Electric Chimes

Apparatus consisting of three small bells suspended from a horizontal conducting rod in connection with the prime conductor of an electric machine. The middle one is hung by a silk thread and connected with the ground by a chain. Between the bells are small copper balls, hung by silk threads. When the machine is in action the two outside bells, which are positively electrified, succe ively attract and repel the balls, which in turn are succe ively repelled and attracted by the middle bell, which has a negative charge by induction. The impacts produce a tinkling sound, which continues as long as the machine is in action.