US1764469A - Cable grip - Google Patents

Description

B. C. RIBLET Jum: 17, 193.

CABLE GRIP Filed Feb. 18, 1929 2 Sheets-Shet 1 BYRON C. RIBLE Inventor Attorney 8. C. RIBLET jim T7, 1930.

CABLE GRIP Filed Feb. 18, 1929 2 Sheets-Sheet 2 BYRON (LR/5L5?- I movable jaw a tension spring 16is-located for the purpose of :projecting -the movable jaw to the right in Figures 7 and 8 when permitted to do so, for the release of then Jaws from the cable.

the movab le jaw aiidthe 'blo ckmovewith the V slidable bolts, nuts l8'being used on the bolts ,tbret'ain the wedge block.

At its inner, side the wedge block is fashioned with two'a'ngular wedge faces. 19 and 20 and these faces are located in spaced relation to a wear block- 21 that is securely c arried in a socket inthe face of the hanger 5. The jawsarefgripped on thecable by the a'ctibn' of a downwardly movable wedgebar 27 as itpasses in between; the bearing block wear block 21 and the w edge faces of the we d g blbck'to "draw the IIiOVable jaw tOWaId.

t e fi i T isw dss ba sh ts e'r .end a pair, of wedge "faces, 23 and 2:4, dis pi'i sed at angles" complementary to' the' two faces of the wedge block, 'so that-as the wedge tar esends o uessing grip; the

and .20will engag'ewith -a comparawq y Sl s i fiQ i I a: u d mo eme and then the face's23 and 19 will engage with a greater degree pf frictionto positively'close the grip, and this greater friction prevents the wedge bar from beingdisplaced by vlbra- 7 sons due to trayel'of the c onveyer unit: The

wedge bar is thus'iowered to close th e grip, and means are provided whereby the bar is raised when the grip is tozbe opened 'or' released.

, A-t the apparent or thewedge bar a air of I side plates 44 websites and these spaced Plat s t rm an p su i'f f h wedge bar, frame straddles a guide ;pin-25. rigid with'the trolley name, to enable the wage-bar to rise and fall without lateral v displacement. Above theguide pin apair of bolts 26 tie the plates together and tubular spacers or pipe sections-Q2 are 'interpo'sed be- 1 ftwen'ithe plates. A washer 28' mounted V on the 'outer'end-ofthepin, and a 'cotjterpin QQinTthe pin holdsthewasher lightly against the outer edges of the side plates tcpr'eveiit wbbbli-ng of the' 'We'dgeQ Fai r eel yire rr efii sse B anti frictio'n roller or wedge-roller 30 is Journaled onastud shaft 3l that is mounted "i n l'a tearing block 32; bolted withinl tlie space bsttr n th s e assed at t e pp sldeof thew'edge bar aretaining roller 33 is journaled on the stud shaft. For co-action of the retaininglever arm, and at 37cm end of the spring is connected to a part of the hanger 5. Thus the pivoted end'of the lever arm i s 's'uppbrt'ed on the hanger and one end ofmthe spring is anchored to the hanger, in

. order that the lever arm may, with a resilient The bolts are threaded at one end in-the' n ovable aw, andat their other ends a wedge blbck 17 isjsecured; it being understood that c 7 a v H V g V 'tionary ramp 38 in'Figme 1 when thereonpressure on the retaining roller, hold the wedge bar 'inplace, toprevent its dislocation.

The wedge bar is lifted'by meansof a'-sta- Veyerunittravels to the rig-ht and the wedge roller '30 rides up and alongthe ramp, andthe wedge bar on the following trolley is lifted in the'saine manner. When the roller 30 encounters the ramp and" rides upwardly as indicated, the Wedge bar is lifted and the wedge fac'es at the end of the bar are lifted to'released position in'f Figure 4. This displacement of the'lowergendjof the'wedg'e' bar permits the spring 16 to'pr'oject, the movable jaw 13 so that the traction Cable may-fall from the grip, Itwill be'understoodthat the retainingspring 8'6 hasfsufli'cient' strength to hold the wedge harin place, but has not'sut ficieiit strength to ov reome the friction of the Wedge parts and force them apart.

