of JACQUARD ENGINES." IMPROVEMENTS.
Year: 1868

page_text: LETTERS PATENT to John Pearson, of Thornton, near Bradford, in the
County of York, Jacquard Harness Maker, and Mason Pearson, of
the same Place, Overlooker,. for the Invention of
JACQUARD ENGINES."
IMPROVEMENTS IN
PROVISIONAL SPECIFICATION left by the said John Pearson and
Mason Pearson at the Office of the Commissioners.of. Patents, with
their Petition, on the 28th April 1868.
We, JOHN PEARSON; of 'Thornton, near Bradford, in the County of
York, Jacquard Harness Maker, and MASON PEARSON, of the same Place,
Overlooker, do hereby declare the nature of the said Invention for " IN-
PROVEMENTS IN JACQUARD ENGINES," to be as follows:-
This Invention relates to jacquard engines or apparatus employed in
pattern weaving, for which Letters Patent were granted to Alfred Barlow,
bearing date at Westminster, the 2nd day of November 1849, No. 12,833,
in the Specification of which it is shewn and described that for the
purpose of causing the loom to work with greater expedition some
parts of the apparatus are double or double-acting; these parts are two

page_text: sets of cards and card cylinders, two sets of needles with single-hooked
wire, and two "griffs" or lifting bars.
Now, our improvements consist in contracting the hooked wires
double, that is, the wires are doubled in the middle, and the two ends
coming together are hooked, the hooks being set in opposite directions to
each other, and the wires are caused to have a tendency to spring the two
hooks either away from each other, or press them close together; also in
having the needles so constructed and arranged that both the cylinders
will act on the same set of needles (when indicated by the cards), so
that one cylinder will push the needles in one direction, and the other
cylinder will push them in the opposite direction, one set therefore being
sufficient; these needles are so formed as to act upon one of the hooked
ends of a lifting wire when pushed in one direction, and upon the other
end when pushed in the opposite, thus if the said needles be to act upon
hooked lifters having a tendency to separate they are formed with a loop,
but if to act on those tending to press close together they are cranked.
By this Invention the hooked wires may be placed in position to hook
on either the ascending or descending griff or lifting bar according as
indicated by the cards or pattern surface.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Pearson and Mason Pearson in the Great Seal
Patent Office on the 28th October 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wе, JOHN
PEARSON, of Thornton, near Bradford, in the County of York, Jacquard
Harness Maker, and MASON PEARSON, of the same Place, Overlooker,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-eighth day of April, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said. John Pearson and Mason Pearson, Her
special licence that we, the said John Pearson and Mason Pearson, our
executors, administrators, and assigns, or such others as we, the said
John Pearson and Mason Pearson, our executors, administrators, and

page_text: 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 ENGINES," upon
the condition (amongst others) that we, the said John Pearson and
Mason Pearson, our executors or administrators, by an instrument
in writing under our, or their, or one of 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 Pearson and Mason Pearson,
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 and accompanying Sheet of Drawings
(that is to say)-
This Invention relates to jacquard engines or apparatus employed in
pattern weaving, for which Letters Patent were granted to Alfred Barlow,
bearing date at Westminster, the 2nd day of November 1849, No. 12,833,
in the Specification of which it is shewn and described that for the
purpose of causing the loom to work with greater expedition some parts
of the apparatus are double or double-acting; these parts are two sets of
cards and card cylinders, two sets of needles with single hooked wires,
and two griffs or lifting bars.
Now, our improvements consist in constructing the hooked wires
double, that is, the wires are doubled in the middle, and the two ends
coming together are hooked, the hooks being set in opposite directions
to each other, and the wires are caused to have a tendency to spring the
two hooks either away from each other, or press them close together;
also in having the needles so constructed and arranged that both the
cylinders will act upon the same set of needles when indicated by the
cards), so that one cylinder will push the needles in one direction, and
the other cylinder will push them in the opposite direction, one set
therefore being sufficient; these needles are so formed as to act upon one
of the hooked ends of a lifting wire when pushed in one direction, and
upon the other end when pushed in the opposite, thus if the said needles

page_text: be to act upon hooked lifters having a tendancy to separate' they are
formed with a loop, but if to act on those tending to press close together
they are cranked. By this Invention the hooked wires may be placed in
position to hook on either the ascending or descending "griff" or lifting
bar according as indicated by the cards or pattern surface.
In order that this invention may be more clearly understood I herein
give reference to an accompanying Sheet of Drawings of a double-acting
jacquard engine constructed according to this invention.
.
DESCRIPTION OF THE DRAWINGS..
Fig. 1 of these Drawings represents a vertical cross section of the
engine.
L
A is the framing, and B and B are the two cylinders, each carrying a
chain of cards C and C. These cylinders are pivoted in arms Diand D¹
'hinged to projecting parts of the frame E and E³, and are connected
together by an adjustable rod F; so as to be operated simultaneously,
which is effected by any usual means or appliances. G are a series
of griffs or lifting bars supported on arms G¹ attached to a plate or
frame G, which is fixed on two slide rods G³, one at each end of the
engine; H are another series of griffs or lifting bars attached to a
frame H' fixed on other two slide rods H. Each pair of slide rods are
connected by cross rails, to which are affixed racks I and J, in which
works a tooth wheel K fixed on a shaft K' supported on the framing,
and on which is fixed the lever arm K³, which is operated by a rod K³
from a crank on the low shaft of the loom when this engine is in use.
M are the double-hooked wires, the hooks of which in this Drawing are
shewn as having a tendancy to spring away from each other, or separate;
N are the needles, formed with loops N₁ for the wires to pass through,
and by which the said wires are placed and held in the required position.
These needles are supported so as to be capable of sliding in the rails P
in the usual manner. It will now be seen that by operating the lever
arm K' motion will be given to the two sets of griffs or lifting bars,
each set moving in opposite directions, and that the griffs are so arranged
as to pass each other; also it will be seen that the cylinder 'B' is now in
action on the needles, and the cards being suitably punched the needles
marked N', N', N, and N' are pressed in, and act on one limb of the
hooked wires which pass through them respectively, and thereby holding
the said hooks out of contact with the griffs H when they are being

page_text: lifted, and it will also be seen that as the two cylinders act upon the
needles alternately when in action the cylinder B will act upon the
other ends of the needles, as indicated or selected by the cards, and
thereby operate upon the other limbs of the hooked wires to place the
hooks in or out of position for contact with the griffs G as required.
Fig. 2 represents the hooked wires when made to press together, and
also the form of the needles required to be used for operating on such
hooks.
Having thus fully described the nature of this our said Invention, and
shewn by the accompanying Drawing how the same is or may be per-
formed or carried into practical operation, we would have it understood
that we do not confine or restrict ourselves to this or any other particular
construction of jacquard engine, nor do we claim the use of double-
action jacquard engines; but what we do claim as of our Invention, and
believe the same to be new is, the construction and use in connection
with double-action jacquard engines of double-hooked lifting wires and
needles so formed as to act upon either end or limb of the said wires,
according as indicated or selected by the cards or pattern surface, and
thereby to place them in position to take on to either the ascending
or descending griffs or lifting bars as required.
In witness whereof, we, the said John Pearson and Mason Pearson,
have hereunto set our hands and seals, this Twenty-sixth day of
October, in the year of our Lord One thousand eight hundred
and sixty-eight.
Signed, sealed, and delivered by the
within-named John Pearson and
Mason Pearson, in the presence
of
WN. TASKER,
Patent Agent,
Halifax & Bradford.
JOHN PEARSON. (L.S.)
MASON PEARSON. (L.S.)