Browse Prior Art Database

Adjustable Keyboard Mechanism

IP.com Disclosure Number: IPCOM000050148D
Original Publication Date: 1982-Sep-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 68K

Publishing Venue

IBM

Related People

Frank, EH: AUTHOR [+5]

Abstract

With the desire to permit keyboard orientation on a typewriter or similar device to accommodate operator comfort, the pivoted keyboard frame 10 is provided with two shafts 12 extending outwardly from the frame 10 to, in turn, support rotary cams 14 (Fig. 1). Cam 14 is provided with a plurality of dwells at predetermined radii or distances from shafts 12 to effect the spacing of shaft 12 from frame member 16, thereby controlling the angular position of the keyboard frame 10.

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Adjustable Keyboard Mechanism

With the desire to permit keyboard orientation on a typewriter or similar device to accommodate operator comfort, the pivoted keyboard frame 10 is provided with two shafts 12 extending outwardly from the frame 10 to, in turn, support rotary cams 14 (Fig. 1). Cam 14 is provided with a plurality of dwells at predetermined radii or distances from shafts 12 to effect the spacing of shaft 12 from frame member 16, thereby controlling the angular position of the keyboard frame 10.

By the rotation of cam 14 to the desired position, the angular position of keyboard 10 may be controlled.

An alternative approach which will eliminate the knurled cam knobs from protruding through the typewriter housing is shown in Fig. 2. In Fig. 2, the frame member 16 supports a sliding cam 20 which has not only sloping surfaces but dwells 22 to define the spacing between frame member 16 and shaft 12. The spreading of the distance between shaft 12 and frame 16 increases the angle at which the typewriter keyboard frame 10 is positioned relative to the typewriter frame member 16.

By sliding the cam member 20 by use of extension 24, the position of the keyboard frame may be oriented, as desired, by the operator at a plurality of different preselected or predefined positions. Slider 20 has detenting depressions 28 on the top elevating surfaces to retain the keyboard in the raised position.

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