US1679028A - Polished rod clamp - Google Patents

Description

. C. E. GALLMAN POLISHED ROD CLAMP Filed May 11, 1926 Patented July 31, 1928.

UNITED STATES PATENT OFFICE.

CHARLES E. GALLMAN, 0F TULSA, OKLAHOMA, ASSIGNOR TO OIL WELL SUPPLYCOM- PANY, OF PITTSBURGH, PENNSYLVANIA,

A CORPORATION OF PENNSYLVANIA.

POLISHED ROD CLAMP.

Application filed May 11,

My invention relates to improvements in polished rod clamps designed for use in connection with pumping outfits for pumping oil wells. Clamps of this character are secured to the polished rod intermediate the walking beam and the stuffing-box usually employed in these outfits and are designed to engage and support the said rod when it is disconnected from the walking beam or at other times. I

Among the objects of my invention are; to provide a new and improved polished rod clamp having a plurality of polished rod receiving openings therein; a clamp of the character described made of two halves of such construction that when assembled the clamp will have two polished rod receiving openings extending through the clamp structure at right angles with each other; and a clamp having two polished rod receiving openings extending therethrough, one of the openings being of greater diameter than the other. In the accompanying drawing, which illustrates an application of my invention,

Figure 1, is an elevational View of the inner face of one of the membersconstituting the polished rod clamp;

Figure 2, an elevational view showing a portion of a walking beam and a part of an oil well pumping outfit with my improved polished rod clamp applied thereto; and

Figure 3, a top plan view of the clamp and showing the polished rod in section.

Referring to the drawings and as preferred, my improved polished rod clamp des ignated generally by the numeral 4, com prises two similar members 5 and 6; these members are preferably made from some suitable cast metal. Each member comprises a vertically extending semi-circular grooved portion entering into the formation of an opening 7, and a horizontally extending semi-circular grooved portion designed to form an opening 8; the grooved portions may be such as to form circular openings through the clamp of equal diameters or as shown by Figure 1, openings of unequal di ameters. In other words, when the two clamp portions 5 and 6, of the form shown by the drawing, are assembled to receive the polished rod 9, the structure will comprise two intersecting openings or bores extending through the clamp and disposed at right angles to each other, the bore or open- 1926. Serial No. 108,281.

ing 7 being of less diameter than the bore ing 7,

The purpose of forming the openings of different diameters is to enable a single clamp structure to be employed in connection with polished rods of different diameters.

The clamp members Sand 6, when assembled, are held in close relationship by means of horizontally extending bolts 10 and 11 arranged in pairs, said bolts being passed through registering openings 12 formed in the respective clamp members. 13 designate adjusting nuts disposed on the threaded ends of said bolts. It will be seen that the nuts of each pair of bolts are located on opposite sides of the clamp structure.

Clamps of this character, as above stated, are employed in pumping outfits for oil wells and in Figure 2, of the drawings I have shown diagrammatically a portion of a walking beam 15 to which the polished rod is secured. In this view, 16 designates an adjuster plate, 17 an adjuster T bolt,18 an elevator sub 19 an adjuster, and 20 a stuffing-box. It will be noted that the polished rod clamp is located between the walking beam and the stufling-box and that it is adapted to be lowered into contact with the stufiingbox, in this last mentioned position it supports the polished rod.

lVhat I claim is:

1. A polished rod clamp including two similar separable clamp members and having two polished rod receiving openings extending centrally therethrough, one opening beingdisposed at right angles with and biseating the other, and means for securing the clamp members together including two pairs of horizontally extending bolts passed through openings in the clamp members, each bolt having an adjusting nut thereon with the nuts of each pair located on opposite sides of the clamp. g

2. In a polished rod clamp, two similar separable clamp members each formed with centrally disposed semicircular bisecting grooves and. a plurality of bolt receiving openings, and two pairs of horizontally ex- In testimony whereof I aiiix my signature.

CHARLES E. GALLMAN.

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