Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 28
^ face, 250 rotations per minute.Auxilliary drilling head for bond wire holes, extra. \V:m. Sellers & Co., Incorporated, Philadelphia, Pa. 23 Plate No. 15. … FIVE-SPINDLE DRILLING MACHINE.FOR 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…
Machine-tools · Machinery
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