Improvements in Top Jacquards used for Double Action on Lace Machines, Looms, and the like.
Year: 1891

page_text: Date of Application, 30th Dec., 1891
Complete Specification Left, 29th Oct., 1892-Accepted, 10th Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Top Jacquards used for Double Action on Lace
Machines, Looms, and the like.
We, WILLIAM TRUSWELL MARTIN, of Russell Street, Nottingham, Machinist,
and WILLIAM HIND of Russell Street aforesaid in the employ of the said
William Truswell Martin, do hereby declare the nature of our said invention to be
as follows
This invention consists of an improved top jacquard, in which two cylinders
are employed, one at the back and the other at the front of the jacquard, and both
being actuated in the usual manner, by a connection with the machine or loom.
The cross needles in the jacquard are so arranged that a selection from a card can
be obtained from either end of the needles, by the cylinder on which the cards
work pressing the needles in the usual manner. Springs are fixed at each end of
the cross needles, to return them into position, after being operated by the cards.
We also use a vertical needle, having a double hook turned in opposite directions,
at the top end, that is to say, the end which is worked upon by the grid or lift.
We also use an extra grid blade in the faller, that is to say, one more grid blade
than there are rows of needles in the jacquard, from front to back.
In order to render our invention double acting, by the operations of two cylinders,
we fit a sliding apparatus, or its equivalent, whereby one spring upon the cross
needle is rendered inoperative while the spring at the other end is operating. This
apparatus removes the plate or plates from the ends of the springs which are
required to be momentarily inoperative. Or the same effect may be produced by
removing the pins instead of the plates, thus giving the disused spring freedom to
expand inoperatively, along the needle.
The faller which carries the grids or lifters, acting upon the double hooks of the
needles, is worked at double the ordinary speed, one motion being for the co-opera-
tion of the front cylinder, and the other for that of the back cylinder; the motions
being obtained in the usual way by a connection or connections from the machine
or loom.
The jacquard is so arranged that one of the two cylinders can be thrown out of
work, when only one is required to be in operation.
December 1001
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent.
COMPLETE SPECIFICATION.
Improvements in Top Jacquards used for Double Action on Lace
Machines, Looms, and the like.
We, WILLIAM TRUSWELL MARTIN, of Russell Street, Nottingham, Machinist,
and WILLIAM HIND, of Russell Street aforesaid in the employ of the said
William Truswell Martin, 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 :-
In carrying out our invention, we use two cylinders, one at the front and the
other at the back of the jacquard, both of which receive their action in the usual
manner, by a connection from the machine or loom. The cross needles or horizontal
needles are arranged so that a selection from the cards can be obtained, at each

page_text: end of the needles, by the cylinders on which the cards work, pressing on the ends
of the needles in the usual way. We also use a. spring on each end of the cross
needles, to return them into position after being operated upon by the cards, and
also vertical needles, having two hooks, turned in opposite directions, at the top
end, that is to say, the end worked upon by the grid blade or lifter. We also use
an extra grid blade or lifter in the faller, that is to say, one more grid blade than
there are rows of needles in the jacquards from front to back; so that for what is
known in the trade as a 16 row jacquard, we use seventeen grid blades or lifters;
and in order to render our invention double acting by the use of the two cylinders,
we connect the two spring plates, against which the springs on the cross needles
push to receive their pressure, after being operated by the cards, by means of two
shafts or rods running parallel with the cross needles from back to front of the
jacquard; and to each of these shafts or rods we attach a bracket carrying a truck
and axle. We also use two slotted cams, to which we attach connections from
brackets on the cylinder slide rods, the slots in these cams being formed so as to
work upon the before mentioned trucks, thus giving motion to the two shafts or
rods carrying the spring plates. The movements of the spring plates are timed to
suit the movements of the cylinders; so that, when the front cylinder is working
towards the cross needles, to allow the card to operate as before described, the
front spring plate moves forward towards the cylinder, and the back spring plate
being connected to the front one, tightens up the springs at the other end of the
cross needles; the vertical needles being acted upon by the cross needles as in an
ordinary jacquard (that is, by a crank in the cross needle in which the vertical
needle works) are pushed by the spring plate on to the front sixteen grid blades or
lifters leaving the back grid blade or lifter unoccupied, and also rendering the
springs on the front end of the cross needles useless, by allowing them to expand
inoperatively upon the needles. The reverse motion takes place when the back
cylinder is operating upon the cross needles, leaving the front grid blade or lifter
unoccupied.
The faller which carries the grid blades or lifters, which act upon the double
hook vertical needles, is worked at double the speed of the cylinder, one motion
being for the co-operation of the front cylinder, and the other for that of the back
cylinder; the motion being obtained in the usual way by connection with the
machine or loom.
The jacquard is so arranged that one of the two cylinders can be thrown out of
work, when only one is required to be in operation.
And in order that our said invention may be particularly described and ascer-
tained, reference is hereby made to the accompanying drawings, in which similar
letters of reference indicate corresponding parts.
Fig. 1 is an elevation showing the position when the back cylinder A2 is working
towards the cross needles C.
Fig. 2 is an enlarged section, showing the position when the front cylinder A' is
working towards the cross needles C.
Fig. 3 is a detail view, showing the double hooked needles E, and a form of
crank in the cross needle C suitable thereto.
Fig. 4 is a side elevation of the jacquard.
Fig. 5 shows details of the motion for actuating the spring plates.
In the arrangement shown in the drawings, S is a stationary guide box, in
connection with the front spring plate H. is a pin, the two flat sides of which
act as guides to the vertical flats formed on the cross-needles C. uu are horizontal
pins fixed to the two sides of the guide box S. Between these pins the horizontal
Hats formed on the cross-needles C are guided, and the cross-needles are thereby
prevented from turning on their centres, and the cranks are also kept square to the
vertical needles E.
S¹ is the back fixed guide box carrying a slay, which is bored with circular holes
to receive and act as guides to the cross-needles C.
H is the front spring plate and H' is the back spring plate, both bored with

