The Vegetable Tanning Process - A Collection of Historical Articles on Leather Production. VariousЧитать онлайн книгу.
and much judgment is needed as to the exact “temper” or degree of dryness required for each of the operations. Such is a brief description of the usual methods, which, however, vary in detail in different yards.
Fig. 10. Striking pin and section.
Fig. 11. Butt rolling machine.
Fig. 12. Wilson’s striking machine.
The common American method is much simpler and rougher. The goods are dried completely after light oiling, damped back and piled to equalize, and rolled twice with pendulum rollers driven at a high speed, which give a good gloss, but not the even colour and freedom from wrinkles which is demanded in English leather.
1 Fuller information as to structure is given in the Lea. Ind. Laboratory Book, Chap. XIX.
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