US1820603A - Switch point construction - Google Patents

Description

Aug. 25, 1931. o. A. DICKSON 2 SWITCH POINT CONSTRUCTION I Original Filed Nov. 29; 1929 2 Sheets-Sheet 2 N inventor A ttorney Patented Aug. 25 1931 UNITED STAT 'PATENTOFFICE:

OSCAR A. DIOKSON, OFTUCSON, ARIZONA I SWITCH POINT CONSTRUCTION Application filed November 29,1929, Serial No.'410,5a7. Renewed June 15, 1931,

This invention has reference to certain improvements in railway and switch point structure of the type designed to allow movement of the rails longitudinally independent of i each other while being held securely together against lateral movement to compensate for variable temperatures in weather conditions and to decidedly promote safety and to minimize wear on the rails. V

The principal novelty is predicatedupon certain improvements andrefinements found in the employment of a unique arrangement of elements cooperating in a more dependable and satisfactory manner to fulfill the requirement of a construction of this class in a highly satisfactory and efficient manner.

The particular structural details in their arrangement and association will become more readily apparent from the following de- 7 L5 scription and drawings".

In the drawings:

Figure 1 is a fragmentary top plan view of a rail switch point construction as devised in accordance with my invention,

Figure 2 is a transverse sectional view taken approximately upon the plane of the line 22' of Figure 1, V t

Figure 3 is an end view of the spacer block, Figure at is an end view of the clamp retain- C ing wedge,

Figure 5 is a top plan View of said wedge, Figure 6 is a fragmentary view of one of the hooked end portions of the special clamp. In the drawings in Figure 1, the reference 5 character 7 designates one rail and 8 the other rail which are arranged in usual converging spaced relation cooperable with the sections of the rail 8 with the usual fish-plate 9 which bridges the joint between the sections.

451 Between the rails and also bridging the joint is a spacer or filler block 10 of substantially conventional configuration. As

seen in Figure 2 this spacer block has its longitudinal edge portion constructed to engage the base flange, web, and head of the rail.

Also in accordance with my invention I provide along one side a plurality of countersunk bolt head receiving sockets 11 which as seen in Figure 3 are substantially rectangular 59 in shape, to receivethe rectangular shaped bolt head of a bolt 12 shown in Figure 2. V The bolts 12 have their threaded ends extending through the web of the rail 8 and also through bolt holes in the fish-plate 9.

Projecting threaded ends "are provided 65 with customary retaining nuts 13. The square socketsprevent rotation, of the bolts 12 and facilitate application of the nuts 13.

I also wish to call attention to the fact that on the pocketed side of the spacer blockand at the top thereof I provide an oil delivery channel 14 having suitable entrance ports at 15; i

.The oil channel 14 allows the flow of oil in a longitudinal direction and lubricates the adjacent surface of the rail 8so that it has free longitudinal movement with respect to the companion rail 7. I beg to invite attention to the clamp 16 as seen in Figure 2 which is in the nature of a narrow plate having hooked ends 17 and 18 which embrace the rails forpreventing them from moving in a direction away from each other. The hook 17 directly engages the fish-plate 9. The hook 18 engages the vertical portion of the longitudinally adjustable retaining wedge 19.

This wedge it will be observed has a flange 20 engaging the base flange of the rail and also has an abutment in the shoulder 21. Then too I provide a multiplicity of keeper holes22'as seen in Figure 5 to accomodate the cotter key shown in dotted lines at 23 in Figure 2.

- The clamp 16 together with the adjustable wedge holds the two rails together taking the place of a rail chair such as is frequently 7 employed for the purpose. This clamp may be easily installed by applying it to the point of the switch and then sliding it back into place before the rails are spiked to the tie.

