US3347462A

US3347462A - Railway rail and fastening assembly

Info

Publication number: US3347462A
Application number: US556718A
Authority: US
Inventors: Pande-Rolfsen Per
Original assignee: Lockspike Ltd
Current assignee: Lockspike Ltd
Priority date: 1965-06-30
Filing date: 1966-06-10
Publication date: 1967-10-17
Anticipated expiration: 1984-10-17
Also published as: SE304769B; GB1047989A

Description

17, 1937 P. PANDE-ROLFSEN 3,347,462 RAILWAY RAIL AND FASTENING ASSEMBLY Oct 2 Sheets-sheaf. 1

Filed June 10, 1966 Oct. 17, 1967 p, PANDERQ| FSEN 3,347,462

RAILWAY RAIL AND FASTENING ASSEMBLY Filed June 10, 1966 2 Sheets-Sheet 2 United States Patent 3,347,462 RAILWAY RAIL AND FASTENING ASSEMBLY Per Pande-Rolfsen, Oslo, Norway, assignor to Lockspike Limited, London, England, a British company Filed June 10, 1966, Ser. No. 556,718 Claims priority, application Great Britain, June 30, 1965, 27,813/65 2 Claims. (Cl. 238-349) ABSTRACT OF THE DISCLOSURE A concrete railway sleeper has four separate sheet metal retaining members fixed to it by virtue of each retaining member having two portions which extend into the concrete and were incorporated in the concrete before setting of the concrete. Each retaining member has between these portions a part forming an arch above the concrete and a part forming a bearing portion above the concrete. One rail is seated between and located by two of the arches and another rail is seated between and located by the other two arches. Four resilient clips are provided, each having a straight leg under one of the arches, another portion bearing downwardly upon the rail and another portion pressing downwardly upon one of said bearing portions. Pads of resilient material are interposed between the sleepers and the rails.

This invention relates to railway rail and fastening assemblies.

The word sleeper is used in this specification to denote what in the United States of America is often called a tie or cross tie.

The sleepers here concerned are particularly suitable for use with rail-fastening members each comprising a length of resilient metal of rod form which is bent so as to have, progressing from one end of the length of metal to the other, a first portion which constitutes a substantially straight leg, then a second portion in the form of a reverse bend, then a third portion extending generally in the direction of said one end, then a fourth portion which extends from the third portion, generally to that side thereof upon which said leg is disposed, and constitutes a further reverse-bend, and finally a fifth portion extending in the general direction towards the junction between the first and second portions, the configuration being such that when the fastening member is in situ with its first portion horizontal and it is viewed in plan, the third and fifth portions appear to be on opposite sides of said first portion. A rail-fastening member of the character set forth above will hereinafter be referred to as a rail-fastening member of the character defined. Such a fastening member is described in the specification of United States Patent No. 3,004,716 (Pande-Rolfsen).

According to the present invention, there is provided a railway rail and fastening assembly comprising two spaced, parallel rails, two pads of resilient material upon which the respective rails rest, a concrete railway sleeper extending transversely with respect to the rails with the pads resting on it, four separate sheet metal retaining members which are free from downward pressure due to the weight of the rails and are spaced apart along the sleeper and prevent any substantial movement of the rails along the sleeper, first portions of the retaining members forming four arches above the concrete whereby between the top of the concrete and the arches there are provided four substantially straight passages extending substantially parallel to the rails and one on each side of each rail, close to the rail, second portions of the retaining members each further from the adjacent rail than is the first portion of the same retaining member and each extending at an angle of 0 to 10 to the upper surface of the concrete and spaced from it by from zero to the thickness of the sheet metal of which the retaining member is made, third and fourth portions of the retain ing members which extend into the concrete and were incorporated in the concrete before setting of the concrete and which are so positioned that each retaining member has its first and second portions between its third and fourth portions, and four resilient rail-fastening members each having a substantially straight leg inserted in one of said passages, another portion bearing on one of the rails and a further portion bearing on one of said second portions.

