Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 586
t to attach busy-back devicesto old ringing machines, originally furnished without them, and forthis purpose the Holtzer-Cabot Company has built a busy-back out-fit as a separate unit so arranged that it may be fitted to the shaft ofalmost any ringing machine. One of these devices is shown inFig.… … FIG. 406.—SEPAR.\TE BUSY-BACK ATTACHMENT. As is seen, the two machines are mounted on a heavy castiron sub-base common to both so as to maintain a permanent alignment ofthe bearings. In Fig. 408 a similar charging set is shown, the gen-erator being direct-connected to an alternating current motor,…
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