US1444796A - Jack - Google Patents

Description

Feb. 13;, 1923.

A. J. H. KUHSIEK JACK -sheet 1 2 sheets Filed Jan. 31

A TTOR/VEY Feb. 13,1923.

A. J. H. KUHSIEK JACK 2 sheets-sheet 2 INI ENTO amid ATTORNEY Filed Jan. 51,

Patented Feb. 13, 1923.

entree;

entrain earner enr ch. 1

ALBERT J. H. KUHSIEK, OF BIUHMOND HILL NEW YORK, ASSIG-NOR TO EDVIARD V.

EIARTFOBD INC, A GORPOBATIONOF NEW YORK.

JACK.

Application filed January 31, 1918. Serial No. 21 l,595.

To all err/1cm t may concern Be it known that I, .knnnnr J. H. liii'risum, a citizen of the United States. resuling at Richmmid Hill, county of Queens, and State of New York. have invented certain new and useful Improvements in Jacks, of which the following is a specification.

This invention relates to jacks in general and more particularly to jacks for vehicles such as automobiles and the like.

lhe principal object of my present invention is to provide a jack in which the operating mechanism for the lifting member n be positioned by a mere reciprocation of the handle so that the lifting member may be either raised or lowered as desired.

Another object of my invention is to provide a jack in which the lifting member is engageable by a plurality of pawls whenever it is raised or lowered,

A further object of my invention is to pro vide a jack in which the opposite sdes of the lifting member are engageable by pawls. one of which is always under the control of the operating means for changing the position of the load. and the other of which is arranged to hold the load when the operating means is not being manipulated. and to arrange the operating means and the last mentioned pawl so that that pawl may be relieved of the load whenever it is desired to lower the lifting member.

These and other features, capabilities and advantages of this invention will appear from the subjoined detailed description of one specific embodiment thereof illustrated in the accompanying drawings.

Figure 1 is a side elevation of a jack made in accordance with the present invention.

Figure 2 is an end elevation with parts thereof shown in section.

Fig. 3 is an enlarged fragmental'view, partly in section of the active parts of the jack in position to raise the lifting member.

Fig. 4 is a section on the line IV-IV of Fig. 3 showing the parts in position to raise the lifting member.

Fig. 5 is a section similar to that shown in Fig. 4- with the parts in position to lower the lifting member.

Fig. 6 is an enlarged fragmentary View partly in section showing the active parts in position to lower the lifting member.

Fig. 7 is another enlarged fragmentary view showing the parts in position to lower the lifting member with the lever depressed. Fig. 8 is still another enlarged frag--- mentary view showing the partsin' position to lower the lifting'member with the lever in its intermediate position.

Inythe embodiment shown there is pro vided a standard 10 having a centrally 10- cated passageway 11 therein for the reception of the verticallyslidable lifting member 12 which is illustrated having a load receiving shoulder-13 at its upper end with a lateral extension lat forming an auxiliary load carryingelement.

For properly guiding the lifting member or rack bar 12, the interior of the standard 10 is provided with two opposing guide rails 20 to accommodatev the grooves 21of the lifting member. At the upper end of the standard 10 there is an enlargement or housing 15 having a bearing at the lower portion of the open side thereof for mount-- ing an upwardly extending retaining pawl 16 to co-operate with the toothed side 17 of thelifting member 12. Extending through the open side of'the enlargement 15, and rearwardly on either side of'the lifting 1116111- ber 12 to the closed side of enlargement 15 are the bifurcations of the rocltable oper ating member or lever 19, such bifurca-tions- 15% being provided with pivots 22 in the form of studs which are disposed in the horizontal slots or guideways 23 in the walls of the enlargement 15. The slots 23 in the present instance are sufiiciently long to permit the studs 22 to travel a distance equal substantially to their. own length. vIT-o resilientlyretain the studs in either of two positions, one preferably at one end of the slot and the other at the other end. resilient members such as the clamping springsQa are provided. one on each sidewall of the enlargement 15. The clamping springs 2% are bifurcated" to provide jaws having two anchoring or retaining portions corresponding to the two positions aforesaid. The right hand end of the bifurcations 18, asvie-wed in the drawing are provided with a shaft 25 on which the lifting pawl 26 is mounted with its upper active end adapted to cooperate with the toothed side 27 of the lift-' The pawl 26 is provided with a pin 28 eo-operating with the flat cushion spring positioned on the upper surface of one of the bifurcations 1.8, and also with a spring engaging the pin 28 at one end, having a portion coiled around the shaft 2:5 and its other end secured to the side of one of the bifurcations 18, the spring 30 normally maintaining the pin 28 in engagen'ieiit with the spring 29. a

