US136281A - Improvement in lifting-jacks - Google Patents

Description

s. TAYLOR.

Lifting-Jacks.

Patented Feb. 25,1873.

UNITED STATES PATENT OFFICE.

SYLVESTER TAYLOR, OF COLD WATER, MICHIGAN.

IMPROVEMENT IN LlFTlNG-JACKS.

Specification forming part of Letters Patent No. 136,281, dated February 25, 1873.

To all whom it may concern:

Be it known that 1, SYLVESTER TAYLOR, of Cold Water, in the county of Branch and State of Michigan, have invented certain new and usefulImprovements in Wagon-Jacks; and I do hereby declare that the followingis afull, clear, and exact description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon which form a part of this specification.

The nature of my invention consists in the construction and arrangement of a lifting-j ack, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring to the annexed drawing, in which- Figure 1 is a perspective view, and Fig. 2 a longitudinal vertical section of my lifting-jack.

A represents the base bar of my lifting-jack, one end of the same being pivoted between two bars, B B, and the other end between two other bars, 0 0. Between the bars B B is firmly secured a toothed or notched bar, D, and between their upper ends is pivoted a curved lever, G, by a pin, a. This pin passes through the end of the lever, and at the curve or bend the lever is pivoted between the upper ends of the bars 0 O by a pin, 1), the lever G thus forming the connection between the bars B B, and G C. When the lever G is thrown up the upper ends of the bars 0 are drawn in rear of the bars B, allowing the latter to drop down below the pivot 12. In this position the liftingjack is placed under the wagon or carriageaxle, the axle in one of the notches on the bar D. The lever G is then depressed, raising the bars B and turning the bars 0 inward under the bars B until they form supports and braces for the same in the position shown in the drawmg.

This lifting-jack is very simple in construction, yet effective in operation, and not liable to get out of order.

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

The combination of the bars A, B B, and O G, notched bar D, and curved lever G, all constructed and arranged as described to form a lifting-jack, substantially as herein set forth.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

SYLVESTER TAYLOR.

Witnesses H. L. SILLIK, N. P. LovnRIDGE.

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