Year: 1886

page_text: Date of Application, 27th Mar., 1886.
Complete Left, 28th Dec., 1886.
Complete Accepted, 28th Jan., 1887.
DESEDVE
I, WILLIAM GADD, of 64 Barton Arcade, Manchester, Civil and Consulting
Engineer, do hereby declare the nature of this invention to be as follows:-
The improvements relate to the weaving of fabrics known as "dhootas," which have
a coloured or other thread drawn double into the border of the fabric for a certain
distance, in lieu of weft; and have for object the weaving of the same with more
perfect regularity in such borders than has been hitherto the case, by inserting such
coloured or other thread into the shed by mechanical means, instead of depending
entirely upon the weft thread alone drawing in such thread.
To accomplish this and to effect my improvements, I mount upon the slay, slay
sword, hand rail, or other convenient part of the loom, an apparatus, by preference
forming a parallel motion, which carries a guide or finger having a hole or loop
therein, at or near the end thereof for the passage of the coloured or other thread afore-
said, in such form that as the shed is opened, and as the shuttle is about to be propelled
there-through, this guide or finger is both raised, for to enable the shuttle to pass
underneath the thread, and also is carried forward into the shed, carrying therewith the
thread as far as requisite, by which means the shuttle thread can more readily draw
the same up to its position, and thus ensure better results. The finger is again with-
drawn as the shed closes, and the operation is complete for that shoot or pick.
The apparatus is actuated by a suitable cam, or other mechanism, and is duplicated
at each end of the loom, and may be employed either in connection with or apart from
special or ordinary letting off or slackening motions applied to the cop or bobbin
carrying the coloured or other thread of yarn aforesaid.
Variations may be made both in the form of the finger, guide, or needle for inserting
the thread into the shed, and also in the mechanism for actuating the same, or the
action reversed, without departing from the peculiar character of the invention, which
consists in the employment of a guide, finger, or needle, for the insertion of the
coloured or other thread into the shed by any suitable means,, which thread is
eventually drawn into the border by means of and in lieu of the weft, at such border,
in the weaving of fabrics known as "dhootas," or like fabrics.
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester.

page_text: COMPLETE SPECIFICATION.
Improvements in the Weaving of "Dhootas" and in Apparatus
therefor.
I, WILLIAM GADD, of 64 Barton Arcade, Manchester, Civil and Consulting
Engineer, 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 the weaving of fabrics known as "dhootas," which have
a coloured or other thread drawn double into the border of the fabric for a certain
distance, in lieu of weft; and have for object the weaving of the same with more
perfect regularity in such borders than has been hitherto the case, by inserting such
coloured or other thread into the shed by mechanical means, instead of depending
entirely upon the weft thread alone drawing in such thread.
To accomplish this and to effect my improvements, I mount upon the slay, slay
sword, hand rail, or other convenient part of the loom, an apparatus, by preference
forming a parallel motion, which carries a guide or finger having a hole or loop or
fork or slit therein, at or near the end thereof for the passage or carrying of the
coloured or other thread aforesaid, in such form that as the shed is opened, and as the
shuttle is about to be propelled there-through, this guide or finger is both raised for to
enable the shuttle to pass underneath the thread and also is carried forward into the
shed, carrying therewith the thread as far as requisite, which completed operation.
may be performed either during one pick, or caused to be completed in two picks of
the loom, if required, by which means the shuttle thread can more readily draw the
same up to its position, and thus ensure better results. The finger is again withdrawn
as the shed closes, and the operation is complete for that shoot or pick, or pair of picks
as the case may be.
The apparatus is actuated by a suitable cam, or other, mechanism, and is duplicated
at each end of the loom, and may be employed either in connection with or apart from
special or ordinary letting-off or slackening motions applied to the cop or bobbin
carrying the coloured or other thread of yarn aforesaid, or in connection with ordinary
or special forms of reed.
But that the improvements may be better understood I will by the aid of the
accompanying drawings proceed more fully to describe means employed by me.
DESCRIPTION OF DRAWINGS.
Figs. 1, 3, and 5, represent elevations, and Figs. 2, 4, and 6, shew plan views of
apparatus arranged according to my invention.
The same letters indicate corresponding parts wherever they occur.
a, a, is an instrument for inserting the thread into the shed, which in both Figs. 1
and 3, is of curvilinear lever form turning on a pivot or fulcrum b, b.
The object of
the curve is to enable the instrument to enter and return from the shed of threads,
which are shewn in section by a row of dots c, c, without touching or catching the
yarn, but the form of instrument may be extensively varied. In Fig. 5, another

page_text: form is given, in which the same is mounted on two pivoted levers, thus enabling the
instrument to enter and return in parallel lines. In Figs. 1, and 3, the end of the
instrument is formed with a V slit or slot d, to take in the thread, and in Fig. 5,
the end is prepared with a hole, but loops may be employed in great variety.
e, e, is a leg or lever wherewith to actuate the apparatus, and is coupled up to a cam
or other suitable mechanism giving the requisite motion, which is not shewn in
Figs. 5 and 6.
Fig. 3, is so mounted as regards its fulcrum that the thread is only carried in at the
lower part of the shed during one pick, in which case the thread alone, or it may be
the apparatus and thread together, is lifted by means of the heald, harness, or other
motion during the other pick.
In the figures shewn the instruments are mounted as levers on fulcrums; but the
same may be formed of straight or other instruments mounted on or forming sliding
bars or rods. Also they may be mounted on fulcrums at right angles, or at other
angles to those shewn, or reversed entirely with regard to the shed, and may be
attached to the slay, the slay sword, the hand rail, or behind the same, and to any
fixed or moving part of the loom, special or ordinary as may be required, provided the
operation is performed by inserting by mechanical means analogous to those shewn,
the coloured or other thread or threads in lieu of weft at the border or borders of the
fabric.
In cases where a hole or loop is employed at the end of the instrument, the same is
restricted to the insertion of one thread only; but with the V slot or slit, two or more
coloured or other threads may be employed by the use of the dobby, jacquard, or
other heald motions, causing all such threads to be lifted or removed except the one
desired to be carried into the shed.
The instrument when fixed to the slay just behind the ordinary reed may be placed
at such an angle that in going into the shed the end thereof carrying the thread is
passed to the front of the reed through an opening therein for the purpose; but in
some cases it may be fitted in the slay in front of the shuttle altogether.
When the instrument is fixed and moved entirely behind the reed, the latter will
require to be of special construction.
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 :-
The employment of a guide, finger, needle, or other analogous instrument for
the insertion of the coloured or other thread or threads into the shed, by suitable
mechanical means, which thread, or threads, is eventually drawn into or held in the
border by means of and in lieu of the weft, at such border, in the weaving of fabrics
known as "dhootas," or like fabrics, substantially as shewn and described.
WILLIAM GADD.