US3417922A

US3417922A - Devices for fixing railroad rails to their sleepers

Info

Publication number: US3417922A
Application number: US588562A
Authority: US
Inventors: Vaulry Jean Dargier De Saint
Original assignee: Paulstra SNC
Current assignee: Paulstra SNC
Priority date: 1965-11-05
Filing date: 1966-10-21
Publication date: 1968-12-24
Anticipated expiration: 1985-12-24
Also published as: FR1462466A; DE1534101A1; GB1117429A

Description

1953 J. DARGIER DE SAINT VAULRY 3,

DEVICES FOR FIXING RAILROAD RAILS TO THEIR SLEEPERS 2 Sheets-s 1 Filed Oct. 2 1966 Dec. 24, 1968 J. DARGIER DE SAINT VAU LRY 3,417,922

DEVICES FOR FIXING RAILROAD RAILS TO THEIR SLEEPERS Filed on. 21, 1966 2 Sheets-Sheet z United States Patent Oifice 3,417,922 Patented Dec. 24, 1968 3,417,922 DEVICES FOR FIXING RAILROAD RAILS TO THEIR SLEEPERS Jean Dargier de Saint Vaulry, Paris, France, assignor to Paulstra, Levallois-Perret, France, a French society Filed Oct. 21, 1966, Ser. No. 588,562 Claims priority, application France, Nov. 5, 1965,

7,495 Claims. 0. ass-292 ABSTRACT OF THE DISCLOSURE The present invention relates to devices for fixing railroad rails upon their supports (transverse and longitudinal sleepers and the like).

The chief object of the present invention is to provide a fixation device of this kind which absorbs vibrations and gives a high coefficient of safety.

According to the present invention, with such a device, the base flange of the rail rests upon a sole of rubber or another resilient material, preferably fitting tightly in a housing of the sleeper, and the web of the rail is held between two clips with the interposition of packings of rubber or another resilient material, of L-shaped cross section in such a manner that the pressure received from the clips is applied both to the web and to the upper face of the base flange of the rail, the edges of said base flange preferably remaining free.

According to another feature of the present invention the resilient packings are provided with flanges forming abutments to hold the clips and to avoid any slipping thereof.

According to still another feature of the present invention, the clips are cup-shaped and provided with ribs transverse to the rail.

A preferred embodiment of the present invention will be hereinafter described with reference to the appended drawings, given merely by way of example, and in which:

FIG. 1 is a cross section of a rail and its fixation device on a sleeper, the left hand half portion of said FIG. 1 being a cross section on the line AA of FIG. 2 and the right hand half portion a cross section on the line BB of FIG. 2;

FIG. 2 is a longitudinal vertical section corresponding to FIG. 1, the left hand half portion of FIG. 2 being a section on the line D-D of FIG. 1 and the right hand half portion a section on the line CC of FIG. 1;

FIG. 3 is a part sectional view of rubber packing of the device of FIGS. 1 and 2;

FIG. 4 is a side elevation of said rubber packing;

FIG. 5 separately shows, in plan view, one of the fixation clips of the fixation device.

It will be supposed that the rail is to be secured to a sleeper 1.

The base flange 2 of the rail is supported by a thick rubber sole 3 which preferably, as shown, is engaged in a housing 4 provided in sleeper 1, so as to prevent any slipping of said sole.

This housing 4, the edges of which are shown in FIGS. 1 and 2 at 5 and 6 extends into sleeper 1 to a depth sufficient with respect to the housings intended for the fixation of the clips which will be hereinafter referred to.

The surface of sole 3 is advantageously provided with channels or grooves 7 to improve the flexibility thereof.

In order to secure the rail in position, use is made of clips 8 intended to exert a pressure laterally both upon the web 9 and upon the upper surface 10 of the base flange of the rail. Between said rail and said clips 8, there are rubber packings 11, of L-shaped cross section, which bear both upon the web and upon the base flanges of the rail. Preferably, as shown, the side edges 12 of the rail base flange are free.

The clips are made of any suitable shape to permit of exerting the desired presurc upon the above mentioned L-sha-ped surfaces.

In order to avoid slipping of rubber packings 11, at least a portion of the surface of said packings adjacent to the clips is provided with flanges such as 13.

Packings 11 are advantageously provided with grooves 25 increasing their flexibility.

Preferably, as shown, the clips are cup-shaped, with transverse partitions or stiffening ribs such as 14, 15, 16, 17 extending as far as the bottom 18 of the clip. Thus the clip is divided into three chambers the central one of which is provided with an oblong hole 19 for the passage of a bolt 20. The bottom 18 of the clip is stepped at 26 so as to fit against the edges 27 of packings 11.

vRain in the above mentioned chambers can be evacuated through hole 19 or through holes 21.

Finally, between every clip 8 and the walls 22, 23 of the housings intended to accommodate them in sleeper 1, there is preferably interposed at least one thin sheet of rubber 24 which permits compensation of the irregularities in the surfaces in contact. Bitumen may also be used for this purpose.

The device according to the present invention, when the bolts such as 20 are tightened and provided that the re spective thicknesses of sole 3 and packings 11 are suitably calculated, permits of ensuring and maintaining contact of the resilient elements with the clips and the base flanges of the rails when a train, even very heavy, passes along the rails, fixation of said rail being thus obtained without possible tipping of the latter.

The device according to the present invention reduces the noise, keeps exactly the distance between the rails of the track and permits of establishing track circuits.

In a general manner while the above mentioned description discloses what is deemed to be a practical and eflicient embodiment of the present invention, said invention is not limited thereto as there might be changes made in the arrangement, disposition and form of the parts without departing from the principle of the invention as comprehended within the scope of the appended claims.

What I claim is:

1. For fixation of a rail having a base flange and an upstanding web to a support provided with a housing having a bottom and upwardly and outwardly inclined side walls, a device which comprises, in combination:

a sole of resilient material mounted in fixed position on a part of the bottom of said support and adapted to support the rail base flange, with the edges of said rail base flanges left free,

two clips, each including a bottom portion, mounted in said housing respectively on opposite sides of said rail, said clips including stiffening means and being rigidly secured, by fastening means, to said support, with their said bottom portions cooperating with another part of the bottom of said housing than the part on which said sole is mounted,

two resilient material packings tightly held between said clips, respectively, and said rail, said packings being of L-shaped cross section and bearing upon substantially the entire height of the rail web and relatively thin resilient sheet provided between said clips and the cooperating surfaces of the support in which said upon substantially the entire width of the upper face of the rail base flange,

said clips each having an upwardly and outwardly inclined side wall respectively corresponding to and adapted to cooperate with an upwardly and outwardly inclined side wall of said support housing, whereby tightening of said fastening means urges said clips downwardly and inwardly so that said clips apply pressure downwardly and inwardly against said resilient packings.

2. A device according to claim 1 wherein the clips are cup-shaped, and said stiffening means comprise ribs transverse to the rail.

3. A device according to claim 2 wherein the cupshaped clip is divided into three chambers, and said fastening means comprises a bolt engaged in the central chamber for fixation to said support.

4. A device according to claim 2 wherein said cupshaped clip is provided with holes for the evacuation of rain water.

5. A device according to claim 1 further including a clips are fitted.

References Cited 5 UNITED STATES PATENTS 3,223,328 12/1965 Moses et al. 238 349 2,944,740 7/1960 Burkhardt 238292 2,719,676 10/1955 Prater 238283 10 892,789 7/1908 Williams 238-283 878,588 2/1908 Wolhaupter 238-383 FOREIGN PATENTS 1,228,130 2/1959 France. 15 1,137,820 10/1955 France.

US. Cl. X.R.