Journal of the Franklin Institute; devoted to science and the mechanic arts (1826)
Franklin Institute (Philadelphia, Pa.) · Oxford, Eng. [etc.] Pergamon Press [etc.] · leaf 303
ss cylinder, B, with the bore of which it has a correspondingaperture. The brass cylinder is about three inches in diameter, andsix inches in height, being inserted at its lower end into a block of 292 Hare on the Evolution of Boron. wood as a basis. This cylinder receives below, a screw, which… … closed at the upper termination by a cup of copper, of a shape nearlyhemispherical, and soldered at the upper edge, to the edge of the tube;so that the whole of the cavity of the cup, is within that of the tube. Hares New Valve Cock. 293 Hence the bottom of the cup is accessible to any body, not…
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