[Bubier], Edward Trevert, 1858- [from old catalog] · Lynn, Mass., Bubier pub. co. · leaf 199
Figure 7, A. hole about ^-in. through the centre, next drill and tap a hole ^-in. in the centre of the core and fastenthe knob on and the core is complete. To fastenthe coil to the board, cut a groove in it of aboutys-in. deep and to conform to the diameter of thespool ends. Cut two strips of ^-in.… … 198 ELECTRICITY AND ITS shown in Fig. 7, B while the same view shows themattached. Make the handles, from which the shockis taken, of brass tube about ^ -in. outside diame-ter and about 3\-in. thick, turn two small discs ^-in.thick and drive them, one in each end of each tubeand solder them. To…
Electricity
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
