Journal of the Franklin Institute; devoted to science and the mechanic arts (1826)
Franklin Institute (Philadelphia, Pa.) · Oxford, Eng. [etc.] Pergamon Press [etc.] · leaf 103
raint from packing. A mass of fusible metal placed at the bottom of the tube, will become fluid very nearly as soon as the flue takes the temperature of fusion of the alloy. To show when the metal at the bottom of the tube becomes fluid, a stem is attached with a cord and weight, or with a lever… … made to ring a bell, or, by appropriate attachments, to turn a cock, permit- ting just enough steam to issue to give the alarm, and then to be closed at once. A projection on the lower end of the rod prevents it from being drawn from the metal until this latter is fused, and by widening the lower…
Science · Patents · Meteorology · Technology
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