US94710A - Improvement in wrench - Google Patents

Description

@attent @Win12,

LUKE CHAPMAN, OF COLLINSVILLE. CONNECTICUT, ASSIG-NOR TO THE COLLINS COMPANY, OF SAME PLACE.

Letters Patent No. 94,710, dated September14, 1869.

IMPROVEMENT IN WRENCH.

The Schedule referred to in these Letters Patent and making part of the lame.

To dll whom it 'may concern:

Be it known that I, LUKE CHAPMAN, of Collinsville, in the county of 'Ha1'tf0rd, and State of Connecticut, have invented a new and useful Improvement in Wrenches; and I declare the following to be a full and exact description thereof', reference being had to the accompanying drawings, and to the letters of reference marked thereon, forming a part of this specification.

My improvement relates to that description of wrenches popularly called monkey-wrenches.

In the drawings- Figure 1 is a side view 4of my improved wrench.

Figure 2 is a sectional view of my improved wrench, the front of the wrench being toward the observer.

Like letters indicate like parts in all the gures.

From Ithe nature of my improvement, it is only applicable, for good service, to wrenches made of caststeelor of wrought-iron. Malleable iron and castiron could be adopted, but without durability, and at great loss to manufacturer and consumer.

The letter a designates the head of the wrench, made of one piece, with the barb, in the usual manner, which is fastened to the handle cby a nut at the lower end.

e is the movable jaw, sliding, as is usual, upon the bar b.

g is the nut, interiorly threaded and running upon the thread out upon the front side of the wrench-bar,

as seen in the drawings.

It will be observed that the lower part'of the movable jaw e runs down upon the two at sides of the bar, through the nut g, and terminates upon each side in the shoulder e.

Conceding thatA the parts are in this position, it will be readily understood that as the nut g is rotated, so the movable jaw will be moved up or down, as -desired.

Now .to explain how the parts are got into this position. While c and g are still separate from the rest of the wrench, the slender parts of e, terminating in the shoulders e', are pinched together and shoved through the nut g, and the natural spring of the parts (remembering that the materialissteel or wroughtiron) will pressthe shoulders e e out against the nut. Now the movable jaw, the nut g being'on it, is pushed on over the lower end of the bar b, the handle c is then secured on, and all the parts are then inthe position shown in the drawings.

I claim,as my invention- 'lhe movable jaw e, provided with the parts c e', in combination with the bar b and nut g, when constructed as described, for the purpose set forth.

Dated June 19, 1869.

IKE CHAPMAN.

Witnesses:

CHAs. BLAIR, JOSHUA S. HEATH.

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