US1159616A

US1159616A - Rope-clamp.

Info

Publication number: US1159616A
Application number: US86959614A
Authority: US
Inventors: Samuel C Swisher
Original assignee: ROSS W MARKEL
Current assignee: ROSS W MARKEL
Priority date: 1914-10-31
Filing date: 1914-10-31
Publication date: 1915-11-09
Anticipated expiration: 1932-11-09

Description

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ROPE CLAMP.

APPLICATION r1150 OCT. 31. 1914.

Patented Nov. 9, 1915.

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S. C. SWISHER.

ROPE CLAMP.

APPLICATION FILED OCT. 31. 1914.

.1 1 59 ,6 1 6 Patented Nov. 9, 1915.

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UNITED STATES PATENT @FFIGQ.

SAMUEL C. SWISI-IER, OF SAN BERNARDINO, CALIFORNIA, ASSIGNGR TO ROSS W. IVLARKEL, OF SAN BERNARDINO, CALIFORNIA.

ROPE-GLAMP.

Application filed October 31, 1914.

To all whom it may concern Be it known that I, SAMUEL C. SWISHER, a citizen of the United States of America, residing at San Bernardino, in the county of San Bernardino and State of California, have invented certain new and useful Improvements in Rope-Clamps, of which the following is a specification.

The present invention relates to improvements in rope clamps, and while it is designed especially for pulling large wires and cables as used by electric light, street car and other electrical construction, and also for pulling ropes used by riggers, it will of course be understood that the rope clamp is applicable for use wherever such an implement is required. In pulling ropes, cables, and wires, a clamp is required which may be quickly applied, and with equal quickness and facility be detached from the rope, and which, when in use, shall be clamped to hold the rope securely and without slipping.

By the utilization of my device the rope may be clamped at any desired point for pulling, and the device may be shifted along the rope or cable with facility and adjusted to the proper point at which the pull is to be applied.

The invention consists essentially in certain novel combinations and arrangements of clamping means used in connection with a pair of clamping blocks, as will be more fully hereinafter described and claimed.

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention, and a modified form of one of the clamp blocks, constructed according to the best modes I have so far devised for the practical application of the principles of the invention.

Figure 1 is a side elevation of the clamping device operatively applied to a rope or cable. Fig. 2 is a plan view of the device laid open. Fig. 3 is a transverse sectional view on line 3-3, Fig. 1. Fig. .t is a central longitudinal vertical section of one of the clamp blocks showing the friction groove for the rope. Fig. 5 is a plan view of one of the cleats with an eye at the end, and Fig. 6 is a side view of the same cleat. Fig. 7 is a plan view of a cleat with a hook, and Fig. 8 is a side view of the same cleat. Fig. 9 is a view of a double cleat, one of which is used at one end of each clamp block. Fig. 10 is a Specification of Letters Patent.

Patented Nov. 9, 1915.

Serial No. 869,596.

side elevation of a portion of two blocks, showlng not only the friction groove curved,

but showing the faces of the blocks curved as well.

In the preferred embodiment of my invention as illustrated in the drawings, I employ two clamping blocks as 1 and 2, which may be made of suitable material either wood or metal, and in some instances the wooden blocks are lined or faced with metal plates. These blocks are of suitable dimen sions, and they may be varied in size to adapt them to different sized ropes, cables or wires. One face of each block, the faces which are opposite each other when the blocks are in operative position, is grooved from end to end, as shown in Fig. 2, where the groove in the block 1 is indicated as 3, and the groove in the block 2 is indicated as 4:. The grooves are of suitable size to accommodate several sizes of cable or rope, and in Figs. 1 and 4, it will be seen that the grooves follow a compound curve from one end of the block to the other. This formation of groove is provided in order that the cable or wire may be rigidly held between the two blocks, because of the increased friction and grip with which the blocks are clamped to the cable or wire.

Each of the blocks is equipped with a series ofmetallic cleats or straps spaced apart at convenient intervals throughout the length of the block, and these cleats not only strengthen the wooden blocks themselves, but serve the purpose of supporting the meansfor clamping the blocks on the wire or cable 5. There are two forms of these metallic cleats or straps, as best shown in Figs. 5 to 8, Figs. 5 and 6 illustrating a cleat 6 with an eye 7 turned up at one end, and Figs. 7 and 8 illustrating a cleat S with a hook 9 forming one terminal of the strap. One end of all of the cleats is turned over to form a hook as 10, which hook engages over an edge or corner of the blocks to which it is attached by screws or bolts passed through the openings 11 in the cleat. It will be readily seen that these cleats are located transversely of the blocks, so that the hooks 9 and eyes 7 are positioned at opposite sides of the block.

