US1045728A - Adjustable casing-spear. - Google Patents

Description

D. G. MONSEES.

ADJUSTABLE GASING SPEAR.

APPLICATION FILED MAY 24, 1911.

1,045,728. Patented 11011.26, 191.2.Y

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D. G. MONSEES.

ADJUSTABLE CASING SPBAR.

APPLICATION FILED MAY 24, 1911.

1,045,728. Patented Nov. 26, 1912.

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DIETRICH Gr. MONSEES, OF SEDALIA, MISSOURI.

ADJUSTABLE CASINGr-SPEAR.

Specification of Letters Patent.

Patented Nov. 26, 1912.

Application filed May 24, 1911. Serial No. 629,170.

To all whom it may concern:

Be it known that I, DIETRICH G. MoNsEns, a citizen of the United States, residing at Sedalia, in the county of Pettis and State of Missouri, have invented new and useful Improvements in Adjustable Casing-Spears, of which the following is a specification.

This invention relates to improvements in casing spears, the object of the same being to provide a simple and edective means for recovering pipes or casings from drilled wells.

IVith the above object in view, and others which will appear as the nature of the description progresses, the invention resides in the novel construction and arrangement of parts hereinafter fully described and claimed.

In the drawings accompanying this speciication, there has been illustrated a simple and approved construction of my invention, it being understood, however, that the showing therein is lnerely illustrative, and that minor details of construction, as to size, shape, proportion, material, etc., within the scope of the appended claims, may be made, if desired.

In the drawings-Figure 1 is a side elevation of a casing spear constructed in accordance with the present invention. Fig. 2 is a vertical longitudinal sectional view of the same. Fig. 3 is a detail view of the stub and core. Fig. 4 is a similar view of the tube. Fig. 5 is a perspective view of one of the guides. Fig. 6 is a similarview of one of the travelers. Fig. 7 is a similar view of one of the jaws which is secured to one of the travelers. Fig. 8 is a horizontal sectional view upon the line 8 8 of Fig. 1.

Like numerals of reference designate corresponding parts throughout.

The numeral 1 designates the stub or rectangular portion of my device. This stub is integrally formed at the upper portion thereof with a threaded, preferably coneshaped head 2 whereby the said stub may be connected with the regular drilling tools, if desired, and the rectangular formation of the stub permits of the employment of a wrench, whereby the said stub may be rotated to permit of its head 2 engaging with the threaded end of the drilling tool, and for another purpose which will presently be set forth. The stub 1 has its lower face formed with a threaded extension 3, and integrally connected with the said lower face of the stub and projecting a suitable distance therefrom is what I term a core 4. This core or extension is threaded as at 5, the said threaded portion adapted to receive an adjusting nut 6, the function of which will also hereinafter be set forth. The threaded eX- tension 3, as well as the lower portion of the stub 1 is formed with a plurality of openings 7 as shown in the figures of the drawing, and the threaded portion 3 of the said stub is adapted to coact with interior threads 8 provided upon a tube or casing 9. This casing 9 preferably has its lower face coneshaned as designated by the numeral 10, and the said casing or tube is provided with a plurality of vertically arranged openings 11, the same being preferably four in number, but it is to be understood that the casing may be provided with any ynumber of said openings. Secured within the casing adjacent the openings 11 are the removable guide members 12. Each of these guide members has its opposite vsides provided with tracks 13, and the said tracks are inclined from the' top of each of the guides toward the bottom thereof.' l

The numerals 14 designate the traveling members of the improvement. These travelers each have their opposite sides grooved as at 15, whereby the said travelers may be slidably positioned upon the tracks of the adjacent guide members 12. The travelers 14 each have their upper ends preferably provided with an eye 16, and each of the said eyes is adapted to receive a flexible element such as a wire 17, which passes through an opening 7, and whereby the said guides may be moved upwardly upon the tracks so as to bring the engaging faces of jaws 18, which are connected with the travelers, out of contact with the pipe section which is to be removed by the support. The jaw members preferably have their outer faces beveled or inclined, the said faces being further provided with teeth 19, and the jaw members are formed with openings which are adapted to aline with similar openings in the travelers 14 and which are adapted to receive securing elements such as screws 20. The jaws, it is to be understood, are arranged within the openings 11 of the tube or casing 9, and positioned upon the nut 6 and surrounding` the core 4 of the stub is a washer 21. This washer 21 is formed with off-sets or fingers 22, the latter also extend ing through the openings 11 of the tube 9,

and it will be noted that by regulating the nut 6 in relation to the core 4, the said washer will be moved either upwardly or downwardly asr desired, and as -a consequence the throw or projection of the jaws 18 will be also regulated, so that the said support can be adjusted for various sizes of pipes or tubings.

Having thus fully described the said invention, what I claim is 1. A casing spear including a stud provided with a depending core, a casing surrounding the core and attached to the stud, said casing being formed with a plurality of openings, jaws adapted to travel within the said openings, and an adjustable washer secured to the core and forming a support for the jaws and adapted to limit the movement of the jaws in one direction.

2. A casing spear comprising a stub formed with a core, a casing surrounding the core and attached to the stub, said casing being formed with a plurality of openings, jaws adapted to travel within the said openings, means for retracting the jaws within thev casing, and means for regulating the downward movement of the jaws in relation to the casing.

3. A casing spear including a stub having a threaded head, the said stub having its lower portion also threaded, the stub having its said lower portion provided with a plurality of openings, a core integrally formed upon the stub, an adjustable member upon the core, a casing having a threaded portion engaging with the lower threaded portion of the stub, inclined tracks within the casing, the said casing being formed with openings adjacent the tracks, travelers mounted upon the tracks, removable jaws connected with the travelers, the said travelers and jaws adapted to normally rest upon the adjustable member, and flexible elements connected with the travelers and passing through the openings of the stub.

4. A casing spear comprising a stub having a core and a casing connected with the said stub, and surrounding the core, the said casing being formed with a plurality of openings, an adjustable element upon the core, said adjustable elementI comprising a washer having lingers arranged within the openings, the inner face of the casing being provided with removable guide members each having its opposite sides Jformed with a track, each of the said tracks being arranged at an inclination from the top to the bottom of the guides, travelers having slotted sides engaging with the tracks of the guides, removable jaws each having their outer faces inclined and 'formed with teeth connected with the travelers, and the said travelers and jaws adapted to rest upon the lingers of the washer.

In testimony whereof I aiiiX my signature in presence of two witnesses.

DIETRICH G. MONSEES. Witnesses:

E. E. May, G. H. BALDWIN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. YC.

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