Preferably the rail-fastening members are rail-fastening members of the character defined. It is preferable for them to be made of spring steel rods of circular crosssection at least 4 inch in diameter and, in most cases, at least 1 centimetre in diameter.

An example in accordance with the invention is described below with reference to FIGURES 1 to 4 of the accompanying drawings, in which:

FIGURE 1 illustrates a side view of an assembly comprising a concrete railway sleeper with two rails secured to it,

FIGURE 2 is a corresponding side view, on a larger scale, of part of the assembly,

FIGURE 3 is another side view of what is shown in FIGURE 2,

FIGURE 4 is a FIGURE 2, and

FIGURE 5 is a side view of an assembly which has been illustrated for purposes of comparison.

FIGURE 1 shows two flanges-footed rails 1 resting on plan view of part of what is shown in rubber pads 2 which are placed on the top of a concrete railway sleeper 3, the rails being parallel and crosswise with respect to the sleeper and spaced apart in accordance with the gauge of the track.

On opposite sides of each rail there are two passages in which are driven substantially straight legs 7, constituting the first portions, of two rail-fastening mem bers of the character defined. Each of these fastening members has its third portion, 8, resting on the rail base or flange and its fifth portion, 9, bearing upon a portion of a retaining member 19. The rail-fastening members are substantially the same as those illustrated in the drawings in the specification of United States Patent No. 3,004,716 and the numbers 7, 8 and 9 used above denote the parts 7, 9 and 8, respectively, in those drawings.

It will be seen that in each half of the length of the sleeper there are two of the passages spaced apart in the length direction of the sleeper by a distance a little greater than the width of the rail base or flange. Each passage is substantially straight and extends in the width direction of the sleeper and is open at both ends, although each passage could be open at one end only if desired. As can be seen more clearly from FIGURE 2, each passage is formed between the upper surface 11 of the concrete and a portion 12 of a retaining member, which portion 12 forms an arch above the surface 11. Just beyond each of the four arches, considered from the nearest adjacent arch, there is a further portion 13 which extends parallel to the upper surface of the concrete and in contact with that surface and it is upon this portion 13 that the portion 9 of the fastening member rests.

The retaining members prevent any substantial movement of the rails along the sleeper and they are free from downward pressure due to the weight of the rails, that is to say the rails do not bear downwardly upon them.

Each portion 12 of a retaining member and each portion 13 are between two

parts

14 and 15 of the retaining member, which parts extend into the concrete and were incorporated in it during casting of the sleeper, before the concrete had set.

The retaining members 10 are formed of sheet steel 12 millimeters thick. There are four of them in all.

The lower parts of the portions 13 could be bedded in the concrete so as to lie below the level of the majority of the upper surface 11 of the concrete. Instead of being parallel to the surface 11 of the concrete, the portions 13 of the retaining members could be inclined to it by an angle of no more than 10 and instead of being in contact with the surface 11 they could be spaced from it by no more than the thickness of the sheet metal of which the retaining members are made. Thus an arrangement such as is illustrated in FIGURE 5 is not in accordance with the present invention. It is considered that such an arrangement, with a greater spacing between the portion 13 and the surface 11, would not give adequate support for the portion 9 of the rail-fastening member.

If desired, intermediate members of electrically insulating material could be placed upon the flanges or bases of the rails, in which case the portions 7 of the rail-fastening members would bear upon these intermediate members and only indirectly on the rail bases or flanges. Also it is possible for the portions 9 of the rail-fastening members to bear upon the rail base or flange, or upon the intermediate members, and for the portions 7 to bear upon the portions 13 of the retaining members.

I claim:

1. A railway rail and fastening assembly comprising two spaced, parallel rails, two pads of resilient material on which the respective rails rest, a concrete railway sleeper extending transversely with respect to the rails with the pads resting on it, four separate sheet metal retaining members which are free from downward pressure due to the weight of the rails and are spaced apart along the sleeper and prevent any substantial movement of the rails along the sleeper, first portions of the retaining members forming four arches above the concrete whereby between the top of the concrete and the arches there are provided four substantially straight passages extending substantially parallel to the rails and one on each Cir side of each rail, close to the rail, second portions of the retaining members each further from the adjacent rail than is the first portion of the same retaining member and each extending at an angle of 0 to 10 to the upper surface of the concrete and spaced from it by from Zero to the thickness of the sheet metal of which the retaining member is made, third and fourth portions of the retaining members which extend into the concrete and were incorporated in the concrete before setting of the concrete and which are so positioned that each retaining member has its first and second portions between its third and fourth portions, and four resilient rail-fastening members each having a substantially straight leg in serted in one of said passages, another portion bearing on one of the rails and a further portion bearing on one of said second portions.

