Farrow's military encyclopedia : a dictionary of military knowledge . eunder drill spindle, 32 inches ; from floor to top oftable. 32 inches: fsom to center of drillspindle. 22 inches, or more, according to length oftiie sliding arm: from column to frcint of table 18inches; top surface of table. 14 inches wide by 18 JTOLTIPLE LimSS. 39G UITLTIFLIEB8. feet 4 inches in length ; table has a front or verticalsurface, 25 inches deep by 18 feet 4 inches in length;T-slots on both top and vertical surfaces for clamp-ing work ; vertical traverse of spindles, 13 inches:spindles balanced by weigh
Farrow's military encyclopedia : a dictionary of military knowledge . eunder drill spindle, 32 inches ; from floor to top oftable. 32 inches: fsom to center of drillspindle. 22 inches, or more, according to length oftiie sliding arm: from column to frcint of table 18inches; top surface of table. 14 inches wide by 18 JTOLTIPLE LimSS. 39G UITLTIFLIEB8. feet 4 inches in length ; table has a front or verticalsurface, 25 inches deep by 18 feet 4 inches in length;T-slots on both top and vertical surfaces for clamp-ing work ; vertical traverse of spindles, 13 inches:spindles balanced by weight attached direct to topof spindle; lias quick return by wheel and rack:has automatic gear feed suitalile for drilling orboring: driving cone 22x4j inches in diameter,to run 325 turns per minute, four or more sections ;each head has perfectly independent universal move-ment and an independent feed, also an independentfriction for stopping and starting; spindles aresteel; pinions and rack gearing are of steel; steelshafts and screws; all cut gearing; floor space oc-. cupied, 48 inches wide by 18 feet 8 inches long;total height to top of spindles, 9 feet; weight, 18,-000 pounds. The drawing shows a smaller toolwhich is used for general work. The spindles havehand and power feed; balanced, quick return bylever; lateral adjustment, can be run one or more atsame time, and at any desired speed, by arrange-ment of gearing; table has vertical adjustment byright and left screw; distance from spindle to col-umn. 7i inches; and with counter-shaft and pulleys,12 by Sk inches, to run 350 turns per , 850 pounds. See Drill Prem and GangBriih. MULTIPLE LINES.—It has been proposed, by somewriters, til throw )ip several lines of detached worksfor the defence of a position ; so that the troops inthe first line m;iy retreat under cover of the second,and so on. This arrangement, in the first |)laci, canseldom be made, without makfiiing the order nf bat-tle, and fherefore weakening th
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Keywords: ., bookcentury1800, bookdecade188, booksubjectmilitaryartandscience
