45-inch loom has 5 per cent. added to 40-inch loom. 50-inch " 10 " " 45-inch " 55-inch " 10 " " 50-inch " 60-inch " 10 " " 55-inch " _Looms of Intermediate Width._--One per cent. per inch is to be deducted from 40 down to 30-inch loom; below 30 to 26-inch loom 5/8 per cent. per inch to be deducted. Above 40-inch and up to 45-inch loom, 1 per cent. per inch to be added, and all above 45-inch 2 per cent. per inch. _Narrow Cloth in Broad Looms._--Suppose a 40-inch loom should be weaving cloth 36 to 31-1/4 inches in width, take off one-half the difference between 40 and 35-inch loom price; and if weaving cloth 31 to 27-1/4 inches wide, take off one-half the difference between 40 and 30-inch loom price; or if weaving 41-1/4 to 46-inch cloth in a 50-inch loom, take off one-half the difference between 50 and 45-inch loom, and so on with all other widths. _Range of Cloths._-- 26-inch loom allowed to weave cloth up to 27 inches. 35-inch " " from 31 to 36 inches. 40-inch " " " 36 to 41 " 45-inch " " " 41 to 46 " 50-inch " " " 46 to 52 " _Basis of Calculations._--The calculations in the Blackburn list are based upon the picks counted by the glass when the cloth is laid upon the counter. Forty yards short stick to be taken as 39 yards long stick. To find price for a 44-inch cloth in 45-inch loom = 66’s reed, 44 change pinion, 528 dividend, 75 yards long, 34’s/36’s-- 12·25 Standard. Add 5 per cent. loom ·61 ----- 12·86 Add 2-1/4 per cent. reed ·28 ----- 13·14 Calculate in proportion to pick 16 to 12 = 9·86 Calculate proportion length 37-1/2 to 75 = 19·72 = List price. Double Deduct 10 per cent. = 1·97 ----- 17·78 = Present price. or from list under heading, 45-inch loom-- 66 reed, 37-1/2 yards = ·822 for 1 pick. 9·86 for 12 picks. 19·72 for 75 yards. SPEEDS OF SHAFTS, ETC. In calculating the speed of a shaft driven from another by pulleys or gearing, multiply the speed of the first shaft by the driving pulley or wheel, and divide by the driven one. A shaft makes 100 revolutions per minute and carries a 40-inch drum driving a 16-inch pulley on another shaft; the speed of the second shaft would be 250, thus:-- (100 × 40)/16 = 250.