US PATENT SUBCLASS 400 / 639.2
.~.~.~.~.~ Disengaged from platen by compound movement of bail (e.g., on double pivoted mount)

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

578  DF  SHEET OR WEB (E.G., RECORD-MEDIUM FEEDING MECHANISM) {13}
634  DF  .~ Including friction-feed means (e.g., band) {2}
636  DF  .~.~ By roller couple (e.g., rotatable pinch rollers, etc.) {8}
639  DF  .~.~.~ Including upper feed-roller(s) (e.g, pressure roller, etc.) {1}
639.1  DF  .~.~.~.~ Mounted on "paper bail" {1}
639.2.~.~.~.~.~ Disengaged from platen by compound movement of bail (e.g., on double pivoted mount)

DEFINITION

Classification: 400/639.2

Disengaged from platen by compound movement of bail (e.g., on double-pivoted mount):

(under subclass 639.1) Subject matter wherein the "paper bail" is normally closely adjacent to the platen* with which it is associated, but where the paper bail is supported so as to be moved out of its closely adjacent position, the movement being such as to combine two or more kinds of motion.

(1) Note. In this subclass the movement usually combines a reciprocatory motion with an oscillatory motion. In some typewriters, the paper bail is supported on an oscillatable member, which member is in turn supported on a second oscillatable member.