. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . at any angle or all the wayaniund, and fastened where desired. The knee hasan adjustment up and down, graduated to 001 in.,and tlie saddle upon the knee has an adjustment toand from the cohuun graduated to OOl in. Whenused as a milling-machine the main spindle, 3 in. indiameter, does all the milling independent of thetelescoping spindle, which does all the boring anddrilling. JMilling arbors and chucks screw on to t
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . at any angle or all the wayaniund, and fastened where desired. The knee hasan adjustment up and down, graduated to 001 in.,and tlie saddle upon the knee has an adjustment toand from the cohuun graduated to OOl in. Whenused as a milling-machine the main spindle, 3 in. indiameter, does all the milling independent of thetelescoping spindle, which does all the boring anddrilling. JMilling arbors and chucks screw on to themain spindle as face-plates do on lathes. Tlie mill-ing-feed is driven from tiie overliead gears, which arenionnted on tlie milling-feed sliaft, and slide intoposition endwise upon feathered keys ; thereforecither of them may be engaged with tin; spindle-gears. Tlie feetl-shaft pulley is belted toffcd-cones. and Ihcse are connected to the platen by a pair of universal joints. There are 16changes of milling-feed, ihe j)laten is fed by power 24 in., and operates at angle adjust-ments as well as the usual cross-position. The elevating, cross, and traverse ailju-liiieiits arc. Fir». 2.—Circular attachment. MILLING-MACHINES. 509 respectively 18 in., 2-4 in., and 13 in, A circiilar milling attachment for this machine, shownin Fig. 3, is used in macliining gear-blanks, balance-wheels (which are milled between thespokes as well as the periphery), pistons, and such other circular pieces as need the whole orpart of their surfaces concentric to a given point. It is especially useful in duplicate workwhen many parts of the same character are required,
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
