Appleton's cyclopædia of drawing, designed as a textbook for the mechanic, architect, engineer, and surveyor (1866)
Worthen, William Ezra, 1819-1897, [from old catalog] ed, Appleton, firm, publishers, New York. (1866. D. Appleton & co.) [from old catalog] · New York, D. Appleton and company · leaf 220
equal to the pitchof the wheel. To draw the arms, from the centre C, with the radius C u equal to thepitcli, describe a circle ; draw all the radii, as C L, wliich arc to form tliecentre lines of the arms, and set off the distance L v, equal to | pitch, oneach side of these radii at the iniier… … r L A T E X A 111. 176
