US PATENT SUBCLASS 400 / 425
.~.~ Including jam-release means


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

383  DF  TYPE-BAR-ACTION MECHANISM OR TYPE-FACE ON TYPE-BAR OR TYPE-FACE INKER {19}
422  DF  .~ Type-bar action {12}
425.~.~ Including jam-release means


DEFINITION

Classification: 400/425

Including jam-release means:

(under subclass 422) Subject matter wherein a typewriter having type-bar* members that are movable from a rest position to a print-point* position is provided with means for freeing a blockage caused by two type-bars tending to occupy the same space at the same time.

(1) Note. The tendency for jamming is enhanced because all of the type-bars impress against the same print-point. Rapid typing will increase the probability that a previously impressed type-face* element will not have cleared the print-point before the succeeding type-face reaches the print-point, or the possibility that two type-face elements reach the print-point simultaneously. The resulting jammed condition is released by the means of this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

366, for other jam-release means.