Low profile keyboard actuator

Details Low profile keyboard actuator Low profile keyboard actuator

G - Physics

08

B

197/1, 340/182

G08B 1/08 (2006.01) B41J 23/34 (2006.01)

Patent

CA 1143034

Title of the Invention LOW PROFILE KEYBOARD ACTUATOR Abstract of the Disclosure A low profile keyboard actuator for a typewriter is which L-shaped levers are pivotally mounted on a transverse shaft mounted immediately in front of the typewriter. The levers have generally horizontal arms of various lengths, the ends of which contact the keys of the various rows of the key- board. The levers have depending arms of uniform length and are resiliently biased to depress the keys. A common oper- ating bar bearing against the depending arms cyclically permits the levers to depress the keys and then restores the levers to the original position where no key is depressed: however, depression of all but a selected key is inhibited by a plural- ity of vertically superposed, transversely shiftable, binary- coded slides having teeth which bear against all depending arms except that one corresponding to the selected key. An electric keyboard mounted above the horizontal arms provides signals which shift the slides and actuate the common operating bar to permit depression of a corresponding key of the typewriter. These signals are alternatively provided from a data source for automatic operation of the typewriter. -1-

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