. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Fig. 3.—Horizontal milling-machine. Beaman & Smiths Horizontal Spindle 31illing-Machine (Fig. 3) is intended for long andheavy cuts, such as guide-bars, connecting-rods, key-seating shafting, axles to 10 in. diameter,etc. The table is 14 in, wide, has three T-slots, moves by a cut rack, and is so geared as to beeasily operated by hand. The cross-head is gibbed to the housings, and is adjusted by a. Fig. 4.—Jlilling-
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Fig. 3.—Horizontal milling-machine. Beaman & Smiths Horizontal Spindle 31illing-Machine (Fig. 3) is intended for long andheavy cuts, such as guide-bars, connecting-rods, key-seating shafting, axles to 10 in. diameter,etc. The table is 14 in, wide, has three T-slots, moves by a cut rack, and is so geared as to beeasily operated by hand. The cross-head is gibbed to the housings, and is adjusted by a. Fig. 4.—Jlilling-machine. screw with graduated dial. The spindle runs in bronze bearings, is driven by a 3i-in. beltover a 16-in. pulley, through gearing in the ratio of 5 to 1, arranged for 4 speeds. Provisionis made for horizontal adjustment of cutters. The feed is actuated by means of a worm andgear. It can be thrown out by hand or stopped automatically, and is the full length of thetable. 510 MILLlNU-MACiJlXES. GranCs Double-Column Milling-Machine.—Yxg. 4 shows Grants double-column milling-machine, as huilt bv the Pratt & Whitney Co. More rigidity than is possible in a single-column machine isoV)tained in this bv placing the head-st<xk and foot-stock on a doublecolumn, and fitting the elevating slide l)etween the ui)rights with provision for clamping itfirmlv to each when in use. I?oth vertical and longitudinal adjustments of the table may bevaried miiiutelv bv aid of graduations in thousandtlis of an inch conveniently placed. Heeds Duubk-IIead JIillini/-Machiiie.—Yig
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
