Improvements in Twist Lace Fabrics, and in Apparatus for Manufacturing the same.
Year: 1893

page_text: Date of Application, 13th May, 1893
Complete Specification Left, 12th Mar., 1894-Accepted, 12th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in Twist Lace Fabrics, and in Apparatus for
Manufacturing the same.
EDWARD COPE of New Basford Nottingham, Lace Manufacturer, do hereby
declare the nature of this invention to be as follows:-
The object of my improvements is to produce double sided fabrics on twist lace
machines.
To produce the above:-I cause the spools to pass between the warp threads
from front to back of the machine, in addition to the usual longitudinal motions.
The warp threads occupy a central position between back and front combs.
The spool threads move sufficiently from front to. back to stand clear of the warp
threads so as to enable special instruments to give them the required longitudinal
movement at the back and front of the warp threads, thus enabling a double sided
fabric to be produced.
Jacks or interceptors may be employed with the aid of jacquard to produce
various patterns and ornamental effects. If desired the warp threads may be
caused to move from front to back instead of the spools, and a similar result
obtained.
The threads to be moved from back to front are led through eyes at the end of
guides sufficiently thin to pass between the other threade.
These guides may be moved independently of each other or a number of them
may be connected together and moved simultaneously.
The above mentioned instruments for giving the longitudinal movement to the
threads preferably consist of a number of points or pickers.
Such instruments may be used on both sides of the machine or on one side
only. In the latter case the longitudinal motion is given on the other side in the
ordinary manner.
By this method of working the warp threads may be covered on either or both
sides of the fabric or the spool threads may be caused to pass between them and
a great variety of patterns thus produced.
Dated this 13th day of Mar 1893.
EDWARD COPE.
COMPLETE SPECIFICATION.
Improvements in Twist Lace Fabrics, and in Apparatus for
Manufacturing the same.
I, EDWARD COPE, of New Basford, 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:-
The object of this invention is to produce double faced fabrics (that is to say
fabrics having a pattern on both sides) on twist lace machines.
The drawing is a transverse vertical section of a portion of an ordinary twist
lace machine modified in accordance with my invention. The left hand side of the
figure is the front of the machine and the right hand side the back.
a is the work bar, b b the point bars, b' the points, cc the combs in which the
carriages work, d is one of the carriages, e one of the bobbins, f the bobbin thread,
D07

page_text: 99 the catch bars by which the carriages are drawn backwards and forwards
between the warp threads h; j a warp guide bar (there may be one or more) ka
spool thread, a spool thread guide bar (there may be one or more) or each guide
eye may be moved independently of the others, m the jack bar and n one of the
jacks. All these parts are old and the functions and the manner in which they are
moved are well understood and require no description.
For the purpose of this invention I modify the machine in two respects
1. The spool thread guides in addition to their usual longitudinal shogging
motion to and fro in front of the warp threads in a direction at right angles to the
plane of the figure are made capable of being moved backwards that is to say from
left to right of the figure so as to carry the spool threads k between and to the
back of the warp threads h assuming the position shown in dotted lines in the
figure.
2. I provide at the back of the machine instruments for moving the spool
threads k to and fro longitudinally in a direction at right angles to the plane of
the figure. The instruments shown consist of a number of points or pickers o'
on the bar o.
It will be seen that by these means the warp threads may be covered by the
spool threads on the back of the fabric just as in ordinary working they are covered
at the front and thus a double faced fabric is produced.
In place of shogging the spool thread guides at the front of the machine they
may simply be moved from back to front or vice versa by jacquard or otherwise, in
this case pickers o' are provided at the front of the machine as well as at the back
for giving the longitudinal movement to the spool threads.
It will be obvious that a like result may be obtained by moving the warp
threads from front to back instead of the spool threads. It will also be obvious
that the spool threads (or warp threads as the case may be) may either be all moved
from front to back simultaneously or they may be moved independently of each
other.
In cases where there are two sets of warp threads the spool threads may be
carried behind one set only and be then shogged longitudinally so as to cause them
to lie between the two sets.
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 :-
1. Twist lace fabrics in which the warp threads or some of them are covered
both at the front and at the back by the spool threads.
2. The combination with a twist lace machine of means for carrying the spool
threads from front to back between the warp threads and means for shogging them
longitudinally whilst at the back.
3. The combination with a twist lace machine of means. for carrying the warp
threads from front to back between the spool threads and means for shogging them
longitudinally whilst at the back.
Dated this 8th day of March 1894.
EDWARD COPE.