theclaims, ienotto be llmited or by details of' construction of the per-f ticular embodiment thereof illustrated,- by the drawings orhereinbefore described.

I'cleim: 1. In `mecl'ianism of the character' de- 'acting upon' the ends of the arms for causing an interreletive movement thereof to a limited position; means operable in coni nection with the first-mentioned Ineens, and acting upon the armsfadjacent their swing able Ycomiection and iml a. direction= trans verse to the direction of the action of the"Y .first-mentioned ineens? for continuing said movement of the arms from lsaid position.

f2. In mechanism ofthe characterdescribed: swingebly connected' arms threaded means acting upon the'endsof the arms for causing: an interrelative movement there of; threaded nieces operable in connection with the first-mentioned means, and acting upon the arms 'adjacent their swinggcble `conne-lotion and in adirection transverse to the direction. of the action of the first-mentioned means-for conti'miing said movement of thee-rms,

, 3. In mechanism of the character describedx'a bese; a block; arms swingably connected to the block and having ends in-1 tei'reletively` movable horizontally a nut lia-ving a non-turning limited ax1al .movem ment relatively to the block; a screw journalled on the bese and threaded in the nut;

Lees-,eee

a bloeit horizontally movable on the bese and swingably carrying an end of an arm; a

nut having a noi-turning limited' axial \ment reletiveljgr to the'block; a screw jour" nailed on the base and threaded in the nut; a block horizontally movable on the basey and sivingablv carrying an end of en arm; a mit having -a non-turning limited axial movement relativelyto the lastwmentioned block; a sc1;.efeT journclled on the base and. threaded in the lestonentioned mit; ineensv for rotating one of the screws by" the rotation 'of the other;V cushioning means interinou diate ooe ofthe blocks end the not axially movable relatively theretoa 5. ln mechanism ci the character dem' scribed: a, bese; a block; armev swingably connected to the blocliand having ends interrelat-ively movable horizontelly; a nuthavingL a nonturning limited axial movement relatively tothe block; e. screw jour-f nalled on the bese and threaded in the not;

a peil of blocks horizontally movable 'on the bese and svvingebly carrying seid ends respectively; e pair ot nuts having a lioneA turningdiinited axial movement relatively to the blocks respectivel;r of said pairthereof; ,schaft jocnalled on the bese' end havmg rdglithand .sind lett-hond threed in' vthe nuts respectively7 of said screw portions pair; Ineens intermediate the screw andA thev j shaft for rotating one-by the rotation of v mechanism of the character deu scribed: a bese; a block; armsetvingably connected to the' block and having? ends interrelatively movable horizontally; a mit havingaJ non-turning limited civiel movenallegl on the bajseand threaded in the nut; a Ypair of blocks horizontally movable on the base and swingably cerryingj said ends respectively; a" pair of vmitshaving anonm turning limited; axial' movement relatively to the blocks respectively of seid pair there'- of; a 'shaft journalled on the base and having 'right-bend and left-hand screw, portions threaded in the nuts respectively of, said pair; meshing, gears on the screw and ebelt respectively.

7. ln mechanism Aof vthe character demi I scribed: aA base having; en u vverdly-open bearin to vthe il movable horizontally; a mit having a nonea e block; arms stringa ly connected ook and having ends interrcletively' im yment vrelatively to the block; a screwjour- 1,545,2aa y .turning limited axiall movement relatively to the block; a screw journalled on the base and threaded in the nut; a block horizonltally movable on the base @and swingably carrying an end of an arm; a nut having a non-turnlng'hmlted axlal movement relatively to the last-mentioned block; a screw v journalled on the base and threaded in the last-mentioned nut; means for rotating` one of the screws by the rotation 'of the other;

a shaft universally-jointed' with the last-l mentioned screvv and laterally movable into and out of the open bearing.

8. In mechanism of the character de'- scrihed: swngably connected arms; means .acting upon theends of the arms, and means v operable in connection lwith said means and v acting upon the arms .adjacenttheir swingable connection and in a direction transverse-r other -andone of -said means continuing theA movement of the arms from the Vposition to which the other of said means-had moved the same.

4In testimon Whereo I have hereunto set my hand at.. randRapids, Michigamfthis 218th day of Mardi7 1925.

MATTHEW WESTRATE; y

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