Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 217
bined drops and jacks, the drop andjack being associated so as to form a single piece of apparatus. Inthese the drop is so arranged as to be restored by some mechanicalmovement brought about by the insertion of a plug into the cor-responding jack. The Bell companies, where they use self-re-storing… … rin. ITS.—BELL SELF-RESTORING DROP. In Fig. 178 a side elevation and partial section is given of the elec-trically restoring drop of the Bell companies, this being the productof the Western Electric Company. In this, a. is a tubular electro-magnet, carrying on its rear end an armature, C, pivoted…
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