US2358534A - Spliceable belt - Google Patents

Description

Sept. 19, 1944. w. R. PERRY SPLICEABLE BELT Filed June 21, 1941 l I INVENTOR. WzZlzau1Z.P;/ m

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ATTOZNEYJ Patented Sept. 19, 1944 l Application jaiieli, 194i,- s am. 299314 The present invention relates to :power trans mission belts, and more particularly to th at general. type of belts which comprisesa bod'y, ribbon, or strand having considerable tensile strength but relatively little lateralrigidity, and aseries ity mounted upon said body in; longitudinally spacedlparallel relation. .Belts of this charac-- of transverse blocks of considerable rigidter are primarily intended for use in association with V-pulleys, or with. one V- pulleyand one fiat-faced pulley; and the functionof the blocks,

of course, is f to effect adrivin connection with the ang'ularly related v faces offthe V-pulleys and to. transmit force between those pulley faces and th e longitudinally strong strand or web of the body portion. a p v Broadly, the primary object of the present invention isto improve :belts-of the characterabove.

described. One phase of the invention .isjthe provision of such a belt inwhich each block is an integral unit completely enveloping the -belt body orstra-nd and secured to; the same without the use of extraneous fasteninglrneans More particularly, such a block is preferably formed of hardened moldable material, being molde'difi place upon the strand while in plastic condition, and subsequently hardened in any suitable manner, so that it will adhere to its position on the strand. v l

Another phase of the invention has to do with the provision of splicing means during the forv mation of the body strand. According to the present invention, the body strand consists of a continuous piece of material arranged a. plurality of parallel runs merging with each other in loops at the opposite ends of the belt, the loops at one end of the belt being registrable with the loops at the'other end of the belt, Where= by means may be threaded through loops at one end of the belt and registering loops at the other end of the belt to form a splice. -Still another phase of the invention has to :do with the provision of a reinforcing blockfor association with the splicing means. A, Further objects oi. the invention will appear as the description proceeds. s I v 7 To the accomplishment of the above andrelated objects, my invention may .be' embodied in the forms illustrated in. the accompanying drawing, attention being called to the'faet, however, that the drawing is illustrative only, and that change may be made in the speeine oiistifid tions illustrated and described, so long as the scope of the appended claims is notviol'ated.

,all'el to the first pass abbut constructed in----aceordance with the present ine om. -..L y I x J v 'Fi-g. a transverse section through -a;splice blockunit; associable with the form oi ebelt illus= 3 line 3-3 of 2 ofthearrows; I

Fig. 4 i5 9, iragmentary plan view of the splice block ofFigvz; M 1 v p j 5 is afrag'mentarycplan view of a different form of belt constructed in accordance with H substantially on the is v a section taken and looking in the direction thepresent invention an. e t n sociable. with the belt oi Fig. 5, parts" being broken away forclarity oilil'l us trationn I -.Fig. 7.;is a section takensubst'antially on the line 7-4 of Fig. 6 and-looking in the direction ofthe arrows 1 Fig {8 "s n end. elevation of the. splice i ra me ta l ng d a ee through the interlocked. ends of a further form of belt constructed-in accordance with the present-invention;;and j .1 V Ei 10.15" a tr 'ns'verse section throug'h a stiflener block associated with a belt of the characterillustrated'ini igs. *1 or 5.- 1 3 Referring more "particularly to Figs; l-to 4, -the of a splice' block unit asblock ektndffi'ofii apoint between the rods H and I2 audible-passed around the rod ll to form a loop HI. Ittheneiitends in a second run I02 parfill from the rod to the rod 12-,- being passdaboutthe'rod l2 to form aloop 121.. It then ei'itends; as run 1113, back to the .rod lll, -alid is-lpassed about saidrod to forth amepuz'; thence continuingas run Hi l to fierce l2 as looip I72; andso on until a. fififiiclfit 'w'idth has been, produced, as

at the 166p H3 about the rod II, whence the cord. extends as run 105 to and-about the rod 2 wee -mop [2 3, and thence, as run-I116Yback to a point betweemtwo rods 1 and J2. 'I'he free ends or therunsi-lll'l ana 'IUB mayte secur a in pnee'maay-desire inaiinnarid if desired, the V c peted f r 'fibbo'ri Jmay..:n sw be treated N red' iiate'rial whine the 'gjdja i; meager-1e. l

'It ivill be "seiiiuiat at atti e' otereutiii e1 reference numeral Hl indicates generally a belt maybe made of any esir e' 'cord e t l ke-111 1 mdlicin be secured thereto by any suitable clamping .1 means; but preferably stiffener blocks willbe applied to the belt body as integral units} each completely enveloping a sectionpf'the belt body; Any suitable moldable andghardenable material.

