US2926891A - Mechanical stabber for rod or tubing pulling units - Google Patents

Description

March 1, 1960 l. E. HOL-r MECHANICAL STABBER FOR Roc 0R TUBING PULLING UNITS Filed May 4, 195e 2 Sheets-Sheet l Inventor /van E. Holt March 1, 1960 l. E. HOL-r 2,926,891

MECHANICAL STABBER FOR Ron 0R TUBING PULIING UNITS Filed may 4, 195e 2 Sheets-Sheet 2 In ventor l Attorneys United States Patent O 2,926,891 MECHANICAL STABBER Fon Rol) on rUmG PULLING UNITS Ivan E. Holt, Russell, Kans.

Application May 4, 1956, Serial No. '582,687

2 Claims. (Cl. Z55-35) The present invention relates to a new and useful improvement in oil well equipment and more particularly to a mechanical stabber for the pulling unit of an oil well rod or tubing to function as a brace or prop to support the rod or tubing in a true perpendicular position while sections of the rod or tubing are being connected together or disconnected from each other.

`An important object of the present invention is to provide means for pivotally mounting the rod or tubing stabber for vertical swinging movement on the gin pole or mast of an oil well together with rod or tubing gripping jaws at the outer ends of the stabber and operated for opening or closing movement by the raising or lowering of the stabber.

A further object of the invention is to provide a device of this character of simple and practical construction, which is eflicient and reliable in operation, relatively inexpensive to manufacture and install in operative position on the oil well mast and which otherwise is well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a side elevational view showing the stabber in operative position on the gin pole or mast of an oil well.

Figure 2 is a top plan view with the stabber removed from the mast.

Figure 3 is a side elevational view thereof.

Figure 4 is a detail of the outer end of the stabber showing the rod or tubing gripping jaws in closed position.

Figure 5 is a detail of one of the jaws.

Figure 6 is a detail of the blade on which the jaws are pivotally mounted and against which the rod or tubing is held by the jaws and Figure 7 is a detail of the connector for the inner ends of the jaws.

Referring now to the drawings in detail wherein for the purposes of illustration, I have disclosed a preferred embodiment of the invention. The numeral 5 designates the frame generally of the stabber and which is composed of a pair of spaced parallel frame members 6 connected at an intermediate portion by a brace or transverse frame member 7, the frame members converging at their outer ends beyond the brace 7 as shown at 8 and are connected to each other at their outer ends by means of a plate 9 having an inwardly curved outer edge 10 and adapted to abut the rod or tubing 11 while the latter is being lifted from or lowered into a well.

The frame members 6 are connected to each other adjacent their inner ends by means of a transverse rod 12, the frame members 6 and the rod 12 having slots 13 and 14, respectively, arranged in crossed relation and through which bolt and wing nuts are inserted for adjusting the frame outwardly on the transverse rod 12 or rice , 2 longitudinally on said rod whereby to center the rod or tubing 11 with respect to the outer edgeof the plate 9.

The rod 12 is secured on the gin pole or mast 16 `of the conventional oil well construction by means of clamping members 17 secured to the gin pole or mast, the rod 12 being embraced by a ring 18 pivotally mounted to the clamping members 17 by a conventional form of pivot orhinge structure 19 for vertical swinging movement of the outer end of the frame 5.

The outer end of the frame 5 is raised or lowered by means of a rope or cable 20 attached to the brace 7 by means of an eye 21, the cable extending upwardly over a pulley 22 journaled on the mast 6 and the extending downwardly for the manual operation of the lower end of the cable. Y

A pair of rod or tubing gripping jaws 23 are formed with arcuate inner ends 24 pivoted tothe plate 5 as shown at 25, the inner ends of the jaws curving inwardly and are pivotally connected to a connector plate 26 by means of pins or the like 27.

The plate 9 is formed with a slot 28 for slidably receiving a pin 29 carried by the connector 26 whereby an inward or outward movement of the connector 26 will serve to open or close the outer ends of 'the jaws 23 for clamping the rod or tubing 11 against the curved outer edge of the plate 9 in the manner as shown in Figure 4 of the drawing.

A rope or cable 30 suitably attached at one end to the connector 26 extends from the connector 26 inwardly of the frame 5 through the eye 21 and then downwardly for attaching at its other ends to the mast 16 by an eye 31.

An arm 32 projects horizontally outwardly from each of the jaws 23 and to the outer end of which a coil spring 33 is attached and extends inwardly for attaching to one of the frame members 6.

In the operation of the device the frame 5 is clamped to the gin pole or mast 16 as shown in Figure l in a proper position to move the plate 9 at the outer end of the frame into and out of engagement with a rod or tubing 11 to brace the same in a perpendicular position against swinging movement while the rod or tubing is being connected or disconnected.

The outer end of the frame Sis raised or lowered by the rope or cable 20 and as the frame is lowered the rope or cable 30 slackens to permit the springs 33 to open the jaws 23 and receive the rod or tubing 11. When the frame 5 is raised the rope 30 tightens `and exerts a pulling force on the connector plate 26 whereby to close the jaws about the rod or tubing.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the construction, operation and advantages of the device will be quite apparent to those skilled in the art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope o'f the appended claims.

I claim:

l. A rod or tubing stabber for oil wells having an upright, said stabber comprising a frame, means on one end of said frame adapted to pivotally connect said frame to said upright for pivotal movement about a substantially horizontal axis, a pair of gripping jaws pivotally secured to the other end of said frame for closing to grip a rod or tubing section, means for effecting pivotal movement of said frame about said axis, a flexible pull mem ber having one end connected to said jaws to' close the latter in response to pull on the other end of said mem' References Cited in the le of'this patent UNTED STATES PATENTS Wilbur June 16, Ruppert Nov. 25, Bergsten June 2, Murphy et a1 Oct. 24, Cosso'r v Dec. 5, Moise "rn- T.. fmt-f --U Dect 19| Rowland Y Aug. 1'3, Bolling Oct. 19, Chesick Dec. 7,

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