US1566246A - Railway pavement and method of making it - Google Patents

Description

Dec. 15, 1925.

M. F. BRAMLEY RAILWAY PAVEMENT AND METHOD OF MAKING IT Filed July 18. 1924 Patented Dec. 15, 1925.

UNITED STATES MATTEEW F. BRAMLEY, OF CLEVELAND, OHIO.

RAILWAY PAVEMENT AND METHOD OF MAKING IT.

Application filed July 18, 1924. Serial No. 726,758.

T 0 all whom it may concern:

Be it known that I, MATTHEW F. BRAM- LEY, a citizen of the United States, residing at 11420 Harbor View Drive, city of Cleveland, in the gtate of Ohio and county of Cuyahoga, have invented a new and useful Improvement in Railway Pavements and Methods of Making Them, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention pertains to a railway construction and more particularly to a railway pavement or thatvportion of a pavement which is located between the rails of one particular track. The method of building my invention is likewise believed to be novel.

I-Ieretofore, so far as I am aware, street pavements between track rails have generally been what may be termed a unitary structure, either of cemented brick, tarred or cemented cobble stones or an asphaltum layer. While said pavement strips have been mainly at an approximate level with the treads of the rails, a recess or depression had to be provided alongside of the inner side of the rails of suflicient depth to permit the rotating passage of the wheel flange and of sufficient width to allow for the inevitable side play of the'wheel flange The outer borders of the brick or cobble stone pavements could not be feasibly spaced an adequate distance from the rails because lateral support for the imbedded border units even though a yielding filler like tar be supplied. In consequence, the wheel flanges soon fractured and loosened the edge units. If an asphalt pavement be spread closely against the rails the flanges of the wheels so severely punished the borders as to very soon distort and fracture them. The automobile, espe cially trucks, contributed to the progressive injury of the bordersof the pavement strips 7 under consideration.

- The object of my invention is to provide a remedy for the previous faulty, unsightly ultimately expensive and sometimes dangerous constructions.

I propose the use of curbing as elongated units, with appropriate modification opposite the fish plates employed at the rail joints, which it is my initial intention to factory form .of rich concrete and preferably s mbmfi i g' metal reenforcement. The curb ing includes an upper pavement surface substantially level with the rail treads while another upper surface portion nearest the. rail is depressed and projects below the rail head to form in conjunction with the side of the rail head a trough of adequate depth and width for any expectable movementof the wheel flange. Preferably, the curbing is slightly spaced from the rail to' permit of the positioning therebetween of a suitable yielding substance'to allow for rail vibration. Pitch may be poured in said longitudinally extending space. After the rails are adjusted and fixed in place and a suitable sub-foundation has been provided, I support the curbing in its proper spaced relation to the rail. This may be accomplished by temporarily clamping the curbing sections to the rails or in any other satisfactory manner holding them in place during the time required for an indurating foundation to become hard. Thereafter, any preferred type of pavement may be laid between the two runs of curbing so as to be flush with the pavement surfaces of the latter.

Adverting to the drawings Fig. I is a perspective view of one of the novel elements, the curbing, of my railway construction.

Fig. II is a vertical cross-section of a railway track together with its sub-foundation and also showing on one side one of my curbing elements temporarily clamped in place. I v

Fig. III is a view corresponding toFig. II with the addition as a further step in the method of a layer of'concrete in which the curbing elements, inwardly adjacent both rails, are shown to be partially embedded.

Fig. IV is a sectional view similar to Figs. II and III after completion of the method, the temporary clamps having been removed and the upper surfacing pavement layer added. Broken views of a pair, of car wheels are also illustrated.

Fig. V is an enlarged broken view of a part of Fig. IV.

Fig. VI is a perspective View of a precast concrete curbing modified by the provision of a lateral recess for occupation by a fish plate.

My curbing element 1, preferably pre cast of rich concrete is reinforced by a tie rod arrangement 2. The lower side of the curbing is roughened at as by serrations or co mngations, The upper side Of the and thickness as may be determined by the conditions with which the contractor is confronted.

