The watchmakers' lathe, its use and abuse; a story of the lathe in its various forms, past and present, its construction and proper uses (1903)
Goodrich, Ward L. [from old catalog] · Chicago, Hazlitt & Walker · leaf 103
ig. 84. Screw Finishing Chuck. Fig. 86 shows a true taper chuck for holding laps, etc.,for truing up when they get out of round in use or need theshape changed for special purposes. The taper on the plugis made to coincide with that of the spindle of the pivotpolisher, so that the laps may be… … Fig, 85. Jeweling Chuck of Soft Steel. ing flat steel work which is very hard and from which, forvarious reasons, it is not desirable to draw the temper.Much work can be done in this way, with the proper sizesand shapes of laps, at a considerable saving of time overthe usual methods of flattening,…
Clocks and watches · Lathes
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