US1855325A

US1855325A - Spinning tongs

Info

Publication number: US1855325A
Application number: US418342A
Authority: US
Inventors: Sr De Witt Stone; William B Adkerson
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-01-03
Filing date: 1930-01-03
Publication date: 1932-04-26
Anticipated expiration: 1949-04-26

Description

April 26, 1 32- DE WITT STONE, SR., ET AL SPINNING TQNGS Original Filed Jan. 5, 1950 2 Sheets-Sheet 1 Inven or 7 7 276%]? 5%0149, is

71 17/75 M Z. ,JJAW-MK 1 By Attorney April 1932- DE WlTT-STONE, 92.. ET AL SPINNING TONGS 2 Sheets-Sheet 2 Original Filed Jan. 3. 1930 Inventor 531.

Zen 1Z7 fZ om A iiomey Patented Apr. 26, 1932 UNITED STATES PATENT OFFICE DE WIT'J. STONE, SR., ANID WILLIAM B. ADKERSON, F SAYRE, OKLAHOMA srrNNrNe TONGS 1 Application filed January 3, 1930, Serial No. 418,342. Renewed March 14, 1932.

This invention relates broadly to tools for usein conjunction with well drilling apparatus and has more particular reference to an improved clamp 01' tong adapted to engage a pipe section of a string of well piping to grip the piping section to facilitate attaching to the pipe section the spinning cable such as is used for rotating the pipe sections when coupling one end of the pipe secmj tion to an adjacent end of the next succeeding pipe section of the stringofpiping, it being Well known'in the art,thata string of piping comprises a plurality of pipe sections the adjacent ends of the pipe sections being ll threadedly connected together, and obviously suchconnection requires the spinning or rotating of one of the sections for screwing its ends into 'theadjacent end of the next adjacent pipe section of the string.

A primary object of this invention is therefore to provide a spinningclamp or tong comprising a pair of rigidly connected complemental clamping sections adapted to be clamped about the pipe to be rotated, and

' theinner opposed faces of the clamping section being provided with toothed jaws for biting engagement with the pipe section when the sections ofthe clamp are tightened about the pipe.

7 A still further objectof the invention is to'provide a clamp or'spinning tong of this character havingl suitable means associated therewith"whereby the conventional spinning rope coiled about the pipe section may haveits hook carrying end engaged with the clamp ortong for tightening the clamp about the pipe to urge thejaws of the clamping section into: gripping engagement with the pipe section.

A still furtherobject of the invention is to providea spinning clamp or tong of this character, which is simple in construction, strong, durable, clearly reliable, practical and eflicient in use and otherwise well adapted for thepurposedesigned.

' Figure l is a top plan View of the improved clamp, the clamping sections being shown in closed position.

Figure 2 is a similar view showing the clamping sections in open position.

Figure 3 is a side elevational view of the improved clamp, for moreclearly showing the use of the clamp.

Figure 4 is a perspective view of one of the clamping sections. Figure 5 is a perspective view of a sectional jaw as comprehended by the present'invention.

Figure 6 is a transverse sectional view takep substantially on the line 66 of Figure With reference more in detail to the drawings, it will be seen that the improved clamp comprises a pair of arcuate or

semi-circular clamp sections

5 and 6,'respectively, pivotally connected together at one end as at 7. The section 5 at its free end terminates in a pair of spaced parallel offset ears 8 which ears are apertured as at 9. The clamp section 6, at its free end terminatesin an outwardly directed lug 9 adapted to extend betweenthe ears 8 when the clamping sections are arranged in closed position as clearly suggested in Figure 1. Pivoted intermediate its ends between the ears 8 is a latch or dog 10, a pivot pin 11 extending through the intermediate portion of said latch or dog and the aligned opening 9. At one end thereof, the latch or dog 10- terminates in an enlarged cam head 12 engageable with the lug 9' when the latter is disposed between the ears 8 and co-operatingtherewith for bringing the

sections

5 and 6 inwardly toward one another when pressure or a pull is exerted on the outer end of the latch 10, in a manner to be hereinafter more fully described. I V

The

arcuate clamping sections

5 and 6 have their concave faces in confronting relation and on said confronting concave faces are each provided with an arcuate mortise rib or tongue 13, said clamping sections at their inner ends being thickened as at 14 to provide a vertical shoulder 15'at the inner end of the mortise tongue 13. 1

Each of the clamping sections is equipped with a sectional gripping aw designated generally by the reference character 16. Each of the gripping jaws comprises preferably three sections a, b and 0 and each of these sections is of arcuate formation clearly suggested in Figure 5. On their convex faces, the sections of the jaw are each provided with a mortise groove 17 for slidably receiving the mortise tongue 13 thus providing a mortise joint between the clamping sections and its respective gripping jaw. The sections of the gripping jaw are arranged in end to end relation when so secured in position on the

clamping sections

5 and 6 as clearly suggested in Figure 2.

