which is pre- motor is running with the spark advanced, pared in the perforating machine. The tape throw over the reversing lever as soon as is drawn at any desired speed through the the motor slows down, and cut in the igni- perforating machine under a pair of steel tion current again. The spark,… … size, which, for automobile use, is rated at the key. When a message has been perfor- Recording the Message Electrolytically on a Chemically-Prepared Tape, 20 horse-power. ated in the tape, the latter is passed through the transmitting machine. Here the primary per- As stated in a paper recently…
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