American School of Correspondence · Chicago, American school of correspondence · leaf 52
dust, dirt and fine particles of cotton are discharged from thepicker by fans, through the galvanized iron pipes, H. Thesepipes are provided with an automatic closing damper, K, wliich is 42 … 9 o > S H O S <! -< CL, ,c < be o pi o u 3 25 CQ M =3 o < o &:; M a, Oh o *?^i^ COTTON SPINNING. kept open while the picker is running by the pressure of airin the pipe, but wlien the machine is stopped tlie pressure ceases,and the damper closes of its own weight, assisted by the…
Textile industry and fabrics
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