US2146248A - Railway rail joint - Google Patents

Description

Feb. 7, 1939, A. N, BRGDEN *2,146,248

RAILWAY RAIL JOINT Filed Nov. 12, 1956 2 sheets-sheet 1 Feb. 7, 1939. A A. BROGLDEN 2,146,248 v RAILWAY RAIL JOINT Filed'Nov. 12, 193e 2 sheets-sheet l2 Patented Feb. 7, 1939 UNITED STATES PATENT GFFICE Application November 12, 1936, serial-No. 110,522 In Great Britain December 11, 1935 2 Claims.

The present invention relates to improvements in rails and rail joints of the type in which the ends of lengths or sections of rail are divided from its centre to be of half-thickness, so that when fitted to a similarly out rail-end, the two cut parts overlap and form a continuous rail of even thickness.

-According to one embodiment of my invention, an end of a rail of half-thickness has a pair of elongated bolt holes alone for the bolts of a twobolt fish plate or washer plate, the end of half thickness extending beyond the end of the sh plates or washer plates and overlapping a pair of .adjacently disposed chairs on supporting sleepers.

Other'objects of the invention will be in part obvious and in part pointed out hereinafter.

In order thatl the invention and its mode of operation may be readily understood by per- 20 sons skilled in the art, I have in the accompanying drawings and in the detailed following description based thereupon, set out an embodiment of the same. In the drawings: 25 Fig. `1 is a diagrammatic View of the use of rails under the invention.

Figure 2 is a plan view. Figure 3 is a side elevation of the rail joint with the sh plate removed and showing the po- 30 sition of the joint upon the chairs of the adjacent supporting sleepers.

Fig. 4 is a vertical transverse section taken through the rail sections and iish plate at one of the bolt holes showing the clamping bolt for joining the sections.

Figure 5 is .a horizontal sectional View through the rail joint.

Figure 6 is a side elevation of the rail joint with a slightly modified form of sh plate ap- 40 plied thereto.

Figure 7 is a horizontal sectional View of the rail joint when employingl the fish plates as shown in Figure 6 with parts loosely assembled.

Figure 8 is a vertical sectional View through 45 the same when the joint is tightened and illustrating in dotted lines a flanged rail together with its chair support.

One or both ends of rail lengths I, 2, are of half width, as shown at 3, 4, respectively, and have 50 their edges preferably bevelled as shown at 5. These half width ends are perforated with holes I of standard diameter, but elongated into somewhat elliptical shape as shown, to allow of bolting together of the joints by means of bolts 1 of 65 standard diameter, but allowing for the expan- (Cl. 23S-237) sion of the rails. Washer plates 8 are used as shown.

It is essential to support the joint upon a pair oi adjacent sleepers S-Figure 2-and chairs I0, the rail ends being secured therein by wooden or metal keys.

If desired, the rail ends may be connected by means oi standard iish plates cut into halves, and by means of standard bolts, thus affording a considerable saving where these parts are already available. Such a joint is shown in Figures 6 to 9, the standard sh plate being cut into two pieces II and having the usual pear-shaped bolt holes I2, co-operating with snugs I3 on the I, standard bolt I4 to prevent rotation of these. 1

It will be obvious that by the use of standard sh plate parts II, as shown, that the joint will be considerably strengthened owing to the support of the fish plates upon the rail ends 3, 4.

It will be obvious that the invention is applicable to any Aform of rail. A bull-headed rail has been shown purely by way of example; the joint being shown applied to a at bottomed or anged rail, in dotted lines at I1, Figure 8.

1t win be appreciated that this joint enabies 25 shorter bolts to be used if desired, with consequent saving in expense, and it is possible to use a pair of bolts instead of four bolts and two iish plates, as has hitherto been necessary.

It will also be possible to arrange the chairs nearer to one .another at the rail ends, thus strengthening the joint. It will be noted from V the drawings that the end 5 of each lapping section is spaced away from the opposed end of the cutaway portion so as to provide considerable clearance. This, together with the use of a short washer plate which does not overlap the joint between the sections, and the arrangement of the chairs disposed on opposite sides of the joint, provides a construction which permits expansion and contraction of the rail under rising and lowering temperatures, and which also permits the rails to deflect and react to vibration, not only between adjacent sleepers throughout the length of the rail, but in the region of thejoint. The shortened sleeper or washer plate firmly clamps the web sections together and prevents any loosening of the nuts, but does not interfere with deflection of the rails at the joint.

What I claim as my invention and desire to secure by Letters Patent iszl. A rail joint comprising rails having the end portions thereof cut away to provide lapping sections, the inner contacting faces of which lie in a central vertical plane containing the longitudinal axis of the rails, non-resilient means for connecting said overlapping end sections including a washer plate disposed between the ends of said lapping sections, elongated bolt holes extending through the washer plate and the lapping sections, and bolts extending through said bolt holes for clamping the washer plate and lapping sections together, the end of each lapping section being suiciently spaced away longitudinally from the opposed shoulder formed in the other rail by the cutaway portion thereof to permit freedom for vertical deflection at all times.

2. A rail joint comprising rails having the end portions thereof cut yaway to provide lapping sections, the inner contacting faces of which lie in a central vertical plane containing the longitudinal axis of the rails, non-resilient means for connecting said overlapping end sections including a Washer plate disposed between the ends of said lapping sections, two elongated bolt holes only extending through the washer plate and the lapping sections, and bolts extending through said bolt holes for clamping the Washer plate and lapping sections together, supporting chairs adjacently disposed. on opposite sides of the joint, the ends of the lapping sections extending beyond the washer plate and overlying said chairs, the end of each lapping section being sufficiently spaced away longitudinally from the opposed shoulder formed in the other rail by the cutaway portion thereof to permit freedom for vertical deflection at all times.

ALFRED NATHAN BROGDEN.

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