Патент USA US2072619код для вставки
March 2, 1937. c. A. DISBRO‘W _ . 2,072,619 L'lariiSon?DiSbfow - - m ’ ~ - 6mm“, vPatented “Mar. 2, 1937 2,072,619 UNITED STATES PATENT OFFICE 2,072,619 FLEXIBLE RAIL JOINT Clarkson A. Disbrow, New Rochelle, N. Y., as signor, by mesne assignments, to Poor & Com pany, a corporation of Delaware Application March 7, 1931, Serial No. 520,902 3 Claims. This invention relates to rail joints, and has particular reference to improvements in rail joints of either the head-contact or the head free type in which provision is made for substan Cl tially uninterrupted transmission of the wave mo tion of the rails through the joint. ' The invention has special reference to a splice bar construction designed for intermittent con tact with and clearance from the rails within 10 zones spaced longitudinally of the bar, whereby, (Cl. 238-243) erence denote corresponding parts in related views: Figure l is a side elevation of a rail joint em ploying a splice bar constructed in accordance with the invention. Figure 2 is a transverse section on the line 1-1 of Figs. 1; and Figure 3 is a transverse section on the line 8-8 of Fig. 1. ‘ when tra?ic passes thereover is permitted. Thus, rail end batter is materially reduced as compared In the embodiment of the invention herein il lustrated, the rails are designated as R, R’, re spectively, and the splice bar as B, and each rail is inclusive, as usual, of a head In, a web II and a base ?ange l2, and the head H] is merged with the web I I through a head ?llet [3 in accordance with the rail end batter noticeable in connection with general practice. when the bar is embodied in a joint, flexure of the rails within the length of the joint in accord ance with the natural wave motion of the rails The‘ splice bar consists essentially of a head M, to permit transmission of the rail wave motion through the joints, and at the same time the life 20 of a joint embodying splice bars constructed in accordance with the invention is considerably prolonged as compared with ordinary rigid joints, because of the fact that the provision for ?exure of the rails relative to the» splice bars within the 25 length of the joint materially reduces the de~ structive in?uence of this rail ?exure upon the joint considered in its entirety. " i The present splice bar is preferably, though not necessarily, of the headfree type, the same '30 preferably being constructed to take loading en gagement at the upper inner corner of its head with the head ?llets of both-standard and head free rail, and in addition, to have clearance at its head from the rail heads, whereby the ad 35 vantages of a headfree joint are combined‘ with the advantages inherent to a bar constructed to have intermittent contact with the rails in the a web l5. and a foot IE, but in sectional shape and general design said bar may be varied within Accordingly, the invention has in view to pro 40 vide a splice bar which embodies a novel con 0 ' with rail joints which are lacking in provision manner aforesaid. ,H relatively wide limits, the head of the bar pref erably, but not necessarily, being provided at its upper inner corner with a transversely rounded rib H to take loading engagement with the head ?llet l3 of either a headfree or a standard rail, and, in the event the bar is to be used with stand ard rail, the head of the bar also being formed, 5 preferably, for clearance from the underside of the rail head, this desired clearance being in herent to the use of the bar with headfree rail because of the removal of the lower, outer cor ners of the heads of rails of this type. ‘According to the particular embodiment of the invention illustrated in the ?gures, the rib or rounded bearing member l‘! at the upper inner corner of the splice bar is formed medially and at its ends, as at £8 and I9, respectively, for load 35 ing engagement with the head ?llets of the rails, while between these loading portions of said rib the same is deflected downwardly as at 2|], 20, respectively, for clearance from the head ?llets 40 struction designed to permit substantially free of the rails. transmission of the wave motion of the rails formed medially and at its ends, as at 2‘! and 22, respectively, for ?shing contact with the upper faces of the rail ?anges, and between said por tions 21 and 22 is de?ected upwardly, as at 23, 45 23, respectively, for clearance from the rail through a joint employing said bars, which is of relatively low production cost, which is strong 45 and ‘durable, and which serves to impart ample rigidity to a joint where rigidity is required. With the foregoing and other purposes in view, which will become more fully apparent as the nature of the invention is better understood, the 50 same consists in the novel features of combina tion, construction and arrangement as will be hereinafter more fully described, illustrated in the accompanying drawing and de?ned in the appended claims. 