US1466794A - Lifting jack - Google Patents

Description

Sept. 4/1923. 1,466,794 F. A. FRASER A LIFTING JACK Filed Dec. 8, 1922 awuemtoz I a. finder Patented Sept. 4, i923.

; ,7 FLEMING A. rnesnn, on NEW YOR n. Y.

LIFTING JACK.

Application filed Decniber 8, 1922. Serial No. BO 5Q575.

To ZZiu'Zzom-tmay com. 11,." l

Be it known'that Li Ff "Inc A. Fnasnn, a citizen of the United States, and resident of the city; county, and titate of New Yorlr, have invented a certain new and useful Improvement in Lifting Jacks, of which the ifollowing a specification.

This invention relates to an improvementin a lifting jack; particularly one of such form that it is specially adaptable tor automobile use or the like. I v

The object of this invention is to provide a device consisting" of but few parts so con structed that the device will be practically unlu-ealrahle; toiprovide a device in'which the customary pawl and i'atchet ;meclianisin is not used. and to produce a device which will be extremely eilective in operation and simple in construction 1 i With these objects an'd 'other objects which may hereinafter appear in view, I have devised the particular arrangement of parts hereinatter settorth and more particularly pointed out in the claims appended hereto.

Reference is to he had to the accompany.- ing drawing forming a part hereof in which Figure l is a side elevation of a lifting jack made in accordance with my invention, parts being" shown in section to disclose construction.

Figure 2 i. a sectional view on the line of Figure 1 looking in the direction of the arrows. I

Figure 3 is a sectional view on the line 33 of Figure 1 looking; in the direction of the arrows, and

Figure: i is a side elevation'of my improved lifting ack showing the same in lowered position. 7

Throughout the various views of the drawings. similar reference characters designate similar parts. 1 r

In the preferred embodiment of my invention. as disclosed in the accompanying drawingl indicates a base of the jack which consists of a flat section of material provided with a pair of? spaced uprights 2 oetween which the lever 3 is pivoted.

A pin 4; extends through the uprights 2 and the lever 3 and; acts as a bearing pin for the lever. The lever 3 may beof any desired length and ii desired. may be toldable or telescopic to permit the device to be carried compactly in an automobile.

This lever 3 is provided with a handle end andthe opposite end 5 ofsaid lever constitutes the lrftmg or'load-bearing end.

The end 5 ol the lever is connected to pair'of {downwardly depending: links 8 by means of a pin a 4 lever-3 and into slots Q inthe'links These links 8 are located on opposite sides; or faces of the lever 3 and are plvotally which extends through the connected at their lower ends to ahlo'ck ll) by means of. the pin llwhich passes-"through the lower ends of the links 8. and through the 'upperiend of the block 10. a

The lower'end ofthe block 10 block 10 to at all position. p U

The bloclrxlO is providedwith an eye 13 and, from this eye-13 to another eye "15 setimes assume. a vertical the links 8. 1 r

liVhen downward pressure is eXertedupo the handle 6 of the lever 33, thecar is raised and the block 10 swings forward toa verti i. cal position which it assumes readily by reason of'its weighted lower end 12.

The load-bearing end 5 of the lever 3 may then he lowered slightly until it restsdown upon the upper end of the block 10; which it can readily do. due to the fact that it is movable independenet of the links 8 by rea son of the pin and'slot engagement therewith. p v

The device. in its position of supporting a load, is shownin Fieurel where it will be seen that the pin 7 is at the lower end of the slots 9 and the load-bearing end 5 vof the le V p is provided with a weight 12 which tends'to cause the y cured to the lever 3 extends merr er cable ver 3. is resting firmly upon therupper end i of the block 10. i

To lower the jack. a cable or cord 14 is pulled so that the block 10 is swung about its axis 11 to the position shownin Figure 4: which causes the load-bearing end 5 of the jack to be lowered. 1 i 7 Atl6 and 17 are shown stops which act to regulate the pivotal movementof the links 8 to hold them in a more or less vertical position and to restrictundesirable swinging movement of said links.

One of the features of my construction is that through the connection of the block 10 to the lever 3 by means of freely movable links, the block 10 is held vertical at all times tosupport the load.

From the foregoing, it is obvious that my invention is notto be restricted to the exact embodiment shown but is broad enough to cover all structures coming within the scope of the annexedclaims. 3

What I claim is 1. A device of the class described cornprising apivoted lever and means for supporting the same, said lever having a loadbearing end and a handle end, a link connected to said load-bearing end and a supporting block pivotally connected to said link.

supporting block pivotally connected to the a'pair of links pivot-ally secured to one end i of said lever, each of said links being provided with a slot, means on the lever freely movable in said slots and a block pivotally connected to the lower ends of said links. 4. A device of the class described coinprising'a pivoted lever, means for supporting the same, said lever having a load-bearing end and a handle end, alink located on each side of said lever at the load-bearing end thereof, a pin on said lever extending through the slots in said links, a block pivoted to the lower ends of said links, said block having a weighted lower end, and a connection between said block and said lever.

5. A device of the class described comprising a pivoted lever, a pair of links connected to said lever at one end thereof in such a manner as to permit slight movement of said lever, independent of said links, and a block pivotallysecured to said links and provided with a weighted lower end. Signed at the city, county and State of New York, this 29 day of November, 1922. FLENHNG A. FRASER.

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