Centre line follower

Details Centre line follower Centre line follower

E - Fixed Constructions

01

B

104/1, 341/97, 3

E01B 29/00 (2006.01) E01B 35/06 (2006.01)

Patent

CA 1123665

ABSTRACT OF THE DISCLOSURE An electromechanical device for sensing the centre line of a track is disclosed. The track centre line is previously marked out by a line of nails protruding upwardly from the ties and the centre line follower is moved by engagement with the rails to right or left to derive an appropriate electrical signal causing operation of a ram carrying the centre line follower in a direction to cancel the signal. A track operating device, such as a magnetic wheel for picking up tie plates from track that is being renewed; is disposed over each rail location and the two track operating devices are moved laterally conjointly with the centre line follower thus to maintain the track operating devices at the correct lateral locations.

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