American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 146
o riugs of differentmetals, and consequently of different dilata-tion, induced me to use a different way ofmaking these balances. By this process, thesteel and brass are soldered when in a flatstate; then nothing prevents the free dilatationof the brass; and the arms as well as theoutside ring are… … in Fig. 1. Between them is inserted a verythin sheet of silver soldering, and the whole isbound firmly with binding-wire. The hubhas got two dovetail cuts where the extremi-ties of the arms are inserted, and the wholeis exposed to the heat of a ga«-burner untilthe solder runs; the arms being then…
Clocks and watches
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