The Chocolate Record Player (1902), a Stollwerck gramophone, was a novelty toy designed to play chocolate discs. Stollwerck had been founded in Germany in 1839, and by the end of the century it was ...

FOR some time I have been experimenting with the gramophone sound-box, and I came to the conclusion that with a diaphragm nipped firmly between two rubber rings there was a tendency for a vibration ...