Aids Wireless Telephony.

New York Times 100 years ago today, June 22, 1913:
New Generator, It Is Predicted, Will Effect Wonders.
Special Cable to The New York Times.
    LONDON, June 21.— W. P. Durtnall, an English engineer, asserts that he has invented an electrical generator which will make wireless telephonic conversation an immediate commercial possibility.
    The generator is designed to produce a heavy current with an alternating frequency of 30,000 to 100,000 oscillations a second.
    It has hitherto been found impossible to construct such a dynamo for the purposes of wireless telephony.