US255820A

US255820A - Carriage-jack

Info

Publication number: US255820A
Authority: US
Publication date: 1882-04-04
Anticipated expiration: 1899-04-04

Description

W. J. SCOTT.

GARBIAGE JACK.

(No Model.)

No. 255,820. Patented Apr. 4,1882.

n. PCIERS. Pllclo-Lilhngmphcr, Washmglon. 0.6.

UNITED STATES- PATENT OFFICE.

WILLIAM J. SCOTT, OF BOSTON, MASSACHUSETTS.

CARRIAGE-JACK.

SPECIFICATION forming part of Letters Patent No. 255,820, dated April 4, 1882.

Application filed December 7. 1881. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM J. SoorT, of Boston, in the county of Suffolk and State of Massachusetts, a citizen of the United States, have invented a certain new and useful Improvement in Carriage-Jacks, of which the following isa full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature, in which-- Figure 1 is a side elevation of the improved jack. Fig. 2 is an end view back of the line as x of Fig. 1. Fig.3 is a cross-section on the line y 3 of Fig. 1.

The object of this invention is to provide a cheap, strong, and eflicient wagon or carriage ae r.

In the drawings, A is a vertical standard or post, made of metal, either cast or formed from a flat bar by bending it at the upper end, a, bringing the sides together, and then forming it outwardly at a, and then at right angles to the sides at a to form the openinga and the feet a by which the standard is bolted to the wooden or metallic support a Of course if the standard is cast it will have the same general shape.

The notched piece or support B preferably is made in one casting, although shownin two parts in the drawings, and has adownwardlyextending post or arm, I), which is secured to the support A by means of the metallic straps b, and this post or arm is lifted vertically upon the vertical standard by means of the link 0, which is pivoted at c to the lower'end ot' the post or arm I), and at c at the end of the lever O. This lever is pivoted at c to the post or standard A, the pivot being a bolt which extends through the two parts orlegs of the support. This provides for a very strong construction, and one not likely to get out of or der easily. By lowering the lever the link 0 isthrown in toward the support and holds the notched rest in its elevated position until the lever is lifted. The jack thus constructed, while mostly of metal-being all metal except the base-piece c -is very light, and at the same time strong, eflicient, and durable.

It will be noticed that the lever (J is pivoted to or near the base of the standard below the arm 0, and that the lower part of the arm is connected with the end of the lever which is below it by means of the link a. This construction, by giving the lever a very lowleverage, adds very much to the efficiency ot' the jack, as it is not necessary to be as careful in its. operation as it would be if the handle were pivoted near the upper part of the standard. Moreover, it brings the handle into a lower position in relation to the working parts of the jack, and more out of the way. lt will also be noticed that the straps I) bear the same rela tion to each other, whatever the position of the bar I) in relation to the standard A.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States-- In a wagon-jack, the combination of a. vertical metal support, A, the notched rest B, its vertical arm b, the straps b,holding the arm to one side or surface of the support and fastened permanently to either the arm or support, the lever U, shaped as described, pivoted at the base of the standard, and the link 0, all substantially as and for the purposes set forth.

WILLIAM J. SCOTT.

Witnesses:

F. 1 RAYMOND, 2d, W. U. Foee.