Benjamin, Charles Henry, 1856- [from old catalog], Hoffman, James David, 1868- [from old catalog] joint author · New York, H. Holt and company · leaf 314
CLVTCH. PUNCH AND SHEAR DETAILS 283 the clutch and the frame. The latter method necessitates ahollow shaft in order to obtain a rigid connection between thesleeve and the clutch and is not much used on small machines. 155. Punch, Die, and Holders.—In all punch and die work thedie is made a little… … A SLI^i NO H e.AZ>. V. I ! T ■i«f ¥ B SLirHUG HEAH. r^i ¥ r> s
Machine design
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