American School of Correspondence · Chicago, American school of correspondence · leaf 230
with a draft of eight the sliver delivered at the front will weighfifty grains: 8 X 50• —^ =50 Now, if we drop out one sliver, we will have three hundred and … Fig. r36. Section of Railway Head Showing Evener. fifty grains only, entering the railway head and with the samedraft the delivered sliver will weigh 43.75 grains: ^X50 _ ■—-^ = 43.7o To overcome this difficulty, the railway head is provided with an3vener motion Mhich is shown in Fig. 136, Evener…
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