Woolen and worsted finishing; a practical manual of instruction in the methods and machinery used in finishing woolen and worsted goods in general, and the processes involved in the special treatment of all types of standard fabrics (1909)
American School of Correspondence, Timmermann, John F · Chicago, American School of Correspondence · leaf 101
Fig. 23. Cylinder and Cleaning Device of Double Acting Napper. Double=acting Napper. Another napper, Fig. 21, should bementioned in connection with the napping process, which differsmaterially from all others, and which may be considered as themost improved of its kind,— the double-acting napper.…
Woolen and worsted manufacture · Textile finishing
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