American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 230
nding it theinterposing of the stopwork will be morereadily felt than with a strong stubbornspring. Secondly, I think it advisable, and practi-cally possible, to strengthen the teeth of thecentre pinion and barrel by giving them ashape more appropriate to their functions.Whenever one of these teeth… … shape would give the teeth about double thestrength, as it will be evident when lookingat the dotted lines marked a in the cut, with-out interfering in any way with the service ofthe parts. I feel persuaded that the generalemployment of this form for the teeth ofbarrels and centre pinions would…
Clocks and watches
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