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 92
chuck and turned uptrue on the lathe by the watchmaker. The rings on thefaces of the brasses are added as a guide in placing thewheel before spinning it to center. Fig. 67 shows a ^-inchcement brass turned down for small work and a hole drilledin the shank to insert a pin for use as a wrench when… … Fig. 68. - Fig. 68 shows a solid steel chuck which is of the formgenerally used in watch factories. It is ground true allover and the airhole is put in for two reasons; it enablesthe wax to cool quickly, thus saving time, and it preventsthe heat from reaching the spindle of the lathe, which itwould…
Clocks and watches · Lathes
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