US758568A - Wrench. - Google Patents

Description

PATENTED APR.26,1904. W. E. ,SNBDIKER.

. WRENCH. APPLICATION FILED MAYER, 1903.

N0 MODEL.

Tove/@2507" A By lw'S flliorloeg UNITED STATES Patented April 26, 1904.

PATENT OFFICE.

- WlLLIAM E. SNEDIKER, OF CAMDEN, NEW JERSEY.

WRENCH...

SPECIFICATION formingpart of Letters Patent No. 758,568, dated April 26, 1904.

Application filed MayZQ, 1903. Serial No. 159,283. (No model.) j v I T at whom it may concern:

Be it known that I, WILLIAM E. SNEDIKER a citizen of the United States, residing at Camden, in the county of Camden and State of New Jersey, have invented certain new and useful Improvements in Vl renches, of which the following is a specification.

My invention relates to improvements in quick-adjusting wrenches, and particularly to wrenches in which is used a toggle-pawl ,between the. fixed and movable jaws.

The object of my inventionis to simplify the constructionof a wrench by reducing the number of parts and to form said parts in such a manner that they may be quickly assembled.

A still further object of myinvention is to construct the fixed head of the wrench so that the toggle-pawl may be held in position without a pivot-pin, which tends to weaken the parts.

' A still further object of invention is to make the fixed headin one piece with the handle and so formingsaid head that the movable jaw will be fulcr'umed in said head instead of having the head pivoted to the handle, as has been done heretofore.

Referring to the drawings, Figure 1 is a longitudinal sectional view of a wrench, showing my invention embodied therein. Fig. 2 is a view similar to Fig. 1, showing the parts in a difi'erent position, as when clamping an object. Fig. 3 is a sectional view of the head of the wrench, sh0'wing the parts detached. Fig. 4 is a sectional View, as on line 4 4, Fig. 1. Fig. 5 is a sectional View, as on line 5 5, Fig. 3. j

In the drawings, A represents the handle, having at one end a head "B formed thereon, said head being made in one piece with said handle. 1

C represents a sliding bar carrying the movable jaw C, in which is provided the teeth G which latter are adjacent to teeth B in the fixed jaw B secured in the head B. The said sliding bar O is T shape in cross-section, having the projecting portions 0 and C as shown in Fig. 4. Said projections are strengthened by fillets C where they join the head O.

In the head B is formed an aperture B as and 4.)

' Grooves B are provided for the projections C and C of the sliding bar C. Said sliding bar rests on the shoulders B and it is fulcrumed at the point B so that the head of the wrench and said sliding bar may take the positions shown in Fig. 2, when sufficient force is placed on the handle A to force the teeth of the jaws into theobject to be acted 5 upon, so that said teeth will not slip on said object.

In the head of the wrench is formed a recess or socket B. (Clearly shown in Figs. 3 In this socket fits'the head D of the toggle-pawl D, which simply rests in said socket and .is held in position by the end of of the toggle-pawl. Teeth D are provided on the upper surface. of said toggle-pawl, which engage teeth C in the lower. surface of the sliding bar C. The spring [2' holds said toggle pawl up against said sliding bar.

The toggle-pawl D is held up with'suflicient force to slightly raise the inner end of the sliding bar up ofi the shoulders B, so that the upper surface of said sliding bar will contact with the spring 6 It .will thus be seen that by the action of the two springs 6 and the teeth D and C will remain in engagement. When the handle D of the togglepawl is depressed, the sliding bar C will rest on the shoulders B and slide free of the toggle-pawl and also free of the action of the spring 6 as the end of the spring b is held by shoulders B", so that it cannot follow the top of the sliding bar and bind the same. Said spring 6 will yield sufliciently to allow the sliding bar and the head B to take the position shown in Fig. 2.

The fulcrum B upon which the sliding bar C moves, is formed as closely as possible to the center of the socket B in which the head of the toggle-pawl rests. This construction will allow the fixed head and sliding bar to move in relation to each other without changing the distance between the head of the toggle-pawl and the sliding bar, the result being to keep the teeth of the toggle-pawl in perfect engagement with the teeth in the sliding bar.

The grooves B are narrow at the fulcrumthe spring 6 contacting with the shoulder d point B and wider at the outer ends, so that the sliding bar C may rock on said fulcrumpoint. The shoulders forming the grooves B do not bind the projections C and (1* of the sliding bar at the inner end when the jaws of the wrench are in action. The entire strain comes on the toggle-pawl and the fulcrum B. By this arrangement of the parts the necessity of having the head of the wrench pivoted to the handle is avoided.

A pin C is placed in the end of the sliding bar to keep the sliding bar from dropping through the head of the wrench when the toggle-pawl is depressed. When it is desired to take the wrench apart, said pin is removed and the sliding bar withdrawn from the head. By raising the handle D of the toggle-pawl the spring I) will disengage the shoulder (Z on the toggle-pawl, and the said toggle-pawl may be withdrawn from the socket B 7 Having thus described my invention, I claim and desire to secure by LettersPatent 1. In a wrench the combination of a fixed head, a movable head, a sliding bar carrying said movable head, a projection on either side of said sliding bar, shoulders formed on the interior of the fixed head, said shoulders forming a fulcrum and guides for said sliding bar, and a toggle-pawl acting between said fixed head and said sliding bar substantially as described.

2. In a Wrench the combination of a fixed head, a sliding bar carrying the movable head, shoulders formed in said fixed head adapted to engage projections on either side of said sliding bar, a spring to hold said sliding bar down on said shoulders, a toggle-pawl, and a spring adapted to hold said toggle-pawl in engagement with said sliding bar, substantially as described.

3. In a wrench the combination of a fixed head, a movable head, a sliding bar carrying said movable head, projections on either side of said sliding bar, shoulders in the fixed head to receive said projections, a spring to act upon the upper surface of said sliding bar, shoulders formed in said fixed head to limit the movement of said spring, a toggle-pawl carried by said fixed head, and a spring adapted to hold said toggle-pawl in engagement with said sliding bar, substantially as described.

4. In a wrench the combination of a fixed head, a movable head, a sliding bar carrying said movable head, a projection on either side of said sliding bar, shoulders formed on the interior of the fixed head, said shoulders forming a fulcrum and guides for said sliding bar,

a toggle-pawl pivoted in said fixed head ad,

jacent to said fulcrum so that said sliding bar can rock on said fulcrum without changing the relation between the toggle-pawl and the sliding bar, substantially as described.

5. In a wrench the combination of a fixed head, a movable head, a sliding bar carrying said movable head, a projection on either side of said sliding bar, shoulders formed on the interior of the fixed head, said shoulders forming a fulcrum and guides for said sliding bar, and a toggle-pawl having a shoulder engaged by a spring in the fixed head, said spring 7 adapted to hold said toggle-pawl in position and also to keep the same in engagement with said sliding bar, substantially as described.

In testimony whereof I afiiix my signature in presence of two witnesses.

WILLIAM E. SNEDIKER.

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