US1193091A - watson - Google Patents

Description

R. Y. WATSON. TUBING CATCHER. APPLICATION FILED APR. I0, 1915.

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Specification of Letters Patent.

Patented Aug. Lists.

Application tiled April1i), 1915. Serial No. 20;?!7.

To all whom 2'13 may concern Be it known that 1, ROBERT Y. WATSON, a citizen of the United States, residing at Taft, in the county offKern and State of California, have invented new and useful cost and loss of time as it sometimes requires months of work, with fishing tools and the like before the lostsections are secured and removed.

One of the objects of the present invention is to provide a tubing catcher on which is mounte'da luralitv of gripping jaws;

, and to provide means 'or automatically and instantly expanding same to engage the main welhcasin the moment a section of tubing parts an drops.

Further objects will hereinafter appear.

The invention consists of the parts and the construction and, combination of parts catcher.

f a downwardly extending as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which-- i Figure 1 is a side elevation of the tubing Fig. 2 shows the applipation of the invention. Fig.3 is a central, longitudinal section on line 3-3, Fig. 1. Fig. 4 is a crosssection on line H, Fig. 1.

More particularly described, A indicates the main exterior casing of an oil wellfi the tubing, 3 the pump barrel which is secured to the lower end of the tubing, 4 the piston or plunger, 5'the piston-rod, 6 the strainer pipe which is screwed into the intake end of the pump barrel, and 7 the tubing catcher in general which forms the subject-matter of the present invention.

The tubing catcher-consists of a head 8 which is adapted to be screwed into the lower end of the strainer pipe, as indicated at 9. Formed integral with the lower end of the head or otherwise secured to same is rod 10, and slidably mounted. on the'rod is a tube 11, the upper end of whichis flanged, as at 12, to form a seat for a pair of gripping members 13. Mounted on the lower end of the rod is a nut, and interposed between said not and the upper flanged end of the tube is a coil spring 15. This spring forms a resilient seat for the tube and also for the grip ing members, as they are directly supporte by the flanged end of the tube.

Each side of the head is provided with an nclined groove'lG whichis dovetail she. ed n cross section, and each gripping mem or is provided with :1 lug 17 wh ch fits the adacent groove. The gripping members are thus slidably mounted on the head proper and the head at thesame time serves as a wedge to force the gripping members out 'wardly into engagement with the interior surface of the well casing A. The grippin members are preferably segmental shape in cross section to correspond with the innor surface or face of casing A and their outer faces are provided .with teeth, such as indicated at 18, to form an eliicient'grip.

In operation, referring to Fig. 2, it will be seen that the tubing catcheris mounted below all the suspended parts, such as the tubing, pump strainer, pipe, etc. It is thus in position to stop the parts from falling or dropping farther down into the well if any of the parts become detached or accidentally dropped. The tension of the spring is not sufiicicnt to raise the tube and wedges 'sulliciently to bring these into engagement with the casing but merely. acts as a cushion or resilient support for same, which tends to project thetube and wedges in an upward direction if the head 8 and rod 10 should suddenly drop.

Referring to Fig. 3,113 can be seen that a,

quick downward movement of the head 8 will cause it to pass down botween the rip ping members 13 like a wedge and orce these outwardly intogripping engagement with the interior face of the main well casing A. The lostparts can thus only drop, at the most, a few inches before they are caught by the expanding or projected ac.

t-ion of the gripping members. The gripping inembcrs 13, together with the tube Boating members,; with relation 11, act as rod 10, first by reason of. the

to head ,8 and resilient cushion or support provided by spring 15, and, second, by the action oi the oil entering the interior of tube 11 and acting interiorly and exteriorly on flange 10.

downward movement of head 8,

to limit myself to the specific design and eonetruction here shoa n.

Having thus described my invention, what 1 claim and desire to secure by Letters latent isl. A tubing catcher comprieing a head, a gripping member carried by the head for projcrtion therefrom and a mounted tubular member open at its lower end and substantially closed at its upper end, aaid tubular member serving as a" mean for projecting the gripping member and being constantly unrestrained for open atiou by the resistance of a liquid when the tubing catcher is accidentally dropped therein. l

A tubing catcher eonmrising a head, a

pair of gripping members slidably mounted on the head, a tube slidably mounted with relation lo the head and free of the gripping inembere a dungeon the upper end of the tube fol-mung a support for the gripping members, and a resilient support for the tube, freely supporting the name in normal resiliently position, said tube being always free for sliding relative to the head.

3. A tubing catcher comprising a head,

said head having, an inclined groove formed on each side, a gripping member slidably' mounted in each groove, a freely movable tube slnlably mounted with relation to the head, a flange on the upper end'of the-tube forming a support for the gripping members and an abutment lor the lnpud to act upon when the same is dropped and a rcsilicut support freely mounting the tube when the latter is in normal position.

l. A tubing catcher comprising a head, said head having an inclined groove formed on each side, a gripping member slidably mounted in each groove, a downwardly cxtending solid rod on the lower end of the head, a tube slidably mounted on the rod, :1 flange on the upper end of the tube i:'orming a direct sup port or seat for the gripping members, and a spring on the rod forming a support for the tube.

A tubing catcher comprising a head, a

g gripping member carried by the head for propection therefrom, and means movable relative to thegripping member and head and operable solelyby the resistance of a liquid in dropping therein. for projecting the gripping member from the head.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ROBERT Y. \VATSON il itnesoes A R. H. iHCCRl'LUiY,

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