IMPROVED MEANS OR MACHINERY FOR INDIGO BLUE DYEING
Year: 1870

page_text: LETTERS PATENT to John Oldroyd and Mark Oldroyd, junior, of the
Firm of Mark Oldroyd and Sons, of Dewsbury, in the County
of York, Woollen Manufacturers, and Joshua Woodcock, Dyer,
and James Coulter, Engineer, both of Dewsbury, aforesaid, for
the Invention of "IMPROVED MEANS OR MACHINERY FOR INDIGO BLUE
DYEING."
Sealed the 6th June 1871, and dated the 8th December 1870.
PROVISIONAL SPECIFICATION left by the said John Oldroyd, Mark
Oldroyd, Joshua Woodcock, and James Coulter at the Office of the
Commissioners of Patents, with their Petition, on the 8th December
1870.
We, JOHN OLDROYD and MARK OLDROYD, junior, of the Firm of
Mark Oldroyd and Sons, of Dewsbury, in the County of York, Woollen
Manufacturers, and JOSHUA WOODCOCK, Dyer, and JAMES COULTER,
Engineer, both of Dewsbury, aforesaid, do hereby declare the nature
of the said Invention for "IMPROVED MEANS OR MACHINERY FOR INDIGO BLUE
DYEENG" (to be as follows) :-

page_text: "
pair of nipping or squeezing rollers mounted in suitable frames, and
these frames hinged in pedestals fixed to the "carve or flange on each
side of the dye vat, cistern, or vessel, and in such manner as that the
rollers may be immersed in the dye liquor when in use. Motion
may be given to these rollers by either hand or power. A rail or roller
is also placed across the vat or cistern, so as to be immersed in the
liquor, and at a suitable distance from and parallel to the rollers.
The fabric to be dyed is passed between the rollers into the vat or vessel
(where it becomes cuttled or falls into folds) and the leading end being
brought back under and over the rail or roller is joined by stitching to
the other end, forming an endless fabric whereby the motion through
the liquor becomes continuous. A scray or grating is attached to the
frame on each side of the rollers to prevent the fabric rising to the
surface of the liquor, the one betwixt the rollers, and the rail also
serving to keep the fabric straight in its passage through the liquor.
Also to prevent the fabric adhering to and being carried around either
of the rollers we apply an additional roller at opposite sides of the
nipping rollers with bands, cords, or tapes, passing over one of each
nipping roller, and one of the additional rollers. The frames in which
the rollers are mounted being hinged enables them to be readily lifted
out of the liquor.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Oldroyd, Mark Oldroyd, Joshua Woodcock,
and James Coulter in the Great Seal Patent Office on the 8th June
1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
OLDROYD and MARK OLDROYD, junior, of the Firm of Mark Oldroyd
and Sons, of Dewsbury, in the County of York, Woollen Manufac-
turers, and JOSHUA WOODCOCK, Dyer, and JAMES COULTER, Engineer,
both of Dewsbury, aforesaid, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighth day of December, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said John Oldroyd, Mark Oldroyd, Joshua

page_text: Woodcock, and James Coulter, Her special. licence that we, the. said
John Oldroyd, Mark Oldroyd, Joshua Woodcock, and James Coulter,
our executors, administrators, and assigns, or such others as we, the said
John Oldroyd, Mark Oldroyd, Joshua Woodcock, and James Coulter,
our executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times, thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within, the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
'IMPROVED MEANS OR MACHINERY FOR INDIGO BLUE DYEING," upon the con-
dition (amongst others) that we, the said John Oldroyd, Mark Oldroyd,
Joshua Woodcock, and James Coulter, our executors or administrators,
by an instrument in writing under our, or their, or one of their hands
and seals, should particularly describe and ascertain the. nature of
the said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within
six calendar months next and immediately after the date of the said
Letters, Patent.
"
NOW KNOW YE, that we, the said John Oldroyd, Mark Oldroyd,
Joshua Woodcock, and James Coulter, do hereby declare the nature of our
said Invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement
and accompanying Sheet of Drawings (that is to say) :-
This Invention relates to the means or process of dyeing textile fabrics
with indigo, and the improved means or machinery consist of a pair
of nipping or squeezing rollers mounted in suitable frames, and these
frames hinged in pedestals fixed to the "carve" or flange on each side
of the dye vat, cistern, or vessel, and in such manner as that the rollers
may be immersed in the dye liquor when in use. Motion may be given.
to, these rollers by either hand or power. A rail or roller is also placed
across the vat or cistern so as to be immersed in the liquor, and at a
suitable distance from and parallel to the rollers. The fabric to be dyed
is passed betwixt the rollers. into the vat or vessel (where it becomes
cuttled or falls into folds) and the leading end being brought back
under and over the rail or roller is joined by stitching to the other end
forming an endless fabric whereby the motion through the liquor becomes
continuous. A scray or grating is attached to the frame on each side
of the rollers to prevent the fabric rising to the surface of the liquor,

