American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 118
a form ofarrester that has been used a good deal in telegraph and telephone practice. Inthe figure, f is a small fuse wire carried on a thin strip of mica m, tipped with metalat each end, and held by metal clips as shown, c represents two small carbon blocksseparated by a thin sheet of mica. These… … The line wire is connected to L. Thus a heavy current coming from the line Avirewill fuse F, and a lightning discharge will jump to ground by way of the carbonblocks. When the fuse is blown the ndca strip is removed from the springs and anew strip is inserted. The effect of a lightning discharge…
Telegraph
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