Improvements in Looms for Leno Weaving.
Year: 1892

page_text: Date of Application, 27th Sept., 1892
Complete Specification Left, 24th June, 1893-Accepted, 29th July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Looms for Leno Weaving.
1, JOHN SHERWOOD, of 3 St. George's Street, Macclesfield, Cheshire, Designer,
do hereby declare the nature of this invention to be as follows:-
The improvements relate to what is known as leno weaving, and have for object
the more perfect and reliable easement of the warps at the time of the "cross,"
and the reduction of the number of needles in the jacquard for the purpose.
To accomplish this and to effect my improvements, I form those needles in the
jacquard which actuate the doup healds with supplementary or additional loops for
actuating at the same time the hooks operating the warp easers at the back of the
loom; by which means I effectually ensure the simultaneous operation of these
two objects by one and the same needle, thus economising the needles to that
extent.
I mount all the doup healds and doups with separate lingoes, so that each shall
act independently of the other, as is well understood; but I attach to each doup
lingo two separate easers consisting of strings or thin wires, or the like, which
easers are connected by preference to the two hooks which actuate the ordinary
healds in the same dent; by which means when either one or the other of these
ordinary healds is lifted for the purpose of figure weaving, it will lift or ease the
doup in that dent.
I am aware that single easers or helpers have been attached to doups for a
similar purpose, and actuated by special hooks in the jacquard, requiring separate
needles for their operation; but this is entirely different to my present invention,
wherein I employ two easers to cach doup, which easers are attached to separate
hooks employed for lifting the ordinary healds. The reaction to the bick warp
easers may be effected either by lingoes, springs, or the like, as is at present the
practice; and by preference, the warp threads passing through the doups are
arranged upon a separate roll or beam to the ordinary ones.
66
Variations in detail, such as the number of strings to one "neck" or bunch,"
the particular hooks selected for attachment to the doup easers, and also to the
back warp easers, together with the general form of jacquard employed, may be
made without departing from the peculiar character of the invention.
Dated this 26th day of September 1892.
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Looms for Leno Weaving.
I, JOHN SHERWOOD, of 3 St. George's Street, Macclesfield, Cheshire, Designer,
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 improvements relate to what is known as leno weaving, and have for object
the more perfect and reliable easement of the warps at the time of the "cross," and
the reduction of the number of needles in the jacquard for the purpose.
To accomplish this, and to effect my improvements, I form those needles in the
jacquard which actuate the doup healds with supplementary or additional loops for
actuating at the same time the hooks operating the warp easers at the back of the
loom; by which means I effectually ensure the simultaneous operation of these

page_text: two objects by one and the same needle, thus economising the needles to that extent.
I mount all the doup healds and doups with separate lingoes, so that each shall act
independently of the other, as is well understood; but I attach to each doup lingo
two separate casers consisting of strings or thin wires, or the like, which easers
are connected by preference to the two hooks which actuate the ordinary healds
in the same dent; by which means when either one or the other of these ordinary
healds is lifted for the purpose of figure weaving, it will lift or case the doup in
that dent.
I am aware that single easers or helpers have been attached to doups for a
similar purpose, and actuated by special hooks in the jacquard, requiring separate
needles for their operation; but this is entirely different to my present invention,
wherein I employ two easers to each doup, which easers are attached to separate
hooks employed for lifting the ordinary healds.
The reaction to the back warp casers may be effected either by lingoes, springs,
or the like, as is at present the practice; and, by preference, the warp threads
passing through the doups are arranged upon a separate roll or beam to the
ordinary ones.
But that the improvements may be better understood, I will, with the aid of the
accompanying drawings, proceed more fully to describe means employed by me.
DESCRIPTION OF DRAWINGS.
The figures shew three arrangements, according to my improvements, of one row
of needles and hooks, together with their healds and attachments for actuating or
easing the warp threads and doups.
The same letters indicate corresponding parts wherever they occur.
In Figs. 1. and 2, the needles 9. and 10 of the jacquard, are each formed with
two loops, 9, 9; 10", 10° actuating the hooks c, d, e, f, so that on the movement
of the needle 9, the hooks c, and e. will work simultaneously; and, in like manner,
on the actuation of the needle 10, the hooks d, and f, will move together.
Thus, neither of the doup healds g, h, to which the hooks c, d, are attached, can
be lifted without one of the corresponding warp easers k, l, attached to the
hooks e, f, being actuated at the same time.
m, n, are the doups; and o, p, q, r, the doup easers connected therewith, and-
as shewn in Fig. 1-attached to the hooks s, t, u, v, which hooks also actuate the
ordinary healds of the same dent, w, x; y, z.
As shewn in Fig. 2, this simultaneous action of the doup easers and the ordinary
healds of the same dent, is accomplished by forming all the needles which actuate
their hooks with two loops, as in the case of the warp easers. Thus, when weaving
figure with the arrangement as shewn in Fig. 1, the hooks s, t. release the threads
in doup m, and the hooks u, v, release the threads in doup n; whereas when
weaving the same with the arrangement as shewn in Fig. 2, the needles 3, 4,
actuate hooks a. b. to ease the threads in doup m, and the needles 7, 8, actuate
hooks i, j, to ease the threads in doup n; cach needle at the same time acting
upon a hook in connection with the corresponding ordinary heald of the dent.
Fig. 3, shews, as a variation, the arrangement of doup casers applied to an
ordinary jacquard; the special needles for simultaneous action of the doup healds
and warp easers not, in this case, being employed.
Variations in detail, such as the number of strings to one neck or bunch, the
particular hooks selected for attachment to the doup casers, and also to the back
warp casers, together with the general form of jacquard employed, may be made
without departing from the peculiar character of the invention; and portions only
may be employed as a modification.
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 I
claim is :-
1
In looms for love

page_text: supplementary or additional loops, for actuating, at one time, the hooks of the doup
healds, and those of the warp easers, in manner substantially as herein shewn and
described.
2. In looms for leno weaving, the employment of two doup easers to each doup,
each of which easers is connected to a hook actuating an ordinary heald of the
same dent, in manner substantially as herein shewn and described.
3. In looms for leno weaving, the employment of jacquard needles having
supplementary or additional loops, whereby hooks are operated to actuate, at one
and the same time, the two doup easers of each doup, and the ordinary healds of
the same dent, in manner substantially as herein shewn and described.
4. In looms for leno weaving, the combination of apparatus for simultaneous
action of warp easers and doup healds, with two doup casers to each doup, which
doup easers are connected with ordinary healds, in manner substantially as herein
shewn and described.
Dated this 23rd day of June 1893
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent.