IMPROVEMENTS IN JACQUARD OR INDEX MACHINES
Year: 1862

page_text: LETTERS PATENT to John Leeming, of North Holme Mills, Bradford,
in the County of York, for the Invention of "IMPROVEMENTS IN JACQUARD
OR INDEX MACHINES."
Sealed the 6th January 1868, and dated the 10th July 1862.
PROVISIONAL SPECIFICATION left by the said John Leeming at the
Office of the Commissioners of Patents, with his Petition, on the 10th
July 1862.
I, JOHN LEEMING, of North Holme Mills, Bradford, in the County of York,
do hereby declare the nature of the Invention for "IMPROVEMENTS IN JACQUARD
OB INDEX MACHINES," to be as follows:-
This Invention has for its object improvements in jacquard or index
machines, being a simple and efficient arrangement and combination of the
working parts, whereby I am enabled to work with either what is known as a
double or single lift, and also to form a V shed, that is to lift the back heald
a greater height than the front one, and so cause less strain upon the warp
threads. To effect these objects I apply to one end of the machine two wheels,
made fast to each other, of different diameters and number of teeth, mounted
upon a stud or suitable supports, and to the other end a single wheel, con-
taining the same number of teeth and corresponding in diameter to the smaller
of the two wheels at the opposite end of the machine.; into each opposite dia-
uieters of the larger of the two wheels on the one end, and into each of the

page_text: opposite diameters of the small wheel at the other end of the machine I gear
racks working vertically; and into one diameter of the smaller of the two
wheels, which are made fast to each other, I gear another rack, working also
vertically; to this said rack and to one of the other racks which gears into the
small wheel at the opposite end of the machine, I affix the cross head from
which motion is imparted to the several parts of the machine. The knife or
griffe I connect by a pin joint to one of the vertical racks at one end, and by
a similar joint and slot to another rack at the opposite end; the bottom board
is similarly connected, by to different racks. Tho action of the machine will
cause a greater traverse of the knife or griffe at one of its ends than the other,
and also a similar difference in the bottom board. The knife or griffe will
traverse upwards when the bottom board is going down, and down when the
bottom board is rising. When a single lift is required that is to tread the
warp all in one direction, I remove the pins from the joints in which the
bottom board has previously worked when obtaining a double lift, and place
them in holes in projections from the end of the machine provided for them,
and passing through the bottom board, which will remove, it out of contact
with the racks and cause it to remain stationary, so that the knife or griffe
alone will traverse. The cylinder of the machine, I operate by affixing to one
of the vertical racks a finger 'working in the slotted end of a bell-cranked
lever which is mounted upon a stud on a stud-plate projecting from the end
of the machine; the other end of such lever is provided with a slot, into which
another stud made fast to the end of the frame of the cylinder works, so that
when the rack is raised, the bell-cranked lever will have the effect of drawing
the cylinder towards the needles of the machine, and when depressed, of with-
drawing the cylinder from the needles and turning it over by a catch or other
suitable means.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Leeming in the Great Seal Patent Office on the
10th January 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
LEEMING, of North Holme Mills, Bradford, in the County, of York, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Tenth day of July, in the year of our Lord One s
thousand eight hundred and sixty-two, in the twenty-sixth. year of Her

page_text: reign, did, för Herself, Her heirs and successors, give and grant unto
me, the said John Leeming; Her special licence that I; the said John
Leeming, my executors, administrators, and assigns, or such others as I, the
said John Leeming; my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times there
after 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 "IMPROVE-
MENTS IN JACQUARD OR INDEX MACHINES," upon the condition (amongst others)
that I, the said John Leeming, my executors or administrators, by an
instrument in writing under my, 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 I, the said John Leeming, 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 improvements in jacquard or index
machines, being a simple and efficient arrangement and combination of the
working parts, whereby I am enabled to work with either what is known as
a double or single lift, and also to form a V shed, that is to lift the back
heald a greater height than the front one, and so cause less strain upon the
warp threads. To effect these objects, I apply to one end of the machine two
wheels, made fast to each other, of different diameters and number of teeth,
mounted upon a stud or suitable supports, and to the other end a single wheel,
containing the same number of teeth and corresponding in diameter to the
smaller of the two wheels at the opposite end of the machine; into each oppo-
site diameters of the larger of the two wheels on the one end, and into each of
the opposite diameters of the small wheel at the other end of the machine I
gear racks working vertically, and into one' diameter of the smaller of the two
wheels which are made fast to each other, I gear another rack, working also
vertically; to this said rack and to one of the other racks which
gears into
the small wheel' at the opposite end of the machine I aflix the cross bead,
from which motion is imparted to the several parts of the machine. The knife
or griffe I connect by a pin joint to one of the vertical racks at one end, and
by a similar joint and slot to another rack at the opposite end; the bottom
board is similarly connected, but to different racks. The action of the

