How to Install Electric Bells, Annunciators, and Alarms. / Including Batteries, Wires and Wiring, Circuits, Pushes, Bells, Burglar Alarms, High and Low Water Alarms, Fire Alarms, Thermostats, Annunciators, and the Location and Remedying of Troubles

by Norman H. Schneider

Forms of Bell Gongs.

In order to provide a variety of sounds, bells are provided with gongs of various shapes.

[Fig. 10] shows the ordinary form of gong. [Fig. 11], a tea gong; [Fig. 12], a cow gong; and [Fig. 13], a sleigh bell.

Fig. 10 Fig. 11 Fig. 12 Fig. 13

A coil of steel wire is also used, as in [Fig. 14], which on being struck by the hammer gives a pleasant but not loud tone.

Fig. 14