US1483437A - Railway crossing and method of making the same - Google Patents

Description

Feb. 12 1924- W. T. HEADLEY RAILWAY CROSSING AND METHOD OF MAKING- THE SAME Original F e 1 94. 1921.

WITNESS:

patented Feb; 32, iQZd.

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WILLIAM '1. HEADLEY, OF PHILADELPHIA, PENNSYLVANIA.

RAILWAY CROSSING AND METHOD OF MAKING THE SAME.

Application filed August 4, 1921, Serial No. 489,687. Renew ed march 26, 1922. Serial No. 545,344.

To all whom it may concern:

Be it known that LJVILLIAM T. Hnamsv, a citizen of the United States, residing at Philadelphia, in the county of Philadeia phia and State of Pennsylvania, have invented new and useful Improwments' in Railway Crossings and Methods of Making the "Same, of which the following is a specification. Railway crossings usually consist of planking which is expensive and neither safe nor satisfactory because not infrequently the planks are torn up by passing trains and because the planking is not tight and admits water and dirt to the ballast which interferes with drainage for the ties and is otherwise obviously objectionable. Some;- times slabs of molded concrete or metal are employed instead of planks but they are very expensive and require special machinery for their installation and inuse they are apt to creep or shift from the proper positions. In cities where asphalt plants are available hot asphalt pavin mixture has been laid between the rails and directly on top of and in contact with the ballast, but

aside from the requirement of a hot asphalt lant such crossings are brittle and are at best makeshifts of limited application and doubtful utility.

The principal object of the present invention is to obviate the above mentioned defects and disadvantages and to provide a. comparatively inexpensive railway crossing that can be laid cold anywhere by common labor and without the useof any plant or special apparatus and which, when laid. is not, brittle or friable and is durable and satisfactory from-every point of view in- 40 eluding, more especially the requireu'iems of a railway line.

' The invention ill be Clitlll'lfd at the end hereof but will be first described in connection with the embodiment of it selected for illustration inthe accompanying drawings which are a perspective "iew of a railway crossing construeted according to and embodying features of the invention.

In the drawings 1 is ballast providing drainage and access for air; Stone of ballast size may well come up to Within three inches, more or less, of the under side of the head of the rail 2, and it should be compressed thoroughly by tamping or rolling especially under the flange of the rail. 3

is a binder course, and 4 a. superposed wearmade by coating sufficient ballast stone to cover-a depth of two inches, more or less, of the surface after compression by tamping or rolling. The wearing surface can be made by coating stone or gravel which will pass through a one inch ring and be retained on a quarter inch ring. The wearing surface is tamped or rolled and is made solid against the rail. The material used in each case for coating the .stone is an asphaltic binder which can be applied cold and with which the stone is laid cold and sets cold. An emulsion of asphalt withwater is an example of the coating and asphalt cut back with a suitable volatile solvent is another example. 5 are ties contacting with the ballast 1 for drainage and air and roofed by the binder course and wearing surface. The rails 2 are arranged on the ties and embedded in the binder and wearing courses and where an electric signal system is employed they are provided with an insulating coating indicated at a" which may consist of the same material as the asphaltic coating used for the stone. Flange ways 6 are provided in the wearing surface and they may well be formed by the flanges ot the wheels of a train passing before the wearing surface is set. A scalin coating of the same asphaltic material maybe applied to the surface of the flange ways. provision of the binder course 3 effects a saving in the use of asphaltic binder and affords a good bearing and prevents shifting.

The term asphaltic binder is used herein in a broad sense and is meant to cover tars and other equivalent bituminous materials.

It will be obvious to those skilled in the art to which the invention relates that modifications may be made in details of construction and procedure without departing from the spirit of the invention which is not limited as to those matters or otherwise than as the prior art and the appended claims may require.

l. A railwaycrossing comprising in-c'ombination ballast providing drainage and access for air, a binder course and a superposed wearing surface each consisting of I t may be remarked that the,

stone and an asphaltic bindel and arranged on the ballast and adapted to shed "ater and provide necessary resilience and sta bility, ties contacting with the ballast for drainage and air and rooted by the binder course and wearing surface, rails arranged on the ties and embedded in the binder and wearing courses, and flange ways provided in the wearing surface, substantially asdescribed. r

2. A railway crossing comprising in combination ballast providing drainage and ac cess for air. a binder course and a superposed wearing surface each consisting of stone and an asphaltic binder and arranged on the ballast. and adapted to shed water and provide necessary resilience and stability, tics contacting with the ballast for drainage and air and rooted by the binder course and wearing surface, rails arranged on the ties and embedded in the binder and wearing courses and provided with an insulating coating, and flange ways provided in the wearing surface and having a sealing coating, substantially as described.

3. The method of making a railway cross ing which consists in putting ballast under and in contact with the ties fordrainage and air, applying an insulating coating to themails, superposing a cold binder course of stone and asphaltic binder upon the ballast, superposing a cold wearing surface of stone and asphaltic binder upon the binder course and against the rails to roof the ties, making flange ways in the wearing surface before it sets, and sealing the flange ways by coatin them with a sealing compound, substantizfily as described.

4:. The method of making a railway crossing which consists in pnttmg ballast under and in contact with the ties for drainage and air, supcrposing a cold binder course of stone and asphaltic binder upon the ballast, superposing a cold waring siu'face 01 stone and asphaltic binder upon the binder course and against the rails to roof the tics, and making flange ways in the wearing surface before it sets, substantially as described.

5. The method of making a railway crossing which consists in putting ballast under andjin contact with the ties for drainage anu'air, superposing a cold course of stone and asphaltic binder upon the ballast and against the rails to root the ties, and making flange ways in the wearing surface before it sets, substantially as described.

XVILLIAM '1. HEADLEY.

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