US1263544A - Fishing-tool. - Google Patents

Description

V. H. FRANCIS.

FISHING TOOL,

APPLICATION FILED JULY 16. I917.

Patented Apr. 23, 1918.

@TAT

sinner VINCENT H. FRANCIS, OF DRUMRIGHT, OKLAHOMA, ASSIGNOR TO ERICK-REID SUPPLY COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

FISHING-TOOL.

Specification of Letters Patent.

Patented Apr. 23, 1918.

Application filed July 16, 1917. Serial No. 180,796.

To all whom it may concern:

Be it known that I, Vnvonnr H. FRANCIS, a citizen of the United States, and resident of Drumright, in the county of Greek and State of Oklahoma, have invented a new and useful Improvement in Fishing-Tools; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to fishing-tools for use in connection with oil and other deep wells.

The object of my invention is to provide a simple and compact tool of this character adapted to automatically take hold or grip a portion of a sucker-rod or other device which may have become fastened in the well, and so it may be jarred or worked loose.

To these ends my invention comprises the novel features hereinafter set forth and claimed.

In the accompanying drawing, Figure 1 is a vertical elevation of my improved tool; Fig. 2 is a vertical section showing the tool in the act of engagin the upper end of a sucker-rod; and Fig. 3 i a like view showing the tool after it is engaged by the suckerrod, and in position for pulling the same upwardly.

In the drawings, the numeral 2 designates the cap or head of the tool, which has the threaded portion 3 engaging the threads 4 on the inner face of the upper end of the shell or casing 5. The casing 5 has the vertical slots 6 formed therein to receive the supportingarms 7. These arm are secured to the collar 8 by means of screws 9. The collar 8 has the annular groove 10 formed therein and the arms 7 have the projections 11 adapted to enter aid groove, said projections being adapted to take the shear of said arms and relieve the strain on the screws 9.

The collar 8 is adapted to move up and down. on the support 12 which is screwed at its upper end into the cap 2. The lower end of the upport is the head or stop 13 which i engaged by said collar when the arms are lowered as in Fig. 3 and which also regulates the downward movement of said collar 8.

As above stated, the supporting-arms 7 fit into the lots 6 and the outer faces of said arms are flush or practically flush with the outer wall of the casing, so that there is no interference in the lowering of the easing into the well.

The lower ends of the supporting arms are provided with the shoulders 14 and below said shoulders the arms are beveled as at 15 to permit the arms to pass readily over the head 16, for instance, at the upper end of the sucker-rod which i to be removed. The outer end of the supporting arms are also beveled as at 17 to conform to the bevel face 18 at the lower end of the shell or casing, and which permit the supporting arms to be moved outwardly as they are engaged by the head 16 of the sucker-rod.

When my improved tool is in use, it is lowered into the well, and when the lower ends of the supporting arms strike the projection or head 16, the arms are forced upwardly with the collar 8 sliding; on the support 12 into the position shown in Fig. 2. A further lowering of the tool causes the beveled faces 15 to move over the head 16 forcing the arms outwardly, until the shoulders 14 pass beyond the head 16 whereupon the arms spring inwardly and said shoulders engage the lower face of the head 16, as indicated in Fig. 3. By applying a pull to the tool the sucker rod may be jarred or loosened and withdrawn from the well. In this way the arms 7 have their shoulders engaging directly under the head 16 of the sucker rod, and there is a direct and positive downward pull on said arms when the force is applied to lift the sucker rod or loosen it from its position in the hole, as distinguished from the ordinary friction hold where teeth are forced into the body of the tool and the hold depends entirely upon friction. Furthermore, all the weight of the spring of sucker rods is carried by the head 13 of the support 12 as the casing 5 carries none of the load.

By my invention, I provide a very simple and efiicient form of fishing-tool in which the supporting-arms or jaws are held within the walls of the casing so as to leave the outside of the casing smooth and only a small portion at the lower end of the arms projecting into the casing, leaving practically the en tire bore open for the introduction of the head or portion of the device in the well which is to be seized by the arms.

What I claim is:

1. In a fishing tool, the combination of a uitable casing having a plurality of vertical slots formed therein, a cap in said casing, a supporting member engaging said cap extending down Within said casing, a collar movable on said supporting member, sup portin rms connected to said collar engaging'said slots, and an enlargement on said Supporting member engaged by said collar.

2. In a fishing tool, the combination of a suitable casing, having a plurality of vertical lots formed therein, a cap in said casing, a supporting member engaging said cap extending down within said casing, a collar movable on sald supporting member, vertlcally movable supportlng arms engag ing said slots the lower ends of said rms having tool engaging shoulders, and belng beveled at then: lower outer edges, and the lower end of sald casing having corresponding beveled faces.

In testimony whereof, I the said VINCENT H. FRANCIS, have hereunto set my hand.

VINCENT H. FRANCIS.

Witnesses J H. HUME, HARRY NEUBEYER.

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

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