Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . The cylinder, supported by an assistant upon a wooden rod, is therefore turned round two or threetimes in the curve of a bent iron, heated to redness, as shown in Fig. 2164, and a drop of water isallowed to fall upon the heated line, which fractures the glass and detaches the cap. In a similarmanner, but in a straight direction, a crack is made longitudinally, and the cylinder is then preparedfor spreading or flatting, Fig. 2165. Instead of cracking the cylinder by this means, t
Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . The cylinder, supported by an assistant upon a wooden rod, is therefore turned round two or threetimes in the curve of a bent iron, heated to redness, as shown in Fig. 2164, and a drop of water isallowed to fall upon the heated line, which fractures the glass and detaches the cap. In a similarmanner, but in a straight direction, a crack is made longitudinally, and the cylinder is then preparedfor spreading or flatting, Fig. 2165. Instead of cracking the cylinder by this means, the cap of thecylinder is sometimes taken off by winding around it a thread of hot glass, and after removing thelatter applying a piece of cold iron to any point which the thread covered. After trimming the otherend by cutting off about 2 inches in length with a diamond, the cylinder is split open longitudinally bydrawing along its inside surface a diamond attached to a long handle and guided by a wooden rule. Flatting is conducted in furnaces purposely constructed, the principal parts of one of whichare shown i
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Keywords: ., bookauthorbenjaminpark18491922, bookcentury1800, bookdecade1880
