US763427A - Pipe and nut wrench. - Google Patents

Description

8|. TOOLS,

Wrenches, Pivoted Outer Jaw,

Drafisman.

'---1 nan-4 a Fixed Fulcrum,Tz-zr-z-eling daw, Rocking Sleevc,8pring Pressed i 1 BEST AVALABLE Q ATENTED JUNE 28, 1904.

J. RUMERY.

PIPE AND NUT WRENCH. 7 APPLICATION FILED AUG. 12, 1903.

N0 MODEL.

ATIEST a %/ENTUI? 044M Gay M WW I'IY the operating parts.

BES

UNITED STATES JOHN RUMERY, OF CLEVELAND, OHIO.

PIPE AND NUT WRENCH.

SPECIFICATION forming part of Letters Patent No. 763,427, dated June 28, 1904.

Application filed August :12, 1903.

1'0 (all w/w'rrz, it rim/y concern:

Be it known that 1, JOHN RUMERY, a citizen of the United States, residing at Cleveland, in the county of Ouyahoga and State of Ohio, haveinvented certain new and useful Improvements in Pipe and Nut renches; and I do declare that the following is a full, clear, and exactdescription of the invention, which will en able others skilled in the art to which it appertains to make and use the same.

My invention relates to pipe and nut wrenches; and the object of the invention is to provide a wrench which has especial convenienccs for adjustment and operation,which is simple in construction and easily repaired, and which requires no rivets to fasten parts permanently together.

In the accompanyingdrawings, Figure 1 is a plan view of my new and improved wrench. Fig. 2 is an enlarged elevation thereof, but with the rear side plate removed,so as to show Fig. 3 is a view taken on line :12 m, Fig. 2. Fig. 4 shows a detail of a compound spring for the pair of dogs which fix the position of the movable jaw, and Fig. 5 is a detail of one of the spring-supporting pins.

This wrench is constructed to give the movable jaw its full range of adjustment back and forth with the speed of a hand movement practically by simply releasing the dogs; but the construction is such that when an adjustment has been made the grip of the jaws is fixed and immovable, and all the parts are built for strength and endurance. To these ends the wrench comprises the two primary members or parts A and B. Part A is a straight handle part having a head a with an inserratcd or corrugated jaw C, preferably secured by screws, so as to be removable when worn or broken, and the face of said jaw straight and flat, though it might be curved or concave, if desired. Jaw member B has a plain straight shank and a jaw I) at right angles thereto, which likewise is serrated, toothed, or corrugated to cooperate with jaw Oand comes directly opposite said jaw, on the outside thereof and overhanging the same from above, as seen in Fig. 2. The shank of jaw B has a series of teeth or serrations 2 Serial No. 169,239. (No model.)

along its top edge or surface, extending entirely across the shank, as here shown, and adapted to be engaged from either direction by pawls or dogs D and E. These dogs are mounted on and between opposite side plates G, which are made exactly alike and interchangeable and are pivotally mounted on the sides of head a of the wrench-handle part A by means of a pivot screw or shaft H.

The head a is built to stand above the plane of the handle, somewhat as shown, so as to afford a raised pivot for the side plates and room for the jaw member B to tilt. In operation it is desirable to tilt the upper or outer jaw more or less, especially in making engagement with a pipe when an adjustment has been made to the pipe, and this tilting of the jaw is easily accomplished by simply depressing the rear end of the jaw member B by hearing thereon with the thumb while the hand grasps the shank of handle A, and all this can easily be done with one hand.

Normally spring L serves to hold jaw B in working relation, as shown, and this spring is confined at its reverscly-bent end in a rounded cavity in head a of the main jaw or in some equivalent way. The present construction, however, enables me to engage the spring without rivet or other special means, as it is bent to form a head, and the cavity in which the head is engaged is narrowest at its outer portion, so that the spring cannot be drawn directly out, but can only be removed sidewise, as it is put in. It is also confined to the side plates so that it cannot be removed at all except one of these plates be removed.

The dogs D and E are alike and interchangeable and pivoted on screws or pins (Z, engaged at their ends in side plates (Jr. Both dogs are engaged all the time, except when raised for adjusting jaw B; but they look said dog in opposite directions, and the said jaw rests down upon head a and cross-bolt 4, connecting plates G;

Springs S are preferably formed up from a piece of sheet-steel, and the body portion of said springs is secured between the side plates G by means of short pins or shafts N, having annular channels with shoulders engaging the ends of said body and secured at their extremities in said side plates; but it will be seen that here also the spring is a single detachable part which is indirectly fixed in place and without rivets or the like, and its extremities cross and engage beneath the stems of the opposite dogs D and E, respectively.

Pins 5 on body A at each side, or a single pin projecting through said body, serve as stops for the backward tilt of the plates G, and a removable stop lugor projection 6 on the side of jawBserves to limit its opening movement and beyond which it cannot be carried,

All the parts are made of such strength that they will withstand all strain coming upon them in whatever use the wrench may be employed.

i/Vhat I claim is- 1. The handle member of the wrench having a jaw at its end and side plates removably supported on said member, in combination with a second jaw member having a right-angled extremity and teeth along its back portion and supported within said plates, a pair of oppositely-set dogs to engage said teeth, and a spring bearing against the bottom of said second member, substantially as described.

2. The handle member of the wrench provided with a head having a raised portion extending above the plane of the handle on said member, and detachable side pieces pivotally engaged on said raised portion of the head, in combination with a second jaw member' slidable back and forth between said side BEST AVAILABLE COP.

pieces, a spring having a reversely-bent end locked in said head and bearing against the bottom of said second member, and oppositely-set dogs engaging the upper edge of said second member, substantially as described.

3. The handle member having-a head with serrated jaw, side plates pivotally supported on said head and adapted to swing in the plane of the sides of the handle, a second substantially right-angled jaw member supported between said plates and provided with oppositely-set teeth along its outer edge opposite said serrated jaw, and spring-pressed dogs pivotally supported between the said plates and set to work in opposite directions on said teeth,

substantially as described.

4.. The handle member of the wrench having aserrated face on its extremity, a pair of side plates pivotally and detachably engaged with the head of said member, a second jaw member engaged between said plates and hav ing a right-angled jaw portion opposite the jaw of the handle member, a spring-support engaged in the head of the said handle member and bearing against, the bottom of the second member, and a pair of spring-pressed dogs between said plates in engagement with the upper edge of the said second member, substantially as described.

In testimony whereof I sign this specification in the presence of two witnesses.

JOHN RUMERY.

W'itnesses:

PETER. DREIER, R. B. Mosnn.

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