Патент USA US2110575код для вставки
8, 193. 2,11,575 v, H, HARBERT BRAKE HEADWEAR RECEIVING ELEMENT \ Filed Dec. 16, 1932 2 Sheets-Sheet l 6.. (Witnesses - WW. w f; arch 81%, 1938. V. H. HARBERT BRAKE HEADWEAR RECEIVING ELEMENT Filed Dec. 16, 1952 ZJTMSW 2 Sheets-Sheet 2 Inmfentor 2,110,575 Patented Mar. 8, 1938 UNITED" STATS AT T OFFIQE 2,110,575 BRAKE ‘HEAD WEAR RECEIVING ELEMENT Victor H. Harbert, Chicago, 111., assignor to Illi nois Railway Equipment Company, Chicago; 111., a corporation of Illinois Application December 16, 1932, Serial No. 647,579 13 Claims. (Cl. 188-242) My invention relates to means adapted to be applied to the standard type of brake heads, lugs to permit easy application or reception of the shoe lug therebetween. whereby the wear which is encountered by the As the shoes are of harder metal than that of the heads, the constant vibration or up and down movement of the shoe during car operation and a brake application causes the head lug l2, espe cially, to soon become excessively worn. As a shoe supporting lug of the headwill all be taken 5 care of or absorbed by my improved wear receiv ing element made of metal best adapted for such purpose. My invention contemplates means which may be easily applied to a brake-head and which at 10 the same time can be removed and replaced should occasion require; the element involving integral result, the utility of the head is destroyed and replacement of the entire head required; or formation of new lugs by welding made necessary. 10 This, of course, also results in car service loss portions whereby the element will be firmly locked on the brake-head lug; the element at the same brake conditions. 7 N time affording a binding contact with the usual ‘15 shoe locking key. , The objects and advantages of my invention will be fully understood and comprehended from the detailed description of the accompanying drawings, wherein: Figure 1 is a side elevation of a brake-head and shoe locked in place and provided with my im proved element. Figure 2 is a front or face elevation of the brake-head‘ with the wear receiving element 25 shown in Figure 1 applied to the supporting lug. Figure 3 is a cross sectional View of the brake head lug and wear receiving element shown in Figures 1 and 2. Figure 4 is a perspective view of the supporting 30 lug portion of the brake-head. Figure 5 is a perspective view of the element adapted for'use on the brake-head lug shown in Figures 1 to 4. Figure 6 is a perspective view of a modi?cation 3 01 in the brake-head lug. Figure 7 is a perspective view of. a modi?ed form of the wear receiving element adapted for application to the type of lug shown in Figure 6. My improved wear receiving element is intended 40 for the standard brake-heads and shoes at pres~ ent in use and is especially intended for applica tion to new heads, although it may be equally as well applied to brake-heads in use which have not become excessively worn. 45 Brake-heads, intermediate of their ends, are provided with a pair of spaced apart lugs as shown in Figures 1 and 2 at it) and BI, to receive the shoe lug i2 therebetween, see Figure 1. These three lugs have slots disposed vertically therethrough;-~the slots in the head lugs being shown at it in Figure 2;—~to receive the usual shoe locking key M. The brake-heads are usually of cast metal con 55 struction with more or less tolerance between the and hence increased expense due to defective 1 My invention contemplates the provision of a wear receiving element l5, interposed between 15 the lower face of the shoe lug l2 and the wear receiving upper face of the supporting lug ll of the brake-head; namely an element which may be made of heat treated or suitably hard steel adapted to resist the wear generally caused by the shoe lug; while at the same time providing a ?rmv or snug ?tting relation between head and shoe 'so- as to eliminate the usual play between these elements. , My improved wear receiving element l5, as dis- ' closed in the ?rst ?ve ?gures of the drawings, involves a ‘rectangular metal plate of suitable thickness and of width commensurate with the transverse depth of the head lug l I. This plate I 5, of proper metal or steel, is formed ' with downwardly and somewhat inwardly bent ends 116, I 6%. As the head lugs are formed with the ends I‘! sloping outwardly toward the rear or body of the. head (see Figures 2 and 4), the plate i5 is preferably formed with the front longitudi- 1 nal side l5a of length less than the other or oppo site longitudinal side; the difference in length ‘ between the two sides corresponding to the dif ference in transverse dimensions between the forward or outer end of lug H and the rear or attached end thereof. The opposite ends I‘! of the head lug H are each provided with a cut-in portion