Each of the sections a, Z), and c of the gripping jaws on their outer concave surfaces is provided with transverse, or vertically disposed gripping teeth 18,the working edges of the sectional jaw carried by the clamp section 5 being directed in'the opposite direction to the working edges of the sectional jaw carried by the clamp section 6, as is also clearly suggested in Figures 1 and 2. Obviously, this particular arrangement will provide a better gripping action for the clamp and will prevent rotative action of the clamp about the pipe section during fitting of the pi e section.

For the sake of illustration, in Figure 3, I have shown fragmentarily a pipe section designated generally by the reference character A, and in actual practice, the

clamp sections

5 and 6 are disposed about the pipe section A, with the teeth of the jaws of the respective section in biting engagement with the pipe section. The free ends of the clamping sections are secured and maintained in interlocking connection and are drawn toward one another for urging the teeth of the jaws into gripping engagement with the pipe by the action of the head 12 of the latch 10 against the lug 9 disposed between the ears 8, sufficient pressure being exerted upon the latch 10 for so urging the clamping members inwardly toward one another as will be occasioned by the pull exerted upon the spinning cable C, which cable as shown to advantage in Figure 3 has one end portion thereof coiled about the pipe section A, and at said one end is provided with a suitable hook H, which hook is extended through a suitable hook receiving opening 20 in the outer end of the pivoted dog or latch 10 for urging the head 12 of the latch into engagement with the lug 9. Manifestly then, when suitable pull is exerted upon the spinning cable C for spinning or rotating the pipe section A for moving one end of the section into threaded engagement with the adjacent end of the next adjacent pipe section of the well pipe string not shown, suitable pressure will be exerted upon the latch or dog 10 in the direction of pull for urging the free end of the clamping sections inwardly toward one another and the jaws of the respective sections into biting engagement with the pipe section to be spun or turned, and the teeth of the jaws so gripping the pipe will prevent any slippage of the clamps.

Each of the

clamping sections

5 and 6 on their outer convex sides or faces is provided with suitable handle forming loops 21 to facilitate the separating of the clamping sections for moving the jaws of the sections out of gripping engagement with the pipe section, after the pipe section has been threaded into engagement with its complemental pipe 7 section.

While I have herein shown and described the invention as being especially adapted for securing together sections of piping in an oil well piping string it is to be understood that my invention is capable for use for various other similar purposes wherein spinning or rotating of any suitable device, where such spinning and rotation is effected in a manner similar to that just described.

Even though we have herein shown and described the preferred embodiment of the invention it is to be understood that the same is susceptible to changes fully comprehended by the spirit of the invention as herein described, and within the scope of the appended claims.

Having thus described our invention, what we claim as new is 1. In a clamp of the character described, a pair of pivotally connected arcuate clamping sections, each provided on its inner face with a longitudinally extending mortise rib, means for pivotally connecting said arcuate clamping sections adjacent one end thereof, one of said clamping sections terminating at its free end in a pair of spaced parallel cars, a latching dog pivoted intermediate its ends between said ears, a lug projecting laterally from the free end of the other of said clamping sections for disposition between said ears when said clamping sections are in a closed position, whereby upon application of pressure to said clamping dog at one end thereof, the opposite end of said clamping dog will engage with said lug for normally urging said clamping sections inwardly toward one another about the object to be clamped, sectional jaw members carried by each clamping section, said sectional jaws being each provided with a mortise groove for receiving the mortise rib of its particular clamping section, and the sections of each jaw being disposed in end to end relation and being of arcuate formation, and teeth formed on the concaved face of each jaw section.

2. In a clamp of the character described, a pair of pivotally connected clamping sections each provided on its inner face with a longitudinally extending mortise rib, sectional jaw members carried by said clamping sections, said sectional jaws being each provided with a mortise groove for receiving the mortise rib of the partitcular clamping section, the sections of the jaw members being each provided with teeth, a 111g on the free end of one of said clamping sections, a dog pivot ally mounted on the free end of the other of said clamping sections and having a convex edge adapted to engage one face of said lug for retaining the clamping sections in clamping relation, said one face of said lug being concaved.

In testimony whereof We aflix our signatures.

DE WITT STONE, SR. WILLIAM B. ADKERSON.