Improvements in Jacquard Mechanism.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Jacquard Mechanism.
We, JOSE REIXACH, a Managing Director of Lister & Co., Ld., of Manningham
Mills, Bradford, in the County of York, and HERBERT SCOTT, of the same address,
Manufacturers' Assistant, do hereby declare the nature of this invention
to be as follows;-
The object of this invention is the improvement of jacquard mechanism
especially applicable to the weaving of double pile fabrics face to face where
two separate sheds are formed at the same time and two shuttles are thrown
simultaneously one into each shed.
In a former l'atent No. 19,444/6 granted to us there is described jacquard
mechanism by which the pile warps are divided simultaneously into three lifts
some being carried to the top of the upper shed, some remaining in the middle
between the two sheds and the remainder carried to the bottom of the lower shed.
Our present invention refers especially to those fabrics in which the pile warps
have only to be divided into two lifts each time that the shuttles are thrown
some being carried to the top of the upper shed for one pick and some carried to
the bottom of the lower shed at the next pick and so on.
We employ for this purpose by one method a similar construction of jacquard
mechanism to that shewn in Figure 4 of the specification of the aforesaid patent,
only that the two card cylinders are caused to press the two sets of needles alter-
nately in place of simultaneously. At the first pick or revolution of the loom
the upper cylinder presses the upper set of needles, the upper knives then rise
and carry up the upright needles selected and afterwards descend. At the second
pick the upper knives which are moveable laterally on a slide are caused by means
of a tappet or other motion, to move out of position so that they cannot engage
with the upright needles, the lower card cylinder presses the lower set of needles
and selects which of the upright needles are to go down with the bottom falling
board upon which the lower ends of the upright needles rest and which are to
remain hung on the lower set of knives which are fixed.
By another method one cylinder only is employed. The lower card cylinder
and wires are abolished, the bottom board is fixed and acts merely as a guide
to the upright needles or to bands attached thereto. The lower set of knives
lifts the upright needles from the bottom to the middle position, the upper card
cylinder then presses and selects the needles which are to be raised these are
carried up to the top position by the upper set of knives during this movement
the lower set of knives remain stationary and give simultaneously the middle
position.
The bottom board may be used to lift the upright needles from the bottom
to the middle position in this case the lower set of knives are abolished: the
movements are the same as before the top lift being made to the top and back
again to the middle position while the board remains stationary, and the bottom
877

page_text: position being obtained by the descent of the board to the bottom position and
back again to the middle while the upper knives remain stationary, the card
cylinder selecting the needles for both these movements.
If knotted cords or bands be used with perforated boards instead of upright
hooked, needles acting with knives we similarly so arrange them that when
actuated by the card cylinder the knots are either moved clear of a narrow slot
in a travelling board into a larger hole through which they can pass and so are
not lifted or are not upheld by the board, or they are allowed to be caught by the
narrow slot and are lifted or upheld.
The action is as follows. To obtain the bottom tread the bands are all lowered
by means of a top travelling board to which they are attached the card cylinder
selects those bands which are to be caught by the slots in the perforated travelling
board which for this pick is stationary and allows the knots of the remainder
to fall through the large holes in the board to the bottom of the bottom shed;
the top board having regained its original position the top lift for the second pick
is obtained by the bottom slotted travelling board moving upwards, the card
cylinder selecting those bands the knots of which are to be caught in the narrow
slots and so carried up by the board the remainder being held in the middle
position by the top board which is stationary for this pick.
Dated this 3rd day of December 1897
J. REIXACH.
HERBERT SCOTT.
Improvements in Jacquard Mechanism.
We, JOSE REIXACH, a Managing Director of Lister & Co. Ld., of Manningham
Mills, Bradford, in the County of York, and HERBERT SCOTT, of the same address,
Manufacturers' Assistant, 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:-
-
The object of this invention is the improvement of jacquard mechanism
especially applicable to the weaving of double pile fabrics face to face where
two separate sheds are formed at the same time and two shuttles are thrown
simultaneously one into each shed.
In a former Patent No. 19,44496 granted to us there is described jacquard
mechanism by which the pile warps are divided simultaneously into three lifts
some being carried to the top of the upper shed, some remaining in the middle
between the two sheds and the remainder carried to the bottom of the lower shed.
Our present invention refers especially to those fabrics in which the pile warps
have only to be divided into two lifts each time that the shuttles are thrown
some being carried to the top of the upper shed for one pick and some carried to
the bottom of the lower shed at the next pick, and so on.
We employ for this purpose by one method, a similar construction of jacquard
mechanism to that shown in Figure 4 of the specification of the aforesaid patent,
only that the two card cylinders are caused to press the two sets of needles alter-
nately in place of simultaneously. At the first pick or revolution of the loom
the upper cylinder presses the upper set of needles, the upper knives then rise
and carry up the upright needles selected and afterwards descend. At the second
pick the upper knives which are moveable laterally on a slide are caused by means
of a tappet or other motion, to move out of position so that they cannot engage
with the upright needles, the lower card cylinder presses the lower set of needles

