US794945A - Wrench-jack for oil-well tubes. - Google Patents

Description

PATENTED JULY 18, 1905? 3.0. MILLER. WRENCH JACK FOR OIL WELL TUBES.

APPLYIOATIQN FILED NOV. 2, 1904.

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UNITED STATES Patented July 18, 1905.

PATENT OFFICE.

WRENCH-JACK FOR OIL-WELL TUBES.

SPECIFICATION forming part of Letters Patent No. 794,945, dated July 18, 1905.

Application filed November 2, 1904. Serial No. 231,152.

To (all whmn it may concern.-

Be it known that I, EDWIN O. MILLER, a citizen of the United States, residing at Humboldt, in the county of Allen and State of Kansas, have invented a new and useful VVrench- Jack for Oil-VVell Tubes, of which the following is a specification.

This invention relates to a wrench for coupling and uncoupling the sections of a drillrod for well boring or drilling apparatus, and has for its object to provide an inexpensive, durable, and efficient wrench of this character by means of which the several sections of rod may be expeditiously coupled or uncou pled with comparatively slight exertion on the part of the operator.

A further object of the invention is to form the track or rack bar of a plurality of pivoted sections, so that the carriage carrying the movable wrench will automatically adjust itself to the varying distance between said track and the rod-sections to be coupled or uncoupled and also permit the sections of track to be conveniently packed for transpor tation or shipment.

A still further object is to provide a brace which extends from the pivot-pin of the tracksections to the drill-rod, thereby forming a rigid connection between the rod and the track and effectually preventing accidental displacement of the latter.

The invention consists in the construction and novel' combination of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended, it being understood that various changes in form,proportion,and minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

In the accompanying drawings, forming a part of this specification, Figure 1 is a perspective view of a drill-rod wrench constructed in accordance with my invention. Fig. 2 is an enlarged detail sectional view of the pivoted track-sections. Fig. 3 is a side elevation, partly in section, of the clamp holding the stationary wrench. Fig. 4 is a similar view of the movable carriage.

Similar numerals of reference indicate corresponding parts in all the figures of the drawings.

The drill-rod is designated by the numeral 5 and the joint at 6, said joint consisting of an internally-threaded concave socket on one section of the drill-rod and a similarly-shaped threaded projection on the other, the drill-rod sections or members being squared, as indicated at 7, on both sides of the joint to adapt the wrenches 8 and 9 to be fitted around said squared portions of the drill rods. The wrenches are each provided with a solid open jaw at one end, which jaw is shaped and proportioned to fit snugly around the squared portion of the drill-rod, so as to cause said drill-rod to move or turn with the wrench or remain at rest, accordingly as the wrench is moved or held stationary. Supported on the floor or platform of the derrick is a track preferably formed in two sections 10 and 11, said sections being preferably I-shaped in cross-section, as shown, and having their adjacent ends pivoted together by a rod or pin 12, which passes through alined openings formed in said sections and is driven into the floor or platform, as shown.

The track-section 10 is provided with a series of teeth 13, and slidably mounted in said section is a carriage 14, which operates the movable wrench 9 to turn the members of the screw-joint 6. The carriage 14 is provided with inwardly-extending lips 15, which engage the upper flange of the track, and pivoted in said carriage is an operating-lever 16, provided with a pair of depending pawls 17, adapted to successively engage the teeth of the track-section and move the carriage forward when the lever is operated. Mounted on the track-section 11 is a clamping member 18, designed to support the shank of the stationary wrench 8, said clamping member being adjustable on the track-section and secured in fixed position by a pin 19, the latter being adapted to engage any one of a series of openings 20, formed in the upper flange of said track.

Disposed at the juncture of the pivoted track-sections 10 and 11 is a rod or brace 21, the opposite ends of which are curved or recessed, as indicated at 21, and adapted to engage the pivotal pin 12 and the drill-rod, re-. spectively, as clearly shown in Fig. 1 of the drawings.

To couple the sections of drill-rod, the stationary wrench 8 is fitted around the squared portion of the lower member of the drill-rod and the outer end thereof against the clamping member 18. The movable wrench is then applied to the squared portion of the opposite rod-section and the carriage drawn back to the free end of the track-section 10. The lever 16 is now rocked backward and forward to successively throw the feeding-pawls into engagement with the teeth on the track, thereby feeding the carriage forward with a step-by-step movement. The carriage thus forces the movable wrench 9 toward the stationary wrench 8 and turns one, section of drill-rod so as to couple the screw-joint, and this operation of turning the wrench and joint by the movement of the carriage is repeated until the joint has been firmly screwed up. The clamping member 18 may be readily adjusted longitudinally of the section 11, so as to permit the stationary wrench to engage the squared portion of the drill-rod by removing the pin 19 and sliding said member on the track to the desired position and replacing the pin.

By having the track formed in two or more sections, pivoted together in the manner described, the section 10 is free to move laterally as the carriage moves forward, thereby permitting said carriage to automatically adjust itself to the varying distance between the track and the rod-sections caused by the angular disposition of said track-sections.

By having the track made in sections said track may also be quickly set up for use and conveniently packed for transportation or shipment.

Having thus described the invention, what is claimed is 1. In a device of the class described, a track formed of a plurality of pivoted sections, a carriage mounted for travel on one of said track-sections and adapted to support amovable wrench, and a clampingmember mounted on the adjacent track-section and adapted to support a stationary wrench.

2. In a device of the class described, a track formed of a plurality of pivoted sections, a carriage mounted for travel on one of said sections and adapted to support a movable wrench, and an adjustable clamping. member mounted on the opposite track-section and adapted to support a stationary wrench.

3. In a device of the class described, a track formed of two pivotally-connected sections, teeth formed on one of said sections, a carriage mounted for travel on said section, a pivoted lever carried by the carriage and provided with a pair of pawls adapted to engage the teeth for reciprocating said carriage, a movable wrench supported by the carriage, a clamping member mounted on the opposite track-section, and a stationary wrench supported by said clamping member.

4:. In a device of the class described, a track formed of two pivotally-connected sections one of which is provided with a series of teeth and the opposite section with a plurality of openings, a carriage mounted for travel on the toothed section and adapted to support a movable wrench, an adjustable clamping member mounted on the opposite track-section and adapted to support a stationary wrench,

and a pin carried by the clamping member and adapted to engage the openings in said track-section for securing said member in adjusted position.

5. In an apparatus for coupling and uncoupling drill-rods, the combination of a track formed in two sections, a pin forming a pivotal connection between said sections, a carriage mounted for travel on one of said sections and adapted to support a movable wrench, a clamping member mounted on the opposite section and adapted to support a stationary wrench, and a brace extending between the pivot-pin of said sections and the drill-rod.

6. In a device of the class described, an angularly-disposed track formed of two pivotally-connected sections, a carriage mounted for travel on one of said sections and adapted to support a movable wrench, an adjustable clamping member mounted on the opposite track-section and adapted to support a stationary wrench, and means for securing the clamping member in adjusted position.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

EDWIN O. MILLER.

W'itnesses:

MORRIS PATTON, JAMEs O. SKIDMoRE.

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