Turn-off interlock for tape and film machines

Details Turn-off interlock for tape and film machines Turn-off interlock for tape and film machines

1976-04-02

1978-02-07

Dobeck, B.

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Plural, diverse motor controls

318 60, 318369, 318 87, B65H 5938

Patent

active

040728790

ABSTRACT:
An interlock circuit is provided for tape and film machines which, when the high speed forward or reverse motors are in operation, prevents the main power from being turned off even though the operator might actuate the power switch. Instead of the power going off when the main power switch is operated during high speed operation, the machine continues to operate until the operator takes his hand off the fast forward or reverse drive switch, and then the brake is energized to stop the motion of the film or tape. When the brake cycle is complete, the power is then automatically turned off.

REFERENCES:
patent: 2938677 (1960-05-01), Flan et al.
patent: 3059160 (1962-10-01), Posselt
patent: 3218529 (1965-11-01), Evans et al.
patent: 3269670 (1966-08-01), Brian, Jr. et al.
patent: 3965401 (1976-06-01), Jones

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