International Library of Technology · Scranton, International Textbook Co. · leaf 694
ed, showingthe magnet coils m, m! and the armature a. An adjustingscrew s is provided to regulate the stroke of the armatureand the consequent intensity of sound. The wires from thepush button and battery are secured at d and e, and on clo-sing the circuit, the rapid vibration of the armature… … Fig. C. 34. The circuit-closing devices used on bellwork usuallytake the form of a push, button. These are made in all sorts of styles. The very cheapones are seldom satisfactory.Bronze push buttons should beused where exposed to theweather. Fig. 7 shows the or-dinary round push button. Thewires…
Electrical engineering
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.], 1902, leaf 694](https://img.insideoutlibrary.com/img/1024/ia-electricengineer03inte-694-399.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-237-103.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-137-113.webp)
