An Improved Device for use with Gramophones and like Musical Instruments, for Producing Varying Effects in Sound.

摘要

1949. Parr, R. J. Jan. 27. Phonographs. - A device for directly damping the vibrations of the stylus-bar consists of a metal plate A having lugs B with screws C to clamp it to the sound-box. On the plate A are fixed two bars E, F sliding in guides G and carrying parallel projecting bars J, K respectively, which are faced with rubber or felt and envelop the stylus-bar. The bars E, F are connected by a link H pivoted at I to the plate A. A wire mechanism O attached to the bar E is adapted to move the parallel bars J, K towards, or away from, the stylus-bar.