American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 92
he chord of the arcmeasured by the intersection of the line C D,therefore the full conditions for good polish-ing will be effected. It must be understoodthat a polisher, however well made, will leavethe surface of the polished work uneven, ifthe relative positions are not very frequentlychanged.… … obtaining this desired change of position, itis troublesome to get a good polish on thepinion leaves by means of circular polishers ;it might be done, however, if the whole framewas carried on a slide over the pinion, withjust vertical motion enough to give a slightdifference in the pressure. The…
Clocks and watches
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