Apparatus for adapting an office machine to one-handed operation

Details Apparatus for adapting an office machine to one-handed operation Apparatus for adapting an office machine to one-handed operation

1979-02-21

1981-06-09

Bashore, S. Leon

Typewriting machines

Case-shift mechanism

Including key attachment for case-shift

B41J 2508, B41J 2900

Patent

active

042722039

ABSTRACT:
Apparatus for modifying a key-operated office machine such as a typewriter to adapt the machine to one-handed operation. A depressible bar member is shaped and dimensioned to be operatively positioned below and across the keyboard and a pair of mounting arms extend perpendicularly from the bar member toward an engaging horizontal edge of the machine cabinet. A key depressor is operatively associated with the bar and the arms and located above at least one of the keys of the machine such that the key is depressed when the bar is depressed. Means are provided for normally urging the bar member upwardly to prevent the key being depressed until downward pressure is exerted on the bar by the operator.

REFERENCES:
patent: 458522 (1891-08-01), Davis
patent: 566536 (1896-08-01), Rich et al.
patent: 751578 (1904-02-01), Wadewitz
patent: 843032 (1907-02-01), Powell
patent: 944590 (1909-12-01), Beyerlen
patent: 1413342 (1922-04-01), Loomis

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