41 (#79) ############################################## CARDING AND CONDENSING between D and E representing the thin film of wool, the full width of the machine which, by the condensing apparatus, is split up into the required number of con- densed slivers E, the thickness, skeins or counts of these slivers being dependent upon the quantity of material fed into the card in relation to the number of threads and the " length / time” delivery from the card. * The Process of Carding.-Carding may be con- sidered as a further development of the willowing and teazing carried out in the blending room, but it is more illuminative to regard carding as the basic process and willowing and teazingas processes prepara- tory to this basic process. Under any circumstances there should be no sudden increase in the fibre disentangling activities of any of these sequential machines but a gradual increase in the search- ing activities of the carding teeth from the coarse toothed willow, the finer toothed fearnought, and the finely toothed carder; and the carder itself should be arranged on the same principle from feed end to delivery end, treating the material gently at first and gradually becoming more searching until the conditions are such that every fibre must have been separated from its neighbours. It is well here to realize that the carding efficiency of a set of machines depends upon : (1) Extent of carding surface and the number of carding contacts. (2) The carding surfaces at the point of cylinder contact, dependent upon the sizes of the cylinders. (3) The mode of feed and delivery adopted. (4) The absolute speeds and the relative speeds of the cylinders. 41
25 26 Textile Machine Part
168 168 Textile Machine
171 171 Textile Machine
243 243 Textile Machine
257 257 Textile Machine Part
276 276 Textile Machine Part
153 154 Textile Machine Part
159 159 Textile Machine
163 163 Textile Machine