ishing this ope- in manner siuilar to that already described. question: Why do men whistle? Women do not, although ration by new and ingenious mechanism, detailed reference Referring again to Fig. 1, at the crank pins of the pitmen, we could well tolerate anything from their lips but deter- to… … him as he whistled, without fear. He never hold between the cutting punch and die, a por- STILES AND PARKER'S DRAWING PRESS. had employed a whistler who was not thought- tion of the edge would be forced down into the ful and economical." drawing die on the descent of the punch. To obviate this, the…
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