US555091A

US555091A - Lifting-jack

Info

Publication number: US555091A
Authority: US
Publication date: 1896-02-25
Anticipated expiration: 1913-02-25

Description

(No Model.)

P. M. GUNTER.

LIFTING JACK.

,091. Patented Feb. 25, 1896.

UNITED STATES PATENT OFFICE.

PLES MILER GUNTER, Oh CHERRY LAKE, FLORIDA.

Ll FTlNG-JAC K.

SPECIFICATION forming part of Letters Patent No. 555,091, dated February 25, 1896.

Application filed October 18, 1895. Serial No. 566,108. (No model.)

To all whom, it may concern:

Be it known that I, PLEs MILER GUNTER, a citizen of the United States, residing at Cherry Lake, in the county of Madison and State of Florida, have invented certain new and useful Improvements in Lifting-Jacks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to lifting-jacks.

The object of the invention is to provide a device of this character which shall be simple of construction, durable in use, and comparatively inexpensive of production, and which may be readily engaged with and disengaged from the vehicle with but little effort on the part of the operator.

IVith these objects in view the invention consists of certain features of construction and combination of parts which will be hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a side view of my improved lifting jack, showing the position the parts assume when in operation; and Fig. 2 is an end view.

In the drawings, 1 represents the base, and 2 the vertical parallel standards, which are secured at their lower ends to the base.

3 denotes the lifting-lever, which is pivoted between the upper ends of the standards by a bolt I, and which has at its outer end a series of notches 5 on its upper edge to engage the axle of the vehicle. The lower edge of this lever is provided with teeth 6.

7 denotes a pawl which is pivoted to the standards below the lever and is adapted at its outer end to engage the teeth of the lever. lhe inner end of the pawl is connected to a spring-actuated hand-lever 8, pivoted to the inner end of the main lever by a cord 9, which engages a staple 10 secured to the inner end of the pawl and passes up through a staple 11 secured to the lever and is secured to a screw-eye 12 carried by the hand-lever.

In operation the lifting-lever is placed beneath the axle of the vehicle and is then depressed, the outer end of the pawl sliding along its under side until it engages the teeth, thereby holding the vehicle elevated. To remove the jack from the vehicle, the hand-lever is depressed, which will cause the pawl to be withdrawn from the teeth and allow the outer end of the lever to swing clownward and set the vehicle upon the ground. To strengthen the standards at the points where the pivot-bolts pass through them, I have secured to each standard the metal cufis 13.

Should the cord or rope that connects the hand-lever with the weighted end of the pawl become stretched to such an extent that the depression of the hand-lever will not free the pawl from the teeth, by giving the screw carried by said hand-lever several twists or turns the cord may be wound around said screw, thereby taking up any slack.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

In a lifting-jack, the combination with standards, a lifting-lever secured thereto and provided with teeth on its lower edge at its outer end, a pawl pivoted to said standards and having a weightedend for normally holding its other end in engagement with the teeth of said lever, a hand-lever supported by the lifting-lever, a connection between the handlever and the weighted end of the pawl, and means for varying the length of said connection, substantially asset forth.

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

PLES MILER GUNTER.

Witnesses:

Row. J. PATERSON, Tnos. Z. MARTIN.