US2615402A - Cable grip - Google Patents

Description

QCt- 28, 1952 E. T. CHAMBERLAIN, JR 2,615,402

CABLE GRIP v Filed July 11, 1,951

Patented Oct. 28, 1952y l CABLE GRIP Eclw'ardvT.` Chamberlain, Jr., Hanover,l\l. 4H. y y Application July 11, 1951, Serial N0. 236,250 l Y 6 claims. (o1. 1011-202) This invention relates to cable grips and has been developed more particularly to meetr the requirements and conditions presented to a skier in gripping and releasing the cable of a ski tow. Such mechanism must be capable of a rm grip and be easily and quickly releasable, must be lunaffected in itsy operationv by the presence of snow or ice, must not injure the tow rope or cable, and must be capable of withstanding considerable ,stressy -and abuse.

-f To these ends the gripping-effort upon, the tow .rope or cable is produced, in accordance .with

this invention, preferably, `by a plurality of ,rope loops arranged togrip the cable, and the more .tenaciously theheavier the stress exerted thereon, the loops beingcarried by a pair of blocks maintainedv in lassembled relation during use but readily disconnected when desired to release the grip. by opening-the loops. D

For a complete understanding of this i vention, reference may be hadto the accompanying drawings in which :Figure l is atop plan viewof a gripembodying the invention, shown in gripping positionand connected to a belttobeworn by a skier.

, Figure 2 is a sideelevation partly broken away Figure 6 is'a view similar to Figure 1., but-show;-

'Figure .18.is asectional view similar to FigureY perforations 3 and 4, when the blocks arel in the superposed relationship. shown ,in Figures 1', y2 and 3, being substantially parallel to .each other. Between the blocks 2jandv 4 there is left lengths of strand material at6 veach of which may form a loopengaging substantially entirely around the' tow cableor rope 1 as shown in .Figure 3, or. by displacing the blockl vinto the positionjshownin Figure 4, the cable may be released .from 'the strand -materiaLthe loops then being open.'V In gripping position the` block 2`loverlies the block rI as shown in 4Figures 2 and 3 and when the blocks I and 2 arel held in thispositiomthe cable may be gripped-by tightening the loops 6 therearound.V Y

vThe intermediate portion 8 v`ofbeach rocked .downwardly into the full line position' shown in Figure2and be retained in s'uc'zhposition. In Figures 1, 2 and 5 it will be seen thatthe free endv ofthe locking bar I5 can enter-'a slot 20. in-a'portion 2| upstanding from' the block?! 'I .-'L'but showing the grip parts released'fromtthe f cable.. .Y

Referring rst to the construction rshownin ,Figuresl to' 5, at I and l2v are shown'a pairof blocks; :One of these blocks, as2,"has,a seriesl and when itfhas lso entered, it overlie's` the block V2 and prevents it from Vbeing Alifted out :of `posi-"- tionin such a way as to open upthe loopsll.' .1 Meansfor releasably holding the retaining -bar I5 in'lo'ckingposition comprises the hingedflatch block '2. .froml -.the space. between the member'sff.IfI

and 2 I, one end of the recess formed thereby and into which the. block 2 engages 'may.,b'e}.formed sharply beveled as-.at12-5. .The inner. edges offnthe blocks I and 2v where they. make contact with'the loopsy are. arranged concaved as. shown; `the cons Cavity 2l of the' block I; l'extending lforathcrfull iengtngtnereo.: andrthrough the lower :portions f of the parts I 'L ,andfzzl :andsthe fblockz Zzis: 'pr'ovided withfafzmatinggroove .28: 'Both/portions the gripping strands with the ring 9 tends to y equalize the pull exerted by the two loops 6 of each strand. As shown there are four strands,

each one having two loops passing about the cable 'I and the'intermediate lportion of each engaging around the ring 9 so that the pressure is substantially equalized between the loops ofthe same strand and between the loops of the -two strands which have been shown herein.v It is, of course, evident that morev or less than' four loops could-.be employed where found desirable.

l'nfoperation. the skier. associates the blocks around the :cable 'l by placing theblock 2 in Aproper. positionon thev block I with the various strand'loo-psengaging about .the ski tow` `cable 'and' while insuch position .the `latch .bar l'5 is Y.broughtdovv.:o..into position. toprevent the lifting of -theblock 2V and the release latch 22 is pushed thereoverinto vthe full .linerposition shown in l Figure' 2. =..'Ihe. gripper is nowgripping the tow calble and the load impar-ted thereto by thev drag of l'the. 'wearer'of thebelt Il acts to tighten .the strands about. the tow cable, ,the greater. the -i pull or lag of the skier, the greater being .thetenacity .osthe grip exerted onfthe towrope: or cable. by the. vstrand loops 6. Whenythef skier desires. to detach himself from thecable; itis only ynecessary'for. him to release thellatchj22, ,moving it from the full to the dottedlinepositionofFigure 2;. lThisl releases thev bar" I'5 andfpermits the bloclcfZetodrop out of its superposed relationto thehlock l -as showninligure 4'.. whereupon all grippingon' the cable." is released.

