. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . 886 WATCHES AND Fig. 2.—Pivot-turning machine. such as pillars, bridges, etc., are then fitted and the plates put together. After all the fit-ting is done, the parts are dismembered, and gilded, and in some instances nickeled. The wheels are punched out in complicated dies, which act so as to i)erfoini several oper-ations at one stroke of thejiress. After punching,they are placed on what isknown as a wheel-
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . 886 WATCHES AND Fig. 2.—Pivot-turning machine. such as pillars, bridges, etc., are then fitted and the plates put together. After all the fit-ting is done, the parts are dismembered, and gilded, and in some instances nickeled. The wheels are punched out in complicated dies, which act so as to i)erfoini several oper-ations at one stroke of thejiress. After punching,they are placed on what isknown as a wheel-cuttingengine, a numlur of wheels—genenilly about oO or 40—being put ujiou an arborat one time, so that thecutter passes tlirough thewhole stack and cuts onetooth in each of the wheelsat each stroke of the ma-chine. After the teeth are cut,the wheels are bored,ground, and gilded ornickeled, as the case maybe, after which they areready to be staked or fast-ened to the pinions. Thepinions are cut in suitablelengths from a steel wire by a special cutter or die, made for that purpose, operated bya press similar to that used for the plates and wheels. These wire pinions are thenchucked in a lathe,
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
