US1718719A - Oil-well tongs or wrench - Google Patents

Description

June J. 5. TURNER 15 118.719

OIL WELL TONGS OR WRENCH Original Filed Dec. 12. 1922 Patented June 25, 1929 UNITED STATES 1,718,719 PATENT OFFICE.

JAMES SCOTT TURNER, OF QXNAB-D, CALIFORNIA, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO BYRON JACKSON PUMP COMPANY, OF

A CORPORATION or DELAWARE.

WEST BERKELEY, CALIFORNIA,

OIL-WELL TONGS OR WRENCH.

Application filed December 12, 1522, Serial No, 606,442. Renewed April 30, 1929.

This invention relates tooil-well apparatus I and particularly to tongs 'or wrenches. The invention has for an object the provision of,

, in claims.-

In the drawing:

Fig. 1 is a fragmentary perspective View of a tongs or wrench shown inoperative relation with casing or tubing;

Fig. 2 is a fragmentary view, certain parts being sectioned, of a tongs or wrench with the jaw parts thereof open for reception of work; and

lFig. 3 is a view similar to Fig. 2, but showing the jaws closed about the work.

Corresponding parts in all the figures are designated by the same reference characters.

Referring to the drawing, A designates the improved tongs or wrench, of which a, is the operating member or handle, and b and c j aw. members for engaging the work d. The jaw member 0 is provided with a furcated shank 1 and the operating member a is received between the fur'cations of the shank and held in hinged relation theretoby means of a suitable pin 2 passing through the furcations and the operating member a. The jaw member 5 is held in hinged relation to the shank 1 and within the furcations by means of a suitable pin 3 passing through said furcations and the jaw. The operating member a is provided with a bearing nose 4: adapted to cooperate with a nose .5 carried by the jaw b.

Yielding means 6 is associated with the operating member a and with the jaw c, said yielding means constituting a contractile spring held at one end by a suitable pin 7 to the jaw c and at the other end by a suitable pin 8 to the operating member a. The operating bearing pin or member a likewise carries a member 9 which may contact with a portion of the nose 5 during certain movements of the operating member. The jaw I) may be provided with an inset 10 for enhancing-grip of said jaw upon the work cl, if desired; and in addition, the jaw member I) may be provided with a projecting handle 11 to aid in opening the jaws.

In Fig. 1 the usual support e is provided for holding the tongs.

The operation'of the device is as follows: The tongs or wrench may be caused to engage the work Q? by grasping the handle 11 associated with the jaw 12 and swinging the jaws apart. This position is illustrated in Fig. 2, and it will be noted that the operating member a will be moved when the jaw b is relatively moved with relation to the jaw c, the movement thereof being resisted by the contractile or yielding means 6. Furthermore, a movement of the operating member a will cause the part 9 to engage an edge of the nose 5 of the jaw 12 and tend to swing said jaw about its hinged center 3. When the jaws b and 0 engage the work the inset 10 of the jaw b will tend to prevent slippage during movement of thewrench, and likewise an inset 12 carried by the jaw 0 may further enhance the grip ofthe jaws upon the work.

In Fig. 3 the jaws engage the work 03 and a movement of the operating member a in the directionof the arrow will cause the'noses 4 and 5 to interlock and prevent spreading of the jaw members; in fact, the more resistance encountered by the jaws in the moving of the work or tending to unscrew or screw the tubing or casing, will cause the nose portions'of the operating member a. and the jaw 12 to tightly engage and therefore cause the jaw members I) and c to engage the work. When movement has been secured in the work in one direction and it is desired to further turn the work in the same direction, movement of the operating member in an opposite direction will free the jaws from the work so that the insets 10 and 12 will notbite into the work, but

will slide over the periphery thereof. This the two jaws b and 0 when the jaws are in work-engaging relation, the parts interlocking.

particular showing, but that said changes may be made within a fair interpretation of the invention as set forth and defined by the appended claims.

Having thus disclosed my invention, I claim and desire to secure by Letters Patent:

1. In oil-Well tongs, the combination of an operating member adapted to be suspended from a support, a relatively fixed jaw pivoted to the said member, a contractile spring normally holding the relatively fixed jaw and said operating member in alinement, spaced bearing projections carried by the operating member, an'actuator jaw pivoted to the relatively.

fixed 'aW and havin a nose arran ed between said spaced bearing pro'ections, and a handgrasping part carried y the actuator jaw whereby manual manipulation of the movable jaw to open the the same will cause said operating member to move relative to the fixed aw.

2. A wrench of the class described, including a relatively fixed jaw member, a movable actuator jaw pivoted on the latter adjacent the inner end of the work gripping portion thereof, a nose projection formed on the movable jaw in a direction opposite the work-engaging portion thereof a handle by which the wrench is adapted to be supported pivoted to the shank portion of the fixed jaw and provided with a bearing nose portion engaging at the inner side of the projecting nose of the movable jaw, a bearing pin carried by the handle and spaced from the nose thereon to receive the nose of the movable jaw, and a contractile spring connecting the handle and fixed jaw and tending to normally bring them into alinement.

In testimony whereof, I have signed my name to this specification.

JAMES soorr TURNER.

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