Improvements in the Manufacture of Lace on Twist Lace Machines.
Year: 1897

page_text: Date of Application, 25th May, 1897
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Lace on Twist Lace Machines.
I, EDWIN DOUGHTY, 9, Clipstone Avenue, Nottingham, Lace Manufacturer, do
hereby declare the nature of this invention to be as follows:-
:-
The object of this invention is to produce on a twist lace machine, a strong
foundation net, by particular movements of the guide bar or bars, on which patterns
may be made by the ordinary jacquard apparatus in the usual manner.
In this invention I cause an extra warp threaded in one or more guide bars to
traverse over a series of three or more carriages (preferably over five) each of them
holding a bobbin containing a thread as is usual in twist lace machines.
I produce the same result by two different but similar methods.
Firstly When the extra warp threads are traversed from left to right, I twist
them only once round the first carriage of the series, but twice round the second,
third, and fourth carriages, then only once round the fifth or last carriage of the
series. Then when the warp threads are traversed from right to left, I move
them when the carriages are in the front combs i.e. the front motion and do not
twist them at all as the traversing warp threads are held in their proper position,
by the twisting of the ordinary warp threads and the bobbin threads round each
other.
Secondly. When the extra warp threads are traversed from left to right, I twist
them only once round the first carriage of the series, I then move them only in the
front motion of the carriages, and do not twist them round the second, third, and
fourth carriages, but when they arrive at the fifth or last carriage of the series I
twist the extra warp thread once round it. Then I traverse them on their return
from right to left by movements exactly in the same manner as described in the
first method. The appearance of the net being the same whichever method is
used.
The foregoing explanations will be well understood by any one conversant with
the manufacture of twist lace.
1000
improvements in the manufacture of Lace on a wist Lace Machines.
I, EDWIN DOUGHTY, 9, Clipstone Avenue, Nottingham, Lace 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:.
In this invention I cause an extra warp, threaded in one or more guide bars
(or perforated metal bars) to traverse over three or more carriages (preferably

page_text: over tive) each of them holding a bobbin containing a thread as is usual in twist
lace machines, and to twist the said extra warp threads round the carriages, or
weave them betwixt the bobbin threads and the ordinary warp threads by means
of certain movements of the said guide bar or bars in the manner herein fully
described and shewn by the drawings and diagrams accompanying this
specification.
I produce the same result by two different but similar methods as will be seen by
referring to the drawings.
Fig.
shews a wheel with thirty two motions on it necessary to carry out the
first method.
Dia. 1 The thick line shows the movements of one of the extra warp threads
round, or betwixt the bobbin threads and the ordinary warp threads.
Fig. 2 shews a wheel also with thirty two motions on it, necessary to carry out
the second method.
Dia. 2 The thick line shews the movements of one of the extra warp threads
in the same manner.
In the first method it will be seen by referring to Dia. 1 that when the extra
warp threads are traversed from left to right, they are twisted only once round
the first carriage of the series, but twice round the second third and fourth
carriages, then only once round the fifth or last carriage of the series. Then
when the warp threads are traversed from right to left, they move only when the
carriages are in the front combs i.e. in the front motion, and do not twist at all,
as the traversing warp threads are held in, or woven in their proper position by the
twisting of the ordinary warp threads and the bobbin threads round each other.
In the second method by referring to Dia. 2 it will be seen, that when the extra
warp threads are traversed from left to right, I twist them only once round the
first carriage of the series, they then move only in the front motion of the
carriages, and do not twist round the second, third, and fourth carriages
of the series, but when they arrive at the fifth or last carriage of
the series, the extra warp thread twists once round it. When the
extra warp threads return from right to left their movements are identical with
those in the first method. The appearance of the net is the same whichever
method is used.
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:-
"The particular movements heretofore described of a guide bar or bars travers-
ing extra warp threads from left to right, at the same time twisting them round,
or weaving them betwixt a series of carriages and ordinary warp threads, then
retraversing them from right to left and weaving them betwixt the same series of
carriages and ordinary warp threads."
101.
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1000