V. PRINTING TELEos.Arns, The Essick ling Telegraph.—This is the invention of 31r, S. V. Essiek, of New York, and is being operated by the Essiek Printing Telegraph - Instead of employing the tape heretofore used a paper roll is employed having a width of 4 in., upon which the letters are printed in lines the width of the roll, so that they can be read in the same man ner as a page of ordinary print• The instrument, Fig. 2i), consists of a receiver which is operated by impulses re ceived from the line through a polarized relay winch operates a type-wheel. Four teen impulses represent the entire alpha bet, making a complete revolution of the type-wheel, which is capable of turning NO revolutions per minute, and by which it is claimed 50 words a minute can be printed. The roll of paper, which is continuous. is held in a frame which travels one space for each letter printed, and at the end of the line is automatically shifted back to the beginning of a new line, and at the same time advances the space dividing two lines. The impulses move the instrument,
and operate at the same time all the other instruments on the line. Any break in the wire, therefore, opens the circuit, which entails the breaking of the communication, so that the operator immediately becomes aware of it. The system, it will he seen, is so arranged that the transmitting oper ator records the message, not only at the other end of the line, but also at his own instrument, so that there is constantly available a copy of all the messages sent. The duplicating of the order• transmitted by the copy at the transmitting office is evidently a valuable feature in many departments, especially in railroad work, as it affords a check upon all orders transmitted.