US PATENT SUBCLASS 400 / 637.1
.~.~.~.~ Including concurrent control for disengagement of upper and lower feed rollers

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}
637  DF  .~.~.~ Including lower feed-roller(s) (e.g., pressure roller, etc.) {4}
637.1.~.~.~.~ Including concurrent control for disengagement of upper and lower feed rollers

DEFINITION

Classification: 400/637.1

Including concurrent control for disengagement of upper and lower feed-rollers:

(under subclass 637) Subject matter wherein a typewriter is provided with one or more feed-rollers* that are located adjacent to the underneath surface of an associated platen* and is further provided with one or more feed-rollers located adjacent to the topmost surface of said platen, and wherein both the underneath feed-rollers are simultaneously moved toward the platen or simultaneously moved away from the platen.