US PATENT SUBCLASS 400 / 636.3
.~.~.~ Including feed-roller having equalizing or pressure-adjusting means

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}
636.3.~.~.~ Including feed-roller having equalizing or pressure-adjusting means

DEFINITION

Classification: 400/636.3

Including feed-roller having equalizing or pressure-adjusting means:

(under subclass 636) Subject matter wherein a feed-roller* is urged (or a plurality of feed-rollers are urged) toward an associated platen* by a mechanism, which mechanism is regulated so that (a) the force with which the feed-roller is urged (or any of the feed-rollers are urged) may be varied, or (b) the force with which either end of the feed-roller is urged (or either end of any of the feed-rollers is urged) may be varied so as to cause the ends of the feed-roller(s) to be urged with equal force.

(1) Note. In a pressure-adjusting mechanism the purpose is to adjust the spring force by which one feed-roller (or a plurality of feed-rollers) is biased against the platen or another feed-roller to increase or decrease the force over the platen. In a pressure-equalizing mechanism the purpose is to enable the feed-roller (or a plurality of feed-rollers) to be applied with equal force over the platen.