Pneumatic brake actuating system

Details Pneumatic brake actuating system Pneumatic brake actuating system

1979-10-01

1981-08-18

Taylor, Billy S.

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

188155, 254379, B66D 148

Patent

active

042842530

ABSTRACT:
A manually initiated, brake actuating system for immediate stoppage of the traveling block in a drilling derrick drawworks that overrides a conventional automatic drawwork safety control device. The system includes a normally closed, solenoid-controlled pneumatic valve mounted in an explosive resistant container between the system air supply and the pneumatic brake for the drawworks drum. A manually operated electrical switch, when actuated, simultaneously (1) energizes the solenoid to the emergency override pneumatic valve,and (2) de-energizes the drawworks power circuit, cutting off power to the drawworks motor.

REFERENCES:
patent: 2683020 (1954-07-01), Nickle
patent: 3677520 (1972-07-01), Koomey
patent: 3759489 (1973-09-01), Jones

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