American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 253
the large drill chanceto be a little too small, and the hole require a little broaching, a very good broach is easilymade by turning a piece of wood to the desiredsize and fastening a piece of thin steel or apiece of a broken mainspring to it. The bestway to fasten the steel to the wood is to cut… … Figure 19 is a full sized outline of the cockrequired for the pallet arbor, and the only cockthat will be required for the regulator. It iscustomary, in some instances, to use a cock forthe scape-wheel and also for the hour-wheelarbors, but particularly for the scape-wheelarbor I consider that a…
Clocks and watches
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