page_text: machine will cause a greater traverse of the knife or griffe at one of its ends
than the other, and also a similar difference in the bottom board. The knife
or griffe will traverse upwards when the bottom board is going down, and
down when the bottom board is rising. When a single lift is required that is
to tread the warp all in one direction, I remove the pins from the joints in
which the bottom board has previously worked when obtaining a double lift,
and place them in holes in projections from the end of the machine provided
for them, and passing through the bottom board, which will remove it out
of contact with the racks and cause it to remain stationary, so that the knife
or griffe alone will traverse. The cylinder of the machine I operate by affixing
to one of the vertical racks a finger working in the slotted end of a bell-
cranked lever, which is mounted upon a stud on a stud plate projecting from
the end of the machine; the other end of such lever is provided with a slot,
into which another stud made fast to the end of the frame of the cylinder
works, so that when the rack is raised the bell-cranked lever will have the
effect of drawing the cylinder towards the needles of the machine, and when
depressed, of withdrawing the cylinder from the needles, and turning it over
by a catch or other suitable means.
Having thus stated the nature of my said Invention, I will proceed more
fully to describe the manner of performing the same, reference being made to
the accompanying Drawings which shew those parts necessary for illustrating
this Invention.
:
Figure 1 is an end view of a jacquard or index machine, shewing the
position of the double wheel and rack, also the bell-crank lever and con-
nections for operating the cylinder; Figure 2 is an end view of the opposite
end to Figure 1, and shews by dotted lines the position of the single wheel and
rack; Figure 8 is a front view of the same machine, and shows the relative
position of the wheels and racks for operating the same, together with the
cross head, the griffe, and bottom board; Figure 4 is a detached view of the
bottom board; Figure 5 is also a detached view of the griffe. In Figure 1, A
is the frame of the machine; B, the rack, sliding in suitable bearings C and
D, and gearing into the smaller wheel E of the double wheel E, F. The
bottom board G is connected to the rack B by a pin H; to the rack B is
also attached a finger I, which projects therefrom into the slotted end of the
bell-crank lever J, which is mounted upon a stud K on a stud plate L, and
having at its opposite end another slotted end which embraces a stud M on
the arm of the cylinder frame N; O is a catch for turning the cylinder over
by coming in contact therewith as the cylinder recedes from the needles of
the machine; P is a catch for reversing the cylinder when required by the

page_text: attendant; Qis a rack to which the cross head R for operating the machine
is made fast, and is geared into the larger wheel F of the double wheel E and
F, and sliding in suitable bearings Q', Q', at its opposite extremities. It will
thus be seen that when the rack B is raised, the bell-crank lever J is operated
by the finger I, which will have the effect of bringing its other extremity, which
is attached to the frame N, carrying the cylinder S, into contact with the
needles. In Figure 2, T is a rack gearing into the wheel U, which is mounted
on suitable bearings and connected by the pin V to the griffe W; the rack T
is made fast to the cross head R and slides on bearings X, X. In Figure S
the cross head R is shown attached to the racks Q and T, and gearing into
the wheels U and F; the rack Y is geared into the opposite diameter of the
wheel U and is connected by a pin joint Y¹ to the bottom board G, and slides
on suitable bearings A' and A'. The rack Z is geared into the wheel E and
connected by a pin joint E' to the griffe W, and sliding in bearings B' and
B'. The rack B is geared into the opposite diameter of the wheel E and
connected by a pin H to the bottom board G, sliding in bearings C and D.
I is the finger on rack B for operating the bell-crank lever J, the griffe W
being connected with the rack T, which is geared into the wheel U at one
end and at the other end to the rack Z, which is geared into the smaller
wheel E, and the bottom board G being connected at one end with the rack
Y which also gears into the wheel U and the other end to the rack B which
is also geared into the smaller wheel E. By these means it will be under-
stood that when the cross head R is raised it will cause the griffe W and the
bottom board G to traverse a greater distance at one end than the other in
consequence of the difference (the extent of which may be varied) in the
diameters of the wheels, and thereby form an even V shed in the warp,
however many shafts or healds be used.
Having thus described the nature of my said Invention, and the manner
of performing the same, I would have it understood that I make no claim to
any of the mechanical parts separately; but what I claim is the combined
arrangement herein described.
In witness. whereof, I, the said John Leeming, have hereunto set
my hand and seal, this Seventh day of January, in the year of our
Lord One thousand eight hundred and sixte-thro
JOHN LEEMING. (L.S.)