US1071687A - Pipe-wrench. - Google Patents

Description

U. BEGKLIN. PIPE WRENCH. APPLIOATION FILED JULY 31,1912.

Patented Sept.'2, 1913.

K M um/who; Hu O. BecKlin,

OSCAR BEGKLIN, OF WEST DULUTH, MINNESOTA.

PIPE-WRENCH.

Specification of Letters Patent.

Application filed July 31, 1912.

Patented Sept. 2, 1913., Serial No. 712,597.

To all whom it may concern Be it known that I, OSCAR BEOKLIN, a citizen of the United States, residing at West Duluth, in the county of St. Louis, State of Minnesota, have invented certain new and useful Improvements in Pipe- Wrenches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in pipe wrenches and has for its primary object to provide a tool of this character which is simple in construction and positive in operation.

A further object of this invention is the provision of novel operating means whereby movement of the jaws toward and away from each other, for the purpose of gripping or releasing a pipe, may be readily effected.

With the above and other objects in view the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully described and-particularly pointed out in the appended claim.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters of reference denote corresponding parts in the several views, and in which Figure 1 is a side elevation of the wrench shown applied to a section of pipe, F ig. 2, an edge View thereof, Fig. 3, a sectional view on the line 3 3 of Fig. 1, and Fig. 4, a detail perspective view of the pivoted aw.

Referring to the drawings 10 represents the handle of the wrench, said handle being provided at one end with a slightly offset gripping jaw 11. Pivoted to the handle 10, and to the rear of the jaw 11, is a second and substantially S-shaped gripping jaw 12 which terminates at its rear end in a reduced portion 13 and a depending lug 14.

This Sshaped jaw is furthermore slightly enlarged, intermediate its ends, and formed with a longitudinal slot 15, said slot being adapted to receive the handle 10 and permit the ready movement of said jaw. The handle 10 is also slightly enlarged at a point to the rear of the S-shaped jaw 12 and provided with a longitudinal slot 16. Mounted in this slot 16 and held by the pivot pin 17 is a wheel 18, said wheel being provided with ratchet teeth 19 and provided on its face with an eccentric groove 20, said groove being adapted to receive for operation the depending lug 14 0f the Sshaped jaw 12.

Pivotally mounted at 17 on the handle 10 is an oscillating lever 21 the pivoted end of said lever being bifurcated to form arms 22, said arms being adapted to straddle the handle 10 and the ratchet wheel 18. Pivotally mounted between these arms and adapted for operative engagement with the ratchet teeth of the wheel 18 is a double pawl 23, connected by means of wires 24, to a pivoted handle 25 which is carried by the oscillating lever 21. It may now be readily seen that any movement of this handle 25, toward or away from the main handle 10 will throw the ends of the pawl 23 alternately into and out of engagement with the ratchet teeth on the wheel 18 and upon oscillation of the lever 21 permit the rotation of said wheel in either direction to effect through the medium of the eccentric groove 20 and the depending lug 14 of the Sshaped jaw12 a positive gripping or releasing of the pipe 26. It may also be added that because of its novel construction the S-shaped jaw 12 will be spaced away from the ratchet wheel 18 and any binding action between these parts, which might otherwise occur to decrease the efficiency of the wrench, will be thereby prevented.

hat is claimed is:

In a pipe wrench, a handle having a fixed jaw, a pivoted jaw provided with a lug, a shaft carried by the handle, a disk rotatably mounted on the shaft, and peripherally pro- Vided with ratchet teeth, an eccentric anpivoted jaw toward and away "from the 10 nular groove formed in one face of the disk fixed aw.

and receiving the lug of the pivoted jaw, In testimony whereof, I affix my signaa bifurcated handle straddling said disk ture,in presence of two witnesses. 5 and pivotally mounted on the above 1nen- OSCAR BFCKLIN tioned shaft and a pivoted dog centrally mounted in the lever and adapted to engage Vitnesses:

said ratchet teeth, whereby oscillation of E. G. KREIDLER, the lever will rotate said disk to move the AGNES EHR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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