To Calculate the Counts of Yarn after Warping.—Divide the length by the weight and 840. A beam weighs 301lb., carrying 504 ends, each 14,256 yards long—
(14,256 × 504)/(301 × 840) = 28·41’s.
Having 375 pieces to make from the set of beams, which will probably weigh about 1300lb. for 30’s twist, to this add 25 per cent. for size =
(1300 × 325)/100 = 325
1300
——
1625
Divide by 375) 1500 (4lb. 5oz.
——
125
16
——
2000
4lb. 5oz. being about the size required (vide page 150).
Actual Size.—To find the size actually put on the yarn, subtract the weight of the unsized yarn less waste from the sized yarn—e.g.,
1639 Actual sized weight.
1300
——
339 = Weight of size.
1300) 33900 (26·07 per cent. actual.
2600
———
7900
7800
——
100
Counts after Sizing.—
(14256 × 2280) / (1639 × 840) = 23·61’s