CERTAIN IMPROVEMENTS IN JACQUARD APPARATUS
Year: 1853

page_text: LETTERS PATENT to John Clegg Boond, of the City of Manchester,
Warehouseman, for the Invention of "CERTAIN IMPROVEMENTS IN
JACQUARD APPARATUS."
Sealed the 23rd December 1853, and dated the 18th August 1853.
PROVISIONAL SPECIFICATION left by the said John Clegg Boond
at the Office of the Commissioners of Patents, with his Petition, on
the 18th August 1853.
I, JOHN CLEGG BOOND, of the City of Manchester, Warehouseman, do
hereby declare the nature of the said Invention for "CERTAIN IMPROVE-
MENTS IN JACQUARD APPARATUS" to be as follows:-
My Invention consists in an improved combination of parts applicable
to jacquard machines whereby a cheaper material may be used in place
of cardboard for acting upon the jacquard needles.
At each side of the machine is a horizontal rod, the front ends of
which are acted upon by the jacquard cylinder, and the other ends
of which are united by a back board pressing upon the heels of the
needles. A notch projects from each side rod; this notch is held
P
Spe

page_text: against the end of a spring stop when the gripe is down by a weight
connected to the side rod by a cord passing over a guide pulley.
To the frame of the jacquard machine is hinged a lever, from which
descends a slight rod, the lower end of which passes through the spring
stop, and to the gripe is fixed a stud, which in rising elevates the end
of the lever; the same stud in descending depresses the end of the
lever, thereby disengaging the spring stop from the notch projecting
from the side rods; the weights. before mentioned then draw the side
rods forward, thereby bringing the back board against the heels of the
needles, and throwing all the hooks off the knives. The cylinder in
advancing forces back the side rods, thereby pushing the projections on
them beyond the spring stops; at the same time the slips of paper or
jacquard cards act on the needles, and place the hooks required for the
next lift over the knives. The hooks are connected to flat sides passing
through a guide plate, and the hooks-being supported by these flat sides
are not influenced by the weight of the mounting, and are consequently
at liberty to be moved freely, when required.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Clegg Boond in the Great Seal Patent
Office on the 18th February 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, 1,
JOHN CLEGG BOOND, of the City of Manchester, Warehouseman, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of August, in the year
of our Lord One thousand eight hundred and fifty-three, in the seven-
teenth year of Her reign, lid, for Herself, Her heirs and successors,
give and grant unto me, the said John Clegg Boond, Her special
licence that I, the said John Clegg Boond, my executors, administra-
tors, and assigns, or such others as I, the said John Clegg Boond, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter luring
the term therein expressed, should and lawfully might make, use,

page_text: 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 APPARATUS," upon the condition
(amongst others) that I, the said John Clegg Boond, 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
same was to be performed, and cause the same to be filed in the
Great Seal Patent Office within six calendar months next and imme-
liately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Clegg Boond, do hereby
declare the nature of my 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):
My Invention consists in an improved combination of parts applicable
to jacquard engines whereby the springs usually employed for bringing
back the horizontal needles are dispensed with, and the same effect
produced with less power, thereby permitting the use of paper or
thinner card board than is usually employed for the jacquard cards; and
in order that my Invention may be fully understood, and readily
carried into effect, I will proceed to describe the accompanying Sheet
of Drawings, reference being had to the figures and letters marked
thereon.
DESCRIPTION OF THE DRAWING.
Fig. 1, is a side elevation of a jacquard engine to which my im-
provements are applied; Fig. 2, is a front view, and Figure 8, a plan,
partly in section, of the same; Figures 4, and 5, are two detached
views of part of my improvements, drawn full size. a, a, are the side
frames; b, b, are the side bars supporting the jacquard prism c, which is
moved to and fro' when the grife d, ascends and descends by the
inclined slot pieces b', in the ordinary manner; e, e, are the horizontal
needles, and ff, the vertical hooks, which are also made as usual; but
the needles e, instead of being pushed forward by springs coiled around
them, as is now customary, are acted upon by the hack board g, in the
following manner at each side of the engine and parallel to the
bars b, are two rods y', the front ends of which are acted upon by the

page_text: jacquard prism, and the other ends pass through the back board I, to
which they are fixed by nuts, as seen in Figures 1, and 3; the rods g',
are furnished with notches at their under side, into which notches the
springs henter when-the-board-g, is back; the vertical wires i, which
are provided with shoulders, pass through holes in the springs h, and
are jointed above to the levers j, which are hinged to the frames a,
at j'; the rods g', are held against the ends of the springs h, by the
weights k, and cords ', which pass over guide pulleys . The mode
of operation is as follows: when the grife is down, and the jacquard
prism is in; all the horizontal needles e, which come opposite blank
spaces in the jacquard card, are pushed back, as shown in the first,
third, fifth, and seventh rows in Figure 1, and they remain in that
position during the ascent of the grife; while the grife is ascending
the studs d', come in contact with and raise the ends of the levers j,
until they assume the position shown in dotted lines; the studs d', are
then beyond the reach of the ends of the levers j, which then drop
into their original positions by their own gravity, and the grife con-
tinues to ascend, carrying with it in the ordinary manner those hooks f,
that are in connection with the first, third, fifth, and seventh rows of
needles, pressed back, as above described. When the grife descends the
studs d', come against and depress the ends of the levers j, thereby
causing the shoulders of the wires i, to depress the ends of the springs h,
beyond the notches in the rods g', which are then at liberty to be
drawn forward by the weights k, thereby bringing the back board g,
home, and pushing the horizontal needles e, forward. The jacquard
prism, which during the ascent of the grife had been turned round onc
fourth of a revolution in the ordinary manner, is now advancing
towards the needles e, and when the grife is down the jacquard prism
acting on the ends of the rods g', pushes back the board g, and such of
the needles c, as are selected by the jacquard card; the springs h, again
catch into the notches of the rods g', and the various parts resume their
original positions. In order to retain the needles e, in their proper
positions after they have been acted upon by the jacquard card, or by
the back board g, I propose to bend each needle, as shewn best in
Figure 4; each row of needles is also furnished with a cord 7, of
.

page_text: india-rubber, or other suitable clastic material, passing through holes
in the grid ; and in order to protect the elastic material I cover it
above each needle with a thin tube of metal or other suitable material.
When the needle e, is pushed to or fro' the bent part rises over the
transverse wires m, and in so doing the needle overcomes the pressure
of the spring cords 7, which bear at all times on the needles e, thereby
reducing the liability of vibration in the vertical hooks f.
Another mode of preventing or reducing the vibration of the vertical
hooks f, is by magnetising the knives of the grife and the back bars o;
the effect thereby produced is, that when the vertical hooks f, are
moved to or fro' by the action of the jacquard cards, or by the back
board g, they are retained in their proper positions by the magnetic
influence. The vertical hooks f, are jointed below to flat plates f', and
the mounting is fastened to the lower extremity of those flat plates,
instead of to the hooks themselves, as now practised; by this means the
hooks f, are prevented turning round, and are easily influenced by the
action of the jacquard cards or of the back board g. The flat plates f',
are guided by the plate a³, and their lower ends are supported by the
board, through which pass the mounting threads in the usual
manner.
Having thus described the nature of my Invention, and the manner
of performing the same, I declare that I claim the improvements
herein-before described for reducing the power required for working
the needles, and for preventing or diminishing vibration in the vertical
hooks of jacquard engines.
In witness whereof, I, the said John Clegg Boond, have hereunto
set my hand and seal, this Tenth day of February, One thou-
sand eight hundred and fifty-four.