Improvements in the Production of Designs upon Tapestry Carpets.
Year: 1895

page_text: Date of Application, 28th Dec., 1895
Complete Specification Left, 26th Sept., 1896-Accepted; 31st Oct., 1896
PROVISIONAL SPECIFICATION. ·
Improvements in the Production of Designs upon Tapestry
Carpets.
I ROBERT JOHN CHADWICK MITCHELL of Albert Works, Waterfoot, near
Manchester, in the County of Lancaster, Manufacturer, do hereby declare the
nature of this invention to be as follows:-
This invention relates to the production of printed tapestry carpets with an
uncut looped pile, the object being to obtain richer colors and more artistic effects
and especially upon such tapestry carpets as are printed with designs having light
grounds.
This invention is equally applicable to two different methods of producing
tapestry carpets, one method being to. print the worsted yarn prior to the process
of weaving, and therefore to weave the pattern in the loom, and the other method
being to weave the worsted yarn in its natural and uncolored state and therefore
to produce from the loom a piece in the "grey" with a looped pile, which
is subsequently printed by hand blocks, cylinders or other surface-printing
processes.
In producing tapestry carpets by the first process, that is by printing the yarn
before it is woven, it has been found extremely difficult to produce a light ground
which did not vary considerably in shade and tone of color and which was free
from what is technically known as "stripey" effects.
There is also a great difficulty in printing the darker colors up to the light
shades, and the process of "scraping," which is necessary to the ordinary mode of
printing so as to ensure a complete penetration of the colors to the fibres of the
yarn, not only tends to blur the colors but to deteriorate to a considerable extent
the looped or uncut yarn or pile.
I propose to dispense with this "scraping" process, and to overcome in a great
measure the difficulty of printing the dark shades, in the following manner.
In producing tapestry carpets by the first process, instead of printing all the
colors (both light and dark) upon the pile yarn as has been hitherto practised,
I dye the said yarn to the predominating light shade or ground color, and I print
the other colors onto the dyed yarn upon the drum in the ordinary manner, and the
looped pile fabric is woven in the loom in the usual way.
In this manner I not only produce a perfectly even light ground in a printed
tapestry carpet, but as the predominating light shade is dyed and not printed the
objectionable results in printing the dark colors are entirely overcome.
In producing tapestry carpets by the second method where the piece is printed
subsequently to the process of weaving, I first dye the worsted yarn to the
predominating light shade, or ground color, and afterwards weave the piece in the
usual manner, so that when it leaves the loom it has the appearance of a fabric
dyed to one uniform color corresponding to the ground color of the carpet.
I then print by hand blocks or otherwise upon this dyed ground the various other
colors of the pattern and by this means I secure an absolutely uniform shade of
color for the ground, which was impossible when the looped yarn or pile was in the
grey" and where the light ground color of the pattern had to be printed by hand
blocks or otherwise.
66
My improvements are therefore applicable to both these methods of producing
tapestry carpets because the dyed looped yarn or pile takes the colors so much

page_text: more freely than the undyed yarn, the dark and light colors are not liable to blur
or run together at the edges, the "scraping" process can be entirely dispensed
with, and in both instances my improved method produces much more durable
colors, and much richer and more brilliant effects, whilst it secures what has been
so difficult to obtain hitherto, vizt.: an even and unvarying ground color for
printed tapestry carpets.
Dated this 27th day of December 1895.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
Improvements in the Production of Designs upon Tapestry
Carpets.
I ROBERT JOHN CHADWICK MITCHELL, of Albert Works, Waterfoot, near
Manchester, in the County of Lancaster Manufacturer, 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:-
This invention relates to the production of printed tapestry carpets with an
uncut looped pile, the object being to obtain richer colors and more artistic effects
and especially upon such tapestry carpets as are printed with designs having light
grounds.
This invention is equally applicable to two different methods of producing
tapestry carpets, one method being to print the worsted yarn prior to the process
of weaving, and therefore to weave the pattern in the loom, and the other
method being to weave the worsted yarn in its natural and uncolored state and
therefore to produce from the loom a piece in the ".
"grey with a looped pile,
which is subsequently printed by hand blocks, cylinders or other surface-printing
processes.
"
In producing tapestry carpets by the first process, that is by printing the yarn
before it is woven, it has been found extremely difficult to produce a light ground
which did not vary considerably in shade and tone of color and which was free
from what is technically known as "stripey" effects.
There is also a great difficulty in printing the darker colors up to the light
shades, and the process of "scraping," which is necessary to the ordinary,mode of
printing so as to ensure a complete penetration of the colors to the fibres of the
yarn, not only tends to blur the colors but to deteriorate to a considerable extent
the looped or uncut yarn or pile.
I propose to dispense with this "scraping" process and to overcome in a great
measure the difficulty of printing the dark shades in the following manner :
In producing tapestry carpets by the first process, instead of printing all the
colors (both light and dark) upon the pile yarn as has been hitherto practised,
1 dye the said yarn to the predominating light shade or ground color, and I print
the other colors onto the dyed yarn upon the drum in the ordinary manner, and the
looped pile fabric is woven in the loom in the usual way.
In this manner I not only produce a perfectly even light ground in a printed
tapestry carpet, but as the predominating light shade is dyed and not printed the
objectionable results in printing the dark colors are entirely overcome.
In producing tapestry carpets by the second method where the piece is printed
subsequently to the process of weaving, I first dye the worsted yarn to the
predominating light shade, or ground color, and afterwards weave the piece in the
usual manner, so that when it leaves the loom it has the appearance of a fabric
dyed to one uniform color corresponding to the ground color of the carpet,
I then print by hand blocks or otherwise upon this dyed ground the various

page_text: other colors of the pattern, and by this means 1 secure an absolutely uniform shade
of color for the ground, which was impossible when the looped yarn or pile was in
the "grey" and where the light ground color of the pattern had to be printed by
hand blocks or otherwise.
My improvements are therefore applicable to both these methods of producing
tapestry carpets because the dyed looped yarn or pile takes the colors so much more
freely than the undyed yarn, the dark and light colors are not liable to blur or run
together at the edges, the "scraping" process can be entirely dispensed with, and
in both instances my improved method produces much more durable colors, and
much richer and more brilliant effects, whilst it secures what has been so difficult
to obtain hitherto vizt.: an even and unvarying ground color for printed tapestry
carpets.
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. The improvement in the production of designs upon tapestry carpets consisting
in first dyeing the yarn to the predominating light shade or ground color, then.
printing the other colors (both light and dark) onto the dyed yarn upon the drum.
in the ordinary manner, and lastly weaving the looped pile fabric therewith in the
loom in the usual way, substantially as herein before described.
2. The improvement in the production of designs upon tapestry carpets consisting
in first dyeing the worsted yarn to the predominating light shade or ground color,
then weaving the looped pile fabric in the usual manner, and afterwards printing
by hand blocks or otherwise upon this dyed ground the various other colors of the:
pattern, substantially as hereinbefore described.
Dated this 25th day of September 1896.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.