American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 226
are connected to the cores as indicated. The pole-pieces and coils are moved to and from the arma-ture by means of the adjusting screws s s. Thelocal contact point and back stop c c are movable in -<>a frame which is adjustable by the screw h. The mov-ing parts of this relay are much hghter…
Telegraph
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