Improvements in Burl Dyeing Machines.
Year: 1886

page_text: Improvements in Burl Dyeing Machines.
We, MARK OLDROYD of Dewsbury Yorkshire, Woollen Manufacturer, and JOHN
WILLIAM HEPWORTH of Churwell near Leeds, Yorkshire, Woollen Cloth Dyer
do hereby declare the nature of our invention for ." IMPROVEMENTS IN BURL
DYEING MACHINES," and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
Our invention has reference to that class of machine for dyeing woollen cloth for
which Letters Patent were granted to Mark Oldroyd one of the present applicants
and to others on the 12th day of March A.D, 1873 N° 898.
The machine is composed of a tank or cistern for containing dye liquor, and a
number of rollers are placed in the liquor near the bottom of the said tank and a
corresponding number of rollers at the top of the tank at a position above the
liquor all of which rollers are arranged in suitable bearings.
The cloth to be dyed passed over the several rollers, but in order to squeeze the
superfluous liquor out of the fabric as it passes over the upper set of rollers, each
roller is provided with a nipping roller.
The cloth to be dyed in this class of machine is made endless and is passed
through the machine as many times as is desirable to get the proper color, but as
the cloth after passing through the last pair of nipping rollers has to travel
under the tank so as to enter it again, it is very necessary that the cloth should be
fairly and equally dry otherwise the shade of dyeing is unequal.
To avoid this is the object of our present invention and this we accomplish by
removing the upper nipping rollers, and employ instead one pair of nipping rollers
placed at the delivery end of the machine.
These rollers are covered with india-rubber, felt cloth, or canvas, or other similar
yielding material which squeezes the dye liquor out of the cloth equally throughout
to such an extent that it is fairly dry and when it enters the tank again is readily
and equally dyed.
Such being the nature and object of our Invention, we will now proceed to
describe the same more fully, and for that purpose make reference to the accom-
panying sheet of drawings which is sectional elevation of an Oldroyd's' burl
dyeing machine having our improvements applied thereto-A is the tank or
cistern in which the dye liquor is placed, and B is rotary agitator employed for
keeping the liquor thoroughly mixed. C are the bottom row of rollers immersed

page_text: in the liquor, and D are the upper row of rollers at a position above the liquor.
The fabric E travels in the direction shewn by arrows, and enters the tank over
the first guide roller F, and on the cloth leaving the tank it passes between the
nipping rollers G, both of which are covered with india-rubber, cloth, or canvas, or
any suitable composition capable of squeezing the liquor out of the cloth. The
cloth is then cuttled or allowed to drop onto a dry scray I, which may be fixed or
moveable where it travels under the tank and enters the liquor again as many
times as is thought desirable.
The employment of the squeezing rollers G covered with the materials set forth;
will fairly dry the cloth whereby, it is more equally dyed than was the case with
the nipping rollers at present employed in Oldroyd's' bur dyeing machine.
'
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed we declare that what
we claim is;
In an "
Oldroyd's burl dyeing machine" the employment of squeezing or nipping
rollers at the delivery end of the machine covered with india-rubber, or other
suitable material for squeezing the liquor out of the cloth; where the cloth travels
upon a dry seray, and re-enters the liquor in manner substantially as set forth.
3000