. Illustrated catalogue and general description of improved machine tools for working metal . Ext 7-FOOT BORING AND TURNING M.^VCHINE—For Stei-i. , powerfully geared mill for tires aud other heavy steel work. Table dial max: justable saddle 42; two saddles with independent variable ratchet feed; vertical stroke J3; cross-head raised and lowered by-power; feed variable by J to ^s; self-contained, no independent foundation required; complete with countershafl, cranksaud wrenches. Fast aud loose pulleys 16 diameter, 4 belt, 195 revolutions per minute and 21S revolutions per luiuute respec-
. Illustrated catalogue and general description of improved machine tools for working metal . Ext 7-FOOT BORING AND TURNING M.^VCHINE—For Stei-i. , powerfully geared mill for tires aud other heavy steel work. Table dial max: justable saddle 42; two saddles with independent variable ratchet feed; vertical stroke J3; cross-head raised and lowered by-power; feed variable by J to ^s; self-contained, no independent foundation required; complete with countershafl, cranksaud wrenches. Fast aud loose pulleys 16 diameter, 4 belt, 195 revolutions per minute and 21S revolutions per luiuute respec-tively, giving 16 distinct table speeds. 76 Wm. Sellers & Co., Incorporated, Philadelphia, Pa. Plate No. 61. EXTRA HEAVY 5-FOOT MILL—Designed for Steel Work. Diameter of table, 6i. Height under cross-head in highest position, vertical slides, having 22 stroke. Two saddles on cross-head with inde-pendent feed-motions, operated b)^ feeding mechanism at each end of the cross-head. Feed mechanism and driving-gear provided with safety devices. Cross-head lifted by power. Spur driving-gear for table, all cut teeth. Feeds adjust-able from .01 to i per turn of table. Largest lift of cone-pulley, 24 and 4face. Wrenches, sample boring-bar, overhead countershaft, and counterbalancesfor vertical slides. 20 by 5 fast and loose pulleys on countershaft. Shouldmake no revolutions per minute. Self-contained; no separate foundationrequired for step or other parts. Wm. Sellkrs & Co., Incorporated, Philadei-phia, Pa. 77 Plate No. 62.
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Keywords: ., bookcentury1800, bookdecade1890, bookidillu, booksubjectmachinery
