US613799A - Process of joining rails - Google Patents

Description

Patented Nov. 8, I898 B. ENTWISLE.

W A 3 C W/TNESSES' UNITED STATES PATENT 0* Fries.

EDlVARD B. ENTYVISLE, OF JOHNSTOIVN, PENNSYLVANIA, ASSIGNOR TO THE JOHNSON COMPANY, OF OHIO.

PROCESS OF JOINING RAILS.

SPECIFICATION forming part of Letters Patent No. 613,799, dated November 8,1898..

A li ti fil d August 6 1898. Serial No. 687,935. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD B. ENTWIsLE, of Johnstown, in the county of Oambria and State of Pennsylvania, have invented a new and useful Process of Joining Rails, of which the following is a full, clear, and exact de- .scription, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to what are known as cast-iron joints for continuous railwaytrack; and it is the object of my invention to so improve these joints and the process of making them that I may be able to overcome certain difficulties found in this class of work in obtaining a true alinement of the railheads. In joining rails by this method there has been no control over the alinement of the rails except by a crude method of clamping the rails while casting. This has not always proved efficacious. The cast-iron has been poured about the joint so as-to completely surround the lower flange of the rail; but the top surface of the rail is left open, and as a result the lower part of the rail is heated more than the upper part. WVhile heated in this unequal manner, the lower portion of course tends to expand more than the upper portion, and as a result the rail cambers downward. Ordinarily a rail unequally heated in this manner will tend to restraighten during the cooling operation, and under some conditions will even have a reverse or upward camber when it has become cold; but in a case of this kind the cast-iron has so little malleability after it has chilled that the rail is prevented from cambering upward and is retained at a low position. This causes low joints and all the annoyances to which low above the head and tram of the rail as soon as it has become sufficiently cold, and to facilitate this removal I provide recesses in the side of the casting.

Referring to the drawings, Figure 1 is a sectional view of a rail-joint of my invention before the top portion of the cast-iron has been removed. Figs. 2 and 3 are side views of such a joint, showing the joint as it ap pears before and after removing the top portion of the casting.

A and B represent the two track-rails, and these are connected by the iron 0 cast about them in a mold, as is well known to those skilled in the art. Heretofore the mold used for this purpose has been shaped so as to provide a casting having the conformation of the casting of Fig. 3. By my improved method the casting is first formed substantially as shown in Fig. 1viz. with the additional top portion O and recesses 0 between the main body O of the casting and the top portion 0. As soon as the casting has cooled sufficiently the portion 0 is removed by blows from a sledge or by any suitable means.

The particular amount of metal in the top portion 0 proportionally to that of the balance of the casting is obviously a question to be determined by those skilled in the art. Where the top of the rail has a greater section than the bottom, it may be advisable not to heat it to quite so high a temperature, and the top portion 0 would be comparatively light. On the other hand, if the rails have been in use prior to the time at which they are connected by the cast metal it may be desirable to purposely camber the rails upward, (to be afterward made perfectly level by mechanical means, such as by shaping,) which may be done by increasing the amount of metal in the top portion 0.

I do not limit myself to the specific details which I have herein set forth, as these are not essential to my broad invention.

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

1. The method of casting rail-joints connected with cast-iron consisting in casting metal about the entire periphery of the ends of the rail and afterward removing the portion above the top of the rail.

2. A cast-metal rail-joint in which the metal is cast around the entire periphery of the ends of the rails but is removed after casting, from the top of the rail.

a portion extending above the tread-surface of the rail and with a portion extending below the lower flange of the rail, and then removing the first-mentioned portion of the casting.

In testimony whereof I have affixed my signature in presence of two witnesses.

EDWARD B. ENTVVISLE. Witnesses:

J OHN I-I. KENNEDY, II. XV. SMITH.

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