US251020A

US251020A - Wagon-jack

Info

Publication number: US251020A
Authority: US
Publication date: 1881-12-20
Anticipated expiration: 1898-12-20

Description

(Model.)

D. G. BBNNER.

WAGON JACK.

No. 251,020. Patented Dec. 20,1881.

mlagmlmnr INVENTOR WITNES inq/ nv-Sminkwmd/w? u ATTORNEYS UNITED STATES PATENT OFFICE..

DANIEL G. BENNER, OF HOLMESVILLE, OHIO.

WAGON-JACK.

SPECIFICATION forming part of Letters Patent No. 251,020, dated December 20, 1881.

Application filed August 16, 188i.

To all whom it may concern Be it known that I, DANIEL G. BENNER, of Holmesville, in the county of Holmes and State of Ohio, have invented certain new and useful Improvements in Wagon-Jacks; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the/art to which it appertains to make and use the same, reference beinghad to the accompanying drawings. and to letters of reference marked thereon,which form a part ot'this specification.

My invention relates to an improvement in wagon-jacks, the object being to provide an article of this character which shall combine cheapness of construction and ease of operation with durability and efticiency in use, and which shall be adapted to be manufactured and supplied to the trade at a gieatly-reduced cost.

With these objects in view my invention consists in certain detailsof construction and combinations of parts, as will be hereinafter described, and pointed out in the claim.

In the accompanying drawings, Figure l is a view in perspective of a wagon-jack constructed in accordance with my invention. Fig. 2 is a view in front elevation thereof, and Fig. 3 represents a modified form of my improvement.

My improved wagon-jack consists of a triangular frame formed of two uptight parallel posts, A, the upright post B, the base C., and of the lifting-lever E, the forward end of which is located between the two pests A. The lower ends of the said postsA are secured respectively on opposite sides of the front end of the base O, their upper ends being secured in the same manner to a block, F, to which the rear post, B, is also secured. The space between the said posts A should be wide enough to receive the forward end of the Alifting-lever E and permit its free vertical adjustment between them. Two series of notches, G, adapted to receive the opposite ends of the pin H, which projects from each side of the frontend ofthe lever, are cut in the front faces of the posts A. A similar series of notches, I, is cut in the inner face of the rear post, B, to receive the gravity-loop J, which is secured to the lever Eat a point to the rear of the post B, and which locks the said lever in its dierent adjustments with the vnotches G of the posts A. The loop J may be (Model.)

substituted by a hook or other equivalent device, if found desirable.

Having described my invention in detail, I will now proceed to describe its method of operation.

The pin H is first engaged with any two of the notches G,-according to the height ofthe article to be elevated. After this has been effected the rear end of the lever E is depressed until tlie aiticle with which its outer end is engaged is raised to the required height. The lever is then automaically locked in po Sition by the engagement of the gravity-loop J with one of the notches I in the post B. When it is desired to lower the article lifted the loop J is thrown out of engagement with that one 0i the notches with which it has been engaged.

In the modified form of my wagon -jack which is shown in Fig. 3 ofthe drawings the upper face of the base O is provided with notches J for the engagement of the gravityloopin the lower adj ustments of thelever,wl1ich in this instance has a convex outer end, K, instead of a concave end, L, as shownin Fig. 1 of the drawings.

The gravity-loop J is provided with a rearward arm, b v the depression of which the engagement between the forward end of the loop and the notches of the post B or base O may be broken.

I would have it understood that I do not limit myself' to the exact construction shown and described, but hold myself at liberty to make such slight changes and alterations as fairly fall within the scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a wagon-jack, the combination, with the two upright posts A, each provided with notches Gr, the single upright B. provided with notches I, and base-piece O, of the lifting-lever E, having a pin, H, adapted to engage in the notches G, and furnished with a link, J, adapted to engage in the notches I, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 13th day of August, 1831.

DANIEL G. BENNER. Witnesses:

GEORGE D. SEYMOUR, CHARLES P. WEBSTER.

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