The pawl 16 is also provided with a spring 31 for normally maintaining it in engagement with the toothed side 17 of the lifting member 12, the spring 31 having one end engaging the back of the pawl 16, and a portion thereof coiled around the shaft forming the bearing for the pawl 16, and its other end secured to one side of the enlargement 15. v

The pawl 16 is also provided with a pin adapted to co-operate with the spring 3 1; which is fixed at one end to the operating member 19, and has its-other end extending obliquely downwardly and formed into a finger for engagement with the pin The operating member if) is preferably of the usual socketed type to receive an elongated handle portion 85.

The operation of the device is substantially as follows: hen the studs 22 are dis posed in the front position, that is, remote from the closed side of the enlargement the pawl 26 will be set and the pawl 16 will be controlled to raise the lifting member when actuated; the pawl 26 on the downward movement of the lever 19 first engaging the lifting member 12 when the operating member 19 is substantially in a horizontal position. In this position of the pawl 26, the pawl 16 will always engage the lifting member 12 both when the operating member 19 is raised or lowered, thiis always in position to instantaneously grasp the lifting member 12 when any part of the load is being withdrawn from the pawl. 26 as when the operating member 19 is raised to give the pawl 26 a fresh grip. 7

On the other hand when the lever 19 is bodily moved so that the studs 22 are in their rear position that is near the closed side of the enlargement 15, the tin-lin of the pawls 16 and 26 in their gripping action will be such as to permit the lifting member 12 to descend; I k

By means of the co-operation of the spring Swith the pin 33, the pawl 16 will be held. out of engagement with the lifting member 12 in the downward movement of the operating member 19, and only permitted to engage the lifting member 12 on the upward movement of the operating member 19 that is when the pawl 26 iswithdrawn from engagement with the lifting member 12, the

timing of the engagements of the pawls 16 and 26 w th the lifting member 12 being such that the lifting member 12 will be per mitted to descend a tooth-space whenever the pawl 26 is withdrawn and the load is taken up by the pawl 16.

It is obvious that various changes and modifications may be made to the details of construction without departing from the general spirit of the invention.

I claim:

1. A toothed lifting jack having a stand ard, a lifting member mounted in said standard, mechanism cooperating with the teeth on the lifting member for moving the lifting member upward 'or downward, said mechanism also including an operating member, a handle bar associated with said operating member, said operating member being longitudinally and bodily movable to assume a position where it will raise the lifting member or lower the lifting member as desired.

2. In a ack, a standard, a tootaed lifting member mounted in the standard, and means cooperating with the teeth on the lifting member for raising or lowering the lifting member, said means including pawl mecha nism and an operating member slidably mounted in the standard to have two opera ing positions, in one of which positions repeated manipulation f the operating member lowers the lifting member step by step, and the other position, repeated manipulation raises the lifting member step by step.

3. in a jack, a standard, a toothed lifting member mounted in the standard, means cooperating with the teeth on the lifting mem her for raising or lowering the lifting me1n her, said means including pawl mechanism and an operating member slidably mounted in the standard to hare two operating positions, in one of which positions u'ianipulation of the operating ii'ieniber lowers the lifting member step by step; and the other position, repeated i'nanipiilation raises the lifting member step by step, and means to rcleasably retain operating one or the other of said positions.

4;. In a jack, a standard, a toothed lifting member mounted in the standard, two pawls co-operating with said toothed lifting member, an o 'ie'rating member slidably' mounted in the standard, and means carried by the operating member to control the sequence of engagement of the pawls and lifting member whereby the lifting member may be raised or lowered by manipulation of the operating member.

5. In jack, a standard, a toothed lifting member mounted in the standard, two pawls co-operating with said toothed lifting mem her, an operating member slidably mounted in the standard, and means carried by the operating member and responsive solely to the position thereof, to control the sequence of engagement of the pawls and lifting member in ill) 7. In a ack, a standard, a lifting member mounted in the standard, means for raising or lowering the lifting membemsaid means including a slidably mounted operating member having two operating positions, and

bifurcated spring means to releasably retain the operating member in one or the other of said positions.