This clamp and wedge attachment may be inexpensively manufactured and is exceptionally simple in construction. :Then i too it can be easily adjusted and when once in place with the nuts on the bolts it cannot possibly'shift out of position. i

The wedge is used to adjust the tensionof the clamp. It may be driven in as far as desired and then held in place by means of the cotter .key, as shown. It is provided with 9 oilways 24 so that lubrication may be used to eliminate friction and to allow free movement of the rails with respect to each other. The spacer block, sometimes referred to as a filler and also referred to as a heel block, is distinctive in that it includes the means for circulation of oil and countersunk sockets of a depth to allow the bolts to be retracted so that the clamp may be easily placed in position.

From the foregoing des'ription and drawings it will be seen that I have evolved and produced a novel assembly of parts of such construction and operation as to provide an assembly capable of fulfilling the requirement of railway appliance of the type specitied.

Having thus described my invention, what I claim as new is:

1. In a structure of the class described, in combination, a switch point structure embodying a pair of companion rails, a fish plate disposed on the exterior and bridging the joint between the sections of one rail, clamping means for securing the rails together to prevent separation of the rails, a spacing block interposed between the rails and provided below one inner top edge with lubricant receiving and conducting longi tudinal channels, said side adapter to contart the movable rail and having deep squared sockets in said side communicating with bolt holes, through the block and bolts having their headed ends arranged in sand sockets and their threaded ends extending through 'the opposite side of the block, through the web of the adjacent rail, and through a hole in said lish plate, and provided with. retaining nuts, said sockets being deep enough to permit partial withdrawal of the bolts to permit adjustment of the fish plate.

2. In a structure of the class described, a pair of spaced converging rails, a spacer block interposed between the rails provided with lubricant conducting channels near one upper edge, and a fish plate disposed along the web portion of one of the rails, belts passing through said block and said rail and said fish plate and securing them in plat-g and a clamp comprising a plate having hooks e):- tending from the base portion of each of the rails to the upright plate portion, and mid hooks engaging over the base flanges of the rails, one of said hooizs engaging the face oi the lish plate. and an adjustable wedge dis;- posed between the statimiary rail and the con panion. book of the clamp, and oil distributing longitudinal grooves near the upper edges of the other book and the spacer blocs where they contact with the movable rail.

3. In a structure of the class described, a stationary rail and a movable rail in converging relat on, a 8}).(291 block interposed between the rails and provided with lubricant distributing means at the movable rail side thereof, a fish plate disposed along the web portion of the stationary rail, bolts passing through said block and sntionary rail and securing the fish plate in place, and a clamp comprising a rail conforming plate extending from the base portion 0'? each of the rails and having hooks formed to engage its lower flanged edges, one of said he ks clamping over the fish plate, and the other over the web flange and shoulder of said movable rail, and an adjustable wedge disposed between the stationary rail and companion heck of the clamp, said wedge being provided in its face with a multiplicity of longitiulinally spaced keeper holes for reception of a selectively applicable cotter key for retaining its relative position, the said movable rail and clamp, sai d movable rail clamp being sin'iilarly formed with the heel block with lubricant receiving and distributing means disposed in contact with the out-sides of said shifting rail.

4-. In an expansion and contraction compensating structure of the class described, comprising a jointed rail, and a continuous rail in converging relation to said jointed rail, a heel block between said rails, said heel biocl; being provided, at the point contacting the continuous rail, with longitudinal lubricant conducting channels, and below said channels with a plurality of deep squared sockets leading to bolt holes through the block, and a clamp plate of conventional type engaging the outer face of the jointed rail, and bolts having squared heads cisposed in said sockets and having their threaded ends through said block, the web of the rail, and said clamp plate, and nuts on said ends of the bolts; and another clai .p plate contacting the outer face of the continuous rail hav a base flange provided with cotter pin holes, a. cotter pin in one of said holes and a rail spreading preventing means in re ntive contact with the said clamps and exterior-iv in contact with the rails, comprising a body having upstanding hooked arms portions. I

In testimony whereof I aliix my signature.

OSCAR A. DICKSt N.

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