US1896415A

US1896415A - Line tightener

Info

Publication number: US1896415A
Application number: US577012A
Authority: US
Inventors: Pyles Robert Mcdonald
Original assignee: JAMES A KAMMERDINER
Current assignee: JAMES A KAMMERDINER
Priority date: 1931-11-24
Filing date: 1931-11-24
Publication date: 1933-02-07
Anticipated expiration: 1950-02-07

Description

R. MC D. PYLES LINE TIGHTENER Feb. 7, 1933.

Filed Nov. 24, 1931 Patented Feb. 7, 1933 UNITED sraras;

11m-Err ion-ICE 'A ROBERT MCDONALD PYLns, or".ialixnnsrnnnanunciante,nssreivononderin-imm?V y To JAMES A. KAMMERDINER; or Los-ANGELES, cALrronNIA i 'LINETIGHTEN-sn Appneatmnfmea rmenuter 24, 19in. vserial Na5771,01241,'`

This invention relates to a device fortightening lines which are being wound uponV drums or reels. It has utility in such appa-V ratusv wherein a heavy load is placed on theV line in unwinding and a lightload onjwinding, the line -being 'alternately wound andA unwound on the drum. Under such conditions, the line when wound on the drum wil-l' be loose and with a plurality of layers of line, the feeding end of the line under load in many instances may squeeze itself between the underlying convolutions and cause kinking, rasping, flattening or a-brading of the e drum or reel structure known in the art as a draw works. This structure includes a drum upon which a cable isV wound.,V The cable is passed over a crown block andv through a traveling block. Drill pipe and the like are lowered and pulled from -thewell hole by aid ofthe draw works and cable. The

sand feet long and is of great weight.' This string is elevated by reeling the Vcable on the drum. vWhen a stand-ot pipe consisting of a number of sections of pipe has been drawn out of the well hole, the string is supportedV inthe'liole by independent means such as slips mounted on the rotary table. The stand .of pipe is unscrewed from thev string and disposed in a suitable place in thederrick. Next, the elevator is lowered and the operation repeated until the desired length of drill pipe has been withdrawn from the hole. At each lowering of the cable, the load thereon is relieved of the weight of the drill pipe string and at each raising of the cable the load of the entire string is placed on the cable. The result is that the cable spools loosely on the drum in winding, and in un-` winding excessive wear and injury to the cable occurs due to the cable squeezing between convolutions.

a line tightener Iautomatically operated by the line to place a load 4thereon when winding` up and torelease whenl unwinding.V

more 'specific object'of this invention is to provide a tightener o' kthe character `describedwhichanay be mounted in ay stationary position and comprisesa slipper through which the line isv passed, the slipper having jaws which Iare collapsed uponthe line by travel of the slipper. i i

These objects,together with `other objects and correspon-ding accomplishments, are attained by means' ofthe embodiment of my invention illustrated in the accompanying drawing, inrwhich':

Fig. 1 1s an elevation of a derric'kvwith theessential elements of the structure ap-v plying'to the invention as shown; Fig. 2 is 'a face view, partly iny section, .of the lino tightener;-Fig. Sis a section as seen on the line 3-3Jof AFig. 2. ,Y

Referring particularly` to the drawin a conventional typeoi derrick is indicate by.

5 and is provided with a crown block over which l`a cable 7 is passed. This cable is wound 'upon a drum 8. Thev construction just described is that of the rotary oil Well drill'- ing outfit commonly employed. Mounted on the derrick posts and between adjacent posts is the linetightener 9.y

