US334627A - James weathebs - Google Patents

Description

(No Model.) J. WEATHERS.

LIFYTING JACK. No. 334,627. I Patented Jan. 19, 1886.

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UNITE STATES PATENT OFFICE-o JAMES WEATHERS, OF INDIANAPOLIS, INDIANA.

LIFTlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 334,627, dated January 19, 1886.

Application filed October 5, 1885. Serial No. 179,018. (No model.)

citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Lifting-Jacks, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to improvements in lifting-jacks, and isdesigned to produce a jack for light or heavy work, it being especially adapted as a wagon-jack. The design of this jack is such that the lift is effected by means ofa friction-clutch,thus dispensing with ratchet bars and pawls and with gearing.

In the drawings, Figure 1 represents a perspective view of the jack, and Fig. 2 a detail section of the clutch.

On a suitable base, A, is raised a standard, Bi consisting,preferably,of a rectangular bar. Projecting from one side of said standard,near the top thereof, is an eye, 0, and at the top, and projecting in a direction opposite said eye, are cars D. Passing between said ears and resting against said standard parallel therewith is the lift-bar E, provided with ahead,F, and afoot, G, preferably of the shape shown. Near the said foot are two ears, H, on said liftbar and embracing said standard. Through the ends of said ears H passes a bolt or pin,I, acting as a pivot for a camlever, K, the head of which is serrated, so that it may better grip the standard and hold the said lift-bar at any height desired. Pivoted to the standard by means of a bolt passing through the eye 0 is the handle or operating lever L connected by means of links M to an eye, N, in an extension of the frictionolutch O, surrounding the liftbar above the standard. The extension of the clutch is formed beyond the eye N into a handle, P. When in the lowered position,the foot of the lift-bar rests in a slot, R, in the base, or may extend to one side thereof The said foot has its free end extended below the base of the lift-bar,so that it may rest on the ground, the extremity being narrowed or beveled,so as to be inserted under an object relatively very low.

The operation of this device is very simple, the clutch lifting and the cam retaining the lift-bar in place while the clutch is being lowered to obtain a fresh hold. By holding the clutch by means of the handle P and disengaging the cam-lever by the foot the bar will quickly fall to its lowest position.

I claim 1. A lifting-jack consisting of a standard with a guide at its upper end, a lift-bar having a guide at its lower end, a clutch embracing said lift-bar, a lever connected thereto by links, and a cam-lever pivoted in the guide on the lower end of the said liftbar, substantially as specified.

2. A lifting-jack consisting of a standard with a guide at its upper end and a rearward project-ion, a liftbar with aguide atits lower end, a lever pivoted to said projection,a clutch on the lift-bar connected to the lever and having an extended handle, and a cam-lever with a serrated bearing-surface pivoted to the guide on the said lift-bar, substantially as specified.

In testimony whereof Iaffix my signature in presence of two witnesses.

JAMES IVEATHERS.

Witnesses: Y

W. B. ADKINSON, FLOYD FINK.

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