2. A railway rail and fastening assembly according to claim 1, wherein the four resilient rail-fastening members each comprise a length of resilient metal of rod form which is bent so as to have, progressing from one end of the length of metal to the other, a first portion which constitutes said substantially straight leg, then a second portion in the form of a reverse bend, then a third portion extending generally in the direction of said one end, then a fourth portion which extends from the third portion, generally to that side thereof upon which said leg is disposed, and constitutes a further reversebend, and finally a fifth portion extending in the general direction towards the junction between the first and second portions, said another portion being one of said third and fifth portions and said further portion being the other of said third and fifth portions.

References Cited UNITED STATES PATENTS 3,004,716 10/1961 Pande-Rolfsen 238-349 FOREIGN PATENTS 1,248,950 11/1960 France.

168,543 8/1961 Great Britain.

ARTHUR L. LA POINT, Primary Examiner.

R. A. BERTSCH, Assistant Examiner.

Claims

1. A RAILWAY RAIL AND FASTENING ASSEMBLY COMPRISING TWO SPACED, PARALLEL RAILS, TWO PADS OF RESILIENT MATERIAL ON WHICH THE RESPECTIVE RAILS REST, A CONCRETE RAILWAY SLEEPER EXTENDING TRANSVERSELY WITH RESPECT TO THE RAILS WITH THE PADS RESTING ON IT, FOUR SEPARATE SHEET METAL RETAINING MEMBERS WHICH ARE FREE FROM DOWNWARD PRESSURE DUE TO THE WEIGHT OF THE RAILS AND ARE SPACED APART ALONG THE SLEEPER AND PREVENT AND SUBSTANTIAL MOVEMENT OF THE RAILS ALONG THE SLEEPER, FIRST PORTIONS OF THE RETAINING MEMBERS FORMING FOUR ARCHES ABOVE THE CONCRETE WHEREBY BETWEEN THE TOP OF THE CONCRETE AND THE ARCHES THERE ARE PROVIDED FOUR SUBSTANTIALLY STRAIGHT PASSAGES EXTENDING SUBSTANTIALLY PARALLEL TO THE RAILS AND ONE ON EACH SIDE OF EACH RAIL, CLOSE TO THE RAIL, SECOND PORTIONS OF THE RETAINING MEMBERS EACH FURTHER FROM THE ADJACENT RAIL THAN IS THE FIRST PORTION OF THE SAME RETAINING MEMBER AND EACH EXTENDING AT AN ANGLE OF 3 TO 10* TO THE UPPER SURFACE OF THE CONCRETE AND SPACED FROM IT BY FROM ZERO TO THE THICKNESS OF THE SHEET METAL OF WHICH THE RETAINING MEMBER IN MADE, THIRD AND FOURTH PORTIONS OF THE RETAINING MEMBERS WHICH EXTEND INTO THE CONCRETE AND WERE INCORPORATED IN THE CONCRETE BEFORE SETTING OF THE CONCRETE AND WHICH ARE SO POSITIONED THAT EACH RETAINING MEMBER HAS ITS FIRST AND SECOND PORTIONS BETWEEN ITS THIRD AND FOURTH PORTIONS, AND FOUR RESILIENT RAIL-FASTENING MEMBERS EACH HAVING A SUBSTANTIALLY STRAIGHT LEG INSERTED IN ONE OF SAID PASSAGES, ANOTHER PORTION BEARING ON ONE OF THE RAILS AND A FURTHER PORTION BEARING ON ONE OF SAID SECOND PORTIONS.