In Fig. 2 it will be seen that there are four eyes 7 in juxtaposition, when the clamp is turned open, and through these eyes the end portion 12 of the flexible wire or pull these eyes is adapted: to. engage loop L61 formed: at the bend; between (lOUb'lflClGtll'r':

which:.is-fashioned with a; pair of: straps 171 and 18. In Fig. 9, as well as in 1',

will readily beiseen; that these-two; strapsll7 and) 18; are arranged 1n. planes. at r ght angles to each. other, and"; each. 1s provided.

with an end: hook-19.. adapted toengage overthe corner or edge of a block. in manner similar to. that;- of the hook L01 on. the other:

cleats, This double cleat is secured to; the;-

block by screwslor boltspassed) through perforations 20: inf each. strapa of: the eleat, and in Figs;. 1; and; 2; it: will readily beseen. thatthecleat with; its double straps. is; attached: totheend; of a block and alsotothebottom or. top of they block, as;the CLSQ2H1L be; bends 16-1 are-spaced away fromithebloclc a. suitabledistance to form a loop for; the eyes. 14001} 15,. so=tliat said: eyes will: looselyv en.-. gage :theseloo-ps. The pull rope is; provided with; a. flexible shield; 21. -to\ which; the, pulih ing. device is. applied when it: is. desired to; use theropeclainp for thepur-pose of pull:- i'ngz a rope-orcable.

llniFig. 10, the blocks;1%,2* l1aite a-=grooue1- 3 extending throughthe face of each,v but in this instance the groove is. of equal: depth. throughout the. length of the block; How-i ever, the face, r of the, block; is curved; or undulating, and. by; this. means. the: same effect is attained as when; the groouesfareof; varying depths: as. in. Figs. 1: and; 2..

In using therope clamp; it is. opened'iback,

as; shown in; Fig. 2 with the; pull rope. pass ing through themad] 0in1ng; eyes. ofthe. complementaryblocks and: forming a; hinge,

This. arrangement of rope and: eyes insuress.

against; loss of theblocksor displacementiofi the same, and: forms a con venientgmeans; of opening or detaching; the clamp from the: wire or cable. hen.- the clamp is. to heap plied,.the wire-or cable is laid in the groove:

4,.then: theblack l. is folded over-0n top: of: the wire: orcable with, thegroove 3 fitting;

in close frictional contact. The end 13 of the wire is then passed under the two hooks 9on the block 2. The clamp is now in position foruse, and the power is applied at the flexible joint or shield 21. l/Vhen the power begins to draw on the pull rope, it will readily be seen that the slack is taken up in the

portions

12 and 13, the pull rope is drawn taut,- the-two blocks are consequently made to grip the wire or cable 5, and the position onthe wi'reor cable-g The'curve or undulating formation. of the grooves as def. scribed assists in holdingsthe wire or cable and preventing slipping. It will: readily be seen that thedevi'cemay be adjusted to any point or position; on the wire or cable by device is thus securely and rigidly held; in.

slacking the pull rope, and; ifid'esired, the

device, may be readily: opened lifting or withdrawing: thep ortionx 131 of:'t he pulliropei from the. two shocks. 9, 9":v Then making; a. pull if it is found-ithat the device-.isnot lo:

cated in the proper position, the strain on. the pull rope-is released; and then. thexclarnpmay b d-j usted; by slipping! it. backwardior forward on the wire or cableuntil the proper position is found; The friction. or-

pr e i n o fi gloored blocks on? the. wire 0 gable-is: positisteand: direct so that. thereiis. no: likelihood; of the-1. deviceishp i and damaging the wireior cable by hearing or. brealnngthestrands;

From the above description tHkQIL l ILCQIIQ neotiom with. my; drawings. it. is: apparent that I; haveprovided a device. which; 1s.

facile in manipulation, isi-economical-t and; elftc1ent 1111 Operation, which. w1thajl;pro.-- vides a. devicethat is comparatmely; perfect,

and performs its functions in a highly: c0m= mendable manner.

lclaim:

A; hinged. rope clamp; a. pair ofa'blocks and: a pull; rope attached: to; the.=. end ofeachy. cleatson. each block: hating-eyes. one side of" the clamp; through. which. one end: of; the pull ropeis permanently: passed, and; other cleats on, the blocks hauingqalternating: eyesv and.- hooks over which the other; end. of; said; pulle rope nlay be? detachably: engageda.

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

SAMUEL, C, Witnesses; 1

L., DIQKSONQ. J=.. MARGARET. Sworn.

Copies of: this patent. may-be ohtaineijor; fire-cents each, by addressing{ the, Commissioner 0fEBatents,.

' Washington, 1);,05