US791974A - Frogless switch. - Google Patents

Description

PATENTED JUNE 6, 1905.

C. M. ALLEN.

' FROGLESS SWITCH.

X INVENTUR WITNESSES:

UNITED STATES Patented June 6, 1905.

PATENT OEEicE.

CLINTON M. ALLEN, OF I/VEST BAY CITY, MICHIGAN, ASSIGNOR OF ONE-FOURTH TO WILLIAM A. VVILDER AND THREE-FOURTHS TO ALEXANDER ZAGELMEYER, OF WVEST BAY CITY, MICHIGAN.

FROGLESS SWITCH.

SPECIFICATION forming part of Letters Patent No. 791,974, dated June 6, 1905.

Application filed January 21, 1905. Serial No. 242,156.

To all whom it may concern.-

Be it known that I, CLINTON M. ALLEN, a citizen of the United States, residing at I/Vest Bay City, in the county of Bay and State of Michigan, have invented certain new and useful lmprovementsin Frogless Switches; andI do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in railway-crossings, and pertains more particularly to the construction of a switch whereby the use of the ordinary frog is avoided and the rails of the diverging tracks are so operated as to bring the split or tapered end of the movable switch-rail into close contact with the corresponding track-rail while simultaneously moving the opposite square-cut end of the switch-rail into line with the ends of the adjacent track-rails, so as to form a close butt-joint instead of an overlapping joint, as has heretofore been the case.

My construction afiords no place in the middle of the track in which a switchman may catch his foot, thus reducing the liability of accident.

With these and other advantages in view, which will appear later'in this specification, my invention consists in the devices shown in the accompanying drawings, in which Figure l is a perspective view of a switchstand and a switch embodying my invention.

Fig. 2 is a top plan view showing the ends of the rails in position to permit a train to travel from the main track onto the side track. Fig. 3 is a similar view showing the rails arranged for travel straight along the main track.

In the drawings, J J are the rails of the main track, and K K are the rails of the switchtrack or siding.

A A are split rails of the usual form secured to the switch-bar H, which is operated by the switch-stand B.

The ends of the rails A and A slide on suitable plates A, secured on the tie. The opposite or square-cut ends of the split rails A A are arranged close together and connected by pivoted links D, so that both the rails move together when operated by the link F, which is actuated by the bar H through the bellcrank lever H, link H, and double bell-crank lever'G. A second link F also connected to the double bell-crank lever G, as shown in Fig. 1, is pivotally secured to the rail B, which is connected by the link D to the end B of the switch-track rail K. Movement of the lever G actuates simultaneously the rails A and A and B and B, so that the rail A may be brought into direct line with rail B or the ends of A and B can be brought into exact register, as indicated in Fig. 3, thus leavingaclear smooth track tread whether the switch is thrown for the main track or siding. It will be noticed that the amount of movement necessary for either the pair of rails A A or the pair B B is very small, since each pair moves half the distance required to open or close the switch.

The rails A A slide on suitable bearingplates E and the rails B B slide on similar plates E. The joint formed between the rails A" and B or between A and B, as indicated at C, is always a square or butt joint. This reduces the liability of accident to a switchman by catching his foot in the rails, and the construction of the switch is such that the rails A and A or B B may be sufliciently far apart to avoid liability of such an accident.

By means of the links H H F F and levers G H both ends of the rails A and A are moved simultaneously, thus doing away with the necessity of providing pivots at an intermediate point, such as I and I.

What I claim as my invention, and desire to secure by Letters Patent, is as follows:

In a railroad-crossing the combination with the main-track rails and switch-track rails, of a pair of split rails, each of said rails being tapered at one end and cut square at the other end; a switch-bar operatively connecting the tapered ends of said split rails; a toggle-lever and link actuated by said switchbar; a double toggle-lever connected to the end of said link;

and a link connecting one end of said double In testimony whereof I aflix niysignaturein toggle-lever to the square-cut ends of said presence of two Witnesses.

split rails; together with a link connecting the x r other end of said double toggle-lever With the (JLINlON ALLLN' ends of the main-track rail and the switch- Witnesses: rail; and a link connecting the ad acent ends J. S. LEE,

of said traclvrail and switch-rail. W. I. CATHOART.

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