IMPROVE- MENTS IN THE MANUFACTURE OF DAMASKS AND OTHER SIMILAR MATERIALS
Year: 1876

page_text: LETTERS PATENT to Henry Barcroft, of the Glen, near Newry, in the County
of Armagh, in Ireland, Linen Manufacturer, for the Invention of "IMPROVE-
MENTS IN THE MANUFACTURE OF DAMASKS AND OTHER SIMILAR MATERIALS."
Sealed the 5th January 1877, and dated the 12th October 1876.
PROVISIONAL SPECIFICATION left by the said Henry Barcroft at the Office
of the Commissioners of Patents on the 12th October 1876.
HENRY BARCROFT, of the Glen, near Newry, in the County of Armagh, in
Ireland, Linen Manufacturer. "IMPROVEMENTS IN THE MANUFACTURE OF DAMASKS
AND OTHER SIMILAR MATERIALS."
The Invention has for its object the production of the pattern upon cloths of
different widths according to one and the same design, and from the same set or
sets of cards, and is a development of my Patent of 1869, No. 253, and applicable
to jacquard apparatus employed for producing twilled fabrics without the aid of
cards.
In carrying my said Patent into operation, and in order to produce the effect
previously accomplished by means of cards, I employ needles having two or more
eyes; and a modification or adjustment of such needles enables me to effect my
present improvements.
Accordingly when the design has been prepared for a wider cloth than that to
which I desire to apply the same, I remove or omit a row or rows, or part or parts
of a row or rows of hooks, and substitute for some of the needles employed in the
production of the pattern on the wider cloth a needle or needles having the number
of eyes reduced according to the number of hooks necessary to be removed or
omitted, in order to confine the pattern within the more limited space upon which
it requires to be displayed.
When desire to apply the design to a wider cloth than that for which it has
been prepared, I increase the number of hooks and employ needles with an increased
number of eyes. By these means I produce from one design the same pattern upon
cloths of various widths as well as upon a large and small napkin, and doily or
other figured fabric.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Barcroft in the Great Seal Patent Office on the 9th April
1877.
HENRY BARCROFT, of the Glen, near Newry, in the County of Armagh, in Ireland,
Linen Manufacturer. "IMPROVEMENTS IN THE MANUFACTURE OF DAMASKS AND
OTHER SIMILAR MATERIALS."
My present Invention has for its object the production of the pattern upon cloths
of different widths (and likewise upon cloths of various qualities or numbers of
fineness) according to one and the same design, and from the same set or sets of
cards, and is a development of my Patent of One thousand eight hundred and sixty-
nine, numbered Two hundred and fifty-three, and applicable to jacquard apparatus
employed for producing twilled fabrics without the aid of cards, and consists in
filling the machine or loom in a different way, according to the width or fineness
of the fabric to be woven.
In carrying my present Invention into operation, and in order to produce the
effect previously accomplished by means of separate sets of cards, I employ needles
having two or more eyes, and a modification or adjustment of such needles enables
me to effect the object of my present Patent.
Accordingly when the design has been prepared for a wider cloth than that to
which I desire to apply the same, I remove or omit a row or rows, or part or parts
of a row or rows of hooks, and substitute for some of the needles employed in the
production of the pattern on the wider cloth a needle or needles having the
number of eyes reduced so as to correspond with the number of hooks necessary to
be removed or omitted, in order to confine the pattern within the more limited
space upon which it is required to be displayed.
When I desire on the other hand to apply the design to a wider cloth than that
for which it had been prepared, I increase the number of hooks and employ needles
with a correspondingly increased number of eyes.
In order to illustrate the mode of filling the machine or loom for the purpose of
my present Patent, I will describe the arrangement which I would make if I
desired to weave the same pattern on a cloth with half the number of the threads
of warp contained in the cloth for which the design had been originally prepared,
and which was intended to be worked with an eight leaf twill, and with a needle
having two eyes. In that case I would have the machine or loom refilled with
needles provided with single eyes, in order to suit the eight rows of hooks used to
produce one complete twill.
Again, if I desired to make a twenty-four row machine or loom with needles
provided with three eyes each to operate on half the quantity of warp, I would
refill the machine or loom with needles recurring in alternate rows of, say, eight
each with one eye, and eight each with two eyes. By these and similar means I
produce from one design the same pattern upon cloths of different widths and
various qualities or numbers of fineness, as well as upon large and small or coarse
and fine napkins and doilies or other figured fabrics.
Having now described the nature of the said Invention and in what manner the
same is to be performed, I would have it to be understood that I do not claim the
Invention of the figuring of damasks and other similar materials, nor do I claim
the use of the jacquard machine except when the same is filled and arranged in the
manner and for the purposes I have described, nor of any of the parts thereof, nor
of needles having more than one eye, nor of any of the separate mechanical
contrivances which form the twilling and figuring apparatus used by me, but I
claim,―
First. The production of the pattern on damasks and other similar materials of
different widths and various fineness from the same design by a modification or
adjustment of the needles and hooks of a jacquard machine, substantially in the
manner herein-before described.

page_text: Secondly. The production of the pattern on damasks and other similar materials
of different widths and various fineness from the same design without changing
the cards, substantially in the manner herein-before described.
And, Thirdly. The combination and arrangement of needles and hooks in a
jacquard machine as herein described, for the purpose of producing the pattern on
damasks and other similar materials of different widths and various fineness from
the same design in the manner herein-before mentioned and set forth.
In witness whereof, I, the said Henry Barcroft, have hereunto set my hand
and seal, this Sixth day of April, in the year of our Lord. One thousand
eight hundred and seventy-seven.
HENRY BARCROFT. (LS.)