Modern practice of the electric telegraph : a handbook for electricians and operators (1874)
Pope, Frank L., 1840-1895 · New York : D. Van Nostrand · leaf 61
crease thelength of the key contact, especially when sending dots.For the same reason, the sounder levers in a repeatingapparatus should be adjusted to have as little motion aspossible. 77. Hicks Automatic Repeater.—This arrangement 48 MODERN PRACTICE OF THE ELECTRIC TELEGRAPH. dispenses with the… … Fig. 27. The main circuits pass through the relay magnets Mand M, thence to the repeating points / g and / g\attached to the opposite sounder levers respectively,and thence to the main battery and ground at Gr andG-. The platina points of the screws/ and/ are placedupon IT shaped springs, which, in…
Telegraph
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