Induction coils : how to make, use, and repair them including Ruhmkorff, Tesla, and medical coils, Roentgen radiography, wireless telegraphy, and practical information on primary and secondary battery (1901)
Schneider, Norman H. (Norman Hugh) · New York : Spon & Chamberlain ; London : E. & F.N. Spon · leaf 199
g. 57. Whenthe gas is turned off the valve rests uponits seat, as indicated in the cut. By a closureof the electric circuit at the turn-on button,two of the helices M P are energized, cans-mg the armature / to be lifted, thus, bymeans of the stem H, raising the valve Gfrom its seat into the dotted… … circuit to be broken at the spark points T U,resulting in a continuous sparking as longas the finger presses the button. The magnet Gas Lighting, 173 when raising the armature has also twistedor partially revolved it, so as to bring thenotch d in the armature over the end of thehook e, as shown in…
Induction coils · Radiography · X-rays
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