Alphanumeric section of office machine keyboards

Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including keys grouped to facilitate positioning...

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400 82, 400 88, 400472, 400682, 340365R, D18 1, B41J 508

Patent

active

045098735

ABSTRACT:
An adjustable alphanumeric keyboard based on ISO standard format and consisting of two flat key contact mounting boards, one left and one right, corresponding respectively to the section of the alphanumeric keyboard actuated by the left hand and right hand in touch typing, joined by a hinge at a point corresponding to the keyboard C row, between columns 05 and 06, the outermost end of one mounting board connected by a hinge to the keyboard case or chassis, the outermost end of the other mounting board free to move laterally and pivot in the same plane, with means available to position said movable end, in order to give the mounting boards an adjustable angle, peaking the rows of key contacts between columns 05 and 06.

REFERENCES:
patent: 546235 (1895-09-01), Luther
patent: 3879602 (1975-04-01), Walker
patent: 3926422 (1975-12-01), Wilson
patent: 3940758 (1976-02-01), Margolin
patent: 3990565 (1976-11-01), Felton et al.
patent: 4120039 (1978-10-01), Fischer
patent: 4378553 (1983-03-01), McCall
"Wallet Terminal Keyboard with Acoustic Coupler"; M. F. Davis, Jr. et al., IBM Technical Disclosure Bulletin; vol. 10, No. 3, pp. 188-189; Aug. 1967.

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