.~ Differentially positionable input element (e.g., lever)
DEFINITION
Classification: 234/121
(under subclass 120) Device wherein the responsive means comprises a member which is capable of adjustment to two or more positions, in each of which positions it generates a distinct signal or impulse effective to control the selection of tools to be actuated.
(1) Note. A differentially-positionable input element is typically a slide bar, a drum or a pivoted lever, by means of which a plurality of distinct tool-selection controls may be obtained, as distinguished from a simple key or pushbutton which has only one effective or control position.
(2) Note. The control signal or impulse of the subclass definition is to be distinguished from the input-impulse*
which effects adjustment of the movable input member.
(3) Note. In many cases, a visual guide such as a numbered scale, or a design to be reproduced, is associated with the positionable input device but does not of itself exert a control on the positioning of the input member (i.e., it is not a pattern*).
SEE OR SEARCH THIS CLASS, SUBCLASS:
40, for means to hold a picture or design to be traced by a manually-movable stylus controlling tool selections. 74, for a differentially-responsive pattern senser.