8. In a jacln'a standard having slots therein, a lifting member slidably mounted in said standard; pivots in said slots; an operating member mounted on the pivots, movable to slide the pivots in the slots; means operatively connecting the operating member to said lifting member; a handle bar for said operating member; and a spring member havln aws to retain said )lYOtS in one I u D u I position whereby said operating member may be operated to raise said lifting member and in another position whereby said op erating member may be operated to lower said lifting member.

9 In a jack; a standard having slots therein; a lifting member slidably mounted in said standard; an operating member having pivots in said slots; means operatively connecting the operating member to said lifting member. said operating member being longitudinally movable to slide the pivots in the slots; and means to retain said pivots in one position whereby said operating member be operated to raise said lifting member and in another position whereby said operating member may be operated to lower said lifting member.

10. In a lifting ark; a standard buying a slotted enlarged portion near the upper end thereof; a lifting member slidably mounted in said standard and having two toothed portions; a. pawl pivotally mounted at one side of said. enlarged portion; means for normally maintaining said pawl in engagement. with one toothed portion of said lifting member; a longitudinally slidable operating member having bifurcations, one on v either side of said lifting membeigsaid bifurcations being pivotally mounted. in the slots in said enlarged portion near the other side thereof: a second pawl pivotallv supported by said bifurcations near said other side of said enlarged portion and adapted to engage the other toothed portion of the lifting member, said second pawl having a pin adjacent the upper surface of one of said bi ber; a second pin on said. .ii it) named pawl;

and a spring on said operating memliieiysaid operating member being .longitudina slidable to permit the last mentioned spring tov co-operate with the seco'nd'nanred pm in one position of the'operating member to lower the lifting member. and slidable to another position to raise the lifting member.

11. In a lifting jack; a standard having a slotted enlarged portion near the upper end thereof; a lifting member slidably mounted insaid standard and having two toothed portions; a. pawl pivotally mounted at one side of said enlarged portion; means for normally maintaining said pawl in engagement with one toothed portion of said' lifting member; a longitudinally slidable operating member having bifurcations, one on either side of said lifting member, said bifurcations being pivotally mounted in the slots in said enlarged portion near the other side thereof, a cushion spring on one of the bifurcations; a second pawl piv-' otally supported by said bifurcations near said other side of said enlarged portion and adapted to engage the other toothed portion of the lifting memberrsaid second pawl having a pin adjacent the '-ushion spring on one of said bifurcations; means for normally malntainlng sald pm in such relation and said secondpawl 1n engagement with the lifting member; a'second pin on said first named pawl; and" a spr ng on said operating member, said operating member being longitr'rdinally slidable .to permit the last'mentioned springto co-operate with the second named pin in one position of the operating member to lower the lifting member; and slidable to another position to raise the lifting member.

- 12. In a lifting jack: :1 st

I 'lai l llilllliii' a slotted enlarged portion near the upper end thereof; a lifting memberslidably mounted in said standard and havin two toothed portions; a pawl pivotally mounted at one side.

of said enlarged portion means for norm ally maintaining said pawl in engagement with one toothed portion of said lifting member; a longitudinally slidable operating menr ber having bifurcations one on either side of said lifting member, eachof said bifurea-' tions having an outstanding stud mounted in the slots in sald enlargedportion near the other side thereof; a second pawl pivotally supported by said bifurcations near said other side/of saidenlar-ged portion and adapted to engage the other toothed portion the lifting member, said second pawl ha ing a pin adjacent the upper surface of one of said bifurcations; means for normally maintaining said pin in such relation and said second named pawl in engagement with the lifting member; a second pin on said named pawl; and a sprnig on said operau member said o ratin member b813 2 l n.

. F I o L ,1 7 ll) gitudinaily slidable to perm me last mi:- tioned s g to coope"ate with the in oosit .i. one on eithe adjacent the -m si'1 upper suriace 01. one or m'llfl D1LJ! C ;biOi lc, means for normally maintaining said pin in such relation and said second naawi in engagement with the lifting second pin on first named pa spring on said operating memb r,

said operating member being longitudinally slidable to permit the last mentioned spring to eo-operate with the second named pin in oneposition of he operating member to lower the lifting member, and slidable to another position to raise the lifting member.

14-. In a jack; a standard having slots ierein, a lifting member carried by sail standard, an operati member mounted said slots for both rectilinear movem along the slots and oscillatory about selected positions in the slots, means i "for operating the lifting member from the operating member, and means for retaining said operating member in such selected positions in s is. ,lots whereby n v be n'pulated to raise lower said l member according to the position selected.

