US667468A - Wagon-jack. - Google Patents

Description

Patented Feb. 5, l90l.

6. .1 SHIRREFF.

. WAGON JACK.

4 lAppl'xcaticn filed Nov. 13, 1899.!

2 Sheets-Sheet 2.

(No Model.)

UNITED STATES PATENT EFrcE.

CHARLES JAMES SHIRREFF, OF BROOKVILLE, CANADA.

WAGON-JAG K.

SPECIFICATION forming part of Letters Patent No; 667, 68, dated F a y 5, 1901 Application filed November 13, 1899. Serial No. 736,855. (No model.)

To all whom it may concern:

Be it known that I, CHARLES JAMES SHIR- REFF, a subject of the Queen of Great Britain, residing at Brockville, in the county of Leeds, in the Province of Ontario, in the Dominion of Canada, have invented a new and useful Wagon-Jack, of which the following is a specification.

My invention relates to a lever lifting-jack for raising wagons, carriages, &c., and has for its object to frictionally hold the lift bar or shaft step by step or automatically while operatin g the lever.

My invention consists of two gripping eyes or rings through which the vertically-operating lift-bar passes, and said eyes are rounded on the gripping-surface to insure the grip. The lifting-eye is hinged to the operating hand-lever, and the check eye or ring has an elbow projection which stands on a bracket at the top of the pipe-standard in which the lift-bar telescopes, said projection causing the eye to assume of itself an inclined position to grip the lift-bar by the downward pressure or gravity of said bar to hold the axle of the wagon at its elevated position, so that at every downstroke of the free end of the lever the upper or lifting ring or eye, which is connected thereto by a hinge-joint, raises the lift-bar, which afterward becomes disengaged on the upstroke of the lever. On the upstroke of the lever the check-eye will frictionally grip the lift-bar by reason of its gravity or pressure downward and hold the lift-bar from falling until the operation is repeated. The lift-bar is fully released by slightly depressing the free end of the lever to take 06 the pressure and then removing the elbow of the checkeye from the bracket to cause the check-eye to change from an inclined to a horizontal position and lie flatly and loosely upon the bracket, thereby permitting the lift-bar to slide freely through the check-eye when the grip of the lift-eye is released by raising the free end of the lever until both eyes meet, the impact releasing the lift-eye of its grip. The lift-bar will then fall by its own Weight automatically.

Figure l is an elevation of my improved wagon-jack in the raised position as in use. Fig. 2 is a top view or plan of the same. Fig.

3 is a perspective view of the lifting ring oi eye detached from the lever to show its shape. Fig. 4 is a perspective view of the check eye or ring detached from the lift bar or shaft. Fig. 5 is a perspective view of the top of the standard, the lift-shaft being removed to clearly show the bracket-bearing for the check ring or eye; and Fig. 6 is an elevation of the wagonjack in the lowered position as not in use. i

A is a pipe-standard provided with a base A to stand on the ground, and said pipestandard at the top is surrounded integrally by a bracket A having a lug A B is the lift-bar, vertical in operation and telescoping within said pipe-standard, and at top said bar is provided with the usual restblock B to bear the axle, &c., to be raised, and said block has a leather cap B at the top.

0 is a hand-lever, which is pivotally connected to lug A by a fulcrum-link D.

E is a gripping lift ring or eye having a bifurcated stud which receives the end of the lever and is connected thereto by a pintle. The interior of the eye or the face which comes in contact with the bar is rounded to insure a tight frictional grip on the bar B, which enters the eye.

F is a gripping check ringor eye having an elbow extension or lug F, and through said eye F the lift-bar B passes. eye or ring F assumes an inclined position by placing the lug to bear upon the bracket A as shown in Fig. 1, the eye will thereby be elevated off the bracket and rest against the lift-bar, whereby the eye will frictionally grip the lift-bar B and hold it from falling during the time the free end of the lever is raised to obtain a successive grip of the eye E upon the lift-bar B, so that the operation of the lever will raise the lift-bar audits load step by step, and by releasing the check-eye as aforesaid the lift-bar B will fall by its own gravity or imposed weight.

I claim as my invention A wagon-jack, comprising a pipe-standard A, having a bracket A at top, a lift-bar B, telescoping into said standard, a lever C, fulcrumed to said bracket by a link D, a lift gripping-eye E, hinged to the shorter end of said lever, and a check gripping-eye F, having an elbow F, adapted to stand displaceable on When the check.

if, eewies' said bracket, said lift-bar passing through the lift-bar slides in both eyes, by gravity,

both eyes, whereby the check-eye F, will inafter use.

cline downwardly against said bar and the In testimony whereof I have signed my eyes alternately grip the bar when the lever name to this specification in the presence of 5 is operated, and when said elbow is displaced, two subscribing witnesses.

its eye will lie on said bracket, and being loose,

the lift-bar slides freely in it, and when the CHARLES JAMES SHIRREFB' lift-eye is brought into contact with the check- Witnesses: eye by raising the free end of the lever, the HENRY T. H. MARSDEN,

1o impact releases the grip of the lift-eye, and W. H. CHAPMAN;

Images