The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 98
osi-tion the button is pressed outwards by aspring, and the circuit is open. Whenpressed inwards, it closes the circuit.When released it springs backward andopens the circuit again. They are principally used for ringingbells. If the latter are of the automatictype, they ring as long as the button… … / 94 STANDARD ELECTRICAL DICTIONARY. constructed for use on floors to be pressed by the foot. The generalprinciple, of their construction is shown, although the method ofmaking the contact varies.Synonym—Press Button. Burning, {a) In a dynamo, the production of shifting andtemporary arcs between…
Electricity
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