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 247
t on a foot wheel is easily taken care of by properlacing and that of a round belt by twisting, and we there-fore consider all this adjustability a detriment. The speedpulleys on countershafts vary from 4^ to 5^2 inches indiameter, the larger diameter being preferred by many onaccount of the… … Fig. 218. watch work only need no adjustment in this respect, havinga more than sufficient movement allowed by the stud on theidler pulleys for any movement of the cutter or polisherspindles on work that is so short. In use the countershaft,and especially the speed pulley, must be kept true, or…
Clocks and watches · Lathes
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