IMPROVEMENTS IN THE MANU- FACTURE OF EDGINGS IN TWIST LACE MACHINES
Year: 1876

page_text: LETTERS PATENT to Robert Scott, of 8, Cromwell Street, in the Town and
County of Nottingham, for the Invention of "IMPROVEMENTS IN THE MANU-
FACTURE OF EDGINGS IN TWIST LACE MACHINES."
Sealed the 27th February 1877, and dated the 23rd September 1876.
PROVISIONAL SPECIFICATION left by the said Robert Scott at the Office of
the Commissioners of Patents on the 23rd September 1876.
ROBERT SCOTT, of 8, Cromwell Street, in the Town and County of Nottingham
"IMPROVEMENTS IN THE MANUFACTURE OF EDGINGS IN TWIST LACE MACHINES."
This Invention has for its object improvements in the manufacture of edgings in
twist lace machines.
At the present time edgings imitating more or less closely hand or needlework on
a ground of muslin are largely produced in twist lace machines. It is the object of
my Invention to give to productions of this nature the appearance of having tucks
upon the surface of the plain muslin. The muslin is produced as heretofore in
narrow bands, each consisting of a set warp threads wefted by a bobbin thread;
there may be seven, nine, or other number of warp threads in each set. These
bands are connected together by warp threads which are in front of or behind the
other warp threads above mentioned, which link with the wefting bobbins of two
adjacent bands. Now wherever I wish to produce the appearance of a tuck I
employ additional warp threads carried by other warp bars, and I arrange and work
these additional threads so as to make one of the bands of the muslin at this part
wider than the other bands, and assuming the connecting threads already mentioned
to be in front of the warp threads of the original muslin bands I place the additional
warp threads which I add for the purpose of widening certain of the bands to form
tucks in front again of the connecting threads, from which it results that the fabric
produced by these additional threads is left free on its outer edge, and so stands up
as a tuck above the face of the continuous muslin resulting from the joining
together of the several bands by the connecting threads. The way in which the
imitation tucks lie in respect to the head of the edging depends on the way in
which the connecting threads are worked; for example, supposing that the bands
and portions of bands forming the continuous muslin fabric to be produced at four
motions of the machine (as I prefer to be the case), then if the tuck threads are
SD C31

page_text: made to start to twist on the first and second motions the tucks will lie one way,
and if they start to twist on the third and fourth motions the imitation tucks
will lie the other way.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Robert Scott in the Great Seal Patent Office on the 23rd March
1877.
ROBERT SCOTT, of 8, Cromwell Street, in the Town and County of Nottingham,
"IMPROVEMENTS IN THE MANUFACTURE OF EDGINGS IN TWIST LACE MACHINES."
This Invention has for its object improvements in the manufacture of edgings in
twist lace machines.
At the present time edgings imitating more or less closely hand or needlework on
a ground of muslin are largely produced in twist lace machines. It is the object of
my Invention to give to productions of this nature the appearance of having tucks
upon the surface of the plain muslin. The muslin is produced as heretofore in
narrow bands, each consisting of a set of warp threads wefted by a bobbin thread;
there may be seven, nine, or other number of warp threads in each set. These
bands are connected together by warp threads which are in front of or behind the
other warp threads above mentioned, which link with the wefting bobbins of two
adjacent bands. Now wherever I wish to produce the appearance of a tuck I
employ additional warp threads carried by other warp bars, and I arrange and work
these additional threads so as to make one of the bands of the muslin at this part
wider than the other bands, and assuming the connecting threads already mentioned
to be in front of the warp threads of the original muslin bands I place the additional
warp threads which I add for the purpose of widening certain of the bands to form
tucks in front again of the connecting threads, from which it results that the fabric
produced by these additional threads is left free on its outer edge, and so stands up
as a tuck above the face of the continuous muslin resulting from the joining together
of the several bands by the connecting threads.
In order that my said Invention may be most fully understood and readily carried
into effect, I will proceed to describe the Drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 represents in a diagramatic way the method in which I produce imitation
tucks in connection with a muslin ground. The blue lines numbered 1 to 7
inclusive represent the warp threads of a niuslin band. The yellow line A repre-
sents the bobbin thread which serves as the weft of the muslin band. The black
lines numbered 8 and 10 represent the warp threads which serve as connecting
threads to connect the band produced by the warp threads 1 to 7, and the bobbin
thread A to other similar bands on either side of it. The blue lines numbered 4*,
5*, 6, and 7* represent warp threads in these adjacent bands corresponding to
those marked 4, 5, 6, and 7 respectively. The yellow lines marked A*, A*, repre-
sent the wefting bobbin threads of the adjacent bands. The red threads numbered
from 11 to 16 inclusive represent the additional warp threads which I add to the
band, in connection with which I desire to form an imitation tuck. The warp
threads are numbered in the order in which they stand in the machine, commencing
at the back and numbering from back to front.
I will proceed to trace the production of the work.
Figure 2 is a table of the motions. Commencing with the carriages in the front
as they pass to the back, that which carries the bobbin thread A in Figure 1 has all
the warp threads with which it works on its right hand, excepting those marked with
an 0 on the first motion in the table, Figure 2, that is to say, excepting the warp
threads numbered 15, 13, 11, 7, and 3. At the next motion whilst the bobbin

page_text: passes from back to front, all the warp threads with which it works stand to the
At the third
right of it excepting numbers 1, 3, 4, 5, 7, 8, 10, 11, 13, and 14.
motion whilst the bobbin passes from front to back all the warp threads with which
it works stand to the right of it, excepting numbers 14, 13, 11, 10, 7, 6, 5, 3, 2,
and 1. At the fourth motion whilst the bobbin passes from back to front, all the warp
threads with which it works stand to the right of it, excepting only numbers 1, 5, 10,
11, 13, and 14. At the fifth motion whilst the bobbin passes from front to back, •
all the warp threads with which it works stand to the right of it, excepting numbers
14, 13, 11, 7, 5, 3, and 1. At the sixth motion whilst the bobbin passes from back
to front, all the warp threads with which it works stand to the right of it, excepting
numbers 1, 3, 5, 7, 10, 12, 14, and 16. The seventh motion is similar to the first
and so on.
As is shown by the table, Figure 2, the connecting threads move over
two gates to catch the bobbins of two adjacent breadths.
I would remark that it will be obvious to a lace maker that the order and the
number of threads in the muslin band and also of additional threads employed to
produce the imitation tuck may be varied without departing from my Invention,
but what I claim is, the production of imitation tucks on the face of muslin made
on a twist lace machine by the use of additional warp threads in combination with
the warp threads, connecting threads, and bobbin threads of which the breadth of
muslin fabric is composed, such additional warp threads weaving with the bobbin
threads, and being arranged in the machine either in front of or behind the other
warp threads of the muslin fabric.
In witness whereof, I, the said Robert Scott, have hereunto set my hand and
seal, this Fourteenth day of March, in the year of our Lord One thousand
eight hundred and seventy-seven.
ROBERT SCOTT. (LS)