| 摘要 |
A setting device, the preferred embodiment having, type printing wheels settable to different positions by electric pulses including a pulse producing device emitting pulses to a counting machine which emits a pulse to at least one of a plurality of solenoids, each one representing one order, and energizes the solenoids when the machine has received a pre-determined number of pulses from the pulse producing device, the number of pulses representing the symbols to be set. Each type printing wheel cooperates with one differential arrangement for each order which also includes one rotatable gear provided with teeth, one of which, via an intermediate coupling device, is engaged by the solenoid when energized, to be stopped in a position corresponding to the symbol to be set. Two driving rotatable gears of the differential arrangement rotate the type printing wheel and the rotatable gear provided with the teeth, respectively.
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