The handy boy; a modern handy book of practical and profitable pastimes (1913)
Hall, A. Neely (Albert Neely), b. 1883 · Boston, Lothrop, Lee & Shepard co · leaf 184
. An Electric-Bell Outfit. The making of an electric-beU is simple and very interesting work, and with a home-made push-button such as that shown in Fig. 250, and two sal- ammoniac cells made in one of the ways described upon preceding pages, a boy can prepare a complete beU outfit. Figure 229… … Fig. 256. — Detail of Home-Made Electric-Bell Outfit Shown in Fig. 229. passes along the insulated wire and through the coils of wire of a horseshoe electro-magnei, which is a form of electro- magnet described later, and this magnet becomes magnet- ized and draws the bell hammer-arm, or armature,…
Handicraft · Toys · Amusements
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
