IE43786B1

IE43786B1 - Raikl securing means

Info

Publication number: IE43786B1
Application number: IE266176A
Authority: IE
Original assignee: Dow Mac Concrete Ltd
Priority date: 1976-01-08
Filing date: 1976-12-03
Publication date: 1981-05-20
Also published as: IE43786L; FR2337785A1; CA1057256A; GB1528241A; FR2337785B1; AU502118B2; AU2044876A

Abstract

1528241 Fastening railway rails to sleepers DOW MAC CONCRETE Ltd 1 Dec 1976 [8 Jan 1976] 00660/76 Heading E1G A pressed steel anchoring hoop, suitable for casting into a concrete sleeper to provide an upstanding shoulder and arch 4 respectively for two limbs of a torsion-rod rail fastening clip, has a pair of ribs 1 extending from the shoulder on either side of a leg 3. The hoop also has two further legs 5 and a central lug 2.

Description

This invention relates to means for securing rails to concrete sleepers..

One such means comprises an anchor which is eKibedded in the sleeper during the concrete casting operating and which incorporates an arched shoulder or a hole formed in a solid shoulder to receive a clip which emerges and holds the rail. Both pressed steel and cast malleable iron constructions have been employed heretofore. However, the pressed steel forms have not been entirely satisfactory since they do not provide as positive a location and do not fit moulds intended for use with cast anchors.

In accordance with the invention a rail clip anchor comprises an arcuate shoulder to receive on its upper side a clip which engages a rail, a single leg extending downwardly from one side of the shoulder for embedment in a concrete sleeper, a pair of further legs parallel with each other and spaced apart extending downwardly from the opposite side of the shoulder to the first leg and for embeddment in a concrete sleeper, two spaced apart parallel nibs providing abutment surfaces for a clip received by the shoulder and extending outwardly from the shoulder and lying one on either side of the first leg, and a lug extending outwardly from the shoulder in a direction opposite to the nibs and between the pair of further legs and providing means for locating the anchor in a mould for casting a concrete sleeper ο 7 8 6 therearound.

The invention will now be described in detail with reference to the accompanying drawings in which: Fig. 1 shows a side elevation of a clip anchor.

Fig. 2 shows a plan view of the anchor, and Fig. 3 shows an elevation of the anchor in the direction of the arrow A in Fig. 1.

The rail clip anchor shown in the drawings includes two spaced apart parallel nibs 1 extending from an arcuate shoulder 4 which receives the clip part (not shown) which engages a rail. The nibs lie on either side of a single leg 3 which, with two other legs 5 which lie parallel with each other on the opposite side of the shoulder is embedded in the sleeper concrete. Between the said other two legs 5 a lug 2 also extends away from the shoulder in the opposite direction to the nibs.

When a sleeper is cast the legs 5 fix the shoulder firmly in the cast concrete of the sleeper, and the single leg 3 is bent down away from the nibs thereby enabling the shoulder to conform with the shape of the pocket in the mould for casting the sleeper which is required to locate the cast metal shoulder that is more frequently used.

The recess formed by this separation of the single leg of the shoulder from the nibs 1 which are formed to provide a flat resting platform for the rail clip also provide a very useful restraint to prevent the clip vibrating out of position when it has been driven to the correct tension as once the clip is driven into this recess it has to be deformed before it can be retracted. 437SG

Claims

1. CLAIMS :1. A rail clip anchor comprising an arcuate shoulder to receive on its under side a clip which engages a rail, a single leg extending downwardly from one side of the shoulder for embeddment in a concrete sleeper, a pair of further legs parallel with each other and spaced apart extending downwardly from the opposite side of the shoulder to the first leg and for embeddment in a concrete sleeper, two spaced apart parallel nibs 0 providing abutment surfaces for a clip received by the shoulder and extending outwardly from the shoulder and lying, one on either side of the first leg, and a lug extending outwardly from the shoulder in a direction opposite to the nibs and between the pair of further 5 legs and providing means for locating the anchor in a mould for casting a concrete sleeper therearound.

2. A rail clip anchor constructed and arranged substantially as hereinbefore described and shown in the accompanying drawings.