DEVICE FOR THE REGISTRATION AND OR CORRECTION, RESPECTIVELY, OF THE POSITION OF TRACKS
A laser beam reference or datum in a track surfacer, liner or surveying apparatus is intercepted by a mask or sensor which is held in a measurably fixed relationship to the grade rail. This sensor is connected with the track lining or leveling tool, or a track position recorder or signaling instrume...
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Main Author | |
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Format | Patent |
Language | English |
Published |
28.02.1981
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Subjects | |
Online Access | Get full text |
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Summary: | A laser beam reference or datum in a track surfacer, liner or surveying apparatus is intercepted by a mask or sensor which is held in a measurably fixed relationship to the grade rail. This sensor is connected with the track lining or leveling tool, or a track position recorder or signaling instrument, and control signals from the sensor in response to laser beam impingement thereon operate the respective tool or recording or signaling instrument. |
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Bibliography: | Application Number: YU19700000139 |