THE REED TAPER THE F. E. Reed Company, Worcester, Mass., uses in its lathe spindles the I in 20 taper (0.6 per foot) which the Jarno system is based on. The diameters of the Reed tapers, however, differ from the Jarno, and the lengths in most cases are somewhat less. The dimensions are given in the table below. B F. E. REED LATHE CENTER TAPERS TAPER PER FOOT = 0.6 INCH. TAPER PER INCH = 0.05 INCH WHILE the majority of American tool builders use the Brown & Sharpe taper in their milling-machine spindles and the Morse taper in their lathes, a number of firms, among them the Pratt & Whitney Company, Hartford, Conn., and the Norton Grinding Company, Worcester, Mass., have adopted the "Jarno" taper, the proportions of which are given in the accompanying table. In this system the taper of which is 0.6 inch per foot or 1 in 20, the number of the taper is the key by which all the dimensions are immediately deter |