Improvements in Jacquard Harness.
Year: 1889

page_text: Date of Application, 18th Jan., 1889
Complete Specification Left, 18th Oct., 1889-Accepted, 23rd Nov., 1889
PROVISIONAL, SPECIFICATION.
Improvements in Jacquard Harness.
We WILLIAM FIELDING and HENRY ARTHUR FIELDING both of 462 Oldham Road
Manchester in the County of Lancaster Jacquard Machinists and Harness Builders
do hereby declare the nature of this invention to be as follows :—
The object of our invention is the construction of Jacquard harness in such a
manner that the same harness can be utilized for weaving cloths of different degrees
of fineness in the reed.
Under the present method, if a harness is required to weave a coarser reed than it
is tied up for, it is necessary to "cast out," that is to leave certain portions of the
harness idle. For example, suppose a harness to be tied up to 400 hooks, 100 reed
(i.c. 100 ends per inch in the harness) it would be necessary, in order to weave
80 reed cloth, to cast out one fifth of the harness, thus reducing the scope of the
Jacquard machine to 320 hooks.
Our invention consists of the application of two combor board frames, containing
narrow slips or pieces of wood or other substance, perforated for the harness threads
to pass through. One frame is fixed above the other and by altering the position of
the "slips," in a horizontal direction by interposing blank slips in one or both frames
we are able to alter the harness so as to weave cloths of different reeds without
casting out."
"
In some cases we also make use of long mails having a number of eyes one above
the other instead of ordinary mails with one eye. The warp is then drawn through
whichever of the mail eyes are on the level.
Dated this 17th day of January 1889.
GEORGE DAVIES,
4, St. Ann's Square, Manchester, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Jacquard Harness.
We WILLIAM FIELDING and HENRY ARTHUR FIELDING both of 462 Oldham Road
Manchester in the County of Lancaster Jacquard Machinists and Harness Builders
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 our invention is the construction of Jacquard harnesses in such a
manner that the same harness can be utilized for weaving cloths of different degrees
of fineness in the reed.
Under the present method, if a harness is required to weave a coarser reed than it
is tied up for, it is necessary to "cast out," that is, to leave certain portions of the
harness idle.
For example, suppose, a harness to be tied up to 400 books, 100 reed (i.e. 100 ends
per inch in the harness) it would be necessary, in order to weave 80 rend cloth, to
cast out ono fifth of the harness, thus reducing the scope of the Jacquard machine to
320 hooks.
Our invention consists of the application of two comberboard frames containing
narrow slips or pieces of wood or other substance, perforated for the harness threads
to pass through.
One frame is fixed above the other and by altering the position of the "slips" in
a horizontal direction by interposing blank slips or by other convenient means in one

page_text: or both frames we are able to alter the harness so as to weave cloths of different reeds
without "casting out."
These two comber-board frames are shown on the accompanying drawing at a
and b a few of the slips being indicated at c, in the frame a and d in the frame b;
e are the mails which are of the ordinary kind, are the lingoes, g are the hooks of
the Jacquard machine part of the framing being shown at h.
For the sake of clearness we have only illustrated the harness tied up to one of the
Jacquard hooks.
The drawing shows that for two degrees of fineness in the reed the slips in the
upper frame a need not be moved, as they will be set at distances vertically midway
between the two positions of the mails e and the lower slips d.
The full lines show the position of the cords i and mails e when weaving with
the finer reed, the dotted lines show their position when the coarser reed is used.
By varying horizontally the relative positions of both sets of slips c and d the same
harness can be utilized for intermediate degress of fineness in the reed as the same level
in the mails e can always be retained thoreby.
Instead of having perforated slips in the frame a sliding bars or rods may be
employed, these will have the same effect when adjusted horizontally of regulating the
level of the mail eyes.
It will be evident without illustration that instead of having two frames a and b
to maintain the level of the mails e we may make use of long mails having a
number of eyes one above the other instead of the ordinary mails; the warp is
drawn through which ever of the mail eyes are on the level according as the reed
employed is coarser or finer and in this caso a single comberboard of perforated slips
is employed.
As the variation of the level will be greater at the edges than towards the centre,
the length of the mails may vary, the shortest being at the centre which may have
but one eye if preferred.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
First. Jacquard harnesses constructed with two comber-board frames containing
perforated slips which are adjustable as hereinbefore described and illustrated by the
annexed drawing.
Secondly. Jacquard harnesses with one comberboard frame below containing adjust-
able perforated slips and a frame above containing adjustable bars of metal or other
substance as herein before described.
Thirdly. Jacquard harnesses constructed with one comber-board of perforated slips,
and mails having several eyes as and for the purpose described.
Dated this 17th day of October 1889.
GEORGE DAVIES,
4, St. Ann's Square, Manchester, Agent for the Applicants.