Poole, Cecil Percy, 1863- · New York : McGraw · leaf 142
one for the purpose of building this one motor; buthe can easily make the punch and die and have the work done at some shopwhere such presses are in use. THE PUNCH The punch is built up in three pieces, a shank and holder plate ofcast iron, a punch pad of ordinary machine steel, and the punch… … 134 DESIGNS FOR SMALL DYNAMOS AND MOTORS being the same as that of the main portion of the opening in the die. Thepunch is, of course, of the same outline on its face as the complete openingin the die, and the upper part of it is to be made a very snug fit in the holein the punch pad. The latter is…
Electric generators -- Design and construction · Electric motors -- Design and construction
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