Vibration transmission mechanism for a phonograph

Claim 1

In a phonograph of the type comprising: a casing; a turntable rotatable with a record mounted thereon; a pivotally mounted pickup arm carrying a reproducing stylus adapted to follow a groove in said record during rotation of said turntable for receiving mechanical vibrations therefrom; a diaphragm rigidly supported by a portion of said casing; an intermediate vibrator provided with means for mounting same to said casing in a cantilever fashion between said pickup arm and said diaphragm, said intermediate vibrator being adapted to remain in sliding contact with said pickup arm throughout the course of its travel from a predetermined starting to a terminal position on said record for receiving therethrough the mechanical vibrations set up in said reproducing stylus; the improvement comprising: a lever pivotally supported at a point intermediate both ends of said lever by mounting means provided on said intermediate vibrator, said lever having one end thereof disposed opposite to said diaphragm; and means for applying a constant force to the other end of said lever for urging said one end thereof against said diaphragm, whereby the mechanical vibrations received by said intermediate vibrator are transmitted through said lever to said diaphragm to cause said diaphragm to produce corresponding sound waves.