Improvements in Jacquard Machines.
Year: 1891

page_text: Date of Application, 21st Feb., 1891
Complete Specification Left, 18th Nov., 1891-Accepted, 2nd Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in Jacquard Machines.
ROBERT HUTCHISON Woodhead Street Dunfermline N.B. Machine Maker do
hereby declare the nature of this invention to be as follows:-
--
The machine is a "
cross border" Jacquard machine which has two cylinders,
cne at the front and one at the back. The needles, running from front to back,
can be acted upon by ordinary jacquard cards on either of the two cylinders, but
only one cylinder will be in operation at a time. The front cylinder will work the
cards which make the centre or repeat portion of the woven pattern, and on being
thrown out of gear the back cylinder will come into work to weave the border
portion of the design; or the back cylinder may work the centre or repeat cards
and the front cylinder work the border cards. Both cylinders will act directly
upon the same set of needles but on opposite ends.
The slide, up and down which the lifter rises and falls, opens into two bottoms,
into either of which the lifter falls according as it is guided by a switch bracket.
After working for a time in one of the bottom parts of the slide, during which the
centre or repeat portion of the pattern may be making, the switch is moved across
the opening of that bottom part, and the lifter then falls into the other bottom
bringing the border portion of the pattern into work and throwing out of gear the
centre or repeat portion of the pattern.
The cylinders are carried by two slide rods running parallel with the needles.
The slide rods are moved backwards & forwards by means of a switch bracket
on each slide rod, and requires only a short travel, merely enough to clear the
points of the needles by the cylinder.
The upright wires are each made double throughout and twisted at that part
that rests on the bottom rods when at rest. From the twisted part the double
wires rise up parallel half an inch apart. A hook is made on the end of each, one
hook facing each cylinder. The brander split works between the front hook of
one upright & the back hook of the next. Each cylinder pushes the brander
splits under its own set of hooks, the movement occurring when the brander
splits are below the hooks. The upright wires being double gives spring to
both hooks, which are held in their places by cross rods and not by the
needles as in an ordinary machine. The needle has a long eye which takes in
both hooks of the uprights, & allows it to act on one hook without moving the
other.
Dated this 21st day of February 1891.
COMPLETE SPECIFICATION.
Improvements in Jacquard Machines.
1, ROBERT HUTCHISON, Woodhead Street, Dunfermline, N.B. Machine Maker,
do hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
6
My invention is a cross border" Jacquard machine which has two card
cylinders, one at the front; and one at the back. The needles, running from front
to back, can be acted upon by ordinary jacquard cards on either of the two
D71

page_text: cylinders, but only one cylinder will be in operation at a time. The front
cylinder W Fig. 1 will work the cards which make the centre or repeat portion of
the woven pattern, and, on being thrown out of gear, the back cylinder Z Fig. 1
will come into work to weave the border portion of the design; or the back
cylinder may work the centre or repeat cards, and the front cylinder work the
border cards. Both cylinders act directly upon the same set of needles but on
opposite ends.
The lifter carries a stud & pulley O Fig. 1 which works into a double-curved
slotted bracket A Fig. 1 fixed upon, and giving motion to, the two slide rods (one
of which is shewn N Fig. 1) which carry the two card cylinders. The stud &
pulley O Fig. 1 is guided into either of the two curved slots by means of a switch
bracket B Fig. 1 which is shown set to change from working card cylinder Z
Fig. 1 to work card cylinder W Fig. 1. As the stud & pulley O Fig. 1 is raised
by the lifter, the pulley presses back the switch bracket until the pulley is raised
above the point of the switch, when, by the action of the spring on switch B Fig. 1
and slide rod N Fig. 1, the switch springs back into its present position and so the
stud & pulley is guided into the open curved slot.
The whole movement is
reversed by the operator pulling the cord attached to the spring on bell crank L
Fig. 1, and fixing it until the movement is again reversed.
The cylinders W & Z Fig. 1 are carried by two slide rods (one of which is
shown N Fig. 1) running one at each side of the machine parallel with the needles.
The slide rods, moving backward & forward with the switch bracket A Fig. 1 on
each slide rod, require merely enough travel to enable the points of the needles to
be cleared by the cylinders when turning.
The upright wires are each made double throughout same as shown P. R. Fig. 2,
the bottom part of the double resting on a grooved bottom board, with a wire
frame J Fig. 2 below, to keep the loops or neck-bands the proper distance apart
from each other. The two halfs of each double wire run up about half an inch
apart from near the centre where they are bent double. They are kept at this
distance by a stop-band of tin S Fig. 2, to take off friction, soldered to one of the
two halfs, and enclosing both, which prevents the ends from springing outwards
and from pressing on the needles. The two halfs terminate in hooks turning
outwards; one hook facing each cylinder. The upright wires are prevented from
turning by strips of wood H Fig. 2 one of which runs through each row of double
wires from side to side.
The brander splits E Figs. 1 & 2 which are fitted into V-shaped brander ends
to allow the splits to rock on their under edge are moved to work either under the
front hook of one upright or the back hook of the next.
When either of the
cylinders, say W Fig. 1, is brought into work, it pushes forward, by means of
the projection M Fig. 1, the rod C Fig. 1, throwing the brander splits E Figs. 1
& 2 (which have been working under the hooks facing the cylinder Z Fig. 1) over
to work under the hooks facing the cylinder W Fig. 1. Each cylinder thus pushes
the brander splits under its own set of hooks, the movement occurring when the
brander splits are below the hooks.
The needles F Fig. 2 are each made with two cranked eyes of sufficient length
to take in the double upright. One eye receives the upright. The second eye
rests on cross wires and keeps the needle from turning and the cranked eye round
the upright from dragging on it when the upright is moved up or down. The
needles Fig. 2 are acted upon at one end X Fig. 2 by the cards on cylinder Z
Fig. 1, or at the other end G Fig. 2 by the cards on cylinder W Fig. 1.
When a
needle is pushed by the cards at X Fig. 2 the front hook will be pushed back by
the front knee of the cranked eye on the needle, as indicated at R Fig. 2.
the needle is pushed by the cards at G Fig. 2 the back hook will be pushed
forward by the back knee of the cranked eye on the needle, as indicated at P
Fig. 2.
There is sufficient spring in the upright double wire to bring the needle
back to its normal position,
When

page_text: Having now particularly described and ascertained the nature of my said inven
tion, and in what manner the same is to be performed, I declare that what ]
claim is:
The aplication to Jacquard machines of the herein described improvements:
1. Two cylinders acting directly on one set of needles.
2. Double-acting, double-hooked, upright wires, with stop-band to take of
friction.
3. Double-curved, slotted reversing bracket.
4. Movement of the brander splits by means of the cylinder lathes or carriers.
Dated this Sixteenth day of November 1891.
ROBERT HUTCHISON.