Safety lock for power driven machines

Details Safety lock for power driven machines Safety lock for power driven machines

1975-07-21

1976-12-14

Croyle, Carlton R.

Machine element or mechanism

Gearing

Toothed gear and recirculated unconnected elements

188 828, F16H 900, F16D 6300

Patent

active

039968081

ABSTRACT:
It is common practice in factories to provide a multiplicity of electrically operated belt or chain driven mechanisms, each controlled by one of a multiplicity of switches located in a common panel. When a mechanism is out of order and requires servicing, it is usual to throw its control switch to an open-circuited condition for the protection of a repairman. All too frequently, someone closes the wrong switch, thereby setting the idled machine into unintended motion so that a serious injury to the repairman results. In accordance with the present invention a massive wedging means is provided for application to a chain or belt in such manner that essentially all motion is positively prevented.

REFERENCES:
patent: 601047 (1898-03-01), Slingerland
patent: 2828833 (1958-04-01), Civello

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