Railroad switch stand

Details Railroad switch stand Railroad switch stand

1989-01-09

1990-07-03

Butler, Douglas C.

Railway switches and signals

Switch stands

Gear actuated

246489, B61L 502

Patent

active

049384384

ABSTRACT:
A railroad switch stand for moving switch points between a pair of stock rails having a worm and gear drive connection between an operator driven input shaft and an output shaft connected to the switch points.

REFERENCES:
patent: 411998 (1889-10-01), Newman
patent: 531238 (1894-12-01), Warren
patent: 925345 (1909-06-01), Keeran
patent: 1366350 (1921-01-01), Beil
patent: 1380037 (1921-05-01), Breed
patent: 1763530 (1930-06-01), Latty
patent: 4337914 (1982-07-01), Rich
patent: 4824054 (1989-04-01), Kohake et al.

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