.~ For multi-incremental rotation (e.g., "platen sweep")
DEFINITION
Classification: 400/550
For multi-incremental rotation (e.g., "platen sweep"):
(under subclass 545) Subject matter wherein the typewriter is provided with mechanism to effect a plurality of increments of rotation greater than three such increments in one stroke of an actuating lever.
(1) Note. This subclass provides for mechanism to facilitate rapid line-spacing* and is often termed "platen* sweep" in the typewriter industry. It is used, for example, to feed a record-medium* piece into position for typing the first print-line* thereon after insertion of the piece into the typewriter, or for spacing a greater than usual distance between the last print-line of one paragraph and the first print-line of a succeeding paragraph. The number of platen-sweep increments are usually variable within a range or, for example, four increments to about 18 increments or more.
