Electric Bell
| View Cart ⇗ | Info
“An electric bell consists mainly of an electromagnet, E, and a vibrating armature that carries a hammer, H, that strikes a bell. One terminal of the magnet coils is connected to the binding-post, and the other terminal to the flexible support of the armature. The armature carries a spring that rests lightly against the tip of an adjustable screw at C. This screw is connected to the other binding-post. The bell is connected to a battery of 2 or 3 cells in series, a key, a push-button, P, or some other device for closing the circuit being placed in the line.” -Avery 1895
Source
Elroy M. Avery School Physics (New York: Sheldon and Company, 1895) 556
Downloads
2400×2278, 1.1 MiB
1024×971, 168.1 KiB
640×607, 85.5 KiB
320×303, 27.6 KiB