Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 262
bushings. In the perforations, a, in front of the strip, are insertedshort tubes, /, of brass. Each tube or thimble, /, is provided witha shoulder, which bears against a corresponding ledge in the per-foration, a, so as to prevent the tube from being thrust toward therear of the jack by the… … FIG. 212.—BOTTOM VIEW OF MULTIPLE J.\CK STRIP, duct, p—shown in dotted lines in Fig. 212—and thence through atransverse slot or saw-cut, a*, to the rear of the strip. In front of the thimbles, f, in the perforations, a, are placed thetest-rings, very short tubes of brass, g. These are forced into…
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