Improvements in the Manufacture of Lace on Twist Lace Machines.
Year: 1896

page_text: Date of Application, 13th Oct., 1896
Complete Specification Left, 30th Oct., 1896-Accepted, 9th Jan., 1897
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 new foundation
nets on which patterns may be produced by the ordinary Jacquard apparatus in the
usual manner.
The said improvements consist of moving the guide bars in a particular
manner.
In these improvements which are most applicable to a lace curtain machine I use
an extra warp, threaded in two extra guide bars, as is frequently done in lace curtain
machines.
The threads from the extra warp are threaded alternately in the two extra guide
bars i.e. one half of the threads are threaded in one of the extra guide bars and
the remaining half of the threads in the other extra guide bar.
The movements of the guide bars are invariably in opposite directions i.e. when
one moves to the right hand the other moves to the left hand.
The extra warp threads do not twist round the bobbin threads, but are held in
their proper position by the main warp, the spool threads, and the bobbin threads
twisting round each other.
The movements of the extra guide bars may recur in four, six, or eight
motions of the carriages from the back to the front of the machine, or vice-versa,
as will be well understood by any one conversant with the manufacture of twist
lace.
Dated the 10th day of Databas 1906
EDWIN DOUGHTY.
Improvements in the Manufacture of Lace on Twist Lace Machines.
1 EDWIN DOUGHTY Lace Manufacturer 9 Clipstone Avenue Nottingham 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:
My invention which is most applicable to a lace curtain machine consists of
moving two extra guide bars or perforated metal bars in a particular manner.
Each of these guide bars carries one half of the threads from an extra warp
being threaded alternately, as is frequently done in lace curtain machines, and
form one complete row of threads ie. one thread for each carriage in the
machine.
By causing these two guide bars (which I will refer to as bar 1 and bar 2 in my
explanations) to move in the following particular manner I obtain three new

page_text: foundation nets of an analagous character, onkwhich patterns may be produced by
the ordinary Jacquard apparatus.
The first net is produced by moving bar 1 two gates to the right, bar 2 two gates
to the left when the carriages are in the front combs the carriages then move into
the back combs both guide bars remaining stationary during this movement. The
carriages now move into the front combs, and bar 1 moves two gates to the left
bar 2 two gates to the right. The carriages now move again into the back combs,
both guide bars remaining stationary, then the carriages return into the front combs.
These four movements are recurrent.
The second net is very similar, but requires six movements as follows. The
carriages being in the front combs, bar 1 moves one gate to the right, bar 2 moves
one gate to the left, the carriages move into the back combs, bar i moves one gate
to the right, bar 2 moves one gate to the left and remain stationary two movements
of the carriages viz. into the front combs then into the back combs. Bar 1 now
moves one gate to the left, bar 2 moves one gate to the right. The carriages
move into the front combs, bar 1 moves one gate to the left, bar 2 one gate to
the right and remain. stationary during two movements of the carriages vis. into
the back combs, then again into the front combs. These six movements are
recurrent.
The third pet is also very similar-starting with the carriages in the front combs
bar 1 moves one gate to the right, bar 2 moves one gate to the left, remaining
stationary while the carriages make two movements viz. one into the back combs,
and one into the front combs, bar 1 then moves one gate to the right, bar 2 moves
one gate to the left, again remaining stationary while the carriages make: one
movement into the back combs, and one into the front combs. Bar 1 now moves
one gate to the left, bar 2 one gate to the right again remaining stationary while the
carriages make one movement into the back combs, and one into the front combs,
.. bar 1 now moves one gate to the left, bar 2 one gate to the right, again. remaining
stationary while the carriages move into the back combs, and return into the front
combs. These eight movements are recurrent.
The movements of the guide bars may be made either by wheels or
jacquard.
By.the diagrams and description of the movements of the two guide bars, it
will be seen that the extra warp threads do not twist round the bobbin threads,
being held in their proper position by the bobbin threads, the warp threads, and
the spool.threads. twisting round each other, as will be well understood by any one
conversant with the manufacture of twist lace.
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 two guide. bars which
invariably move in opposite directions."
Dated this 30th October 1896.
EDWIN, DOUGHTY: