Improvements in Dye-extracting Apparatus.
Year: 1889

page_text: Date of Application, 3rd Oct., 1889-Accepted, 9th Nov., 1889
COMPLETE SPECIFICATION.
Improvements in Dye-extracting Apparatus.
I, FREDERICK RHODES of Westfield, Gomersal in the County of York, Foreman
Dyer, 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 :-
My invention relates to an improved form of apparatus for extracting the soluble
colouring matter from dye-woods or other materials employed in dyeing, and in the
general arrangement of such extracting apparatus, combined with the cisterns or vats
and with the liquor raising and heating devices.
To carry out my invention I employ in combination with an ordinary dye vat and
water heating and raising appliances, an extracting vessel of either rectangular or
cylindrical form, one end of which is closed permanently and the other end is provided
with a movable steam tight cover secured by bolts and nuts. The extracting vessel is
most conveniently used in a horizontal position and is furnished with a perforated
false bottom or strainer upon which is placed the dye wood or other material from
which the soluble colouring matter is to be extracted. An inlet is formed at the top
side of the extracting vessol for the admission of hot water or dye liquor and an outlet
at the bottom of the vessel.
The temperature of the water or liquor contained in or passing through the
extracting vessel is maintained or raised by means of a steam coil or by blowing
in steam or by steam jacketting.
In order to enable my invention to be fully understood I will proceed to describe
the same with reference to the accompanying drawings in which,
Figures 1 and 2 represent sectional elevations of my improved extracting apparatus
applied to ordinary open dye vats or cisterns.
Figure 3 represents a sectional elevation of my improved extracting apparatus
applied to the upper and lower vats as employed in Lee, Bradshaw, and Lee's
dyeing process, and described in their Specification No. 2093 dated the 11th day of
February 1888.
Similar letters refer to similar parts in all the drawings.
In Figures 1 and 2 an ordinary open dye vat or cistern is represented at A A and
the extracting vessel at B in which is fixed the perforated shelf or false bottom F
upon which the dye wood G is placed. This shelf is covered with filtering cloth or
other suitable medium for the purpose of preventing the dust and small particles of
wood from being carried forward with the liquor.
The door or cover H of the extracting vessel is carried on a strong hinge
and when closed is secured to a flange formed at the end of the vessel by bolts
and nuts, the joint being made between the cover and the flange by means of
elastic packing.
In the operation of this apparatus the dye liquor from the vat A A is drawn out by
means of the pump or injector E and forced up the pipe C to the top side of the
extracting vessel B, or in Figure 2 the liquor is forced into a cistern K fixed above
and supplying the extracting vessel. In this cistern a coil of steam pipes L is fixed
for further heating the dye liquor before it passes into the extractor.
The liquor, after passing through the extracting vessel, where it becomes
strengthened by dissolving a further quantity of dye matter out of the dye wood G
or other material placed upon the tray F, is then conducted by the pipe D back
into the vat A A.
The temperature of the liquor in the vat A A is regulated by means of the steam
Dine J

page_text: In Figure 3 the strength of liquor is maintained or increased in the lower vat A
by connecting the upper vat A¹ A¹ with the inlet at the top of the extractor B by the
pipe C and allowing the liquor after passing through the extractor to return by the
pipe D into the vat A A.
The pump for raising the liquor is represented at E and an overflow pipe at M.
The cans containing "wool tops" to be dyed are represented at N.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is,.
1. In apparatus for extracting the soluble colouring matter from dye wares the
extracting vessel with steam tight door and perforated shelf as described and
represented.
2. In dye extracting apparatus the combination of the extracting vessel described
with the open vat, and the liquor raising apparatus, all substantially as described and
represented in the accompanying drawings.
3. In dye extracting apparatus the extracting vessel as described, or further heated
by means of steam pipes or a steam jacket.
4. In dye extracting apparatus the extracting vessel as described combined with an
auxiliary cistern placed above the extracting vessel and in which cistern the liquor is
further heated by means of a steam coil or by blowing in a jet of steam.
Dated this Fifth day of September 1889
WILLIAM JAMES BAKER,
2, New Street, Huddersfield, Agent for the Applicant.