Keyboard actuator for typewriters and the like

Details Keyboard actuator for typewriters and the like Keyboard actuator for typewriters and the like

1977-07-18

1979-03-27

Sewell, Paul T.

Typewriting machines

Including control of format and selection of type-face by...

400 70, 400474, B41J 530

Patent

active

041463366

ABSTRACT:
Actuators are positioned over the rows of keys in a keyboard to drive the keys in response to coded information from a computer or other source of digital signals. The mechanical driving force is transferred from solenoids positioned at one end of each row simultaneously to all of the actuators of that row. Additional solenoids positioned across the bottom of the keyboard sequentially unlatch selected actuators allowing them to drive their associated keys in response to the driving force. Additional solenoids are used to drive the shift mechanism and, if necessary, other individual keys.

REFERENCES:
patent: 638591 (1899-12-01), Murray
patent: 2282107 (1942-05-01), Watson
patent: 2433349 (1947-12-01), Drewell
patent: 3249199 (1966-05-01), Jones
patent: 3340985 (1967-12-01), Sinila
patent: 3837458 (1974-09-01), Bretti et al.
patent: 4050566 (1977-09-01), Webb et al.

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