The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 97
-pieces of receivers are made of it,and as it is very tough and strong it withstands the roughusage to which this part of a receiver is peculiarly liable. CHAPTER V TRANSMITTERS IN PRACTICAL USB As stated in Chapter III., the transmitters used in commonpractice are all variations of some form of… … Fig. 62 second the Crossley, and of the third the Hunnings,transmitter. Blake Transmitter.—This was invented very soon after themicrophone, and for a number of years was more extensivelyused than any other kind of transmitter. It has now, how 74 TRANSMITTERS IN PRACTICAL USE 75 ever, given place to…
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