Britain at Work
A Pictorial Description of Our National Industries
År: 1902
Forlag: Cassell and Company, Limited
Sted: London, Paris, New York & Melbourne
Sider: 384
UDK: 338(42) Bri
Illustrated from photographes, etc.
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THE MANUFACTURE OF WOOLLEN AND WORSTED.
129
must first be scoured. All unwashed fleeces
carry a considerable amount of the yolk
or natural grease of the animal, and some
Australian and South American wools
contain as much as 60 per cent, of sand,
dirt, and grease. The washing is effected
by machinery in what is called a “ bowl,”
though it bears no resemblance to that
useful domestic vessel. The washbowl is a
long, deep iron trough, in which the wool
is immersed in a bath or “ sud ” of hot water
to be combed or carded, as the case
may be.
The combing machine is one of the
marvels of mechanical invention, and it has
several forms, but the type which has finally
been adopted in this country is known as the
great circle comb. It consists of a large brass
ring, about four feet in diameter, in which the
steel pins of the comb are set in concentric
circles, the strongest teeth on the outer ring,
the finest on the inner, there being usually
“ DRAWING.”
and soap, being slowly passed from one encl
of the trough to the other by a series of
reciprocating brass forks. The bowl has a
false bottom, into which the sand and dirt
settle by gravity. On emerging from the
end of the bowl the wool is squeezed
between rollers, and usually at once passes
into a second bowl, where, of course, the
water is cleaner, and often into a third
and even a fourth. When it finally emerges
it is pure and almost snow-white, though
still carrying many grass seeds, burrs, and
other entanglements. After drying by
subjection in a closed chamber to the
action of a stream of hot air, during which
time it is being constantly tossed like
the grass in a hayfield, the wool is ready
17
four or five such rings. The pins or teeth of
the comb, which revolves horizontally and
very slowly, are heated, and by an ingenious
arrangement of fluted rollers the wool is
gradually drawn through the teeth of the
comb from the outside, coming away from
the inner edge absolutely free from impurities
and with every fibre laid parallel with its
neighbour. The shortest of the wool is left
behind, and is automatically picked out of
the teeth of the comb before it receives a
fresh supply of wool. This short stuff is
called the noil, and the combed wool which
comes off in a continuous rope is coiled
up into a ball or “ top.” The top-maker,
then, is one who buys wool, sends it to
be washed and combed, and then sells the