Warburg, James P. (James Paul), 1896-1969 · [Boston] The First national bank of Boston · leaf 37
ingthis being known as two-ply, three-ply, etc. Various effects are ob-tained by twisting different yarns together, and sometimes worsted andcotton strands are twisted together. The operation is done on a framesimilar to the spinning frame. In these and subsequent operations the Barber Knotter, a…
Cotton manufacture · Cotton trade
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