US PATENT SUBCLASS 400 / 155
.~.~.~.~ Via electrical or electromagnetic means

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

139  DF  INCLUDING TYPE-SET-ASSEMBLAGE MOUNTED ON CARRIER AND RELATIVELY MOVABLE FOR SELECTION AND FOR IMPACT OF TYPE-FACE {11}
153  DF  .~ Imprint by movement of record-medium against type-face {3}
154  DF  .~.~ By hammer impacting record-medium against type-face on type-head (e.g., type shuttle, etc.) {3}
154.1  DF  .~.~.~ Including selection of type-face {8}
155.~.~.~.~ Via electrical or electromagnetic means {1}
155.1  DF  .~.~.~.~.~> Including plural-function actuation by electromagnet(s)

DEFINITION

Classification: 400/155

Via electrical or electromagnetic means:

(under subclass 154.1) Subject matter wherein said selecting mechanism includes an electrical circuit or an electromagnetic device connected to a type-head* that supports the type-face* elements.

(1) Note. The mechanism or circuit for this subclass may include a commutator, a solenoid, an electromagnetic coil, an induction coil, or other similar device used in the selection or choice of a type-face.