Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 563
ribed, but embodies some very unique features in point of con-struction. These relays are of the tubular type, but the method of construc-tion differs radically from that of the ordinary tubular relay, for asingle iron casting is drilled out to take the place of ten tubularshells. The various… … FIG. 393.—STRIP OF TEN KELLOGG MINOR RELAYS—FRONT VIEW.
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