Center line follower

Details Center line follower Center line follower

1981-01-23

1982-12-14

Reese, Randolph A.

Railways

Track layers

33149J, 104 7B, 104 8, 180131, E01B 2900

Patent

active

043632742

ABSTRACT:
An electromechanical device for sensing the center line of a track is disclosed. The track center line is previously marked out by a line of nails protruding upwardly from the ties and the center 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 center 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 top track operating devices are moved laterally conjointly with the center line follower thus to maintain the track operating devices at the correct lateral locations.

REFERENCES:
patent: 2929457 (1960-03-01), Langerak
patent: 3314373 (1967-04-01), Plasser et al.
patent: 3430723 (1969-03-01), Brooks
patent: 3492949 (1970-02-01), Brown
patent: 3706284 (1972-12-01), Plasser et al.
patent: 3724584 (1973-04-01), Varichon
patent: 4165694 (1979-08-01), Theurer
patent: 4170942 (1979-10-01), Theurer

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