SAFETY SWITCH OR CONDITION-RESPONSIVE-CUTOFF SWITCH FORELECTRICALLY POWERED TYPEWRITER:
(under the class definition) Subject matter wherein typewriter mechanism is driven with the help of force derived from electrical energy and wherein significance is attributed to a device for influencing a circuit through which the energy is supplied, said device being either for preventing the typist from being harmed, or for interrupting the circuit as a result or characteristic of the state of the environment or the occurrence of a predetermined event in a typewriter.
(1) Note. Examples of devices provided for in this subclass are a switch which cannot be placed in an "on" position unless a cover prevents access to the electrically powered mechanism, and a switch that will automatically turn the power "off" after a preset time interval if the typewriter is left unattended.
