US PATENT SUBCLASS 400 / 519.4
.~.~.~.~.~ With guard over settable parts (e.g., denominational jacks, etc.)

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

497  DF  WITH CONTROL OF "CARBON PAPER" FOR TYPING PLURAL SIMULTANEOUS COPIES BY SINGLE IMPRESSION (E.G., ON "MANIFOLD SET") {10}
513  DF  .~ Including relative movement between carbon paper and record-medium {5}
518  DF  .~.~ Carbon paper carrier(s) respositionable relative to platen {6}
519  DF  .~.~.~ Carbon paper carrier movable rectilinearly {3}
519.2  DF  .~.~.~.~ Including means to reduce binding of carbon paper during retraction {3}
519.4.~.~.~.~.~ With guard over settable parts (e.g., denominational jacks, etc.)

DEFINITION

Classification: 400/519.4

With guard over settable parts (e.g., denominational jacks, etc.):

(under subclass 519.2) Subject matter wherein significance is attributed to a structure on the typewriter that serves to protect various movable components from being moved unintentionally as the platen* is lifted.

(1) Note. The components that are apt to be moved unintentionally are usually located at the rear of the typewriter, near the path of movement of the manifold sets that are being fed to the platen, and are usually the denominational-stops* of the typewriter.