US PATENT SUBCLASS 400 / 215.2
.~.~.~ With retardation of vibrator return after type-face impact (e.g., with dashpot)

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

191  DF  INCLUDING INTERPOSED INKING DEVICE (E.G., RIBBON) FOR RECORD-MEDIUM {15}
211  DF  .~ Including mechanism for shifting ribbon laterally at print-point {5}
215  DF  .~.~ By ribbon vibrator {5}
215.2.~.~.~ With retardation of vibrator return after type-face impact (e.g., with dashpot)

DEFINITION

Classification: 400/215.2

With retardation of vibrator return after type-face impact (e.g., with dashpot):

(under subclass 215) Subject matter wherein the vibrator* movement is regulated in such a manner that the ribbon* is temporarily held at its print-point* covering position for receiving successive type-face* impacts without completely uncovering the print-point after each impact.

(1) Note. This subclass provides for a disclosure wherein the print-point remains covered by the ribbon when typing at a normal rate, but if the typist stops typing, the vibrator moves the ribbon to permit viewing the print-point.