`The line tightener comprisesa frame 1,0 f

having slip members 10aof'like construction and sidep'lates 10b bolted thereto. There is al cable opening extending longitudinally through the trame.-V The slip members 10a have slide faces which are inclined downwardlytow'ard one another. Mounted in the frame is a slipper` comprising a jaw 11 and an opposing jaw 12.'y There is an overhanging'projection 18 onthe javv 12 and an underhangng projection-14Cy withthe jaw slidably mounted between the projections ferV lateral movement. The jaws are recessedon their opposing faces, and mounted in the re- V the slipper is at the top of the frame the jaws are in expanded relation and the cable may pass between the rollers without interference. When the slipper is at the bottom of the frame, the aws will be contracted or collapsed and the rollers will bear against the cable so that the latter must weave therebetween. Since the cable is commonly a wire cable and has stiffness, this causes impedance to the movement of the cable. The frame is supported by tie rods 17 on the corner posts of the derrick and near the crown block, so that there is relatively small side movement as the line passes from one .end of the drum 8 to the other in reeling and unreeling.

In ,operation of the device, the load is placed on the cable as it unreels and the slipper would be carried or urged to the top of the frame by the action of the cable on the aw rollers. Gravity tends to move the slipper` downwardly, and in reeling up the-cable the Vslipper would be dragged downwardly and collapsed so as to firmly ,grip the cable and place an effective load thereon. Thus, the

- action is automatic.

What I claim is:

1. A line tightener for aline spooling drum wherein the load on the line is relieved in winding of the line thereon: said tightener .comprising a frame, a slipper slidable longi-. tudinally in said frame, said slipper including opposed jaws for grasping, pressing Vand permit-ting travel of the line therebetween in both directions and having means coacting r with said frame to collapse said jaws at one end of said frame and to enable opening .of said jaws at the other end, projecting means on said jaws to define a sinuous path for said line, saidslipper being urged toward the col lapsing end of said frame by said line when moving in load relieved direction and toward the jaw opening end-when moving in the op-v posite direction. Y v

2. A line tightener for a linespooling drum .i wherein the load on the line is relieved in winding of the line thereon: said tightener comprising a frame, a slipper 4slidable longitudinally` in said frame, said slipper in.- cluding opposed jaws having means coacting with vsaid frame tocollapse said jaws at one end of said frame and to enable opening of said jaws at the other end, rollers journalled on said jaws and disposed in staggered relation to grasp, press and hold the line in weaving position therebetween, said slipper being urged toward the collapsing end of said frame by said line when moving in load relieved direction and toward the jaw opening end when moving in the opposite direction. 3. A line tightener for a line spooling drum wherein the load on the line is relieved in 'path for said line, said slipper being urged toward the collapsing end of said frame by said line when moving in load relieved direc# tion and vtoward the jaw opening end when moving in the opposite direction.

4.' A line tightener for a line spooling drum wherein the load on the line is relieved in winding of the line thereon: said tightener comprising a frame having opposed slipper ways inclined longitudinally toward one another, a slipper slidable in said ways, lsaid slipper including opposed jaws having meansl coasting with said frame to collapse said jaws at one end .of `said frame and to enable opening of said jaws at the other end, rollers journalled on said jaws and disposed in staggered relation to grasp, press rand hold the line in weaving position therebetween, said slipper being urged toward the collapsing end of said frame by rsaid line when moving in load relieved direction and toward the jaw opening end. when moving in the opposite direction.

5, A line tightener for a line spooling drum wherein the load on the line is relieved in winding of the line thereon: said tightener comprising a frame having opposed slipperv ways inclined longitudinally toward 4`one la-nother, a slipper slidably longitudinally in said frame, said slipper including opposed jaws for grasping, pressing, and permitting travel of the line therebetween in both directions, one jaw riding on one -way and the other on the opposed way, means coupling said Vjaws for longitudinal `movement tiogether lwherebyto collapse said aws in po sition atone end of said frame and to enable opening of said jaws in position at the other end, projecting means on said jaws to define a sinuous path for said line, said slipper being-urged'toward the collapsing end of said frame by said line when movingV in load relieved direction and ltoward the jaw opening end when moving in the Aopposite direction.

In witness that I claim the foregoing I have hereunto subscribed my name this 16th day of November, 1931.

ROBERT MCDONALD PYLES.

winding of the line thereon: said tightener