15
634
Example.—Find the dividend of a loom with a rack wheel 60 teeth, stud wheel 100 teeth, stud pinion 12 teeth, beam wheel 75 teeth, beam 15 inches circumference.
rack stud beam wheel
60 × 100 × 75
12 × 60
stud quarter-inches
pinion in beam
= 625 mathematical dividend
9 = 1½ per cent.
634 practical dividend.
It is not possible by changing one wheel only to obtain any number of picks or fraction of a pick, as will be seen from the following examples:—
picks 50740 = 12·67
picks 50741 = 12·12