. Illustrated catalogue and general description of improved machine tools for working metal . FIVE-SPINDLE DRILLING Girder Rails—Electric Motors. Especially designed for girder rails from 3 to 9 high. Arranged withthe three drills for splice-plate bolt holes, which are adjustable from 3 to 12,on one side; on the other side are two for bond wire holes which are adjustableeither horizontally or vertically. A special adjustable chuck for holding rails isprovided. Machines made right and left, wheels carefully protected and handlesconveniently arranged. Rail rests on lower flange, is s
. Illustrated catalogue and general description of improved machine tools for working metal . FIVE-SPINDLE DRILLING Girder Rails—Electric Motors. Especially designed for girder rails from 3 to 9 high. Arranged withthe three drills for splice-plate bolt holes, which are adjustable from 3 to 12,on one side; on the other side are two for bond wire holes which are adjustableeither horizontally or vertically. A special adjustable chuck for holding rails isprovided. Machines made right and left, wheels carefully protected and handlesconveniently arranged. Rail rests on lower flange, is securely clamped, andspindles are fed simultaneously by power ; quick hand adjustment for all with motors, starting boxes and wrenches. 24 Wm. Sellers & Co., Incorporated, Philadelphia, Pa. Plate No. EYE-BAR DRILLING MACHINE. Drilliiig-lieads counterbalanced by weights inside of uprights. Verticaladjustment of heads, lo. Height from floor to top of table, 27. Adjustablefriction feed for heads with quick hand traverse. Diameter of spindle, 2H-Ratio of back-gearing, sH to i. Maximum distance between heads to suitrequirements. Especially designed for bridge work. Eye bars put in from front andpassed out back when finished. Heads are united by steel bars and can slidefreely on bed ; the expansion of the bars being the same as that of the bridgelinks being bored, uniformity in length of finished work is assured. Work issupported upon projections from upright, hence strains are self contained. i \Vm. Sellers & Co., Incorporated, Philadelphia, Pa. 25 Plate No. 17.
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Keywords: ., bookcentury1800, bookdecade1890, bookidillu, booksubjectmachinery