yInfFigures'G to 8v amodiicationisrshown' in Y which,` the strands. .which grip th-e cablesare: ar-` ranged 'independentlyy of. each other, one such strand. having a yknotted end portion 5 which anchors the strands' in one ofthe blocks, theA intermediate :portion ofthe strand passingthrough thesperforatioir in the other block and itself. being anchored in.- a. third block 30, as. by; thenknots 3 hat 'the opposite ends. of thel strandswhich pass through thejperforations 32 in the ,block .36.

With this'arran'gement the pull onthepblock 30, y

by reason-of its ring; connection. at 33.fw-ith, .the skier'sf belt,; will, cause each of the strand-f.` materials to take. itsownaloadwithout muclrreference' .tofthe proportions. taken by the. other strands..A 2 I In theseviews, also, a different typezcf'locking mechanism to retain the blocksfin -`gripping 'po-f sitionis illustrated; As there shown. the: lower block la through which the strand slidably `Apasses is provided with uprightend portions .I6a .and'f2ll a; each having f'xed. therein; aescrew eye 13.5:y .Af.:.locking..pin; 3.611 having a; hand grip 31 at onesendrmayebe :inserted through theeye'sof. the screw eyes .35:.fand act as"a.:keyjto prevent. the :block Zat-from' being .pulled away from the lockingiposition shown in 'Figure 7 to release position shown in Figure; .Y The third block- 30A which is vtheloops.'Sasabout the cable. so.` long .as the key member 36 is in the position sho-wn in Figure 6.

By pulling this member 36 out from the screw and modifications may bemadewithout departy ing from its spirit or scope.=

I claim: 1. A cable grip comprising a pair of blocks,

' a strand having one end portion fixed to one of v said blocks and extending slidingly through the Y other of said blocks and presenting a loop between `said blocks adapted to partly enclose and grip a. cable when said blocks are in predetermined relation to each other, means engaging said stranden the opposite side of said other block from said loop for exerting a pull thereon to draw said loop about and grip said cable. thereby when saidblocksv are in said predetermined relation, `and means for releasably holding said blocks in said predetermined relation.

2. A cable grip comprising a pair of blocks, a strand havingv one end portion xed yto oneiof said blocks and extendingslidingly through the other of said blocks and presenting a loop between said blocks` adapted to partlyenclose and. grip a cable when said blocks are in predetermined relation to each other, means'lengaging said' strand on theopposite sideof said other block from said loop for exerting a pull thereon to draw said loop about andgrip said cable thereby when said blocks are in said predetermined relation. and means for releasably holding saidablocksfin said predetermined relation,.said blocks .having recessed side faces with which said loop mayA engage when said blocksy are in. said predetermined relation.A

3. A -cable grip comprising a. pair. of blocks. a plurality of strands each having one endfportion anchored in one of said blocks. andhavng an'. intermediate portion slidable relative` to the other of said blocks, means for releasably holding said blocks in face to face relation withy `the strands between said blocks forming loops .which may engage around a tow cable,.a third block to which the other end portions of said strands-y are engaged, the means for securing the saidthird block to an article ofwearing apparel.. .f I

4. A cable grip comprising ajpair of blocks, a strand having an end portion anchored. in one of said blocks and havingxanl intermediate: pora strand. having anjend portion anchoredin one of saidlblocks and having an'intermedia'te portion slidably carried' bythe otherofsaid blocks', one .of said blocks havingmeans for'locating the other of said blocks zin endwise superposed'rela'- wtion thereto with said strand forming a loop between said blocks. adapted. to'enclose andwgrip a'cable, one of said blocks having albarfpivoted at one end thereto and` adapted to overl'ieiland retain the other of. said blocks in said relation,

'a' latch. member pivote'd' to said one blocklforreof said blocks being longervthan the other and having a pair of eye members spaced to permit the other of said blocks to pass therebetween,l a key removably engaged in the eyes of said eye members and holding said other block against said one block in said relation, vand means for tightening said loop about the cable. Y

EDWARD T. CHAMBERLAIN, JR.

No references cited.

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