Upon the sub-foundation 6 rails 7 have their bases 8 rest. The rails 7 are provided with heads 9 of conventional shape. Railway ties (not shown, since common to the art) may be employed to hold the rails in proper alinement. The curbing elements 1 are then caused to rest upon a suitable num ber of supports it) so that the thinner sides of the curbing elements project underneath the head 9 of the rail. Any su table type of clamp ll co-acts to hold the curb ing elements temporarily in a position in which they appear in Figs. H and Ill. It will be observed that a slight space is left between the smaller sides of the curbing element and the rail. The purpose of pro viding this free space will be later explained. Next, concrete 12 is poured in be tween the rails, appropriately tamped underneath the curbing elements which are inwardly adjacent a pair of parallel rails, and allowed to indiu'atc to approximately the level shown in Fig. Ill, after which the clamps 11 may be removed. will be observed in Fig. Ill opposed sides converge in a downward direct-ion. Thereafter, pitch 13 or any other suitable yielding substance is poured into the open space provided between the smaller side of the curbing elements and the inside of the rail as is clearly shown in Fig. V. The object of the pitch 13 is to permit of rail vibration without causing displacement of the curbing elements as will be readily understood by those skilled in the art. Finally, the upper layer of pavement 14. asphalt being shown, is spread upon the concrete 1? and rolled to have a slightly convex upper surface, the sides of which being level with the tops of the curbing elements. hen completed the depressions 4 will provide clearing space for flanges 15 of car wheels 16, and the clearwill be sufficient both downwardly and sideways to allow any expectable play of the wheel flange as suggested by the dotted lines at the left side of Fig. IV.

My railway pavement construction will be seen to provide a uniformly adequate channel adjacent the inner side of the rail head for all except inordinate wheel movements. Even if the wheel flange should 00- casionally strike one of my curbing ele ments, the length and strength of the latter will be able to resist the punishment to which it might be subjected. The whole construction will tend to maintain its shape, while loads carried by the surface 1 1- will tend to spread the curbing elements outwardly and to hold them in proper position with respect to the rails.

The modified form shown in Fig. VI illustrates the curbing element 1'? provided with a lateral cutout 18 as the space to be occupied by a fish plate and will evidence applicants recognition that other suitable modifications should be made to some of the curbing elements to adapt them to frogs, switches, etc.

I claim 1. The method of making a railway construction which consists in temporarily supporting elongated rail curbing so as to extend lengthwise alongside of the inner sides of a pair of parallel rails forming a track, and so as to be spaced therefrom, and then supplying an induratable mass of material underneath said curbing.

2. The method of making. a street railway which consists in supporting elongated rail curbing elements in an elevated position and so that their longitudinal dimensions are substantially parallel to and spaced from a pair of parallel rails respectively, pouring pitch in between said adjacent rails and curbing elements and then laying a pavement underneath and between said curbing elements.

3. The method of making a pavement between the rails of a street railway which consists in temporarily supporting curbing on said rails in desired position inwardly adjacent to each rail, supplying an inclurated foundation for said curbing, and thereafter laying a pavement between said runs of curbing.

d. In a railway pavement construction intended for between the rails, the combination of two elongated curbing elements extending lengthwise, one inwardly adjacent each rail, each of said. elements being fashioned with an inclined and roughened surface, and indurated material between said elements and conforming to said inclined and roughened surfaces.

In a railway pavement construction intended to be located between a pair of rails, the combination of two concrete curbing elements each inwardly adjacent and spaced from one rail and provided with roughened bottom surfaces, and an indu rated support contacting said bottom surfaces.

G. The combination with a pair of trackforming rails, of two curbing elements wider than said rails and extending lengthwise along the inner sides of the latter re spectirely, said curbing elements each having a depressed upper surface adjacent a rail head to form in conjunction therewith a trough of adequate depth and width for any expectable movement of a car whee] flange and said curbing elements further more having their sides which are opposed to each other diverging in an upward direction and a pavement foundation laid both underneath and between said curbing elements.

7. The combination with a pair of parallelly spaced rails of two elongated curbing elements extending lengthwise alongside of said rails respectively, said curbing elements having their sides which are opposed to each other diverging in an upward direction, a yielding substance between said rails and curbing elements and pavement laid between said curbing elements and abutting the opposed sloping sides thereof whereby loads sustained by said pavement tend to move said curbing elements apart.

9. The method of making a pavement between the rails of a street railway which consists in temporarily supporting, inwardly adjacent though spaced from each rail, curbing elements the bottom surfaces of which are fashioned with longitudinally extending serrations and so that said bottom surfaces are elevated, supplying a yielding substance between said rails and elements and then packing a permanent induratable foundation material underneath said curbing elements.

Signed by me this 7 day of July, 1924.

MATTHEW F. BRAMLEY.

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