Photocomposer motor speed control

Details Photocomposer motor speed control Photocomposer motor speed control

1974-07-03

1976-03-23

Rubinson, Gene Z.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318318, 354 10, 354 13, 354 16, H02P 500

Patent

active

039462943

ABSTRACT:
A system for establishing the speed of an electric motor, particularly a direct current motor. The principal use is in the control of a drive motor for a photocomposition machine font disc. The speed is controlled by spacing pulses of power to the motor. The pulses are derived from a central output of a left shift--right shift register. Shift in one direction is obtained from a uniform clock source, and in the opposed direction from a generator responsive to motor speed. When the motor speed causes the register to shift left beyond the control output, power is cut off and the motor slows. Slowing will allow right shift and a renewal of power pulses.

REFERENCES:
patent: 3154730 (1964-10-01), Houldin et al.
patent: 3268788 (1966-08-01), Branco
patent: 3330149 (1967-07-01), Scott
patent: 3590705 (1971-07-01), Moyroud
patent: 3820122 (1974-06-01), Hosterman
patent: 3821604 (1974-06-01), Walraven

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