Handbook for machine designers, shop men and draftsmen (1916)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 298
34 1^ 516 If I If iSl 14 i^ 1^ l| ^h il 17- 34 12 3 8 l| li if 18 \ \ 5 2 IT^ if 19 78 916 3^ 2\ li i| 20 1 916 716 2i lA 2 21 I S8 \ 2f If In blanking work the die is made to the size of the work wantedand the punch smaller. In perforating work the punch is madeto size of work wanted and the die… … d= .iD+.^ in. r=.2D — iin. Fig. i6.—Hand wheels.
Machine design
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