or groove as at E8, which are adapted to receive the down turned ends l6, Ita of the plate I5. These grooves 45 I8 permit the plate to be slid onto the lug H, from front to rear. In order to lock the plate l5 against movement toward the outer end of the head-lug l I, after the plate has been completely forced into place, at 0 least one of the ends of the plate is slit in a lon gitudinal direction, between the two longitudinal sides, so as to provide the tongue 19; the tongue forming portion being made of length less than the remainder of the plate so as to terminate sub 55 2 2,110,575 stantially at the beginning of the bent portion 0 embodiments of my invention and have described the plate forming the bent end IBe. ~ In order to receive the. tongue I9, the corre the same in terms employed for purposes of de scription and not as terms of limitation, as modi sponding end of the head lug II is provided with ?cations are possible and may be made without, however, departing from the spirit of my inven tion. What I claim is: the cut-out portion or socket 243, see Figure 4, (sloping downwardly toward the end of the lug). The downwardly bent ends I6, use of the plate I5 are intended to ?rmly engage in the grooves I8, E8, to hold the plate against up-and-down move ment or play; and after the plate l5 has been ?rmly driven or slid onto the lug II, the tongue I9 is then driven into a declining position as shown in Figures 3 and 5, namely into the socket 20. As the tongue I9 is substantially of the same width as the socket 2B, the tongue will contact with the side walls of the socket 2B and prevent forward sliding movement of the plate. The brake-head is then ready to receive the shoe-lug I2; the plate I5 being provided with the key re ceiving opening or slot 2| adapted to register with the slot IS in the head and a slot which is formed in the shoe-lug l2. In Figures 6 and '7 I illustrate a modi?cation of the invention, with the brake-head lug Ila 25 having its ends provided with similar grooves I8, I8, as in the previously described construction. In Figure 6, the opposite end walls of the shoe fastening key receiving slot l3, are each provided at top with a forwardly declining socket 22, so as 30 to provide an abutment or shoulder at 23. The plate for this construction of head lug is shown in Figure '7; the plate 24 being practically of the same general construction as the plate I5, except that the downwardly disposed ends 25, 25 35 are left integral throughout and not provided with the end tongue I9. Plate 24 is preferably made of tempered spring steel; and at opposite ends of the shoe key receiv ing slot 26, partially severed portions or tongues 40 21, 21 are provided. 45 50 55 60 - The metal is out so» the tongues 21, 21 may b bent downwardly toward the shoe or forward longitudinal side of the plate in order that the free downwardly disposed ends of the tongues 21, 21 will engage the shoulders 23, 23 at opposite ends of the key slot I3 in the head lug I la. With plate 24 formed of suitable spring steel, the plate may be driven onto the head lug Ila, with the ends 25, 25 seated in the lug grooves I8, I8; the ends of the tongues 21, 2‘! riding across the top of the head lug IIa until the slot 25 of the plate registers with the slot I3 of the head lug, at which time the tongues 21, 2'! will snap down into the inclining sockets 22, 22 and abut against the shoulders 23, 23. The bent ends 25 and the tongues 2'! will hold the plate 24 ?rmly on the head lug against movement. As is apparent, the plates I5 or 24 will not only prevent undue vertical movement of the shoe, but will absorb all wear heretofore caused by the shoe 1. A brake-head wear receiving element com prising, in combination with a brake-head lug having a key receiving slot and grooved ends; a 10 plate coextensive with the upper face of said lug and having a key receiving slot, the ends of the plate being disposed downwardly and inwardly to engage in the grooved ends of the lug. 2. A brake-head wear receiving element com 15 prising, in combination with a brake-head lug, opposite ends whereof are grooved from front to rear; a plate having downwardly and inwardly disposed ends adapted to enter and form grip 20 ping relation with said grooved ends of the lug. 3. A brake-head wear receiving element adapt ed to be disposed on the upper face of a brake head lug provided with a socket in its upper face and comprising a plate provided with a downwardly ?exible tongue adapted to engage in 25 said socket and thereby secure the plate against displacement. at. A brake-head wear receiving element adapt ed to be disposed on the upper face of a brake head lug and comprising a plate having down 30 wardly disposed ends adapted to form gripping relation with opposite ends of the lug and having a downwardly ?exible tongue adapted to provide locking engagement between the lower face of the plate and the upper face of the head lug. 5. A brake-head wear receiving element com prising a plate adapted to be disposed on the up per face of a brake-head lug and provided with downwardly and inwardly disposed ends and a downwardly ?exible tongue intermediate of the 40 ends of the plate. . 