US550258A - Michael joseph dwyer - Google Patents

Description

(No Model.) I

M. J DWYER.

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N0. 55O;268. Patented Nov. 26, 1895.

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UNITED STATES PATENT OFFICE.

MICHAEL JOSEPH DIVYER, OF ANTRIM, PENNSYLVANIA.

JACK.

SPECIFICATION forming part of Letters Patent No. 550,258, dated November 26, 1895.

Application filed May 31, 1895. Serial No. 551,109. (No model.)

To aZZ whom it may concern.-

Be it known that 1, MICHAEL JOSEPH DWYER, of Antrim, in the county of Tioga, in the State of Pennsylvania, have invented new and useful Improvements in Jacks, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to jacks, and more particularly to lifting-jacks adapted for use in raising the axle of a wagon for the purpose of removing a wheel while it is being oiled, or to raise any other object desired.

My object is to produce a lifting-jack of the class above described, cheap and durable in its construction, easy of operation, and of great utility; and to that end my invention consists in the several new and novel features and combinations of parts hereinafter described, and which are specifically set forth in the claim hereunto annexed. It is constructed as follows, reference being had to the accompanying drawings, in which Figure 1 is a side view of the jack complete, ready for use. Fig. 2 is a view of the strap which holds the lever in any desired position. Figs. 3, 4, and 5 are details of the jack. Fig. 6 is a top plan view of the strapspring.

A is the standard, having ratchets a upon one side, mounted upon the base B, and having a lever O journaled in its upper end, as shown, one end I) being used as the handle and the opposite end I) for engaging with the axle or article to be lifted or raised. Upon the lever 0, between the handle portion and standard B, I journal a strap 0 0, one end of said strap being looped, so as to engage with the ratchet a, and the whole forming a lever.

To the handle portion of the jack, and just below it, I suspend a lever D. A strap-spring d is secured at one end to the handle and the and thus through the connecting parts form a tension upon the strap '0, so as to cause it to automatically engage with the ratchets. The inner end of the lever D, I connect with the upper and c of the strap for the purposes hereinafter set forth.

My invention is operated as follows: The jack is first placed in such a position that the arm I) will engage with the under side of the axle or article to be raised. The hand then grips the handle 6 and the free end of the lever D and bears down until the axle or other article is raised sufficiently high to remove the wheel or part to be removed. As the handle b is depressed, the strap 0 drops down and engages with the ratchet a, upon the standard A, where it is held until such time as it is desired to release the axle or other device,

when by pressing the free end of the lever D up against the handle, I force a link 6 and arm a down, raise the lower end of the strap 0 out of engagement with the ratchet a and allow it to pass over them.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

The standard A, provided with the ratchet a, the lever O, journaled upon the standard, and the U shaped strap 0 j ournaled upon the lever, and having its upper end project above the top edge thereof, while the lower portion straddles the standard and engages with the ratchets; combined with the short lever D, which is suspended from the handle end of the lever O; the spring d placed between the ends of the two levers, and the U -shaped link 6, which link connects the lever D and the upper end of the strap, substantially as shown.

In witness whereof I have hereunto set my hand on this 24th day of May, 1895.

MICHAEL JOSEPH DWYER.

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