Dual control trailable railway switch machine

Details Dual control trailable railway switch machine Dual control trailable railway switch machine

B - Operations, Transporting

61

L

346/77

B61L 5/06 (2006.01) E01B 7/00 (2006.01)

Patent

CA 1189180

ABSTRACT OF THE DISCLOSURE A trailable railway switch machine which may be selec- tively power or manually operated for moving the switch points between their normal and reverse positions. The switch machine includes an energizeable electric motor, an electromagnetic clutch and a gear train transmission module for power operation. The switch machine includes a latchable hand throw lever for manual operation. The hand throw lever and gear train transmission are geared to a drive shaft which is bevel geared to an output crank having a crank arm. The output crank is connected by an adjustable eyebolt to the throw rod which is connected to the switch points. The crank arm is connected to a spring toggle linkage which assists in moving the switch points and biases the switch points in their normal and reverse positions. A pair of cut-out and reversing switches are cam operated to provide for safe and reliable operation of the switch machine, and an overload protection relay senses excessive current to deenergize the motor during an overload condition.

403816

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