1.5. In a ack, a standard, a lifting mem her, a series oi": ratchet teeth on two opposite sides or the lifting member, operating member pivoted in the standard :l "means ii rposed between operatin member and lifting member and associated with the standai l i to raise or to lower the lifting ber step by step, said means comprising two pawls, one engageable with one teeth, and the other pawl engageable with the other set of ratchet teeth, and "means regulated e operating member for ton trolling the s quence of such engagement of the operating .ith one series of teeth, a

retaining oewl carried .bv the standard 0 l 1 1 9 means urging tee retaining pawi towaru the other series of teeth, and means carried solely by the operating lever and responsi s' 'e to its position for overcoming the urging means disengaging the retaining pawl from the teeth when a load is on the lifting pawl and the lever is in theposition for lowering the load, said last mentioned means becoming inefieetive when the operating lever is moved to its extreme position while lowering the load.

17. in a jack; a lifting bar; a standard provided with bearings; an operating memher mounted for bodily movement along the bearings into either one of two operative positions and to pivotal movement about the learings; and means, associated with said member and controlled by the bodily movement thereof, for raising the bar whilethe member, in one operative position, is oscillated, and for lowering the bar while the member, in another operative position, is osoillated, said means including means whereby the thrust produced by the load being moved by the lifting bar is transmitted through the bear'ngs to the standard.

18. in a jack; a lifting bar; a standard provided with bearings; an operating member mounted for bodily movement along the bearings into either one of two operative positions and for pivotal movement about the bearings; and means, associated with said member and controlled by the bodily movement thereof, for raising the with step by step movement, whilethe member, in one operative position, is oscillated, and for lov ering the with a step by step movement,

'while the member, in another operative position, is oscillated, said means including whereby the thrust produced by the load being moved by the lifting bar is trans lnitted through the bearings to the standard.

19. In a aclr, a rack bar, pawl normally in engagement with said bar, a retaining dog nonially in engagement with. the bar, means i reciprocating said pawl, said means being movable into either one of two operative positions rel. to dog, and tor moving the dog out of engagement with the bar and releasing i and subsequently movingithe pawl out of engagement with said bar when said reciprocating means is in one of its operative positions, said means moving the pawl out of engagement with the bar during its down stroke when the reciprocatby the operating lever,

weaves ing means is in said position so as to permit step by step lowering of the bar.

20. ln a jack, a rack bar, a standard having bearings, a pivoted roclrable member, pawl normally in engagement with said bar, connections between said pawl and member for reciprocating the pawl, retaining dog normally in engagement withsaid bar, the member being mounted in said hearings to be bodily adjustable into either one or two operative positions relative to said dog, means actuated by the member when in one position for moving the, dog into inoperative position and releasing it, and means formoving the pawl out of engagement with the rack bar during its downward stroke subsequent to release of the dog.

21. In a jack, a rack bar, a rockable shaft, a pawl supported by said shaft so as to be reciprocated thereby and normally in engagement with said bar, a retaining dog normally in engagement with the bar, the shaft bein adjustable into either one of two operative positions relative to the dog, means for preventing engagement of said pawl with the bar until the pawl approaches the limit of its upward travel and for moving the pawl out of engagement with the bar as it moves downwardly when the shaft is in one position, and means for moving the dog out of engagement with said bar and holding it in this position during downward travel of the pawl and then releasing said dog prior to movement of the pawl out of engagement with said bar, when the shaft is in said position.

22. In a ack, a rack bar, a retaining dog normally in engagement with said bar, an operating shaft adjustable into either one of two operative positions relative to said dog, a pawl carried by said shaft so as to be reciprocated thereby and normally in engagement with the bar, means for preventing engagement of said pawl with the bar until the pawl approaches the limit of its up stroke and for moving said pawl out of engagement with the bar during its down stroke when the shaft is in one position, and means actuated by operation of the shaft for movin the dog out of engagement wit-h the bar an for releasing it immediately prior to movement of the pawl out of engagement with the bar when the shaft is in said position to permit step by step lowering of said bar.

