US2600693A - Slidable side jaw wrench - Google Patents

Description

June 17, 1952 H. T. RUTHERFGRD SLIDABLE SIDE JAW WRENCH Filed Dec. 11, 1950 INVENTOR. Ha ry 7. fa r/1e rforcz afforngy 2 l O Q Patented June 17, 1952 UNITED STATES PATENT OFFICE SLIDABLE SIDE J AW WRENCH Harry T. Rutherford, Mount Washington, Md. Application December 11, 1950, Serial No. 200,265

1 Claim. 1

The present invention relates to wrenches and in particular to wrenches adapted to turnin pipe or other similar cylindrical stock or tubing.

One object of the invention is to provide a positive adjustable pipe wrench.

Another object of the invention is to provide a wrench of this type which can be better employed in close places.

Still another object of the invention is to provide a pipe wrench in which the working faces are always in parallel.

With these and other objects in view, the invention consists in its novel construction, combination and arrangement of parts, the principles of which are illustrated in the accompanying drawings and described in the following detailed description, in which:

Figure 1 is a side elevation of the wrench.

Figure 2 is a front elevation of the same.

Figure 3 is an enlarged fragmentary sectional view taken along line 3--3 of Figure 1.

Figure 4 is a fragmentary view similar to Figure 3 showing one of the jaw faces in operating position.

Figure 5 is an inverted plan View of the reciprocatory jaw member.

Figure 6 is a diagrammatic view showing the position of the jaw faces in gripping the cylindrical surface of the article.

Referring now to the drawings in detail, the wrench is of the slidable side jaw type, and probably better known in the trade as a orescent wrench. The wrench is provided with a jaw head 8 upon which is integrally formed a stationary jaw l0 having a working face Ill and a slidable or movable jaw i2. The slidable or movable jaw moves in a line substantially perpendicular to the face of the stationary jaw. On the opposite side of the jaw head 8 is a handle IS.

The slidable jaw I2 is provided with a reduced portion I2 which is carried in a slot M in the jaw head and is held in location by a worm screw i8, which is adapted to engage a gear rack 20 carried along the inner edge of the movable jaw portion [2.

The face I2 of the movable jaw I2 is formed at an angle, or taper of approximately 20 degrees to the face [0 of the stationary jaw.

The tapered face is preferably provided with a T slot 22 for receiving a reciprocatory jaw member 24. This reciprocatory jaw is provided with a portion 24' adapted to be slidably received into the T slot 22. The member 24 is held in position on the tapered face l2" by a pin 25, the

portion E l being cutaway at 24" to allow for a predetermined amount of reciprocating movement by the jaw face. Located between the inner portion of the slidable jaw I2 and the jaw 24 is a compression spring 28 having one end extending within a recess 38 in the slidable jaw and a recess 32 in the jaw face 24 for resiliently holding the member 24 outwardly against the pin 26. The member 24 is provided with a hole, or aperture '36 through which a punch may be extended to remove the pin from the jaw I2.

In Figure 6 is shown a diagrammatical sketch illustrating the operation of the wrench. The position of the stationary jaw is shown at 4|] and the position of the tapered jaw face, when in extended position, is shown at 42. The tapered jaw face will slide along the inclined surface 12" of the movable jaw I2 as indicated by the arrow, and by virtue of the incline surface of the movable jaw, the outer working surface 24 of the reciprocatory jaw face will move to the position as shown at 4'2. Therefore the face iii of the stationary jaw and the inner surface of the jaw face 24 are always parallel and grip the work at diametrically opposite points, or at degrees.

The principle employed in the present invention provides a wrench which is exceedingly positive in its action and is capable of being used in close places. The action is on the principle of a wedge in which the tapered jaw forms a wedge between the stationary and movable jaws and at the same time having the working surfaces of the jaws substantially in parallel planes at all times.

While the reciprocatory jaw face is shown mounted on the movable jaw, it may be mounted on the stationary jaw. The manner of mounting it would be substantially the same as shown for the movable jaw.

While a preferred form of the invention has been shown and described it is not intended to be a limitation as various forms of the invention may be resorted to without departing from the spirit thereof and the scope of the invention is best defined in the appending claim.

I claim:

A wrench comprising a jaw head having a stationary jaw and a movable jaw, the movable jaw having its face angularly disposed to the face of the stationary jaw and sloping outwardly from the stationary jaw in the direction of their outer ends, the jaw head having a channel through the lower portion thereof and a portion of the movable jaw formed in such a manner 3 as to be slidably receivable within said charm for maintaining and guiding the movable jaw in a line perpendicular to the face of the stationary jaw, gear teeth formed along the inner edge of the movable'jaw and a rotatable worm screw carried by the stationary jaw adapted to engage the said teeth for moving and securing the movable jaw in predetermined positions, a reciprocatory tapered jaw face having a reduced portion slidably receivable within a slot in the face of the movement of the tapered jaw face along the angular face of the movable jaw for a predetermined distance, the movable jaw face having an aperture opposite the said pin when in extended position for inserting a tool for removing the said pin and a handle extending outwardly from the back of the jaw head.

HARRY T, RUTHERFORD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 793,686 Sherkel 1- July 4, 1905 1,114,549 Stomberg Oct. 20, 1914 1,174,167 King Mar. '7, 1916 1,392,238 Stewart Sept. 27, 1921 1,502,900 Briles July 29, 1924 1,922,680 Hasty Aug. 15, 1933

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