. Illustrated catalogue and general description of improved machine tools for working metal . ^ face, 250 rotations per drilling head for bond wire holes, extra. \V:m. Sellers & Co., Incorporated, Philadelphia, Pa. 23 Plate No. 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 ch
. Illustrated catalogue and general description of improved machine tools for working metal . ^ face, 250 rotations per drilling head for bond wire holes, extra. \V:m. Sellers & Co., Incorporated, Philadelphia, Pa. 23 Plate No. 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. 16.
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Keywords: ., bookcentury1800, bookdecade1890, bookidillu, booksubjectmachinery