For lowe'ring the wedgebar to lock the grip or grip the jawson the'cable', I may employ in link'co-operatin'g with a bolt or pin e3 to'guide the vertical'swinging movement of the overhead5flgravity, ramp. Thenor'mal,

loweredpos'itionof .this'ramp is indicated dotted lines, and the weight of ,thejsus pended-ramp is sufiicientt'o-be'ar down on the wedge roller when the latter encounters the ramp; in order that the wedge bar shall be depressed to 'grippingposition; The purose of this movable ramp. is to compensate for different sizes of traction cablewith' which the grip coact's; Sometimes the diameter ofthe' cable is reduced,1 due to wear," and I sometime's'a cable of different diameter is substituted for the, original cable. This difie'r'ence is takencare ofor compensated for bytheuse of the weighted-but movable ramp.

. U suallythe gripping ramp iis'located down 1 an inclirieofthe suspension cable s'otliat'th e conveyerunit may run down theincline "a distancefs'ufiicient to insure-theimomentiim required to depress the wedge} bar andgrip the cable. In this manner the traveling unit is ripp d t th twir ng tr c io s e an unnecessaryje'rks are avoided when thegripping action'takes place.

f Having'thus fully describedmy invention,

"whatI claim as new and' desire to secure by 7 'Letters Patent is j L JIn a cable grip the combination witha "support forming a stationary aw, of a mov- ,a spaced; wedge block' rigid with themovable aw, a wedge operable between the wedge W, I block and a portion of the support,jand means: 1*10 i for Operating the wedge.

support-forminga stationary jaw, of a pair of slide bolts mounted in the support and a "movable jaw rigid with the bolts, a spaced wed'ge'block mounted on the bolts, a wedge 1 I operable between'the block'and support, and Y t, means for operating, the wedge.

able j aw slidablymounted in thesupportand 2. In a cable grip'the combination with a 9; In a cable grip ofithejwedgeit suspended from the'support, [awedgeroller f ramp, a retaining roller :journaled on" the f 1 bar, aleverQarmpivotedat one :end-onthe hanger and frictionally-engaging the retain-1 ing roller,'and a spring connecting thes fr'ee endgof the arm with saidhanger;

journaled on the -bar forco-action witha In testimony whereof Iiafiixmy signature,

I i Ina-cabhgriP e 'combinationwith a f F support forming a stationary j awl, of a pair.

#20 v s a "[the support, a jaw secured on said bolts and anexpansion spring interposed betweensaid of spaced, parallel bolts slidably mounted in jaws, a wedge block,-a wear block on the suptween said blocks. 7

support forming a stationaryjaw, of a'laterf fally movable jaw and" wedge mechanism for 1 '7 closing said jaws, said mechanism.including p a wedge bar, and resilient means fbrretitlll 4 ing said wedge bar inoperative position.

"able with the latter j aw, a reciprocable wedge roller mounted on the wedge bar.

port, and a reciprocable wedge operablebe 1 25v j p 7 214. 1111 a cable gri gipj'he combination with a v i, I, 4 Ina cable grip the combination with" a5 1; j i

v supportforming astationary jaw and a'latv erallv movable jaw, of awedge blockjmov- '35 bar and' guides therefor, and an anti-:sfrictio'n v 6'. In a cable grip the combination wit-ha hangenaboss thereon forming a'jaw,a: lat-" i it Rm s s v s anda spaced wedge block; movable with the jaw, o'fa su'pportffor the hanger, a recipro a p cable wedgebar suspended from sa1dsuperally movablerjaw supported onrthe boss mend means for depressing the wedge bar toclose said jaws. 7 {37, In a cable grip, the :combination witha hanger and a fixed jaw mounted thereon, a Q complementary, movable jaw supported on) thehanger and awedge block. movable with the hanger, a r ecipthatjaw, of asupport for rocable wedge bar suspended: from saidf'sup- 0' 1 portj fmeans' for depressingthe wedge bar, a p j V fwedg'egroller on the bar",ja r etaini ng roller 0n the bar, a retaining lever-pivoted at ,one W end to the hanger and engaging the retaining I J p roller,and-:a'spring connecting the free'end of *the retaining'leverwith the hanger.

158.]In a cable'grip ofithewed'getype,the v I combination of a supportfand'a hangersusi ipendedtherefrom, of avertically reciprocab1ec 1i I ,wedge bar suspended'from the support andif 1 me'ans'on the bar-'for co-a'ction with a ramp,

" a {retaining roller'journaledjon the'banand a springretaining leverearmmounted on: the s V j hanger'andfco-acting with said'rollertfi j 1 f combination of a support and a suspended I hanger, 01Ea'verticallyre'ciprocable wedgebar v I

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