American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 384
b. The theoretical arrangment of the coils and strips is shown in Fig. 249.The flexible strips cb cb are supported at x x\ respectively. On eac con-tact bar a sharp projection p p is fixed, opposite the set screw c c, on the pressureblock. R is the top of the rod which carries the block b. The… … \ 328 AMERICAN TELEGRAPHY.
Telegraph
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