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George Murdoch
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Apparatuses For Generation Of Mechanical Vibrations
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Abstract
11,654. Murdoch, G. Aug. 12. Horns and trumpets, arranging and supporting.- The usual tone-arm and horn of a gramophone are replaced by a short wooden pyramidal amplifier A pivoted to the casing H at its larger end and carrying at its smaller end a short wooden transverse tube to which the sound-box F is attached. The amplifier is pivoted on an horizontal pin E to a small disk turning on a vertical pivot K, so as to allow the stylus to travel across the record G and also to be lifted off.
GB191511654D1915-08-121915-08-12Improvements in Talking Machines, Sound Recording and Sound Reproducing Instruments.
ExpiredGB191511654A
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