Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 889
paring the message by perforating the characters in the strip of paper; (2), the transmitter, forcausing such characters to be sent in the form of electric waves through (3) the receiver, whichcarries forward a strip of paper, upon which the characters are recorded either by chemical decom-position… … The paper is prepared at a speed of from 18 to 20 words per minute. The Siemens-IIalske per-forator is similar to the Wheatstone. The Edison perforator consists of a keyboard of 28 keys.The depression of a key perforates the letter entire, and feeds the paper the proper distance forward.The paper…
Mechanical engineering -- Dictionaries
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