6. A brake-head wear receiving element com prising a flat plate adapted to be disposed on the upper face of a brake-head lug provided with a socket in the upper face, said plate being provided 45 with a bendable portion adapted to engage in the lug socket so as to prevent movement of the plate toward the outer end of the head lug. '7. A brake-head wear receiving element adapt ed to be disposed on the upper face of a brake 50 head lug, comprising a ?at plate provided with downwardly disposed ends, the plate adjacent one of the ends being longitudinally slit to provide a bendable tongue. 8. A brake-head wear receiving element adapt 55 ed to be disposed on the upper face of a brake head lug, comprising a flat plate provided with a brake-shoe key receiving slot and a portion of the plate at the end of the slot partially severed to provide a downwardly ?exible and forwardly pre 60 and as a result enhance the life of the brake head. In order to more rigidly hold the shoe in snug relation with the head, the transverse width of 65 the slot 2| in plate I5, and slot 26 in plate 24, is preferably made less than the width of the slot I3 in the head, so that the shoe fastening key sented tongue. I4 will bear against one side of either slot 2i or 26 and not only prevent wear in the wall of the 70 slot I3 in the head lug, but also provide a greater binding relation with the key, as the forward wall of the plate slot, 2I or 26, is arranged to be dis— 10. A brake-head wear receiving element adapted to be disposed on the upper face of a posed slightly rearward of the forward‘ edge of the slot l3 in the head lug. I have shown what I believe to be the simplest 75 9. A brake-head wear receiving element adapt ed to be disposed on the upperface of abrake-head lug, comprising a flat plate provided with a. brake shoe key receiving slot, with portions of the plate 65 at opposite ends of the slot provided with down wardly flexible and forwardly presented tongues. brake-head lug, comprising a flat plate provided 70 with a brake shoe key receiving slot and with a downwardly ?exible and forwardly presented portion, the ends of the plate being bent down wardly in inwardly inclining directions. ll, A brake-head wear receiving element com— 75 3 2,110,575 prising, in combination with a forwardly tapering lug, while a portion of the plate is partially sev break-head lug whose opposite ends are provided ' ered to provide a bendable tongue adapted to en with grooves disposed from front to rear ‘and the upper face of the lug providedwitharecessformed to provide a vertical shoulder at the forward side of the recess; a flat plate having downwardly bent ends converging toward the forward longi tudinal side of the plate and adapted to engage in the grooves of the head lug, a portion of the 10 plate being partially severed to provide a bend able tongue adapted to enter the lug recess and abut against said vertical shoulder. 12. A brake-head wear receiving element oom~ prising, in combination with a forwardly taper 15 ing brake-head lug whose opposite side walls are each provided with a groove disposed from front to rear and the upper face at one end of the lug provided with a declining recess; a flat plate whose opposite longitudinal sides are of unequal 20 length and the ends bent downwardly and con verging inwardly toward the front longitudinal side of the plate, said ends being adapted to slide lengthwise of the grooves in the ends of the head gage in the recess of the head lug. 13. A brake-head wear receiving element com prising, in combination with a brake-head lug tapering forwardly and withthe opposite sidewalls each provided with a groove extending from front to rear of the lug, the lug having a key receiving opening therethrough, with the end walls of the opening on the upper face of the lug having re cesses sloping downwardly toward the front; a?at plate whose opposite longitudinal sides are of un equal length and the ends of the plate bent down wardly and converging inwardly toward the front side of the plate, said ends being adapted to slide lengthwise of the grooves in the lug sides, said plate having‘ a key receiving opening adapted to register with the opening in the lug and portions of the plate at opposite ends of its opening pro vided with tongues sloping downwardly toward the front of the plate and adapted to engage in the lug recesses. ' VICTOR H. HARBERT.