Year: 1887

page_text: Date of Application, 11th Jan., 1887.
Complete Left, 13th Apr., 1887.
Complete Accepted, 13th May, 1887.
In the dyeing of loose cotton and other unspun textile fibres it is in many cases
very difficult to distribute the necessary dye stuff or colouring matter equally upon the
material especially in the case of aniline colors, thus an unequal dyeing results, dark
coloured spots appear between the bright or white parts even with the most effective
stirring.
In order to attain even dyeing according to the usual method the necessary dye
stuff or colouring matter is not placed all at once in the dye bath, but it is put in a
portion at a time and the goods are taken out of the bath before each addition of
colour. Notwithstanding this, however, in the case of some colours, for instance,
methyl blue, the necessary equality cannot be obtained.
In order to completely overcome these disadvantages, I proceed in the following
manner:-
I place the goods to be dyed, and which have been previously mordaunted, in a
vessel containing the necessary quantity of water and I stir or guide the materials
therein either by the aid of mechanical arrangements or by hand.
During this stirring I allow the solution of colouring matter or dye (more or less
concentrated) to flow slowly into the bath.
This may be effected either by the aid of a pump, a jet or spray apparatus, or an
injector and either by power or manual labour. Or a vessel filled with a certain
quantity of dilute solution of dye matter may be so arranged that a continual flow of
the same into the dye vat will be possible.
By means of this continual addition of dye matter, and with an effective stirring or
movement of the goods, it is possible to produce an even dyeing as the continuons
stirring brings the materials constantly into a different position and the colouring
matter which flows to the bath gradually, does not have to be taken up at once by the
DQ.77

page_text: goods but is always in the dye bath in a diluted condition, which is rendered possible,
as above mentioned, by the continuous flow of the colouring matter or dye.
In carrying out this process I make use of a machine consisting of an oval vessel in
the centre of which is arranged a well, in shape concentric with the outer walls of the
vessel. Above the vessel rotate two shafts upon cach of which are secured several
bent arms or stirrers which cause the goods to circulate continuously around the
elevated portion.
At a slight distance above the floor of the vessel is a perforated false bottom.
Underneath this false bottom there is situated a suction pipo through which the dye
will be sucked or drawn out of the vessel by means of a pump in order to be again
ejected through a fine opening or nozzle over or upon the material to be dyed.
The solution of colouring matter is led through a pipe from a suitable vessel, a cock
being provided for regulating its admission into the suction tube. The solution
becomes mixed in the pump with the water sucked or drawn out from the dye vessel
and in this way is spurted or injected in the state of a diluto solution onto the goods
to be dyed.
The dye supply pipe may, if desired, be introduced into the pressure tube of the
pump.
Dated this 11th day of January 1887

page_text: 1 GUSTAV JAGENBURG of Rydboholm, Sweden, 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:
--
In the dyeing of loose cotton and other unspun textile fibres, it is in many cases
very difficult to distribute the necessary dye stuff or colouring matter equally upon
the material, especially in the case of aniline colors; thus, an unequal dyeing results,
and dark coloured spots appear between the bright or white parts, even with the
most effective stirring.
To attain even dyeing according to the usual method, the necessary dye stuff or
colouring matter is not placed all at once in the dye bath, but it is put in a portion at
a time, and the goods are taken out of tho bath before each addition of colour.—
Notwithstanding this, however, in the case of some colours, for instance, methyl blue,
the necessary equality cannot be obtained.
In order to completely overcome these disadvantages, I proceed in the following
manner:-
I place the goods to, be dyed, and which have been previously mordaunted, in a
vessel containing the necessary quantity of water, and I stir or guide the materials
therein either by the aid of mechanical arrangements or by hand.
During this stirring, I allow the concentrated solution of colouring matter or dyo
to flow slowly, in an attenuated condition, into the bath.
This may be effected either by the aid of a pump, a jet or spray apparatus, or an
injector and either by power or manual labour.-Or a vessel filled with a certain
quantity of dilute solution of dye matter may be so arranged that a continual flow of
the same into the dye vat will be possible.
By means of this continual addition of dye matter, and with an effective stirring or
movement of the goods, it is possible to produce an even dyeing, as the continuous
stirring brings the materials constantly into a different position, and the colouring
matter, which flows to the bath gradually, does not have to be taken up at once by
the goods, but is always in the dye bath in a diluted condition, which is rendered
possible, as above mentioned, by the continuous flow of the colouring matter or dye.
In the accompanying drawing, Fig. 1 is a side view of an ordinary cotton washing
machine, Fig. 2 is a plan view, and Fig. 3 a cross section. Near the washing
machine, I place a centrifugal pump H, or it may be an injector or other suitable
forcing apparatus, which sucks out the liquor contained in the body A of the vessel,
from below, and in fact from underneath a perforated bottom F, and throws it in
again above. The liquid in the body A of the vessel will therefore be kept constantly
circulating through the centrifugal pump or the injector. Near the pump or the
injector place a vessel K, which will be filled with concentrated dye solution, and

page_text: will be in connection with the suction tube G of the pump H by means of the tube L.
The concentrated dye solution will now, by means of the tube L, flow constantly into
the suction tube of the pump H; will become mixed intimately in the pump itself
with the fluid sucked out of the vessel A; and will be spurted out evenly, in an
attenuated condition, through the delivery pipe J, onto the upper surface of the liquid
in the vessel A, whilst the stirrers E, mounted on the shafts D D, maintain the
material to be dyed in constant motion around the central elevated portion B B.
With "quickly-attacking" dyes, half an hour is requisite to effect a complete and
thorough dyeing; with more slowly-attacking ones, a quarter of an hour only.
By the continuous admission of the concentrated dyo into the suction tube of the
pump F, a continual mixture of the dye liquor with concentrated dye, outside the dye
vessel, will be attained, and also an admission of the dye into the dye vessel in such
an attenuated condition that an absolutely even dyeing will be the result.
In this manner, dyed cotton remains soft, and as fit for spinning, as ordinary raw
cotton, whereby it will be possible to spinners to spin yarn up to the finest numbers,
according to the quality of the cotton employed.
Instead of admitting the concentrated dye solution to the suction tube, it could also
be admitted to the delivery tube of the pump; in this case, however, it would bo
necessary to adapt to the interior of the delivery tube, a number of sieves, or
perforated plates, as shown at M, Fig. 4, by which means a mixture of the dye liquor
with the dye solution will be effected.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, I declare that what I claim is :-
In the dyeing of cotton in an ordinary cotton washing machine, in which the dye
liquid, by means of a centrifugal pump or an injector, is sucked out from the lower
part of the dye vessel and thrown in again at top, the continuous admission of the
concentrated dye solution (contained in a vessel outside the dye vessel) into the
suction tube, or into the delivery tube of the pump or injector, whereby the dye is
continuously admitted to the dyeing liquid in such an attenuated condition that an
even dyeing, and one which is not pred udicial to the cotton, is produced.
Total this 10th
SA11007