Патент USA US2406253код для вставки
2,406,253 Patented Aug. 20, 1946 - UNITED ‘ STATES PATENT OFFICE .FRICTION-TIPPED BELT BLOCK Paul B. Reeves, Columbus, Ind” assignonto Reeves . Pulley Company, Columbus’, Ind., a corporation of Indiana Application October 1, 1943,.Serial‘Noi 504,541. 2 Claims. (Cl. '74‘—236) 1 , The .present invention relates to‘ belt blocks, and .more ‘particularly to thattype. of belt block which is used to provide. transverse stiffness in connection with agpulling web which is inherent ly transversely ?exible, and which is provided, at its opposite ends, with allochirally inclined sur faces to which are. suitablysecured friction pads for cooperation with .theiinclined surfaces of V pulleys. _ I‘ , , Theprimary object oftheinvention is to pro~ vide a» suitable metal ‘block of the type here un der consideration. A further object of the in been attempted; but standard commercial prac tice has been to nail andglue a pad to each. end ofeach section of each block.. .. There areobvious disadvantages to such a con ‘.struction,. including the. necessity ‘for separately securing .four pads to the ends-of the two sections ofeach. block asembly, thedit?culty of perform ing .thev nailing,.operation, the impossibility of bringing thecorrespondingyends- of the two sec tionsof woodenblockintotrue coplanar relation, andthe- fact that the. nail heads will eventually beexposed by padwear. , I V I 7 By the presentinventionl believe thatI have overcome‘not only the mentioned dif?culties, ‘but the friction pads to theopposite- ends of such a 15 manypif not all,-of the other disadvantages vof the stiffener-blockstructure which has‘been used block... A» further object of ,thetinvention is to according to standard practice in the past; ' provide-a novel and ef?cient means for securing Referring moreparticularlyato ‘the drawing, it such a block. to~a~be1t body.‘ Further objects will be seen that I;have illustrated a-fragment of-the-inventioni-rwilleappear as the description vention is. to provide,_.in connection with such a block, novel and effective emeansffori securing proceeds.v ' > I, ' of a belt body Ill of any standard construction, togetherwith a ‘sti?ener block assembly, indi cated generally byrithere-ference vnumeral I I-, op lated objects, myinvention may be embodied.. in erativelyrassociated therewith; The assemblyv II theliform illustrated, ml the accompanying draw includes a main- body element (or beam l2 which ing, attentionbeing called to the‘fact, however, that the drawing is illustrative ‘only, and that 25 is formed atits opposite ends vto provide allo chirally angularly‘ related faces I 3' .and- I 4.~ As change may bermadein the speci?c construction is clearly to bewperceived- from an inspection of illustratedand ‘described,’ so long as: the-scope therdrawinglthe faces: I3 and M are equiangll of the appended claims is not violated. , 1 ; d To theaccomplishment ofthe above and, re ‘Fig; l is a top plan view of a sti?ener block, ;» \ constructed in accordance with the present in vention, and associated with a section of a belt body; larly inclined inwardly-and- towardieach other. The angle of inclination selected is substantially the angle of inclination of the faces of the V ‘ pulleys with which the belt is to be used. line 2-4 of Fig. 1 and looking in the direction Since the faces l3 and I4 are, in all respects, allochiral, only one will be described. Each of of the arrows; with a vertically extending ledge or lip or blade _ Fig. 2 1s a section taken substantially upon the Fig. 3 is a bottom plan view of the illustrated such faces is provided, at its right-hand edge, I5, which is undercut as at I6; and each of said faces is further provided with a second, sub stantially parallel, similar ledge I'I, undercut as main block body; Fig. 5 is a section taken substantially upon the 40 at I8, adjacent its opposite edge, the ledges I5 and I1 facing each other in the manner clearly line 5-5 of Fig. 2 and looking in the direction illustrated in Fig. 4. Each of the faces I3 ‘and of the arrows; and I4 is further provided, adjacent its upper edge, Fig. 6 is a view similar to Fig. 4 but showing a with a similar ledge I9, undercut as at 20, and friction pad in place upon the block end. extending in the direction of belt movement. It stiffener ‘blocks, intended for the purpose for will be seen that the line of the ledge I9 inter which the device of the present invention is in sects the substantially parallel lines of the ledges tended, have of course long been used in con I5 and I1 and, in the preferred embodiment of nection with transversely ?exible belt bodies. The standard construction, however, has always been 50 the invention, those lines willintersect substan tially at right-angles. a two-piece wooden block, the two block pieces A pad 2| of suitable friction material and of being clamped upon opposite surfaces of the belt desired con?guration, is adapted to be asso body byvmeans of bolts passing through the two ciated with each of the faces I3 and I4. The block sections and the belt body, and