US3687366A

US3687366A - Railway track

Info

Publication number: US3687366A
Application number: US56375A
Authority: US
Inventors: Archibald Paterson
Original assignee: British Railways Board
Current assignee: British Railways Board
Priority date: 1970-07-20
Filing date: 1970-07-20
Publication date: 1972-08-29
Anticipated expiration: 1989-08-29

Abstract

A railway track of the kind in which the rails are supported on sleepers embedded in ballast, wherein adjacent sleepers of the track are interconnected preferably at their mid-lengths by a member such a plank or board extending longitudinally of the track and into the ballast of the track to assist in resisting movement of the sleepers laterally of the track.

Description

United States Patent.

Paterson 1 Aug. 29, 1972 [54] RAILWAY TRACK 1,588,985 6/1926 Nyberg ..238/105 Inventor: Paterson, London 1,43 l l BOdkll'l l gland 865,125 9/1907 Roberts et a]. ..238/105 1,126,538 1/1915 McNeil] ..238/105 [73] Assignee: British Railways Board, London,

England Primary ExaminerArthur L. La Point 2 Filed; July 20 1970 Assistant ExaminerRichard A. Bertsch [2]] Appl NO 56 375 Attorney-Sommers & Young [57] ABSTRACT [52] :LS. (g1 A railway track of the kind in which the mils are Sup 2 d 4 26 ported on sleepers embedded in ballast, wherein ad- 1 0 rc jacent sleepers of the track are interconnected preferably at their mid-lengths by a member such a [56] References Cited plank or board extending longitudinally of the track UNITED STATES PATENTS and into the ballast of the track to assist in resisting 410 933 9/1889 S 1 238/105 a movement of the sleepers laterally of the track. amue 1,138,510 5/1915 Simpson ..238/105 2 Claims, 3 Drawing Figures Patented Aug. 29, 1972 FIG.IV

FIG.2

A; PATERSON RAILWAY TRACK This invention relates to railway track and has for its object to improve the resistance of the track to lateral movement including thermal buckling in jointed or continuous rail track.

According to this invention adjacent ties of the track are interconnected by a member extending longitudinally of the track and into the ballast of the track to assist in resisting movement of said ties laterally of the track.

The interconnecting members may each comprise a plank or board of reinforced concrete, timber or other material and the plank or board may be arranged to locate at each end in a vertical slot or channel defined for example by a pair of horizontally spaced projections on the associated tie.

Advantageously the plank or board is located at the mid-length of the ties. The resistance to lateral movement of the plank or board will then be that provided by half the width of the track ballast irrespective of the direction of the lateral thrust on and the consequent lateral movement of the track. Such placement of the plank or board also avoids its interference with track tamping and consolidation.

In order that the invention may be readily understood, one example of railway track embodying the invention will now be described with reference to the accompanying drawing, in which:

FIG. 1 shows in plan view the general arrangement,

FIG. 2 is a section on the line II II of FIG. 1, and

FIG. 3 is a section on the line lIl-III of FIG. 1.

Referring now to the drawings, concrete ties l supporting the rails 2 through seats and fixing devices (not shown) are each formed at about their mid-length with a pair of

projections

3 and 4 extending from each side thereof to define vertical channels. Extending between each pair of adjacent ties is a plank or board 5 which slidingly locates at its ends between the

projections

3 and 4 and extends into the ballast 6 of the track. Thus extending in line along the center of the track are a series of the planks or boards 5 and, in addition to the natural resistance of the ties embedded in the ballast to move laterally, any tendency of the ties to move laterally of the track is also resisted by the drag of the planks or boards 5 in the ballast.

When timber ties are used for the track, the ends of the planks or boards can be located in channel members spiked to the ties or can be provided with integral fixing brackets spiked to the ties.

lclaim:

1. Railway track apparatus for improving resistance of the track to lateral movement comprising,

a plurality of transversely extending ties spaced from each other along the track and embedded in a ballast bed,

a pair of rails supported on said ties,

and at least one plank extending longitudinally of the track between each pair of adjacent ties and being embedded edgewise downwardly into the ballast bed at least to the lower surface of the ties,

each said tie having a vertical slot on each side thereof to receive an end of one said plank which prevents relative lateral movement between the plankand the ties but permits vertical movement of the tie both upwardly and downwardly relative to the plank without causing vertical movement of 'd l k. 2. r l le ig g ai'atus of claim 1 in which said slot on said ties are substantially at the midpoint of the respective tie.

Claims

1. Railway track apparatus for improving resistance of the track to lateral movement comprising, A PLURALITY OF TRANSVERSELY EXTENDING TIES SPACED FROM EACH OTHER ALONG THE TRACK AND EMBEDDED IN A BALLAST BED, A PAIR OF RAILS SUPPORTED ON SAID TIES, AND AT LEAST ONE PLANK EXTENDING LONGITUDINALLY OF THE TRACK BETWEEN EACH PAIR OF ADJACENT TIES AND BEING EMBEDDED EDGEWISE DOWNWARDLY INTO THE BALLAST BED AT LEAST TO THE LOWER SURFACE OF THE TIES, EACH SAID TIE HAVING A VERTICAL SLOT ON EACH SIDE THEREOF TO RECEIVE AN END OF ONE SAID PLANK WHICH PREVENTS RELATIVE LATERAL MOVEMENT BETWEEN THE PLANK AND THE TIES BUT PERMITS VERTICAL MOVEMENT OF THE TIE BOTH UPWARDLY AND DOWNWARDLY RELATIVE TO THE PLANK WITHOUT CAUSING VERTICAL MOVEMENT OF SAID PLANK.

2. The apparatus of claim 1 in which said slot on said ties are substantially at the midpoint of the respective tie.