American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 113
r Squaring Arbors. The following cut represents a tool forthe purpose of perfectly squaring up a wind-ing arbor by the use of a common flat file andburnisher. A split spring arbor, C, fittinginto the head of the common bench lathe, thejaws of which close by the set screw, carriesupon it an index… … position by the set screw. This guide restmay be made of brass, being easily wrought.In the flat face of the cross head insert threehardened screws, flush, or nearly so, with thesurface, to insure perfect flatness in using thefile. To use this tool, place the arbor to besquared in the notch to…
Clocks and watches
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