nuts set dimension of the pad 2|, in the direction of belt ‘upon the bolts. Various means for securing fric 55 movement, is slightly greater than the distance tion pads to the ends of the block sections have _ embodiment of the invention; Fig. 4 is an end elevation of one face of the 2,406,253 K, J. \h .. .1; a“: _.v ‘ between the. ledges l5 and I1, and slightly less shifted toward and away from the wall 26 of the than the distance between the bases of the un socket 23, and will cooperate with'said wall 26 dercuts l6 and IS. The faces l3 and I4 being to clamp“ the block assembly in ?xed positionj unobstructed at their lower edges 22, it will be upon a belt of any thickness within a consider- ' clearly perceived that the pads 2| can be laid able range. The closure 3| is formed with one upon those surfaces, adjacent their lower edges or more smooth bores 34 adapted to register with l 22, and then can be forced upwardly, sliding upon a like number of perforations 35 preliminarily the surfaces 13 and [4, in such a fashion that formed in the belt body “Land with alike num the ledges l6 and I‘! will cut grooves in the ber of tapped holes 36 inlith’e beam-112, for the leading and trailing edges of the pads 2|; and 10 reception of clamping bolts 31, whereby the clo ' it will be further perceived that'the pads may be‘, - so strongly forced against the sharpenedledge~ I9 that said ledge will be embedded in the upper edge of the associated pad. Thus,- after'the pad has been forced into position, it ‘will be seen that the pad material will overlie vand. underlie each of the ledges l5, l1, and I9. sure 3| can be drawn into clamping relationship with the belt body I0. I claim as‘ my invention: 7 1. For ruse-with. a transversely-?exible fbelt is body, a'stiffener block comprising a rigid main body formedwith a socket adapted to receive a portion of said belt body, said socket being de A suitable glue or cement will be applied either ' ' ?ned by opposite- end walls spaced from each2 to the inner pad surface or to the blo,ck;face,‘_or other a distance greater than the transverse di- ‘ to both, before the. pad is forced into place. 20 mension of the belt with which said block-is 1 For facilitating the association .of the block V to beused, asubstantially continuousvbasewall of the, present invention with the belt body,y_I joining said ‘end walls, I and.‘ a ‘pair _'0f'Wa,11S._‘6jX form the inner surface of thebeam £2 ‘to pro» tending, respectively,‘ from said end walls to, vide a socket 23 which is de?ned by end walls ward each other insubstantial parallelism with 24 and 25,'sp_aced aparta distance somewhat 25 said base_wall,,_said last-namedwalls terminate’, ' greater than-the transverse dimension of the ing at point- spaced from eachother ‘a distance belt with which the block is to be associated, a slightly ‘less than said belt dimension, a closure for saidjsocket receivable betweenthe termini ‘of i substantially continuous base wall 26>joining .the end walls 24 and 25', ‘and a pair of further walls said last-named walls for retaining said'belt body _ 2'! and 28 projecting toward each‘ other, respec portion in said socket, and means for securing tively,.from the end walls 24 and;25,7in substan- " said closure in place inisaid socketin clamping tial parallelism with the basewall 2s, The walls engagement with the ‘said belt body portion. _ 2.? For use with a transversely-?exiblev belt 21 and 28 terminate at points spaced from each other a distance slightly less than the transverse V body, a stiffener block ‘comprising a rigid'main vdimension of the belt with which the block is 35 body formed with a socket adapted‘to receive to be associated. Thus it will be seen that, by ' a portion of said belt body, said'socket being dc: slightly transversely distorting the belt body, the ?ned by opposite end walls spaced from each ' opposite edges of thatbody can be inserted be tween the wall 26 and thewalls 21 and'28, re other a distance greater than the transverse di; mension of the belt with which said block is to v spectively,'whereby the beam I 2 is lightly held in 40 be used, a substantially continuous base wall ‘join ‘ position, upon the belt bodyj , V ' ~ ing said end walls, and a pair of walls extend '7 The'wall 21 merges in a vertical wall 29, ‘sub stantially perpendicular to’ the wall 26, and fac i-ng, respectively, from said end walls toward each ing' inwardly; while the wall 28 similarly merges wall, said last-named walls terminating 'at points ' in an inwardly facing vertical wall 36. A 010 sure plate or bar 3| for the socket 23 is formed ' other in substantial parallelism with said base 45 spaced- from each other a'distance ‘slightly less at its opposite ends‘ with surfaces 32 and 33 adapted to mate,'respectively,'with the‘walls' 29 and 30, so that the closure 3| ,‘ being slidably received between the walls 29 and 30, can be 60 than said belt dimension, and means engageable with said main body and with said belt bodypor tion to hold said‘ main'body in position’ on said belt ' body. i _ y > a PAUL B'REEVES. a r '