2 5. A mechanism for actuating the lifting member of a jack, comprising an operating member having bifurcations adapted to accommodate the lifting member, outwardly projecting pivot means carried by each bifurcation, a shaft spanning the bifurcations near their outer ends, a pawl on the shaft, a spring intermediate the pawl and one of the bifurcations for urging the pawl in one direction, and a slotted support to accommodate the pivot means whereby the op ends,

for urging the pawl in Lone direction, and a cushion spring carried one of the bifiun' cations for limiting the movement of the pawl in the same direction. o

25. InaJja-ck, a standard, a toothed lifting member mounted in the standard, a pawl pivoted with respect to the ,standard and urged against the toothed lifting member by a spring, an operating member slidably mounted in the standard to have two operating positions, and a. device carried by the operating member which, when said member is in one ofiits operating positions, actuates the pawl away from the lifting member, and which is automatically rena pawl on the shaft, a spring intermediate the pawl and one of the bifurcations dered non-functioning by movement of theoperating member H30 the other operating position. i

j In a jaclg'a standard, toothed lift-v lIlgHIGIIIbQ-IYHIOUIltQCl in the standard, a pawl pivoted with respect ,to the standard and urged against the toothed lifting member by a spring, an operating member slidably mounted in the standard above the pawl to have two: operating positions and an ,obliquely downwardly extending member carried by the operatingmember which, when said member; is in one of its operating positions, actuates the pawl away from the lift ing member. v

2?. In a jack, a standardhaving vertical guideways for a lifting member, substantially horizontal guideways at one side of the vertical guideways for the pivots of a shiftable, rockable operating member, and bearings at the opposite side of the vertical guidewaysvfor a retaining pawl. j

28. In a jack, a standard having upper and lower vertical guideways for a lifting member and a housing intermediate the upper and the lower guideways, said hous ing being provided with walls spaced a greater distance apart than theguideways whereby to provide spaces between the walls and interposed lifting member, horizontal guideways in the walls at one side of the vertical guideways for the pivots ofa shiftable, rockable, operating member and bear" ings on the opposite side of the vertical guideways fora retaining pawl.

29. In a jack, a standard having a housing for the operating mechanism and provided with spaced apart walls each having a horizontal slot adapted to pivotally support a pivot member in a plurality of positions, and

iient member mounted on one horiwall and extending alongside one silient nien'iber having two anchoring to ernl'irace the pivot and hold it in either of two operating positions.

so. in a jack, a lifting bane standard provided with bearings, a pivoted operating member mounted in the hearings to be bodily adjustable into either one of two opera rive positions, and means associated with said member and controlled by the adjustment thereof for raising the bar when the member is in one position and lowering the bar when said member is in its er posi don, said means including pawl normally in engagement with the bar, the pawl being said 1e po tions liitting bar, a standard rings, a pivoted operating "i in the hearings to be bodily into either one of two operative positions, and means associated with said niernber and controlled by the adjustment thereof for raising the bar with a step by step movement when the member is in one position and lowering the bar when Said member is in its other position, said means including a pawl normally in engagement with the bar, the pawl being supported on the operating member.

lln a jack, a rack bar, a pivoted rockable member, pawl normally in engagement with said bar, interconnections between said V pawl and member for reciprocating the pawl and supporting the pawl from the member, a retaining dog normally in engagement with said bar, the member being bodily adjustable into either one of two operative positions relative to said dog, means actuated by the member when. in one position for moving the dog into inoperative position and releasing it, and means {or moving the pawl out of engagement with the raclr bar during its downward stroke subsequent to release of the dog.

33. lln a jack, a lifting bar, a standard provided with bearings, a pivoted operating ber mounted in the hearings to be y adjustable into either one oi two rative positions, and means associated l said member and controlled by the adustnient thereof for raising the bar when 111g reused or lowered.

in a jack, a lifting bar, a standard provided with bearings,a pivoted operating member mounted in the bearings to be bodily adjustable into either one of two operative positions, and means associated with said member and controlled the adjustment thereof for raisingthe bar with a step by step movement when the member is in one position and lowering the bar when said member is in its other position, the axis of the operating member being stationary when the lifting bar is being raised or lowered.

in a jack, a lifting bar, an operating shaft adjustable into either one of two'operative positions, and means associated with said shaft and controlled by the adjustment thereof lor raising the bar when the shaft is in one position and lowering the bar when said shait is in its other position, the axis of the operating shaft bein transversely shifted for such adjustment and being stationary when the lifting bar is being raised or lowered.

36. In a jack, a lifting bar, an operating shaft adjustable into either one of two operative positions, and means associated with said shaft and controlled by the adjust ment thereof for raising the bar with a step by step movement when the shaft is in one position and lowering the bar when said shaft is in its other position, the axis oi the operating shaft being transversely shifted for such adjustment and being stationary when the lifting bar is being raised or l0wered.

ALBERT J. H. KUHSIEK.

Images