55 In the drawing, wherein like characters of ref At the foot of the bar the same is ?anges. The medial head ?llet and rail ?ange engag ing portions “3 and 21 of the bar are of a length to extend outwardly from the end of each rail a distance approximately equal to the length of the zone of maximum wear upon the rail ends, While the head ?llet and rail ?ange engaging portions I9 and 22 at the ends of the bar pref erably are substantially equal in length to the 2 2,072,619 length of the clearance portions 20 and 23 of the bar. In forming the bar the same preferably is rolled to uniform section throughout its length and the clearance portions 20 and 23 thereof preferably are thereafter provided by subjecting the bar to pressure between dies, or by any ap proved mill or shop practice, thereby to make the necessary displacements or movement of 10 metal so that the rail contact and the rail clear ance portions referred to will properly be formed 15 termittent rail clearing portions in the bar which are of reduced height as compared with the height of the rail contacting portions, thus insur ing a su?icient ?exibility of the bar to carry out the purposes of the invention. Without further description it is thought that the features and advantages of the invention will be readily apparent to those skilled in the art, and it will of course be understood that changes in the form, proportion and minor details of construction may be resorted to, Without depart without vertical or lateral deformation of the ing from the spirit of the invention and scope of web and without lateral de?ection, bending or bowing of either the head or foot portions of the the appended claims. bar. It is apparent that the bar B is not materially weakened by the provision of the clearances 20, 23 therein, and the bar therefore is of substan tially equal strength to a bar of equivalent sec 20 tion having contact throughout its length with the rails. On the other hand, because of the clearances 20, 23, it is equally apparent that the wave motion of the rails is permitted to freely pass through the joint substantially without in terruption, whereby only a relatively minor amount of batter of the rail ends occurs, and whereby the joint as an entirety is proportionate ly relieved of the destructive influence of traf?c passing over the same. Furthermore, the joint 30 bolts are more readily kept tight, the oppor tunity for wear on the joint bar, the rails and the joint bolts is reduced, and the maintenance cost of the joint is correspondingly reduced and the life of the joint correspondingly prolonged. 35 The drawing illustrates that in instances where bolt holes occur within the length of the clearance portions of the bar, enlargements 25 of metal may be allowed to extend into said clear ances so as not ‘to unduly weaken the bar in the 40 vicinity of such bolt holes. Moreover, the draw ing also illustrates the movement or distribution of a sui?cient amount of the metal of the bar from the regions of the clearances 20—23 to in sure ?exing or yielding of the bar to bending 45 strains i without materially decreasing the strength of the bar. They also illustrate that the bar may be formed for medial clearance at its foot from the rail ?anges, as at 26, and for the rail ?ange contacts at I8, 21, I9, and 22, without any 50 vertical or lateral deflection of the web and with I claim:— 1. In a rail joint, the rails, and a splice bar having loading engagement at the inner upper corner of its head medially and at its ends with the head ?llets of the rails, the head of said bar being formed for clearance from the rail head ?llets between the said head ?llet contacting 20 portions of the bar, the bar having bolt holes within the lengths of said clearance portions, re spectively, and said bar further having enlarge ments of metal in line with said bolt holes extend ing into said clearance portions. having base loading engagement at its ends with the rail bases, clearance inwardly of each end from the rail bases, and base loading engagement inwardly of said clearances with the rail bases, 30 the bar having bolt holes within the lengths of said clearances, respectively, and further having enlargements of metal in line with said bolt holes extending into said clearances. 3. In a rail joint, the rails, and a splice bar hav 35 ing loading engagement at the upper inner corner of its head medially and at its ends with the head ?llets of the rails, the head of the bar having clearance throughout its length from the under sides of the rail heads and clearance from the 40 rail head ?llets between the said head ?llet con tacting portions of the bar, said bar having base loading engagement at its ends with the rail bases, clearance inwardly of each end from the rail bases, and base loading engagement inward 45 ly of said last mentioned clearances with the rail bases, the bar having bolt holes within the lengths of said clearances, respectively, and further hav ing enlargements of metal in line with said bolt 50 holes extending into each of said clearances. out lateral deflection or bowing of either the head or foot portions of the bar, thereby providing in 25 2. In a rail joint, the rails, and a splice bar CLARKSON A. DISBROW.