Improvements in the Manufacture of Curtains and other Goods made ou the Curtain Machine.
Year: 1889

page_text: Date of Application, 2nd Apr., 1889
Complete Specification Left, 26th Aug., 1889-Accepted, 28th Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Curtains and other Goods made
ou the Curtain Machine.
I, EDWIN DOUGHTY Foxhall Road Nottingham in the County of Nottingham
Lace Curtain Manufacturer do hereby declare the nature of this invention to be as
follows:-
Hitherto in making ordinary lace curtains and other similar goods, the main
warp threads have been used in one guide bar, each warp thread twisting round one
carriage only.
My improvements consist in the arrangement and use of several guide bars or
perforated metal bars to carry the main warp threads, to twist them round, and at
the same time to traverse them over an unlimited number of carriages by doing
which I produce an imitation of traversed bobbin net on a machine with a single
tier of carriages universally known as the lace curtain machine on which net the
ornamental part of the fabric is manufactured simultaneously.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Curtains and other Goods made
on the Curtain Machine.
I, EDWIN DOUGHTY Foxhall Road Nottingham in the County of Nottingham
Lace Curtain 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 :-
My improvements in the manufacture of curtains and other goods made on the
curtain machine enables me to produce an imitation of traversed bobbin net, which I
use as a net only, or I utilize it for the foundation of any articles to be made,
on which net, the ornamental part of the fabric is manufactured simultaneously.
The said improvements may be carried out either with, or without the straight
down warp used in the curtain machine, and instead of the threads necessary to
carry out my improvements coming off a warp at all, they may come off independent
spools, and be utilized as though they came off a warp, or to produce a pattern or
patterns.
The said improvements may also be carried out with one or more spool threads to
each carriage for the ornamentation of the net in the usual manner, or the spool
threads may be dispensed with partially or entirely, also instead of all the threads
required to make this net coming off one warp, they may come off several warps.
Let it be understood that when guide bars are mentioned herein that I mean
perforated steel or other metal bars as well.
Hertofore in making ordinary lace curtains and other similar goods the warp
threads have been used in one guide bar, each warp thread twisting round one
carriage only, my improvement consists on the application and use of several guide
bars, to carry the warp threads, to twist them round, and at the same time to traverse
them over a certain number of carriages corresponding to the number of guide bars
I may decide to use.
The number of guide bars in the series required for my improvement cannot be
less than three, but may consist of any greater number.
To describe more particularly my improvement, I will suppose that I use three
guide bars for my warp threads, this being the least possible number to use, and

page_text: thread the warps through the guides, one thread to every third carriage, in each of
the three guide bars, in a manner well known to the trade.
I then operate on the guide bars by means of a jacquard in the ordinary way, or
by means of a set of wheels, and cause each individual warp thread to twist once
round each individual carriage with which it is immediately in contact, I then move
a portion of the warp threads one carriage to the left hand, and the remaining
portion of the warp threads one carriage to the right hand, and repeat the operation
of twisting each individual warp thread once round each individual carriage with
which it is then in contact, and so on until each of the warp threads by a succession
of similar movements has twisted once round cach carriage of the series during its
progress from the left carriage of the series to the right carriage of the series or
vice-versa, but each warp thread. when it comes in contact with the right or left
carriage of the series, I cause to twist twice or thrice round such carriage at will.
When such warp thread has completed its journey from the left to the right or
vice-versa after twisting twice or thrice round the end carriage of the series, it
commences its return journey, performing similar movements, until a complete tour
is effected of all the carriages in the series; this requires eighteen movements of the
machine to complete.
In the drawing accompanying this specification are two sets of wheels, with rises
and falls on each shewing the variation that may be made in the movement of the
warp threads when they are traversing from carriage to carriage, and also their
movements when twisting round the end carriages of the series.
Fig. 1 shews the movements required to twist the warp threads thrice round the
right and left carriages of the series.
Fig. 2 shews the movements required to twist the warp threads twice round the
right and left carriages of the series.
Having now particularly described and ascertained the nature of my said
improvements, and in what manner the same is to be performed, I declare that
what 1 claim is-
The application and use of several guide bars, and the particular movements
imparted to the said guide bars, necessary to traverse the warp threads over and to
twist them round a series of carriages substantially as described and illustrated in
the drawing annexed.
August 9th 1889