. Illustrated catalogue and general description of improved machine tools for working metal . oved frictiondiscs. Compound swivelling slide-rest, with automatic cross, longitudinal, andangular feeds. All feeds engaged, disengaged, or reversed at the saddle withinconvenient reach of the operator. Easy hand adjustment of saddle by rack andpinion. Swing over bed, 72; swing over slide-rest, 6^% diameter. Ratio ofback-gearing about 50 to i; ratio of triple-gearing, 300 to i. Largest lift of cone-pulley, 24 diameter for 3^ belt. Complete with countershaft, wrenches, fullset of change gear, and ratch
. Illustrated catalogue and general description of improved machine tools for working metal . oved frictiondiscs. Compound swivelling slide-rest, with automatic cross, longitudinal, andangular feeds. All feeds engaged, disengaged, or reversed at the saddle withinconvenient reach of the operator. Easy hand adjustment of saddle by rack andpinion. Swing over bed, 72; swing over slide-rest, 6^% diameter. Ratio ofback-gearing about 50 to i; ratio of triple-gearing, 300 to i. Largest lift of cone-pulley, 24 diameter for 3^ belt. Complete with countershaft, wrenches, fullset of change gear, and ratchet lever for moving poppet-head. Fast and loosepulleys on countershaft, 20 diameter for 4 open and cross belts, and shouldmake 122 and 124 revolutions per minute. As shown in illustration, lathe is ar-ranged with bed in two parts, so as to form gap-lathe when required, bed beingsupported on shoe-plates at intervals, and arranged so that the long end may bemoved to form a gap for large work. See also Plate No. 79. \Vm. Sellers & Co., Incorporated, Philadelphia, Pa. 97 Plate No. 79. 1^^. 72 SELF-ACTING Screw-Cutting and Turning. Arranged as gap lathe to take work i6 ft. diameter b} 3 ft. face. Bed isparted and auxiliar}^ bed, carried upon two of the shoe-plates (which are extendedfor the purpose), supports special rest for turning the large diameters. This restis provided with ratchet feed, operated from a rock shaft, which is vibrated by acrank on the live head. For further particulars of lathe, see specification under Plate No. 7S. Wm. Sellers & Co., Incorporated, Philadelphia, Pa. Plate
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Keywords: ., bookcentury1800, bookdecade1890, bookidillu, booksubjectmachinery
