Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 124
to be donequickly and without risk of drawing the temper of the drills. The benefit of having the lips and points of drills accurately ground isfound not only in superiority of the work, but also in diminished wear on themachines, and the less power required to drive and feed them. Having all… … FRONT VIEW OF PATENT DRILE-GRINDING MACHINE. WITH Pointing Attachment. Produces cutting edges of the correct shape on any kind of double-lip drillfrom tV to 3, without any alteration or adjustment of the holding devices tosuit different sizes and kinds, and reduces the thickness of the web at the…
Machine-tools · Machinery
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
