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Gustav Korytowski
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Measurement Of Mechanical Vibrations Or Ultrasonic Waves
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Abstract
23,890. Korytowski, G. Nov. 30. Phonographs and like sound-recording instruments.-Holders for the needles or tracers of phonographs, gramophones, &c. are constructed as magazines as described in Specification No. 16,085, A.D. 1899, but have the clamping-screw provided with a lever f carrying a spring y which projects into the path of the needle c when the screw is released. The tube a is split t) allow free movement of the needles.
GB189923890D1899-11-301899-11-30Improvements in Holders for the Needles or Tracers of Sound Reproducing Apparatus.
ExpiredGB189923890A
(en)