Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 125
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… … REAR VIEW OF PATENT DRILL-GRINDING MACHINE. Showing the supplemental machine for grinding drills from tV to lir. Thefast and loose pulleys on the machine are 5 diameter, 3 face, and must be madeto run about 560 revolutions per minute. Wm. Sellers & Co., Incorporated, Philadelphia, Pa. Unversal…
Machine-tools · Machinery
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