156 (#212) ############################################ WOOLLEN AND WORSTED SPINNING . Example 2: Let S 40 3 X 2 X 60 Then P = = '0352 lb. per spindle per hour 40 x 256 of 40 skeins (theoretical production). Let DT = 9 Let T = 212 Then *0352 X 212 = '0339 lb. per spindle per hour of 40 skeins 9 + 212 (actual production). It should be noted, however, that this formula does not take into account the additional time taken owing to the additional twist. Thus it would probably stand :- Example 2a : S = 40 skeins 3 х 2 х бо х9 Р 40 X 256 X 13 = .0243 lb. per spindle per hour of 40 skeins. DT - 9 T Then .0244 +.212 = .023 lb. per spindle per hour for 40 skeins. 9 + 212 Such allowances as these, however, may be readily taken from actual practice and employed in the formula as shown. In Fig. 50 (b) the graph on this basis, based on Fig. 49 (a) but with doffing time taken into account and with no variation in production for varying twist, is given from I skein to 80 skeins. = 212 Having defined a method of obtaining the lbs. per hour per spindle, the spinning cost per lb. may now be readily ascertained. The requirements here are : (a) Total wages paid-say per week. 156
25 25 Textile Machine Part
52 52 Textile Machine Part
114 114 Textile Machine Part
131 131 Textile Machine Part
210 210 Textile Machine Part