MINIMUM H.P. REQUIRED TO DRIVE SHOP TOOLS Small screw-cutting lathe, 12 in. swing . ... Small punch and shear combined, 7 Ap in. x 1$ in. . . 0-79 ... X 6 in. , 680 ft. per minute 1 -55 Grindstone fdr stock, 42 in. x 12 in., 1680 ft. per minute .
|Title||:||The engineer's manual for designers, draughtsmen, toolmakers, turners, fitters, erectors, foundrymen and all those engaged in mechanical engineering|
|Author||:||Frederick James Camm|