Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 219
causes to attract a small table with their opposite poles 4 in. piece of soft iron attached to the spring apart. Bridge the spaces with 2 files, and use the third for magnetizing. Fig. 120. Commencing at the centre of the file, rub it to one end of the file, then return to the centre and pass to… … cork k, through which are introduced To ring bell, move the brass slip ac, the wires p and n, of which p is covered working on a, to form ad; and upon with an insulating substance as far as moving bd, working on b, to form be, the bell will ring if your battery is strong the bent part. In the top…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
