American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 559
s recedes from the upper spring every time the former falls into thenotches on the break-wheel. To the right of Fig. 332 is the auxiliary box AB. It is known as the Speicherauxiliary box. In that box are placed two break-wheels, aw and aw. In practicethey are mounted on one shaft, although shown… … GAMEWELL FIRE ALARM BOX. uection with the wires leading to SB. Normally these strips are touching, thus short-circuiting the magnet am in SB, as stated. There are about 10 or 12 breaks, ornotches on the wheel aw. As it rotates, the lower strip ms falls into the breaks onthe wheel and rises out of…
Telegraph
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