Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 708
tube oftin, allowing the edges to abut, and sharpening the ends of MECHANICAL OPERATIONS. 685 the tube by means of a fine file as shown in Fig. 653. Toprevent tearing the cork by the interruption of the cuttingedge at the seam of the tube, the edge is notched at thispoint as shown. A wire handle is… … Cork Perforator. a rule, advisable to purchase apparatus of this class ratherthan make it, a few hints on the construction of a bellows,a blowpipe, and a small furnace may not be out of place.The bellows and furnace are of the kind devised by Mr.Fletcher. In the construction of the bellows the…
Physics · Lantern projection · Electric apparatus and appliances
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