The Asiatic supply comprises the frozen China hides, which are clean
but small, with flaying of uncertain quality. There are the buffalo
hides from Asia and East Europe, which are suitable for cheap and sole
and strap leather, and also the dry-salted "E.I. kips," obtained from
a small breed of Indian cattle, and extensively made into upper
leather. The Asiatic humped cattle also provide a limited supply. The
African supply is of increasing importance. The tropical parts yield
dried hides of uncertain quality, but the more temperate parts of
South Africa yield a growing supply of good quality.
REFERENCES.
"The Manufacture of Leather" (Bennett), pp. 27-37.
"Principles of Leather Manufacture" (Procter), pp. 33-56.
"The Ox Warble or Bot Fly" (E. Ormerod).
"The Making of Leather" (Procter), pp. 2-22.
Section II.--THE PREPARATION OF PELT
Before hides are tanned it is necessary for them to pass through a
series of preparatory processes. The object of these processes is to
obtain from the hide the true hide substance in a pure and suitable
condition. Each class of leather has its own appropriate processes, the
adjustment of which largely determines the quality of the finished
article. So prominent is the influence of these preparatory methods that
the paradox "good leather is made before tanning" is in trade circles
almost a platitude. These processes, sometimes lumped together under the
general name of "Wetwork," comprise soaking, liming, beam house work and
deliming. These will be discussed in turn.
The term applied to the hide after these processes, but before tannage,
is "pelt."
=Soaking= has for its object the cleansing and softening of the hides,
chiefly by means of water. It aims at the removal of dirt, blood, dung,
and curing materials by washing. The process is usually simple, and is
much the same for all classes of leather. The ideal to be aimed at is to
restore the hide to its condition when it left the animal's back.
Cleanliness in leather manufacture is as essential at the commencement
as anywhere, for the hide is in its most putrescible state. The soluble
proteids (blood, lymph, part of dung, etc.) which always adhere to hides
encourage the rapid growth of putrefactive bacteria, and cannot be
washed away too soon. Dung is often difficult to remove, being caked on
the butt end amongst the hair. Soaking only softens it, and mechanical
removal is usually necessary. If such substances are not removed, they
go forward with the goods into the lime liquors, causing stains,
loss of hide substance, and counteracting plumping.
Public-domain text, read in full here on John Shaqi.
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