Leather Manufacture a Practical Handbook of Tanning Currying And Chrome Leat
Leather Manufacture a Practical Handbook of Tanning Currying And Chrome Leat
Alexander Watt
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When this was done, the mixture was poured into the vat, and the whole thoroughly plunged. No more liquor was employed than would be sufficient to cover the 100 hides when thrown in. The lime was kept up to summer heat by the application of steam. The handling was performed once or twice a day, if thrown into the vat as usual. Mr. Schultz says, " There is no doubt that it is a good method of unhairing for any hides or skins, and when a soft and smooth grain is desirable it is a valuable improve...ment. Of course, it is slightly more expensive than pure lime, and, for this reason, has not found general favour. " The soda ash in this process combines with a portion of the lime, forming caustic soda. By another process the hides, after the usual preparation, are thrown into a strong lime for 8 or 10 hours, when they are taken o ut and immersed in water up to 1 1 1 . The warm water soaks, softens, and swells the roots of the hair, and has much the effect of the " scalding " applied to hogs. " So little lime permeates the inner fibre, that, after a slight wheeling, the hides may be thrown into cold water and allowed to cool and plump preparatory to taking their place in the handlers.
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