US356364A

US356364A - Railroad-crossing

Info

Publication number: US356364A
Authority: US
Publication date: 1887-01-18
Anticipated expiration: 1904-01-18

Description

(No Model.)

0. R. & H. JOHNSON.

RAILROAD CROSSING. No. 356,364.

Patented Jan. 18, 1 887.

\mewre'ks N CHHRLES R JOHNSON.

\Awmssas.

- UNITED STATES PATENT OFFICE.

CHARLES R. JOHNSON, OF ALLEGHENY, AND HENRY JOHNSON, OF PITTS- BURG, PENNSYLVANIA.

RAILROAD-CROSSING.

SPECIFICATION forming part of Letters Patent No. 356.364, dated January 18, 1887.

Application filed November-2, 1886. Serial No. 217,847. (No model.) 1

road-rossings, of which improvements the following is a specification.

In the accompanying drawings,which make a part of this specification, Figure 1 is a top plan view of a railroad-grade crossing embodying our invention. Fig. 2 is a sectional view on an enlarged scale, the section being taken on the line at m, Fig. 1. Figs. 3 and 4 are views similar to Fig. 2, showing modifications of our invention.

It has heretofore been customary in forming railroad-grade crossings to unite the main and guard rails and the filling-pieces together in proper relation to each other by means of bolts. In such a construction and arrangement of parts, however, a great deal of annoyance and trouble have been experienced by the shearing off of the connecting-bolts by the creeping of the main rails-a movement well known to railroad operators-caused by the movement of trains.

The object of the invention herein is to provide a lock to secure the main rails to the filling-blocks as against longitudinal movement of the rails, independent of the bolts, and thereby relieving the latter of any transverse strains or shearing action; and to this end the invention consists in the construction and combination of parts, substantially as hereinafter more fully described and claimed.

In the practice of our invention the main rails 1 and guard-rails 2 are arranged in the usual manner, filling-blocks 3, which may be made in one, two, or more pieces, being arranged, as usual, between the main and guard rails at the points of intersection of the latter. It has generally been customary to cause the upper and under sides of the filling-pieces to conform to the inclined under and upper surfaces of theheads and flanges of the guard and main rails; but this we consider bad practice,

side of the rail-head are planed level, as shown at 4, Fig. 2, for a distance from the ends of the rail equal to the length of the filling-blocks, which are made plain or straight on their under and uppersides, so as to fit the leveled 6o "portions of the rails, and thereby avoiding any spreading action by the blocks when struck by the flanges of car-wheels.

In order to lock the main rails as against longitudinal movement, slots are'cut in the webs of the rails, as shown in Fig. 2, and correspondingly-located recesses are formed in the filling-pieces, as shown, and into the slots and recesses, which are in line with each other when the filling-blocks and rails are in position, are placed locks or keys 5, said keys being constructed to fit comparatively tight 1n slots and recesses. The rails, filling-blocks, and bracing corner-frames 6 are secured together by bolts 7, passing through suitable holes in said parts, the holes in the main rails 1 being slightly enlarged, so that the sides thereof will not bend or bear upon the bolts. The blocks 5 will effectually prevent any longitudinal movement of the rails independent of the fllling-blocks,which, in the form shown, are prevented from moving by the arms at angles to the one looked to the main rail.

In lieu of forming recesses in the fillingblocks for the reception of the ends of the keys 5, said keys may be formed integral with the filling-block s, as will be readily understood, and in case the filling-blocks should be made in several pieces, as is sometimes the practice, the recesses may be extended entirely through such blocks, forming slots therethrongh, and slots formed in the web of the guard-rail, in which case the keys are made of snfficient length to extend through the blocks and into the slots in the webs of the 5 guard and main rails. This construction serves to lock the filling-blocks as against any movement except in eonneetiolhvith both the guard and main rails.

We claim herein as our invention 1. In a railroadgrade crossing, the combination of the rails included in such crossing, filling-blocks arranged between said rails, and keys or blocks forlocking the filling-blocks and rails together as against independent longitndinal movement, substantially as set forth.

2. In a railroad-grade crossing, the combination of the main rails, the filling-blocks, and keys or blocks engaging said rails and fillingblocks andlocking them together as against independent longitudinal movement, substantially as set forth.

3. In a railroad-grade crossing, the combination of the main rails having their webs slotted. as described, the filling-blocks having recesses in line with said slots, and keys or blocks fitting in said recesses and slots and locking the rails and filling-blocks together as against independent longitudinal movement, substantially as set forth.

4. In a railroad-grade crossing, the combination of the main and guard rails having the under sides of the heads and the upper sides of thei 1' adjacent flanges flattened, as described, and filling-blocks having their upper and under sides correspondingly shaped,substantially as set forth.

In testimony whereof we have hereunto set our hands.

CHARLES R. JOHNSON. HENRY JOHNSON. Witnesses:

R. H. WHrr'rLEsnY, DARWIN S. VV0Loo'r'r.