US1136007A - Automobile-jack. - Google Patents

Description

c. A. HART.

AUTOMOBILE JACK.

APPLICATION FILED SEPT- 10. 1913.

m J 1.15% M Patented Apr. 20, 1915,

THE NORRIS PETERS 60., PHOTO-LITHQ. WASHINGTON, D. C.

b ll @P CHARLES A. HART, or FINDLAY, onro.

AUTOMOBILE-JACK.

niaaoor.

Specification of Letters Patent.

Patented Apr. 2t), 1915.

Application filed September 10, 1913. Serial No. 789,116.

To all whom it may concern Be it known that 1, CHARLES A. HART, a citizen of the United States, residing at Findlay, in the county of Hancock and State of Ohio, have invented certain new and useful Improvements in Automobile-Jacks, of which the following is a specification. v

This invention comprises a lifting jack especially designed for use in connection with automobiles, the essential features of novelty residing in the provision of a base upon which the lifting mechanism and actuating means therefor are so arranged as to permit the former to be readily positioned a considerable distance beneath the vehicle preliminary to engagement with the part to be elevated.

Owing to the fact that the base of the jack is considerably elongated and the operating lever for the lifting mechanism spaced much more than the usual distance, the present jack is particularly advantageous for lifting the rear axles of the latest types of automobiles, said axles being located an unusual distance from the rear end of the body of the machine.

For a full understanding of the present invention, reference is to be had to the following description and the accompanyin drawing, in which:

Figure 1 is a perspective view of a jack embodying the invention. Fig. 2 is a side elevation of the same, the lifting head lowered. Fig. 3 is a front elevation of the 'ack.

J Specifically describing the invention, A in the drawing denotes the base of the jack, the same comprising an elongated member and carrying the lifting instrumentalities together with the actuating means for the latter. The lifting mechanism consists primarily of spaced standards 1 secured at their lower ends to the base A at opposite sides of the latter. The standards 1 are connected at their upper ends by the spaced horizontal plates 2 and mounted to slide vertically between the plates 2 and said standards 1 is the lifting head 3. The pivot member 4: forms a connection between the members of a pair of toggle levers 5, the lower ends of which are pivotally connected with the base A at 6, and the upper ends of which are similarly connected with the lifting head 3 by means of the fastening which is adjustable in openings in the head. The pivot connection 4; between the members of the toggle levers 5 also connects a pair of links 7 with the operating lever 8 which is located at the adjacent end of the base A opposite the lifting instrumentalities above described. The links 7 have a pivotal connection 9 with the lower end of the lever 8, the latter-having pivotal connection at 10 with the base. The pivotal connection 9 intermediate the parts 7 and 8 is so arranged that when the lever 8 is pulled downward away from the lifting head, a corresponding pull is exerted upon the links 7 and the toggle levers 5 whereby to straighten out said levers, a lifting movement being simultaneously imparted to the lifting head 3. At a certain point in the downward movement of the'lever 8, the pivot point 9 assumes a position below a line intersecting the pivots 4L and 10, the lever 8 being thus automatically locked in a position correspond ingly locking the lifting head in an up raised position. The lowering of the head 3 is accomplished merely by raising the lever 8 from the position shown in Fig. 1 to that illustrated in Fig. 2. When the parts are adjusted in the positions shown in Fig. 1 the levers 5 abut at their rear edges with a stop plate 11 which is attached to the standards 1 by means of hook bolts 12. Braces l3 connect the standards 1 with the base A and reinforce the standards from a direction opposite that at which the lever actuating means is disposed.

The jack above described is exceedingly simple in its construction and affords an assemblage of parts susceptible of ready adjustment, replacement and actuation.

The device is furthermore susceptible of use in the manner of all ordinary jacks of the vertical lifting type, though having a wider range of use than most of said jacks for the reasons hereinbefore presented.

Having thus described my invention, what I claim as new is:

1. In a lifting jack, the combination of a base, standards projecting upwardly there from in spaced relation, plates detachably applied to said standards at opposite sides of the same and connecting the standards together, a lifting head arranged between the standards and movable vertically in the space between said plates so as to be guided by the latter, toggle levers pivoted at one end to the base and having adjustable pivotal connection at their other end of the said head, stop means for limiting move ment of the toggle levers, an operating lever, a connecting link having connection with the toggle levers at the joint interme diate said levers, a connection between said link and the operating lever movable from o'tal connections between the lower toggle levers and the base located between the standards, a lifting head, a pivotal connec tion between the upper toggle levers and said lifting head adjustable in respect to i the latter, the head having axially alined openings to receive said connection, a pair of actuating links operable longitudinally between the spaced standards, a pivotal connection between the pairs of toggle levers also forming a connection intermediate said toggle levers and said links, an operating lever arranged at a distance from the standards and connected to the links for moving the links into a vertically alined position in alinement with and between the standards whereby to raise the lifting head, a pivotal connection between the base and said operating lever, a pivotal connection between said actuating links and said operating levers located intermediate the ends of the latter and at one side of the longitudinal axis of the lever and movable above and below the pivot of said operating lever, and a stop plate detachably secured to the standards at the sides thereof adjacent to the operatingv lever and limiting the alining movement of the toggle levers in the operation of'raising the head connected thereto.

In testimony whereof I allix my signature in presence of two witnesses.

CHARLES A. HART. Witnesses C. A. STOCKTON, CHLOE K. STOCKTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C.

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