may be used; and I have found hard rubber to be one adaptable material for thi purpose. The,

rubber, in moldable conditionymay be' applied to the belt body in the desired form and subsequent;;,

ly treated to cause it to harden sufficiently to withstand the. longitudinal compressive 'ft" r c es"-'-tt which it will be subjected in use. If desiredifric tion" material '50 may be applied to each block before the hardening process; or such'i'n'aterial may be suitably applied to the end "and inner'surfaces 'after hardenihg 'of theblockmaterial; In Fig. 10, 'I have illustrated 'theftransv'er'se contour o such a block before the application of the above-mentioned friction material;

The belt may nowbe removed from th rold ssl I and "I2; and the l oqps jof' the 121' -series brought into inter-digitating' relation with the loops of the HI series; whereafter a membenlkmaygbe passed through theflregistering eyes of all of the loops of both series tojcomplete a'splice; 'I h'e member l4 may beiof "any desired material.- I

In order to reinforcefthe *splica, a block unit I5 i preferably associated therewith; The unit l5 consists of an outer member comprising a transverse beam l6 carrying at its opposite encls surfaces l1 and I8 which are: allochirally angularly relatedto a medianplane perpendicular to the plane of the belt bodyi-sd'thatfsaid surfaces will cooperate operatively with the angular sur-' facesofa I 1 secured to the surfaces l1 and 18. Theunit l5 ."mat'eriaLf such as wood, metal, plastics, and the The surfaces lT andfla continuefbelowthe beam l5 as legs I9 andfll whichfare transversely separated to provide as 'cket zlforf the recep tion of the belt; splice. The surfaces l1 and-l3 are joined by a heat-dissipatingi' fin 22, thereby defining an outwardly opening socket; The

V-pulley, Friction material '59. will he *The spliceblock 32 may spliced loops of both series a reintroducedinto f the'socket 2|, nd; thereafter a 'bottom plate '21 is associatedjwiththe upperl blo'ck unit. Preferably, the legs lflf and 2,0 are formectin.theinad iacent surfaces, withfgrooves1 23 and 2 4 f adapted to receive tongues 25 and 26 on; the opposite ends of the plate 2T; and a plurality of bolts 28 pass through thefbeam il 6, between the spliced loops of the belt; body, he intoithreaded fbores' n formedin the plate 21; wherebythe plate 21 may be drawn up toclamp'the splicegin' place in the socketrzl.

The orm of beltiillust rated l igs'ii'itofg his; prisesajb'ody 31'! similar to the body l0,'and l1 kewise made up of a plurality pf substantially parallel runs of'a continuous; longitudinally stressed the operator willmake usejof two ;'series q'fgllpstanding pins 3|. The firstrun"offcord 3 0 l ;will.

19 bf ries; andthence into of pins and around the first pin of one series to form a loop 3| I; thence, in a parallel run 302, to and around the first pin of the other series to form a loop 321 (see Fig. 6). Thence, the cord returns as run 303 to pass about the second pin of the first series to form loop 3l2; and thence back to the other series of pins. This is continued until run 304 passes about the last pin 3i to. form 10013 313, whence the cord returns, as run-305;.toiaipoint intermediate the two series of pins. Blocks l3 may now be applied to the belt body in the manner above described; whereafter,

the belt may be lifted off the twoseries of pins 3 I. It will be seen that the loops of this form of belt .lie:in planes'ssubstantially parallel to the [lathe cf jthebeltbody. To form a splice, with this form oftbelt, the loops at one end of the belt are brought into registering overlapping relation 'withthe loops of the other end of the belt, only 011911001) of the 3 series registering with each loop of the 32! series, in the manner clearly illustratedinFigsgfi, Land 8, v

"EA splice blockfunit32 foruse withthis type of 'belt'comprisfes an upper block 33 formed with angularly 'rel'atedsurfaces 34 and 35 anda con nectingbeam 3B which may be centrally relieved as, at 3'l to reduce weight; and a mating lower unit 3 ,3'*formed at'its ends to define continuationsjof the surface 34' and 35, A plurality of upstanding pins 38 is carried by on of the abovementioned'units, while thecther of said unit is formd with pin receiving sockets 39. Each of the pins 38 pa'sses through theregistering eyes of one the 3H] seriesand one loop of the 320 'seits socket 39; and the two units are clamped together-by a plurality of bolts 40 carried by the upper unit and threadedly engaging sockets in the'lower unit. 7

