[Bubier], Edward Trevert, 1858- [from old catalog] · Lynn, Mass., Bubier pub. co. · leaf 185
hereader who wishes to construct an electric bell thefollowing directions are given. The appended sketch will give a general idea of RECENT APPLICATIONS. 183 the construction of the beli. The magnet as wilbe seen is simply a single coil of wire and is surrounded by a sheath of soft iron which forms… … disc i J inches in diameter and | of an inch thick.On the other end place a tight fitting washerof fiber or hard wood IJ inch in diameter and \inch thick, forming thus a spool on which to windthe wire. See Fig. 2. Insulate the iron parts carefully with paper shellaced on where the wire will touch…
Electricity
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