US595657A

US595657A - Pipe-holder

Info

Publication number: US595657A
Authority: US
Publication date: 1897-12-14
Anticipated expiration: 1914-12-14

Description

(No Model.)

T. STEBBINS.

PIPE HOLDER.

No. 595,657. Patented De0.14,189'7.

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m A HIE Puma-urns wasnmctou n c U ITED STATES PATENT OFFICE.

TIMOTHY STEBBINS, OF DAVENPORT, IOWA.

PIPE-HOLDER.

SPECIFICATION forming part of Letters Patent No. 595,657, dated December 14, 1897. A

Application filed January 2, 1896. Renewed May 15, 1897. Serial No. 636,815. (No model.)

To all whom it may concern.-

Be it known that I, TIMOTHY STEBBINS, of Davenport, in the county of Scott and State of Iowa, have invented certain new and useful Improvements in Pipe-Holders, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The object of my invention is to provide a simply-constructed adjustable pipe-holder which dispenses with the necessity of a derrick and the labor of one or more men in regulating the descent of and holding pipes used in the construction of deep wells, so as to prevent their falling into the well prematurely or turning when another section of pipe is coupled thereto. This I accomplish by means of stationary and sliding jaws, together with such conjunctive devices and attachments as enable me to manipulate pipes of difierent diameters, substantially as hereinafter fully described and as illustrated in the drawings, in which Figure 1 is a plan view of my invention. Fig. 2' is a longitudinal vertical central section through the same. Fig. 3 is a detail view illustrative of the manner in which the movable jaw is engaged by the operating-lever. Fig. 4 is a detail showing a side view of the fulcrum end of the operating-lever, and Fig. 5is another detail showing a side view of anut to which said lever is fulcrumed.

Reference being had to the drawings, A represents a suitable board having a wide slot a made in it extending from one end thereof to about its center of length and of such width that the different sizes of pipes generally used in the construction of deep wells can be passed through the same. Secured to this board A at the end of the slot is a plate B, which has branches extending a short distance along each side of said slot, has parallel guides b 6 built up on each side thereof extending the greater part of the length of said plate, and has guide-tongues a, forming a continuation of the guides b, passing under a transverse bridge made on the transverse plane touching the end of the slot at, the central part of which constitutes the stationary jaw O.

1) represents the movable jaw of my invention. This jaw D is a sort of V-shaped easting, the parallel legs d of which are confined by the guides b and direct the movement of said jaw. When these jaws are nearest together, they can be made to clamp and hold a pipe of small diameter. They may be made to clamp and hold pipes of still less diameter, however, by the use of a detachable inverted- V-shaped false jaw E, which conforms in curvature to and fits down over the stationary jaw proper and is anchored in such position and in such manner as to be readily removable therefrom. The bite of the jaws O and D can be still further reduced by means ,of a serrated block (1, normally seated in a recess (1', made so as to accommodate the same in the jaw D opposite the engaging surface of jaw O, and this block is made adjustable by means of a gage-screw e, which latter is locked by the set-screw 6'. Near the end of plate B, back of jaw C, is a lug f, and passing forward through a suitable opening in this lug is an adjusting-bolt F. The forward end of bolt F extends into suitable openings 2', made with reference thereto in the rear wall of the false jaw E and in jaw O, and between said lug and these jaws it is tapped through a fulcrum-nut G of such shape and dimensions that when said bolt is turned the nut cannot turn with it.

The sides of nut G are provided with open bearings 00, and the openings leading down from the top of the nut to said bearings are less in diameter than the bearings. Now these bearings are. designed to receive the fulcruming-trunnions g, projecting inward from the bifurcations h of the end of the lever I, which are flattened on opposite sides, so as to permit them to be dropped into or withdrawn from said bearings when the lever is held in a vertical position, but which cannot be withdrawn therefrom when said lever is inclined.

Projecting laterally from the outer surface of the bifurcations h of the lever are suitable cam-shaped lugs is, substantially as shown,

which, when said lever is depressed in the manner shown in Fig. 2, engage corresponding lugs of the series of lugs m, projecting inward toward lever I from the parallel legs (1 of the movable jaw near their rear ends.

In operation my invention is manipulated as follows: The pipe is inserted down through the space between the engaging surfaces of the jaws O and D, and lever I depressed by inclining it in the direction shown in Fig. 2. This brings the lugs 70 in contact with lugs m and draws the moving jaw toward the stationary jaw and clamps and holds the pipe between them. If the diameter of the pipe is less than the distance between the jaws when the lever is depressed, said jaws can be brought still nearer together by moving the fulcrum-nut G away from the stationary jaw by properly turning the bolt F, and when this adjustment of the jaws is not sufficient the false jaw E may be utilized, as hereinbefore described and as illustrated in the drawings. Ordinarily, however, the proper adjustment of the jaws may be effected by moving the movable jaw by hand or otherwise until it touches the pipe and embraces the same between it and the stationary jaw and then depressing the lever, so that the eam-lugs thereof will engage some one of the series of lugs 'm on the legs of the movable jaw intersected by same transverse plane. \Vhile the serrated block (I can be used for reducing the grasp of the jaws, it is more often used to bite into the pipe and prevent its turning when additional sections of pipe are being coupled thereto.

What I claim as new is- 1. The combination with a stationary jaw, of a movable jaw having parallel legs extending therefrom and moving in guideways in the supporting-frame of said stationary jaw, 40 a lever, an adjustable nut in which said lever is fulcrumed and a bolt tapped through said nut whereby the adjustment thereof is accomplished; said. lever, engaging said legs when depressed and thereby drawing the movable jaw toward said stationary jaw.

2. The combination with a stationary jaw, of a movable jaw having parallel legs extending therefrom and moving in guideways in the supporting-frame of said stationary jaw and provided with lugs m a lever having camlugs 70, an adjustable nut in which said lever is fulcrumed, and a bolt tapped through said nut whereby the adjustment thereof is accomplished; the lugs k engaging lugs m when said lever is depressed and thereby drawing the movable jaw toward said stationaryjaw.

TIMOTHY STEBBINS.

Witnesses:

S. B. LAFFERTY, R. B. DIeK.