IMPROVEMENTS IN THE METHOD OF, AND APPARATUS FOR DYEING
Year: 1884

page_text: I. WILLIAM DANIEL THORNTON, of, Marshfield, Dye Works, Bradford, in the
county of York, Dyer, do hereby declare the nature of my Invention for
"IMPROVEMENTS IN THE METHOD OF, AND APPARATUS FOR DYEING" to be as
follows:
:
The object of this Invention is to dye wool, wool in the sliver, and in yarn,
also cotton and other fibres, in its various stages of manufacture in less time than
hitherto.
I accomplish my object, by placing the wool cotton, or other fibre, into a
receptacle or vessel of convenient form for the purpose, having a cover which
when placed over the mouth, makes an air tight joint, this vessel is, in my
improvement, exhausted by an ejector, which is not only much quicker in its
action than an air pump, but mechanical power is also dispensed with. I also
form a vacuum in a separate vessel by means of the same ejector, and by means of
a connection with the first named receptacle or vessel, I can in the same instant as
the dye water is admitted, open this connection, and instantly draw off the vapor,
naturally a fore-runner of the dye liquor, and this as it were insures the vacuum
at the precise instant the dyeing is effected. When the vacuum is formed in the
vessel the dye water is admitted by means of a valve, and after a few minutes
saturation, I am enabled by means of a second ejector to draw out of the vessel,
the dye liquid, and force it into the dye vat or cistern in much less time than
hitherto by gravity only.

page_text: I, WILLIAM DANIEL THORNTON, of Marshfield Dye Works, Bradford, in the
County of York, Dyer, do hereby declare the nature of my invention for
IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR DYEING, and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
The object of this invention is to dye wool, wool in the sliver, and when spun
into yarn; also cotton and other fibres in various stages of manufacture in less
time than hitherto; and consists of placing the wool; cotton, or other fibre into &
receptacle" or vessel of convenient form, having a cover which when placed upon
the vessel makes an air tight joint: a vacuum is then created in the vessel by
means of an ejector; and on opening a valve, the dye liquor is admitted to the
fibre, which by reason of the vacuum penetrates and dyes the same in a few
minutes. The dye liquor is then drawn off by means of a second ejector connected
to the bottom of the vessel, in much less time than is required for it to run off by
gravity alone.
Such being the object and nature of my said invention, I will furthur describe
the same by making reference to the accompanying drawing, which represents a
sectional elevation through a circular vessel, which may be used to accomplish my
.object.
The lid or cover A is fitted with an air tap B, and is raised from the vessel C by
a crane or by other well known means; the fibre to be dyed is placed within the
'vessel upon the perforated grid plates D, when the cover is again placed on the
,vessel; the india rubber or other ring Ę of flexible material making an air tight
joint. A vacuum is then created in the vessel by means of an ordinary ejector
suitable for the purpose, which is connected to the pipe F by a flexible tube.
Should the fibre require immersion with any preparation liquor previous to
dyeing, it is now admitted through a valve opening into the interior, and after
standing a suitable time is ejected therefrom by another ejector fixed to the brauch
pipe G. A vacuum is again formed in the vessel C, and on the dye liquor being
admitted through another valve opening; it thoroughly penetrates the fibre whilst
standing therein for a few minutes, thereby dyeing the same in much less time
than by the ordinary method; the vapor arising from the dye liquor is removed
from the vessel C, by the ejector in connection with the aforesaid pipe F, thus
maintaining a vacuum whilst the dyeing is effected.
On opening the air tap B, and putting the ejector connected with the branch
pipe G into action, the vessel O is emptied of the dye water in less time than is
required for it to run off by gravity alone.

page_text: 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
An air tight vessel for dyeing fibre, arranged. substantially in the manner as
herein before described and as illustrated by the accompanying drawing.
WAUGH & CHAPMAN,
70, Chancery Lane,
Agents for the Applicant.