The book of wonders : $b gives plain and simple answers to the thousands of everyday questions that are asked and which all should be able to, but cannot answer...
Science
The book of wonders : $b gives plain and simple answers to the thousands of everyday questions that are asked and which all should be able to, but cannot answer...
Curiosities and wonders; Encyclopedias and dictionaries; Questions and answers; Science -- Miscellanea; Technology -- Miscellanea
The cocoons are first assorted, those of the same color being placed
by themselves, and those of fine and coarse texture likewise. The
outside loose silk is then removed, as this cannot be reeled, after
which the cocoons are plunged into warm water to soften the “gum” which
sticks the threads together. The operator brushes the cocoons with a
small broom, to the straws of which their fibers become attached, and
then carefully unwinds the loose silk until each cocoon shows but one
thread. These three operations are called “soaking,” “brushing,” and
“cleansing.”
Into one or two compartments in a basin of warm water below the reel
are placed four or more cocoons, according to the size of the thread
desired. The threads from the cocoons in each compartment are gathered
together and, after passing through two separate perforated agates a
few inches above the surface of the water, are brought together and
twisted around each other several times, then separated and passed
upward over the traverse guide-eyes to the reel. The traverse moves
to and fro horizontally, distributing the thread in a broad band over
the surface of the reel. The rapid crossing of the thread from side to
side of the skein in reeling facilitates handling and unwinding without
tangling, the natural gum of the silk sticking the threads to each
other on the arms of the reel, thus securing the traverse. Silk reeled
by hand or foot power is known as “Re-reel” silk, while silk reeled by
power machinery is called “Filature.”]
[Illustration: A FILATURE--REELING THE SILK FROM COCOONS BY POWER
MACHINERY.[2]]
[Illustration: DRYING SKEINS OF SILK.]
[Illustration: THE SILK IS WOUND ON SPOOLS
WINDING FRAMES--WINDING THE SILK ON BOBBINS.]
~WHERE MAN’S WORK ON THE SILK BEGINS~
The raw silk is first assorted, according to the size of the fiber, as
fine, medium, and coarse. The skeins are put into canvas bags and then
soaked over night in warm soapsuds. This is necessary to soften the
natural gum in the silk, which had stuck the threads together on the
arms of the reel. Following the soaking, the skeins are straightened
out and hung across poles in a steam-heated room, as shown in the
accompanying photograph. When the skeins are dry, they are ready for
the first process of manufacturing. The room we now step into is filled
with “winding frames,” each containing two long rows of “swifts,”
from which the silk is wound on to bobbins. The bobbins are large
spools about three inches long. The bobbins filled with silk, as wound
from the skeins, are next placed on pins of the “doubling frames”;
the thread from several bobbins, according to the size of the silk
desired, is passed upward through drop wires on to another bobbin.
Should one of the threads break, the “drop wire” falls, which action
stops the bobbin. By this ingenious device absolute uniformity in the
size of silk is secured. The “doubling frame” is shown in one of the
photographs herewith.
Public-domain text, read in full here on John Shaqi.
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