US758499A - Wrench. - Google Patents

Description

PATBNTED APR. 26, 1904-.

. c. F. BEACH.

WRENCH.

APPLICATION FILED JULY 22. 1903.

N0 MODEL.

WITNESSES- UNITED STATES Eatented. April 26, 1904.

PATENT OFFICE.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 758,499, dated April 26, 1904. I

- Application filed Jul 22, 1903. Serial No. 166,511. (No model.)

To all whom it may concern:

Be it known that I, CARL F. BnAoH, a citizen of the United States, residing at Battlecreek, in the county of Calhoun and State of Michigan, haveinvented certain new and use- .ful Improvements in Wrenches,of which the following is a specification.

This lnvention relates to improvements 1n wrenches, and more particularly relates to when necessary to be removed, the same being done without the use of a thumb-nut,

latch, or other. fixture.

With these objects in view my invention consists in certain details of construction and combination of parts, as will be shownin the accompanying drawings and pointed out in claims;

In the drawings, Figure 1 represents a side view of my improved wrench with its jaws closed. Fig. 2 is a side view with a portion of the casing removed and shows the wrench fully extended, the pawl released, and the handle in position for releasing or changing the adjustment of its jaws. Fig. 3 is a side view with a portion of the casing removed and shows the position of the handle with its relation to the shank and pawl as applied to gripping a pipe or tube. Fig. 4 is a crosssection of the jaw on the line or of Fig. 1.

Like marks of reference refer to corresponding parts in the different views, in which a represents the stock; 6, the shank or handle; 0, the adjustable jaw; d, a pawl jointed to the shank; e, a spring actuated to bear against the shank, and f a casing encompassing the stock and within which the aforesaid assemblages of parts are operatively connected.

In the construction of the stock a the head 9, with its rearwardly-inclined sutures or strap of iron bent into a loop, and it forms a rectangular three-sided sheath, two of whose sides are disposed parallel and of equal length.

The sides of the casing are narrower toward its, free ends and are rounded, the top edges thereof slant slightly upward toward its rear extremity, and by preference its bottom edges angle downward toward itsrear extremity.

WVithin the fnee ends of the casing the lower jaw 0 is placed and held in position by a rivet is, passing through and connectively uniting the two sides of said casing.

The jaw 0 is T-shaped in cross-section and its top face is of a width equal to or exceeding the Width of the casing f and is provided with teeth Z, as is customary with pipewrenches, the under sides of its face and the points of its teeth being disposed parallel, the

rear edge of the jaw forming a smooth'Surface conforming to the front side of the stock.

0, against which it bears when in use.

WVithin the rear and curved portion of the casing f the handle or shank b .is pivotally connected; The handle is also'rectangular in cross-section at that portion where it fits the casing and is provided with a curved camshaped end m, secured within the casing by a rivet or bolt n.

At a point upon the face side and below the curved end m a rounded slot is provided, within which a corresponding extension 39 of the pawl cl is operatively connected.

Bearing against the back of the-handle and secured by a screw q within the casing f a spring 6 is located, the object 0f the spring being to keep the casing in a normal position with the handle.

The stock a having been properly inserted within the casing between the jaw c and handle b, a stud s is passed through that portion between its member 2' and protrudes sufficiently from either side to prevent the same from disengaging from the casing.

The operation of my improved wrench to those skilled in the art will have been apparent from the foregoing description. Grasping the stock member 2' with one hand,the operator takes the handle 6 in the other hand, and spreading the members, as shown in Fig. 2, the pawl d is released from the stock a. The wrench is now in position to be shifted as may be desired and can be easily and quickly done by either pulling the shank member a through the casing f until an object between its jaws will be closed upon or by holding said member 2 and pushing the handle 6 until the jaws meet upon an object, thence releasing the member 2' and forcing the handle in the direction indicated by the arrows. The outer extremity of the under jaw being disposed upward toward its rear end and the peculiar construction of the leverage between the handle and the shank adapts itself at once to an object between its. jaws without slipping, as is common in Wrenches using thumb-nuts, 'levers, &c.

While the construction herein described and illustrated in the accompanying drawings is the preferred form of the wrench, it is obvious that various changes in the form of the head and jaw and minor details might be made without departing from the spirit or sacrificing any of the advantages of my invention.

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

1. In a wrench, the combination with a head and stock, of upwardly-inclined teeth upon the rear edge of said stock and a terminating handle member, a pin passing through said stock between said handle member and the serrated portion, a sheath encompassing said stock, a jaw supported within the free ends of said sheath and together therewith adapted to slide on said stock and engage said head, a handle pivotally secured within the curve of said sheath, a spring secured within the curve of said sheath and adapted to bear against said handle, and means for locking said handle with said stock, for the purpose set forth and described.

2. In a wrench, the combination with a head and stock, of upwardly-inclined teeth upon the rear edge of said stock and a terminating handle member, a pin passing through said stock between said handle member and the serrated portion, a sheath encompassing said stock, a jaw supported within the free ends of said sheath and together therewith adapted to slide on said stock between said head and pin memv bers, a handle pivotally secured withinthe curve of said sheath, a spring secured within the curve of said sheath and adapted to bear against said handle, a pawl jointedly operative from said handle below the pivot thereof and adapted to engage the teeth of said stock, and means for disengaging said pawl for the purpose set forth and described.

3. In a wrench, the combination with a head and stock, of upwardly-inclined teeth upon the rear edge of said stock and a terminating handle member, a pin passing through said stock between said handle member and the serrated portion, a sheath encompassing said stock, a jaw supported within the free ends of said sheath and together therewith adapted to slide on said stock between said head and pin members, a handle pivotally secured within the curve of said sheath, a spring secured within the curve of said sheath and adapted to'bear against said handle, a pawl jointedly operative from said handle below the pivot thereof, the upper end of said handle, adapted to bear against the rear edge of said stock to adjust said pawl in its contact therewith, substantially as shown and for the purpose set forth and described.

4:. In a wrench, the combination with a head and stock, of upwardly-inclined teeth upon the rear edge of said stock and a terminating tapering handle member, a pin disposed between said handle member and the teeth portion, a sheath encompassing said stock and adapted to play between said head and pin, said sheath comprising a strap with tapering round ed ends bent to form a loop with a rectangular curve, the upper edges of the open members being in the same plane and disposed downwardly from the curved portion, a jaw comprising diametrically-opposed flanges adapted to rest upon said sheath and a centrally disposed shank supported between the free ends thereof, said jaw together with said sheath adapted to slide upon said stock and engage with said head, a handle pivotally secured within the curve of said sheath, a spring secured within the curve of said sheath and bearing against said handle, a pawl jointedly operative below the pivot of said handle and adapted to engage the teeth of said stock, and means for looking or unlocking said pawl, substantially as shown, and for the purpose set forth and described.

CARL F. BEACH.

Witnesses E. EAVES, B. L. PARSONS.

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