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 510
r anchor is vibrated by an electro-magnet whose arma-ture is attached to the stem of the pallet. As the pallet is vibratedit turns the wheel and index one tooth for each single movement.There are as many teeth in the wheel as there are characters on thedial. The two instruments being in duplicate… … Fig. 312. Dial Telegraph. make and break mechanism, such as an ordinary telegraph key.The index moves by steps or jerks, so that the system is sometimescalled step-by-step telegraphy. In the cut the make and break transmitter is shown oXv v,with its handle and contacts g and /. This mechanism sends…
Electricity
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