he usual output. Allthe pinions, arbors, and barrels—in fact every part of anAmerican clock movement that requires turning—were for-merly done in this manner, at long rows of lathes in rooms,and by workmen set apart for the purpose. But perhaps itmay be well to mention that in the machine shops of… … No. 79. Automatic Pinion Drill of the Davenport Machine Company. 250 THE MODERN CLOCK. is among other machinists. In the large factories automaticturret machines are now coming into use and these areshown in Figs., 77, 78 and 79. The lantern pinions of an American clock have long beena mystery to…
Clocks and watches
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