which should take a piece of steel turned a hole is bored through cast or wrought iron, is sur- to size, and complete a drill ready for hardening, al- prising. These are first-class goods, and are now in most at one operation. This was effected in May, use in most of our large shops, armories and… … MORSE'S TWIST DRILLS, COLLETS AND CHUCKS. or formed as to present a straight cutting edge to the Morse Twist Drill and Machine Go. All sines of drills caught and firmly hold. This pin Is applied at either metal, with a decrease in the angle of the groove as up to half-inch always on hand. The…
Claim · Combination · Patents · Set · Munn · Manner · Purpose · Constructed · Arranged · Patent office · Sand rock · Purpose set · Sand rocks · Purposes set · Hand spinning · Iron wire · Address munn · Scientific American · Originally inspected
Internet Archive · Public domain (published before 1931). Free to use for anything.
