US1169849A - Clamp for well-drilling cables. - Google Patents

Description

0.1. MAPES & F. c. YANDA. CLAMP FOR WELL DRILLING CABLES.

APPLICATION FILED IAN- 6, 19l5- Patented Feb. 1, 1916.

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CLARENCE '1. MAPES, OF GRAFTON, AND FERDINAND C. YANDA, PITTSBURGH,

i PENNSYLVANIA, ASSIGNORS TO OIL WELL SUPPLY COMPANY, OF

PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

CLAMP FOR \VELiL-DRILLI'NG CABLES.

messes.

Specification of Letters Patent.

Application filed January 6, 1915, Serial Na 767.

To'all'whom it may concern:

Be it known that we, CLARENCE T. Marne and Fnnnrxnxo C. YAxnA, citizens of the United States, and residents of Grafton and Pittsburgh, respectively, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Clamps for \Vell-Drilling Cables,

' from a w'edging action such as results from the use of tapered or wedge-shaped slips, and the primary object is to provlde a pair of opposed jaws of improved construction,

. together with improved means for holding and retaining the jaws in the body.

'A'further purpose is to provide a clamp of the general type stated, wherein the clamp-suspending means is connected directly to thebody instead of to the lighter and more easily broken jaws as heretofore proposed.

In the accompanying drawings, Figure l is a front elevation of the improved clamp,

. and Fig. 2 is a view in top plan of the same.

Figs. 3 and 4 are vertical sections, taken on lines 3-3 and 44*., respectively, of Fig. 2. Fig. 5 is a sectional plan, taken on line 55 of Fig. 4.

Referring to the drawings, 2 designates the clamp-body which is formed with the vertical cylindrical bore 3, the latter being open at one side through a vertical face to form the cable slot or passage 4. Project ing from the upper portion of the body at diametrically oppositesides of the bore are the hook-like ears 5 for receiving the usual reins, not shown, for suspending the clamp from the temper screw swivel bar of well drilling apparatus in manner familiar in the art. The body bore and the supporting ears 5 are located at one side of the center of the body so that the latter'may be properly balanced when suspended, the heavier rear side.

neath and with their headed extremities disposed downwardly and thus presenting no obstructing projection which would be Patented Feb. 1, 1916.

liable to injury if exposed at the upper sides of the ears.

Operative within bore 3 is the pair of op posed jaws 7. Each jaw is formed with an elongatedbody portion 8 of segmental shape in cross-section and with its outer face curved to fit and rotate within the cylindrical bore 3. The jaws are preferably of such length that they depend beneath the lower end of body 2, while at their upper ends they are flanged laterally at 7 to engage the flat top bearing face 9 of body 2, said face en-. circling bore 3 and interrupted only by the.

cable passage 4. By this means the jaws are rotatably supported in the body bore with flanges 7 holding them against downward displacement. An arm 10 projects laterally from each jaw, and these arms are" operative in the lateral enlargements 11 in opposite walls of cable passage 4, these en,- largements being located intermediatethe' affording the jaws and their arms free movement as required for clamping andfor reupper and lower ends of the clamp body and soleasing the cable. With the jaw bodies 8 of I segment shape in cross-section they may be" rotated into the full open position shown in' Fig. 5, with the rear faces of the j aws in en gagement with each other and with arms 10 moved fully backward or outward into the passage enlargements 11. Arms 10 and cable passage 4 are of such size that when 130- sitioning' the jaws by'moving them down ward one after the other into bore 3, the arm is passed downwardly through passage 4 until it reaches enlargement 11. v

.For clamping, the drilling cable C, the faces of the jaws are formed with semicircular depressions 12 located at one side of or eccentric to the center of bore 3, and fitting these depressions are the cable-gripping liners or slips 13. The liners are flanged at their upper ends at 13 to fit corresponding enlargements of the upper extremities of cavities 12, and by this means together with the countersunk securing screws 14 entered through the jaws, the liners are securely held. Liners of various sizes may be provided for adapting the same clamp to cables of different diameters, and with the gripping elements thus arranged, the parts most exposed to Wear, 2'. e., the liners, may be rethan the other if turned to one side.

engagement with both arms, as in Figs. 1.

and 2, and carrying the screw 17 for obtaining the desired adjustment.

. Itis characteristic of the invention that the clamp-suspending means are connected to the clamp body rather than to the jaws, thereby relieving the latter of destructive strains. At the same time the jaws are positively supported by the body, the flanged upper extremities of'the jaws bearing on surface 9 in whatever position the jaws may be turned, the interruption of said bearing surface formed by cable passage 4 being bridged in part by both jaws as when the parts are in the symmetrical adjustment shown in Figs. 1 and 2, orby the flange of one jaw more In any case, the support is secure and positive and at right angles to the elongated gripping hold of the jaws, such hold being of uniform pressure from end to end of the pair of jaws.

We claim 1. In cable suspending means and in combination, a clamp body having a vertical bore of fixed dimensions and a cableentering passageway leading into said bore, opposed cable-grippingjaws extending through and rotatable within the bore, each'jaw being flanged outwardly at its upper end, said flanges being adapted to rest upon the top of the clamp body to support'the jaws, and jaw-adjusting means, said latter means including an element carried by and movable with each jaw, said elements cooperating in moving the jaws to cable-gripping position and maintaining them in such position, said body being recessed to permit free movement of said elements.

2. In cable suspending means and in com- .bination, a clamp body having a vertical bore of fixed dimensions and a cable-entering passageway leading into said bore, op-

posed c'ablegr1pping jaws extending through and rotatable within the more, each jaw being flanged outwardly at its upper end,/said flanges being adapted to rest upon the top body being recessed to permit free move-' ment of said elements, said cable-entering passageway having a width to permit the passage of either of said elements when alined therewith, but insuflicient to permitsimultaneous passage of both elements.

3. In cable suspending-means and in combination, a clamp body having a vertical bore of fixed dimensions and a cable-entering passageway leading into. said bore, 0pposed cable-gripping jaws extending through and rotatable within the bore, each jaw being flanged outwardly at its upper end, said flanges being adapted to rest upon. the top 'of the clamp body to support the jaws, and jaw-adjusting means, said latter means in-,

eluding an element carried by and movable with each jaw, said elements cooperating in moving the jaws to cable-gripping position and maintaining them in such position, said body being recessed to permit fre movement of saidelements, said body carrying members independent of the j aws to permit suspension of the body.

In testimony whereof we aflix our signatures in presence of two witnesses.

CLARENCE T. MAPES. FERDINAND C. YANDA. I/Vitnesses:

W. R. SHoUP, J. P. DONALDSON.

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