American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 243
uently called Genoese jewelry—whichcan be blanched in the same pickle, only itcannot be scoured. The structure is too frail toendure that hardship. It usually comes verywhite by heating it red hot, and plunging it inthe hot pickle. Care must be taken in heatingit, not to melt the delicate fragile… … DESCRIPTION or DRAWINGS. A and B, bevelled gearing as in ordinarytower clocks. D, shaft of wheel, B and C. C, wheel in which endless screw works. E, endless screw. F, ratchet wheel worked by click on end ofarmature. G G, dials. M M, magnets put in rtraight line witharmature, gives more power than…
Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
