Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 661
he placing of the up-per shear at an angle may be cut toany extent. The reversing or stopmotion may be so set that any givennumber of plates may be divided to a fixed distance. The upward movement of the shear is effectedby means of the pivoted links D. For shearing curved plates, curved shears are… … QUARRYING MACHINE. 631 shown. This class of machine is especially suited for cutting metal in curved form. The apparatusrepresented is capable of dividing plates .7 inch thick. PYROMETER. An instrument for determining degrees of heat higher than those which can bemeasured by ordinary thermometers.…
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