- beformed of any desired material; such as wood; metal, or plastics; andiifdesiredythe pins 38 may be either integral with, or

t securedto, 'elther one of the units 33 and 33'," while the other'of said'units will be socketed for the receptionfof the projecting ends of said Q illustrates a simplified form of splice. According to this form of the invention, the belt compriseslabodyg lt of cords or the like and a cover 41 of rubber or similar material. Vulcanized to be integral withethe cover 41 of an end 4|; of the belt is'a transversely arranged projection 42 extending out ofthe plane of the belt; and anji"tegral transverse block" 43 extending oppositely outof the plane of the belt and formed to"pro'vide a seat 44. The other end All] of the belt is' provided with an integrally vulcanized transverse block' 430 of rubber or similar material which-'i'sffo rnied'o'n its inner face with a'seat 420'forthereceptionof the projection 42, and withan xtensionAZladapted to lie behind the projection I 4 2'an'd to extend substantially into the plane ofytheibelt end 4|. The main body of thefbelt end M0 is received upon the seat 44 of the block'l3, while the extension 42 is received within theseat 420 of the block 430; and bolts ifi are p'assed' through the two blocks 43 and m Ifclaim my invention:

" 1. An edgeeactive belt compris ng a longitudin'ally stressedmember'looped at one end of the 1t, extending the full length of the belt to a loop at the opposite end, and returning to form a second loop at'the firstementioned end, a plurality of g b locks fof "trapezoidal cross section secured to said member at spaced points in the length of said belt, means passing through at least one loop at each end .of said belt to splice the ends of said belt, and block means operatively associated with said last-named means to reinforce the splice.

2. A belt comprising a continuous strand arranged in a plurality of substantially parallel runs joined by loops at the opposite ends of said runs, means threaded through loops at one end of said belt and through loops at the other end of said belt to form a splice, and means operatively associated with said last-named means to reiniorce said splice.

3. A belt comprising a continuous strand arranged in a plurality of substantially parallel runs joined by loops at the opposite ends of said runs, said loops lying in substantially parallel planes substantially perpendicular to the common plane of said runs, and means threaded through all of said loops to form a splice.

4. A belt comprising a continuous'strand arranged in a plurality of substantially parallel runs joined by loops at the opposite ends of said runs, said loops lying in substantially parallel planes substantially perpendicular to the common plane of said runs, means threaded through all of said loops to form a splice, and means operatively associated with said last-named means to reinforce said splice.

5. A belt comprising a continuous strand arranged in a. plurality of substantially parallel runs joined by loops at the opposite ends of said runs, said loops lying in substantially parallel planes substantially perpendicular to the common plane of said runs, and the loops at one end of said belt being arranged in interdigitating registry with the loops at the other end of said belt, and means threaded through all of said loops to form a splice.

6. A belt comprising a continuous strand arranged in a plurality of substantially parallel runs joined by loops at the opposite ends of said runs, the loops at each end of said belt lying substantially in a common plane parallel to the common plane of said runs, and a plurality of pins, each passing through a loop at one end of said belt and a loop at the other end of said belt to form a splicel s 7. A belt comprising a continuous strand arranged in a plurality of substantially parallel runs joined by loops at the opposite ends of said runs, the loops at each of said belt lying substantially in a common plane parallel to the common plane of said runs, and splice means comprising a. block carrying a plurality of spaced parallel pins, each of said pins passing through a loop at one end of said belt and a loop at the other end of said belt, a mating block socketed to receive the projecting ends of said pins, and means securing said blocks together on Opposite sides of said belt.

8. An edge-active belt comprising a longitudinally stressed member looped at one end of the belt, extending the full length of the belt to a loop at the opposite end, and returning to form a second loop at the first-mentioned end, and ,a

plurality of blocks of trapezoidal cross section secured to said member at spaced points in the length of said belt, certain of said blocks being provided with means passing through at least one loop at one end of said belt and with means passing through at least one loop at the other end of said belt to splice together said ends of said belt.

9. A belt comprising a continuous strand arranged in a plurality ofsubstantially parallel runs joined by loops at the opposite ends of said runs, the loops at each end of said belt lying substantially in a common plane parallel to the common plane of said runs, and splice means comprising a block carrying a plurality of spaced parallel pins, certain of said pins passing respectively through loops at one end of said belt and certain of said pins passing respectively through loops at the other end of said belt, a mating block cooperating with said first-named block to hold said pins in position, and means securing said blocks together on opposite sides of said belt.

10. A belt comprising a body made up of a plurality of substantially parallel runs of cord embedded in an envelope of binding material, a plurality of longitudinally-spaced transverse stiffener blocks associated with said body, each of said blocks completely enveloping its associated section of belt body and being substantially incompressible in a direction transverse to the length of said body, and a thin layer of relatively soft, high-friction, compressible material secured to the friction surfaces of. each of said blocks.

WILLIAM R. PERRY.

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