IMPROVEMENTS IN THE MANUFACTURE OF SEWING SILK AND OTHER THREAD AND IN MACHINERY THEREFOB."
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by William Trafford at the Office of
the Commissioners of Patents on the 24th November 1882.
WILLIAM TRAFFORD of Leek in the County of Stafford. "IMPROVEMENTS IN
THE MANUFACTURE OF SEWING SILK AND OTHER THREAD AND IN MACHINERY
THEREFOB."
The object of this invention is to produce an even sewing thread of great length,
free from knots, from raw silk or other fibrous material.
It is well known to raw silk thread manufacturers and throwsters that the fibre
varies considerably in thickness throughout its length and that it is necessary to
spin the silk in short lengths and afterwards weigh them to determine the size of
the yarn.
Now the first part of my invention relates to an improved mode of measuring,
weighing, putting the strands together, and doubling and the second part relates
to a mode of stretching the yarn to regulate the twist, measure and reel it into
skeins.
Supposing it is required to prepare, say a thread of six hundred yards per ounce
or No 20 size (when finished) I provide bobbins of equal weight which I place upon
spindles containing a small head at one end and a screw at the other.
These I place in brackets or cheeks to hold them in position on the top of a
roller or between the tops of two rollers.
Upon the shaft that carries the roller or rollers I place a worm to work a count
apparatus and throw-off.
I now take bobbins filled with single or double strands or fibres laid together in
any given number.
This double strand I wind off on to the metal bobbins (which are of equal
weight) which revolve by friction upon the roller or rollers.
And I measure say one thousand eight hundred yards by the number of
revolutions of the roller or rollers.
As the strands pass from the supply bobbin to the metal bobbin I provide a
tension and throw-off lever to stop the count and receiving bobbin when the supply
bobbin is empty or when the strands get fast on the supply bobbin and so tighten
and prevent the metal bobbin from revolving on the friction roller.
The yarn is distributed on the receiving bobbin in the ordinary manner.
D

page_text: When the given length has been wound upon the metal bobbins they are taken
to a weighing apparatus and classified according to the weight of yarn upon then
which will probably vary from 14 to 34 size or count according to the quality o
the raw material
The following will be sufficient to show the mode of classifying the various sizes
to prepare an even thread or number of threads for spinning into any size
required.
When the given length has been wound upon the metal bobbins they are taker
to a weighing apparatus and classified according to the weight of yarn upon then
which will probably vary from 14 to 34 size or count according to the quality o
the raw material
The following will be sufficient to show the mode of classifying the various sizes
to prepare an even thread or number of threads for spinning into any siz
required.
To prepare 20 size or number for spinning :
I can take 3 N° 30 and double them together
or, I can take 1 N° 28; 1 N° 30 and 1 N° 32.
or, 1 N° 28 and 2 N° 32
or, 1 N° 26 and 2 N° 34
or, 2 Nº 20
or,
1 N° 19 and 1 N° 20.
or, 1 N° 18 and 1 N° 22
or, 1 N° 18 and 1 N° 24.
or, 1 No17 and 1 N° 25.
or, 1 N° 16 and 1 N° 26
or, 1 N° 15 and 1 N° 28.
or, 1 N° 14 and 1 N° 34
This mode will work up the various numbers into one size for spinning.
To re-double the threads_from_the_shafts or bobbins after spinning I provide
spindles with large metal plates or other suitable material, one end fast and the
other to screw up the shaft on the spindle. These work in brackets in the
usual way.
--But-I-provide a friction plate of suitable-material-to act-upon the spindle plates
to regulate and equalize the tension of the strands.
The bobbins containing the doubled yarn are now taken to the throwing mill or
other twisting apparatus where the whole quantity upon each bobbin can be run
into one hank
Each set of bobbins filling a reel.
The reels when full are moistened and put upon the second part of my invention
which consists of a frame to support the reel containing the yarn and an apparatus
to regulate the twist by stretching and to measure the yarn into skeins upon
the receiving reel which is supported by the same frame and connected by. suitable
gearing.
or, 1 N° 14 and 1 N° 34
This mode will work up the various numbers into one size for spinning.
To re-double the threads_from_the_shafts_or_bobbins after spinning I provide
spindles with large metal plates or other suitable material, one end fast and the
other to screw up the shaft on the spindle. These work in brackets in the
usual way.
-But-I-provide a friction plate of suitable-material-to act-upon the spindle plates
to regulate and equalize the tension of the strands.
The bobbins containing the doubled yarn are now taken to the throwing mill or
other twisting apparatus where the whole quantity upon each bobbin can be run
into one hank:
Each set of bobbins filling a reel.
The reels when full are moistened and put upon the second part of my invention
which consists of a frame to support the reel containing the yarn and an apparatus
to regulate the twist by stretching and to measure the yarn into skeins upon
the receiving reel which is supported by the same frame and connected by. suitable
gearing.