CERTAIN IMPROVEMENTS IN JACQUARD MACHINES
Year: 1856

page_text: LETTERS PATENT to John Brown, of Bolton-le-Moors, in the County of
Lancaster, Machine Maker, and John Adin, of the City of Manchester,
Manufacturer, for the Invention of "CERTAIN IMPROVEMENTS IN JACQUARD
MACHINES."
Sealed tho 8th May 1857, and dated the 26th November 1856.
PROVISIONAL SPECIFICATION left by the said John Brown and John
Adin at the Office of the Commissioners of Patents, with their Petition,
on the 26th November 1856.
We, JOHN BROWN, of Bolton-le-Moors, in the County of Lancaster,
Machine Maker, and JOHN ADIN, of the City of Manchester, Manufacturer,
do hereby declare the nature of the said Invention for "CERTAIN IMPROVEMENTS
IN JACQUARD MACHINES," to be as follows:-
The nature of our Invention consists in an improved combination of parts
for giving motion to the cylinder or drum of jacquard machines, and for con-
necting the grife to the healds or harness, whereby the shed is formed, by
raising a portion of the healds or harness and allowing the other portion to be
drawn down by weights or springs. The swing frame of the cylinder or
drum is connected to the grife by a link, so that when the grife rises the
swing frame is moved outwards, and when the grife descends it is brought
towards the jacquard machine. The grife in rising takes up those hooks that

page_text: are connected to the healds or harness forming the upper portion of the shed,
and the grife being connected to a system of levers and links, allows the
healds or harness of the lower portion of the shed to be drawn down by the
action of the springs or weights attached thereto. In order to form an even
shed, the fulcrums of tho levers are connected to the links from the grife at
different distances.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Brown and John Adin in the Great Seal Patent
Office on the 25th May 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
BROWN, of Bolton-le-Moors, in the County of Lancaster, Machine Maker,
and JOHN ADIN, of the City of Manchester, Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of November, in the year of our
Lord One thousand eight hundred and fifty-six, in the twentieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said John Brown and John Adin, IIer special license that we, the said John
Brown and John Adin, our executors, administrators, and assigns, or such
others as we, the said John Brown and John Adin, our executors, adminis-
trators, 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 "CERTAIN IMPROVEMENTS IN JACQUARD MACHINES," upon
the condition (amongst others) that we, the said John Brown and John Adin,
our executors or administrators, by an instrument in writing under our or
their, or one of our or 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 Brown and John Adin, 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, that is to say:-
Our Invention relates principally to double-lift jacquard machines, or those

page_text: in which a portion of the hooks are raised, while the others are drawn down.
to form the shed, and consists, first, in an improved combinatian of parts for
giving motion to the cylinder or drum.
Secondly, in an improved mode of connecting the grife to the healds or
harness.
And, thirdly, in an improved mode of connecting the grife to the bottom
board, so as to produce an even shed, and in connecting the hooks to the
needles.
And in order that our Invention may be fully understood and readily
carried into effect, we will proceed to describe the accompanying Sheet of
Drawings, which represents our improved jacquard machine, reference being
had to the figures and letters marked thereon.
Fig. 1 is a transverse section, and Fig. 2 a front elevation. a, a, are the
side frames; b, the jacquard cylinder, which is supported by the elbow levers c,
shewn in section Fig. 2; d, d, are the needles; and e, e, the hooks, which are
bent in the form shewn in Fig. 1. The needles are supported in the usual
manner by the front board d¹ and back board d'. The bent up leg of the
hook passes through the eye of the needle, by which arrangement the requisite
elasticity is obtained.
The healds or harness are connected to the links f, depending from the
hooks e, as usual. The grife marked 9 is moved up and down by the lever h,
connected as heretofore to the crank shaft of the loom, and the lever h is
connected to the grife by the links i, i. To the grife are suspended the
links j, which are jointed below to the elbow levers c, supporting the jacquard
cylinder; by this means, when the grife descends, the cylinder approaches the
needles, and when the grife is up the cylinder is out, or in the position shewn
in the Drawing. To the top rail a', connecting the side frames a, a, are jointed
the levers k, k, connected to the grife by the links 1, 1, and to the bottom
board m by the links n, n.
The levers k have two or more holes for the fulcrum studs, and by varying.
the position of the lever on the stud at one side of the machine, the rise of
the hooks is varied so as to move the bottom board into a diagonal position,
thereby causing the hooks near the breast beam to rise and fall less than the
others, and thereby to produce an even shed.
The mode of operation is as follows:-When the machine is put in motion
the grife descends, thereby raising the bottom board m, the cylinder at the
same time approaches the needles d, and brings the jacquard card into contact
with their projecting ends, for the purpose of selecting those hooks that are
required to form the shed. If the card comes against the needles before the

page_text: hook is entirely free from the grife, the elasticity of the hook allows the needle
to yield to the pressure of the card without injuring it.
Having thus described the nature of our Invention, and the manner of
performing, the same, we wish it to be understood that we do not limit
ourselves to the details herein set forth; but that we claim as of our
Invention,-
First, the improved mode of working the jacquard cylinder, as described.
Secondly, the improved mode of connecting the grife to the healds or
harness, as described.
Thirdly, changing the fulcrum of the lever k at one side of the machine so
to produce an even shed, as described.
And, fourthly, the improved mode of connecting the hooks e to the needles d,
as shewn and described.
In witness whereof, we, the said John Brown and John Adin, have
hereunto set our hands and seals, this Twenty-third day of May, in
the year of our Lord One thousand eight hundred and fifty-seven.
Witness,
H. B. BARLOW,
Manchester.
JOHN BRO
JOHN ADIN.
(5.5.)
(L.B.)