IMPROVEMENTS IN JACQUARD APPARATUS
Year: 1853

page_text: LETTERS PATENT to Benjamin Burrows, of Leicester, Designer,
for the Invention of "IMPROVEMENTS IN JACQUARD APPARATUS."
Sealed the 8th September 1853, and dated the 16th July 1853.
PROVISIONAL SPECIFICATION left by the said Benjamin Burrows
at the Office of the Commissioners of Patents, with his Petition,
on the 16th July 1853.
I, BENJAMIN BURROWS, of Leicester, Designer, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN JACQUARD APPA-
RATUS" to be as follows:-
This Invention has for its object a peculiar combination of jacquard
apparatus in order to arrange the same in a manner suitable for open
ing two sheds simultaneously, or separately, for the passage of two
shuttles, one on each side of a central warp. For this purpose the
usual lifting wires are employed, and those which are selected by the
cards are moved up by the grift or frame to make the upper shed in a
similar manner to that ordinarily practised; but the perforated board
on which the lower ends of the lifting wires rest is caused to descend
together with the unselected wires, by which a lower shed is opened
simultaneously with the upper one, thus admitting of two shuttles
being thrown across, the one under, and the other over, a middle

page_text: warp, or by cross mounting, and giving separate movement to these
parts, varied effects may be produced, and two sheds opened, according
to the effect desired to be obtained.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Benjamin Burrows in the Great Seal Patent
Office, on the 16th January 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, 1,
BENJAMIN BURROWS, of Leicester, Designer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixteenth day of July, in the year
of our Lord One thousand eight hundred and fifty-three, in the seven-
teenth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Benjamin Burrows, Her special licence
that I, the said Benjamin Burrows, my executors, administrators,
and assigns, or such others as I, the said Benjamin Burrows, my
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
IMPROVEMENTS IN JACQUARD APPARATUS," upon the condition (amongst
others) that I, the said Benjamin Burrows, by an instrument in writing
under my hand and seal, should particularly describe and ascertain the
nature of the said Invention, and in what manner the sanie 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 I, the said Benjamin Burrows, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in
and by the following statement thereof (that is to say):
This Invention has for its object a peculiar combination of jacquard
apparatus in order to arrange the same in a manner suitable for opening
two slieds simultaneously, or separately, for the passage of two shuttles,

page_text: one on each side of a central warp. For this purpose the usual lifting
wires are employed, and those which are selected by the cards are
moved up by the griff or frame to make the upper shed in a similar
manner to that ordinarily practised; but the perforated board on which
the lower ends of the lifting wires rest is caused to descend, together
with the unselected wires, by which a lower shed is opened simulta-
neously with the upper one, thus admitting of two shuttles being thrown
across, the one under, and the other over, a middle warp, or by cross
mounting, and giving separate movement to these parts varied effect
may be produced, and two sheds opened, according to the effect desired
to be obtained.
And in order that my Invention may be more fully understood and
readily carried into effect I will proceed to describe the means pursued
by me.
DESCRIPTION OF THE DRAWING.
The Drawing shows a vertical section of a jacquard machine or
apparatus, suitably arranged for carrying out my present improvements;
and, as the nature and working of the apparatus is in many respects
similar to the jacquard apparatus in general use, and well understood,
it will only be necessary to give a particular description of those parts
which constitute my present improvements, so as to enable persons
acquainted with this class of machinery to understand and carry out
my Invention.
a, a, is the framing of the machine; b, is an axis
supported in bearings at each end of the machine; c, is a lever, fixed
on one end of the axis b, by which a rocking motion is communicated
to the axis b, in any convenient manner; d, d', are cross pieces or
rocking levers, fixed on each end of the shaft or axis b, by which a
rising and falling movement is given to the griff frame e, and to the
perforated board or frame f, which supports the lifting wires J. The
lever arms d, are connected at each end of the machine to the griff
frame e, by links or connecting rods e', the lever arms d', being con-
nected by links or connecting rods f¹, to the guides f², which support
the perforated board or frame f. e, are guide rods affixed to the griff
frame at each end of the machine; g', ', are loops formed in the
lifting wires y, which rest upon the perforated board or frame f, and

page_text: by which the unselected wires are supported in their descent to form a
shed below a central warp at the same time that the selected wires
raise their warp threads to form a shed above a central warp; which
warp may be either a stationary warp or under the control of jacquard
apparatus, so as to work with the upper or under shed, as the nature of
the fabric may require. h, is the jacquard cylinder, and i, i, are the
needles, which are of the ordinary construction; and the action of these
parts being the same as those in common use, and well understood,
it will not be necessary to give a more particular description thereof.
In the above description the opening of the two sheds is simulta-
neous, which is what I prefer; but a mechanic will readily see that
the apparatus may be varied so as to open the two sheds separately,
and so that the opening of one might precede the opening of the other.
When employing two jacquard apparatus and cross mountings, as have
heretofore been practised, two sheds may be opened, as above explained,
by either or both of such apparatus, according to the effect desired to be
obtained; or jacquard apparatus according to my Invention may be so
arranged that some of the rows of wires may be worked with a sta-
tionary board, as heretofore; and other of the rows of wires have move-
able boards, the power of opening two sheds, as above described.
Having thus described the nature of my Invention, and the manner
of performing the same, I would have it understood that I do not
confine myself to the precise details herein shown and described; but
what I claim is, the mode of combining jacquard apparatus herein
described.
In witness whereof, I, the said Benjamin Burrows, have hereunto
set my hand and seal, this Fourteenth day of January, in the
year of our Lord One thousand eight hundred and fifty-four.
BENJAMIN BURROWS. (L.S.)
Witness, J. G. TONGUE.