Improvements in Jacquard Weaving.
Year: 1890

page_text: Date of Application, 26th Aug., 1890
Complete Specification Left, 22nd May, 1891-Accepted, 27th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in Jacquard Weaving.
1, JAMES EDELSTON of Manchester Mill, Preston, Manufacturer, do hereby
declare the nature of this invention to be as follows:-
The improvements relate to jacquard weaving, and have for object a more
developed utilization in the production of pattern or design of what is known as
the double-lift jacquard, and consist in a method of tying up the healds to the
hooks of the jacquard, and the punching of the cards to suit the same.
To effect this, and to accomplish my improvements, instead of connecting one
string or heald, or one neck of strings or healds to the hooks of both lifts of the
jacquard, so that either lift may be caused to operate the same at will, as is the
ordinary method, I connect half the strings or healds, whether singly or in necks,
to the hooks of one lift of the jacquard, and the other half to the hooks of the
second lift of the jacquard; by which means, a jacquard of any number, as for
instance, a 400 jacquard, is enabled to weave designs of twice the width of its
ordinary capacity, whether such designs be those known as centred designs or not.
Certain limitations of forms of weaving are necessarily fixed by these improve-
ments, such limitations being caused by the fact that one warp thread can only be
lifted at every other pick of the loom, and cannot be allowed to remain in the
bottom shed excepting for an odd number of picks, but in nearly all kinds of
weaving this forms little or no real draw-back, as the design can be sufficiently
imitated under the conditions imposed.
Variations in detail may be made, such as the number of healds or strings bunched
together in necks, and the character of the ground and pattern to be woven,
without departing from the peculiar character of the invention, which mainly
consists in tying up to and operating half the healds, (that is to say those
actuating every alternate warp thread) by one lift of the jacquard, and the other
half to the second lift thereof, for the purpose named, instead of connecting
the whole of the healds to both lifts as is at present the practice in jacquard
weaving.
Dated this 25th day of August 1890.
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent.
COMPLETE SPECIFICATION.
Improvements in Jacquard Weaving.
I, JAMES EDELSTON, of Manchester Mill, Preston, Manufacturer, 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 jacquard weaving, and have for object a more
developed utilization in the production of pattern or design of what is known as
the double lift jacquard, and consist in a method of tying up the healds to the hooks
of the jacquard, and the punching of the cards to suit the same.
To effect this, and to accomplish my improvements, instead of connecting one
string or heald, or one neck of strings or healds to the hooks of both lifts of the
jacquard, so that either lift may be caused to operate the same at will, as is the
ordinary method, I connect half the strings or healds, whether singly or in necks,
[Price 4d.]

page_text: to the hooks of one lift of the jacquard, and the other half to the hooks of the
second lift of the jacquard; by which means, a jacquard of any number, as, for
instance, a 400 jacquard, is enabled to weave designs of twice the width of its
ordinary capacity, whether such designs be those known as centred designs or not.
Certain limitations of forms of weaving are necessarily fixed by these improve-
ments, such limitations being caused by the fact that one warp thread can only be
lifted at every other pick of the loom, and cannot be allowed to remain in the
bottom shed excepting for an odd number of picks; but in nearly all kinds of
weaving this forms little or no real drawback, as the design can be sufficiently
imitated under the conditions imposed.
Variations in detail may be made in the tying up hereinbefore described, that is
to say, each hook may have tied to it either a single heald, or a neck, or bunch or
cluster, composed of any number of healds which the pattern may require.
The invention consisting in the main in tying up the healds to the two lifts or
sets of hooks of the jacquard, in such manner that the hooks of one lift actuate a
different set of warp yarns to what are actuated by the other lift, instead of allowing
the hooks of one lift to actuate the same warp yarns as are actuated by the other
lift, as is now the practice, by which means the capacity of the jacquard for many
forms of weaving is doubled.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
In jacquard weaving by "double lift" jacquard, the tying up of the healds actuating
every alternate end of warp yarn, to the hooks of one lift; and the remaining
healds to the hooks of the other lift; whether tied singly or in necks or clusters,
for the purpose of producing a more developed pattern, and in manner substantially
as herein described.
1
1001
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for the Applicant.