Low profile switch machine with hand throw or motor throw select

Details Low profile switch machine with hand throw or motor throw select Low profile switch machine with hand throw or motor throw select

1994-08-19

1996-02-27

Oberleitner, Robert J.

Railway switches and signals

Switch stands

246406, 246407, 74665B, 74405, E01B 700

Patent

active

054942420

ABSTRACT:
A switch machine for railroad tracks is provided having a low vertical profile without increasing the axial length of existing switch machines. Also, the capability of being operated by an electric motor, hand crank or hand throw operation has been retained within these new dimensional constraints. A particular electric motor and gearbox combination permits a low overall profile due to its compact size. A worm gear shaft serves the dual purpose of driving a worm wheel and coupling to a hand crank, thus maintaining the low profile while increasing the functionality of the shaft. In addition, a hand throw drive shaft is provided adjacent to a crank drive shaft in order to provide a hand throw operation while further maintaining the low profile of the switch machine.

REFERENCES:
patent: 2311010 (1943-02-01), Vickers
patent: 2707230 (1955-04-01), Beltman et al.
patent: 2724289 (1955-11-01), Wight
patent: 3418462 (1968-12-01), Wilson et al.
patent: 3691371 (1972-09-01), Hylen

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