page_text: Also to prevent the fabric adhering to and being carried around either of
the rollers we apply an additional roller at opposite sides of the nipping
rollers with bands, cords, or tapes passing over one of each nipping
roller, and one of the additional rollers. The frames in which the
rollers are mounted being hinged enables them to be readily lifted out 5
of the lianor
»
A and A¹, are the pair of nipping or squeezing rollers mounted in
suitable frames B attached to a shaft C, hinged in pedestals D fixed on
the "
carve or flange E of the vessel. These rollers are nipped or 1
pressed together by spiral or other springs, the pressure being adjusted
by the screws F. Scrays, gratings, or trellis frames G and H are
attached to the frames B, and rollers I and J are also mounted in
bearings in the said frame B. Endless bands are passed around the
roller A and roller I, and also others around the roller A¹ and roller J,
which are kept in position by the slits in the scray, one band being
provided to each slit. A rail K is fixed in the vessel, and an ordinary
false bottom or trammell Ļ is placed therein as usual. The Drawing
shews the position of the apparatus when in use, the dotted line M
shews the fabric, and the line N the surface of the liquor. Motion is
given to the rollers A by means of the train of wheel gearing P from
the driving pullies S, which may be driven by strap from any source of
power. Or a handle T may be used by the attendant to give motion to
them. When the apparatus is not in use it is lifted or turned over out
of the vessel by means of a lever Ụ applied to the shaft C. The method
or manner of using this apparatus will be readily understood by all
practical indigo blue dyers, that the fabric being passed between the
rollers A and under the scray G, thence over the rail Ķ when the ends
are joined together. Then by putting the machine or apparatus in
motion, either by hand or power, the fabric will be caused to travel in the
liquor in manner somewhat as shewn in the Drawings, for or during any
length of time desirable or requisite, to effect the proper dyeing of the

page_text: same. The scrays prevent the fabric rising above or out of the dye
liquor, and the bands prevent it from being carried around the
rollers A.
Having thus described the nature of the said Invention and shewn by
Drawings in what manner the same is or may be performed or carried
into practical operation, we would have it understood that we do not
confine or restrict ourselves to the precise details in the construction and
arrangement of the parts or method of applying the same, but what we
claim as of our Invention is, the application to and use in connection
with indigo blue dyeing vessels of machinery or apparatus comprising
a pair of rollers capable of being worked in the dye liquor for drawing
or carrying the fabrics forward, also of scrays or other similar means for
preventing the said fabrics, from rising above the surface of the liquor
with other necessary parts, the whole being so arranged that the fabrics
can be kept under the surface of and travelled or traversed through the
liquor any suitable length of time, and the said apparatus capable of
being readily removed out of the liquor when required in manner
substantially as herein described and shewn in the accompanying
Drawings.
In witness whereof, I, the said James Coulter, for and on behalf
of myself and the said John Oldroyd, Mark Oldroyd, and Joshua
Woodcock, have hereunto set my hand and seal, this Sixth day
of June, in the year of our Lord One thousand eight hundred and
seventy-one.
Signed, sealed, and delivered by
the within-named James Coulter
in the presence of
J. W. TASKER,
Clerk to W. Tasker,
Patent Agent,
JAMES COULTER. (L.S.)
Halifax & Bradford.