page_text: and selects which of the upright needles are to go down with the bottom falling
board upon which the lower ends of the upright needles rest, and which of the
upright needles are to remain hung on the lower set of knives which are fixed.
The above construction is illustrated at Figure 1 of the drawings annexed.
The position into which the upper knives a are moved for the second pick
is shown in dotted lines at a¹.
This movement is given to the upper knives by a lever 80 which moves the
rack 10 carrying the knives and is actuated by an arm 75 on the swing arm 21
of the card cylinder E; this swing arm also carries an arm 78'on which is pivotted
a rod 77 actuated by an eccentric 76; a second rod 79 connects the lower and
upper card cylinders E and G which are thus caused to alternately press the
needles H and K.
By another method one cylinder only is employed. The lower card cylinder
and wires are abolished, the bottom board is fixed and acts merely as a guide
to the upright needles or to bands attached thereto. The lower set of knives
lifts the upright needles from the bottom to the middle position, the card
cylinder then presses and selects the needles which are to be raised, these are
carried up to the top position by the upper set of knives, during this movement
the lower set of knives remains stationary and gives simultaneously the middle
position.
The bottom board may be used to lift the upright needles from the bottom
to the middle position, in this case the lower set of knives are abolished; the
movements are the same as before, the top lift being made to the top and back
again to the middle position while the board remains stationary, and the bottom
position being obtained by the descent of the board to the bottom position and
back again to the middle while the upper knives remain stationary, the card
cylinder selecting the needles for both these movements.
Figure 2 shows the above construction.
The bottom board 50 is fixed and acts merely as a guide to the upright needles 51
or to bands attached thereto. The lower set of knives 52 lift the upright needles
from the bottom to the middle position. The card cylinder 53 then presses and
selects the needles which are to be raised, these are carried up to the top position
by the upper set of knives 54; during this movement the lower set of knives
remains stationary and gives simultaneously the middle position.
The bottom board 50 may be used to lift the upright needles from the bottom
to the middle position, in this case the lower set of knives 52 is abolished, the
movements are the same as before, the top lift being made to the top and back
again to the middle position while the board 50 remains stationary, and the
bottom position being obtained by the descent of the board to the bottom position
and back again to the middle while the upper knives 54 remain stationary, the
card cylinder 53 selecting the needles for both these movements.
If knotted cords or bands be used with perforated boards instead of upright
hooked needles acting with knives we similarly so arrange them that when
actuated by the card cylinder the knots are either moved clear of a narrow slot
in a travelling board into a larger hole through which they can pass and so are
not lifted or are not upheld by the board, or they are allowed to be caught by the
narrow slot and are lifted or upheld.
The action is as follows:-To obtain the bottom tread the bands are all lowered
by means of a top travelling board to which they are attached the card cylinder
selects those bands which are to be caught by the slots in the perforated travelling
board which for this pick is stationary and allows the knots of the remainder
to fall through the large holes in the board to the bottom of the bottom shed;
the top board having regained its original position the top lift for the second pick
is obtained by the bottom slotted travelling board moving upwards, the card
cylinder selecting these bands the knots of which are to be caught in the narrow
slots and so carried up by the board the remainder being held in the middle
position by the top board which is stationary for this pick.

page_text: Figures 3 and 4 show diagram views of the above construction.
60, 60¹ are the knotted cords or bands. When actuated by the card cylinder 62,
the knots 63, 63¹ are either moved clear of a narrow slot 64 (in the board 61)
into a larger hole 65 through which they can pass and so are not lifted or are not
upheld by the board, or they are allowed to be caught by the narrow slot and are
lifted or upheld.
To obtain the bottom tread as illustrated in Figure 3 the bands are all lowered
by means of a top travelling board 66 to which they are attached, the card
cylinder 62 acting on the bands 60, 60¹ selects which are to be caught by the
slots in the board 61, which for this pick is stationary, and allows the remainder
to fall through the large holes in the board to the bottom of the bottom shed;
the top board 66 having regained its original position the top lift for the second
pick is obtained by the bottom slotted travelling board moving upwards as illus-
trated by Figure 4, the card cylinder 62 selecting those bands the knots of which
are to be caught in the narrow slots and so carried up by the board, the remainder
being held in the middle position by the top board 66 which is stationary for
this pick. 67, 671 are the pile warp threads, 68, 681, 682 are the ground warp
threads actuated by the healds 69. 70, 70 are the two shuttles thrown simul-
taneously.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is: -
1. The construction of jacquard mechanism substantially as hereinbefore first
described and illustrated in Figure 1 in which the jacquard cylinders are
employed to act alternately.
2. The construction of jacquard mechanism substantially as herein before
described and illustrated at Figure 2.
3. The construction of jacquard mechanism substantially as hereinbefore
described and illustrated at Figures 3 and 4.
Dated this 23rd day of August 1898.
J. REIXACH.
HERBERT SCOTT.