Shorthand machine having electric platen advancement

Details Shorthand machine having electric platen advancement Shorthand machine having electric platen advancement

B - Operations, Transporting

41

J

197/101

B41J 3/26 (2006.01)

Patent

CA 1174633

SHORTHAND MACHINE HAVING ELECTRIC PLATEN ADVANCEMENT Abstract Of The Disclosure A shorthand machine including an electric drive sys- tem to advance the platen. In accordance with the inven- tion, the platen can be advanced in a fully mechanical, conventional mode, fully electric mode, or by a combina- tion of electric and mechanical drives. In the electric or electric/mechanical modes, after the shorthand machine operator makes a key stroke and releases the keys, an electric circuit pulses an electric motor connected to the platen to drive the platen for a predetermined dura- tion of time. Subsequent to the driving pulse, power to the motor is reversed to quickly brake the motor and bring it to a rapid stop. The duration of time that the motor is activated may be varied, varying the amount of advancement of the platen, and thus varying the distance between recorded key strokes for each word or part of word generated by the operator of the shorthand machine.

377867

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