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American telephone practice (1905)

Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 110

An illustration from American telephone practice, 1905, leaf 110
his forms, with the mit. 7, and the washer,6, a very secure form of connector for the positive pole. Unlesssome such precaution as this is taken, corrosion soon sets m aroundthe metallic connection to the carbon, thus causing a poor con-nection. These cells are used to a large extent by the… … FIG. 66.-CARBON CYLINDER LECLANCHE CELL. in Fig. 67 principally in that the parts of the negative element arecontained in a canvas bag rather than in a porous cup of clay isshown in Fig. 68. This bag is suspended from the fiber plate form-ing the cover for the containing jar, which cover also has a…

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