US666926A - Railway-switch stand. - Google Patents

Description

Patented lan. 29, |901. E. B. ENTW|SLE. RAILWAY SWITCH STAND.'

(Application led'Jnne 15, 1900.)

(No Model.)

Wl TNE SSE S r UNITED STATES' PATENT FFICE.

EDWARD B. ENTWISLE, OF JOHNSTOW N, PENNSYLVANIA, ASSIGNOR TO THE LORAIN STEELy COMPANY, OF PENNSYLVANIA.

RAILWAY-SWITCH STAIN D.

SPECIFICATION forming part of Letters Patent No. 666,926, dated January 29, 1901.

Application filed June 15, 1900. Serial No. 20,445. (No model.)

To all whom, it Inn/,y concern:

Be it known that I, EDWARD B. ENTWIsLE, of Johnstown, in the county of Cambria and State of Pennsylvania, have invented a new and useful Improvement in Railway-Switch Stands, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

My invent-ion has relation to certain new and useful improvements in railway-switch stands or ground-switch throws, and is designed to improve that class of switch standsY or throws in which the operating-lever is moved in a direction parallel to the track instead of at right angles thereto and also to provide a compact, desirable, and efficient device of this character.

With these objects in view my invention consists in the novel construction and combination of parts, all as hereinafter described, and pointed out in the appended claims, reference being had to the accompanying drawings, forming a part of this specification.

In the drawings, Figure l is a plan view of my improved switch-stand. Fig. 2 is a secf tion on the line 2 2 of Fig. l. Fig. 3 is a side view of the base-plate. Fig. 4 is a plan view of the same. Fig. 5 is a detail view of the liner or bushing, and Fig. 6 is a detail view showing the means by which the barrel or cylinder is given longitudinal movement.

The letter A indicates a bottom or base plate designed to be spiked to the wooden track-ties. Y

B is a hollow cylindricallshell, one end portion of which is rotatably seated in a transverse concave bearing A in the base-plate and secured against displacement by a strap C, fitting over its upper portion between flanges c thereon and bolted to the base-plate. A

an exterior helical rib or'iin E2, which is engaged by a groove in a segmental lug F on the interior of the shell B. On the outer end of the cylinder or barrel E is secured a cap G, which partially Iits within the shell B.

H is the switch-rod, which extends through the barrelE and also through the cap G, its outer end being secured by a nut g.

I I/ are two cones which are loosely seated on thesWitch-rod within the barrel E, the

cone I seating back against the cap G and the cone Il seating against an interior shoul- -against rotary movement, the engagement of the grooved lug F with the helical iin or rod E will necessarily impart an endwise movement to the said barrel to the left, (looking at Fig. 1,) thereby compressing the spring J, which acts to throw the switch, the compression being effected through the movement of the cone I. Upon the reverse or return movement .of the lever D the barrel E is moved to the right, thereby moving thecone I against the spring and compressing it from the oppo- 'site direction to eifect the reverse throw of the switch. In assembling the parts the springJ is given some initial compression,

and inasmuch as the endwise movement of the barrel E is appreciably greater than the movement required to throw the switch the resulting compression of said spring is not only sufficient to move the switch, butit also assists the initial movements of the lever D. The arrangement of the spring, it will be seen, permits the Vrod to yield in either direction in case a train should trail through the switch.

L indicates lugs on the base-,plate A, over which a loop or hasp on the lever D may be slipped and locked in the usual manner.

In order to facilitate assembling the parts and to provide a proper bearing for the shell ICO B,the concave bearingA/ is made deep enough to receive a semicylindrical liner or bushing P, which is slipped in place after the shell and its adj uncts have been assembled on the base-plate. This liner or bushing is of the proper width to lit between the flanges c. It will be readily seen that if the bottom of the bearing A' was itself formed to fit the shell the shell could not be seated, because of the necessity for entering the angular portion E' of the barrel E in the opening a at the same time.

I do not wish to limit myself to the exact construction, arrangement, and combination of parts which I have herein shown and described, as these may be varied in detail without departing from the spirit and scope of my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. In a switch stand or throw of the character described,the combination of a base-plate, having a concave bearing therein, the hollow shell seated in said bearing, and formed with circumferential llanges, the liner or bushing seating in said bearing and fitting between said flanges, the strap securing said shell against longitudinal movement, the barrel seated in said shell, and held against rotary movement, means for rotating said shell, means whereby rotary movement of the shell elects longitudinal movement of said barrel, a switch-rod, and a double -acting spring through which the movements of said barrel are imparted to the switch-rod.

2. In a switch stand or throw of the character described, the combination of the rotary shell, having aninterior lug formed with a segmental helical groove, the level' connected to said shell, the barrel within said shell held against rotary movement, but free to move EDlVARD B. ENTVVISLE.

Witnesses:

BLANCHE M. SMITH, H. W. SMITH.

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