page_text: circular holes to receive and act as guides to the circular ends of the cross-
needles C C. The plates H and H' also act as spring pressure plates receiving
the end pressures of the springs D, coiled upon the cross-needles C. Short flats v
are also formed on the cross-needles C, against which small circular washers rest,
receiving the thrust of the springs D. These springs press against the inner sides
of the plates H H'.
G is the faller, or frame, carrying the grids or lifters F, the number of grids
being one more than that of the vertical needles E.
The method of forming the vertical needles E E is shown in Figs. 1 and 3.
The tail ends are guided in slots in the fixed slay was usual. The wires are fastened
together at intervals, as shown at rr, and the upper ends are bent to right and
left to form hooks p p.
Referring to Figs. 4 and 5, I is one of the shafts (of which there are two, one
at each end of the jacquard) which connect the two spring plates H, H', whereby
they are both moved simultaneously. J is the bracket carrying the truck and
axle K, on which the slotted cams L operate to more the spring plates H. H¹.
M is the connection attached to the slotted cams L, from the bracket N (of which
there are two, one at each end of the jacquard) on the cylinder slide rods O.
A represents the front cylinder and A' the back cylinder.
By a slight variation in the arrangement the spring plates H and H¹ may be
made stationary, and the guide boxes S and S₁ may be simultaneously moved to
and fro, whereby an equivalent action of the needles to that herein before described
may be obtained.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. In top jacquards as aforesaid, the improved method of mounting the double
ended cross or horizontal needles C in spring plates H and H¹ and guide boxes S
and S', for the purpose of moving the needles C to the positions in which the
jacquard cards on two cylinders may alternately select needles at the front and
back of the jacquard, such selected needles operating upon corresponding vertical
needles E in the usual manner, substantially as herein before described and
illustrated by the drawings.
2. In top jacquards arranged for double action as aforesaid, the method of
actuating the cross needles C and springs D by means of stationary guide
boxes S S', and simultaneously moving spring plates H H', substantially as herein
before described and illustrated by the drawings.
3. In top jacquards arranged for double action as aforesaid, the method of
actuating the cross-needles C and springs D by means of stationary spring
plates H H', and simultaneously moving guide boxes S S', substantially as herein
before described and illustrated by the drawings.
4. In top jacquards arranged for double action as aforesaid, the application and
use of vertical needles E E, each having two hooks pp, substantially as herein
before described and illustrated by the drawings.
5. The general construction and the several and respective arrangements and
combinations of parts, together constituting our invention of improvements in
top jacquards used for double action on lace machines, looms and the like, substan-
tially as herein before described and illustrated by the drawings.
Dated 28th October 1892.
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent.