American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 261
of t, the surface, a, being outward and thescrews run in. It is then released, turned over,the periphery of y being grasped by the chuck,which brings d into the line of colliruation, and acutter is now approached which cuts away thescrew into the form x. This is a beautiful illus-tration of simple… … Split Lathe Chucks. The very general complaint of want of truthin the American spring chuck, must have somefoundation in fact, for it is hardly possible thatso general an agreement upon one fact could bethe result of accident; and certainly so widelyseparated individuals could not make thecharges…
Clocks and watches
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