Safety detector for railroad switch points with visual indicator

Details Safety detector for railroad switch points with visual indicator Safety detector for railroad switch points with visual indicator

1992-05-26

1993-03-09

Werner, Frank E.

Railway switches and signals

Electric actuation

Switch signals

246162, 246476, B61L 510

Patent

active

051920387

ABSTRACT:
A safety detector for a railroad switch point having a detector mechanism which is to be secured to a stockrail at the switch point where the stockrail is intended to be in contact with a corresponding switchrail, in which the detector mechanism is adjustably secured in a housing located below the stack rail and has a spring loaded plunger assembly normally biased in the direction of the switchrail and reciprocably secured preferably beneath the stockrail in alignment with the switchrail at the switch point, electrical contacts connected to the plunger assembly for reporting contact or the lack of contact between the switchrail and the stockrail, and a contact on the switchrail at the switchpoint for reciprocating the plunger against the electrical reporting contacts when the switchrail is in physical contact with the stockrail at the switchpoint. Preferably, the detector mechanism also includes visual indicators for reporting whether the switch point is open or closed, and which may be solar or battery powered and may be capable of selective adjustment to warn operating personnel of the condition of the switch point.

REFERENCES:
patent: 500041 (1893-06-01), Swartz
patent: 763420 (1904-06-01), Owen
patent: 975922 (1910-11-01), Adams
patent: 1038450 (1912-09-01), Showalter
patent: 1781284 (1930-11-01), Karl
patent: 2740041 (1956-03-01), Marcum
patent: 4108405 (1978-08-01), Gibson
patent: 4986498 (1991-01-01), Rotter et al.

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