Improvements relating to the Dyeing of Yarns and Threads on Preparing, Spinning, Doubling, Twisting, Winding, and like Machines.
Year: 1898

page_text: Date of Application, 8th Jan., 1898-Accepted, 31st Dec., 1898
COMPLETE SPECIFICATION.
Improvements relating to the Dyeing of Yarns and Threads on
Preparing, Spinning, Doubling, Twisting, Winding, and like
Machines.
We, STANISLAW MARCUS SILBERSTEIN, Manufacturer, of 16, Promenadenstrasse,
ALBERT BOIIME, Head Master Spinner, of 24, Pustastrasse, and JESALAS MARGULIES,
Engineer, Pustastrasse, all of Lodz, in the Russian Empire, do hereby declare the
nature of this invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement:-
The invention relates to a method of and means for the wet spinning of yarn
and dyeing the same direct on spinning machines, before the yarn passes to the
stretching rollers. Stretching rollers as constructed hitherto do not allow direct
dyeing in case of wet spinning on spinning machines, because the covering consist-
ing of textile fabric and leather becomes undone by the moisture and is thus
rendered completely useless.
Besides a change effected in the thread which presses into the wet leather
covering the thread would take up part of the colour temporarily resident in the
leather which would necessitate a change of stretching rollers every time the
kind of yarn treated is changed. Further, for many dyes, leather cylinders are
unsuitable, because in dyeing the coloring matter would be transferred direct from
the yarn to the leather, thus causing considerable loss of colouring matter, and it
would be impossible to obtain the same shade of colour when the operation is
repeated.
These disadvantages and others which occur in wet spinning on leather cylinders,
and the consequent waste of labour and material, have rendered hitherto the
dyeing of yarn, before it passes to the stretching cylinders impracticable. It
has also been found impracticable to spin in colours on metallic stretching
cylinders, because many of the dyes act destructively on these expensive metal
cylinders, and because the yarn often passes the cylinders without being spun,
and thus becomes useless, unless the pressure applied to the cylinders is great
and on the other hand if the pressure is great the thread is liable to break
repeatedly, is spun too thin and is dyed irregularly.
This invention overcomes the before mentioned difficulties by the application
of a combination of layers of india rubber, or similar material as covering for the
stretching cylinders, whereby the wet spinning and dyeing is rendered possible,
such covering of india rubber not being injured by moisture or colours.
In order that this invention may be the better understood we now proceed to
describe the same, reference being had to the accompanying drawings and to the
letters and figures marked thereon.
Figure 1 shows the yarn being fed through dyeing tubs only.
In Figure 2 the yarn passes through a lye-tub before it passes to the dyeing tub.
If desired the yarn treated in the lye may be dried for which purpose hot rollers
are provided.
The varn is unwound from the bobbins f by rollers 7 the speed of which is

page_text: exactly the same as that of the cylinder for drawing the yarn into the tub. The
yarn which has been unwound, passes, according to kind of dye used, either direct
into the dye tub b, or it passes first through a tub m filled with lye or hot water,
Figure 2. After passing through the dye tub the yarn passes through the rinsing
tub c which is filled with hot water. Pressing rollers a are situated between the
dye tub and the rinsing tub in order to press out the excess of dye which is
returned to the dye tub.
A second pair of pressing rollers are arranged close to the exit place of the
yarn from the rinsing tub in order to press the yarn as dry as possible. The
yarn is then led over hot rollers h, heated by steam, which dry it partially. The
yarn then passes over the stretching cylinders d covered with india rubber or
similar material and hence to the bobbins K.
The yarn is maintained in the desired position in the tubs by guiding rollers.
The tubs are conveniently heated by steam.
In case of heavy numbers of yarn, the saturated yarn is dried by pressing rollers
before it passes the stretching cylinders.
The above described method is particularly applicable for continuous spinning
machines.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed I declare that what
I claim is―
1. A method for the wet spinning and dyeing of yarn on preliminary and
spinning machines winding machines, and other machines in which the yarn before
passing to the stretching cylinders covered with india rubber, passes through dye
tubs, or lye and dye tubs, the excess of moisture being removed by rinsing and
pressing in order to permit of the dyeing of the yarn before it passes to the
stretching cylinders substantially as described.
2. The application of the method claimed in Claim 1 for doubling and twisting
machines.
3. Apparatus for carrying out the method claimed in Claim 1, consisting in the
arrangement of a number of tubs, troughs, or similar receptacles near the machine
filled with lye, colour and water respectively through which the yarn is passed
before it passes the stretching rollers, and of intermediate pressing and drying
devices substantially as described.
4th. The construction and arrangement of apparatus for carrying out the method
claimed in Claim 1 substantially as described and illustrated by the accompanying
drawings.
Dated this 8th day of January 1900
FELL & JAMES,
1, Queen Victoria Street, London, E.C.