Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 560
e, d, thus affording a permanent support for these springs,which have a downward tension against these bushings. Themovable springs, g, also have a downward tension, which servesto keep their platinum contacts in engagement with the lowersprings. Two rubber plugs, k and k, are carried by the…
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