Spinning Woollen And Worsted Being a Practical Treatise for the Use of All Pers
Spinning Woollen And Worsted Being a Practical Treatise for the Use of All Pers
Walter S Bright Mclaren
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157 knots altogether, bands are now made just the required length with a loop at each end, and the loops are fastened together with a little wire hook, and thus they run perfectly smooth. Opinions vary as to the duration and success of these loop-bands, but there can be no doubt the principle of them is a great improvement on the old system of knots. 134. Calculations for Twist and Speed. Having said so much about the twist, let us see how to tell what amount there is in any yarn, and how quick...ly the spindles revolve. To find the latter, take the dimensions of everything that affects it, and classify the " drivers " and " drivens " into two sets, according as an increase in size gives an increase or a decrease in speed. It will be found that there are five factors in the result. The speed of the driving shaft, the diameter of the drum on it, the dia- meter of the pulleys on the spinning frame end marked M in Fig. 39, and the diameter of the cylinder and wharl. The first, second, and fourth of these, if increased, give more speed ; therefore they are " drivers.
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