. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . chvaiies the rate of rotation of the knife is set at an angle to the log,with its bevel side next to it, thus en-abling the cutting edge to act at thecenter line or a trifle above it : and thisangle is maintained down to the small-est core which can be left. Vise : see Pipe-cutting Machinery. AVarper : see Cotton-spinning Ma-chines. WATCHES AND CLOCKS. V7atch- MAKING BY MACHINERY.—The prOCCSS now generall
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . chvaiies the rate of rotation of the knife is set at an angle to the log,with its bevel side next to it, thus en-abling the cutting edge to act at thecenter line or a trifle above it : and thisangle is maintained down to the small-est core which can be left. Vise : see Pipe-cutting Machinery. AVarper : see Cotton-spinning Ma-chines. WATCHES AND CLOCKS. V7atch- MAKING BY MACHINERY.—The prOCCSS now generally followed in making a modern watch is as follows : The plates, wliich are the foundation of the watch, are cut out by punches and dies, made specially for each design. In the main punch there are a number of small punches inserted, and so accurately placed that the exact position of the ^ holes required to be drilled are marked Fig i ^Pmioii cutting engine upon the plate. Then they are drilled, the plates are ground flat, the edges turned, and all parts to be turned out or recessed for wheels to set in, are done on special chucks, used in a proper lathe. The other 886 WATCHES AND CLOCKS.
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
