A Method of Making Purled Fabrics on Traverse Net Machines.
Year: 1893

page_text: Date of Application, 18th Mar., 1893
Complete Specification Left, 16th Dec., 1893-Accepted; 3rd Mar., 1894
PROVISIONAL SPECIFICATION.
A Method of Making Purled Fabrics on Traverse Net Machines.
ROBERT SCOTT Draughtsman No. 131 Noel Street Nottingham do hereby
declare the nature of this invention to be as follows:-
Traverse net is made with two bars. To make the purl there is an additional
bar placed in front of those that make the traverse net. A hole of traverse net
takes twelve motions of the machine to make it. The first eight of these motions
the purl bar remains stationary-at the ninth motion it moves one gaite to the
right at the tenth motion one gaite to the left there it remains for eleven and
twelve motions.
To make the purl turn over the front point bar takes the twist up four motion
and the back point bar takes the twist up at ten motion.
Dalhin 17th J
Mach 1902
COMPLETE SPECIFICATION.
A Method of Making Purled Fabrics on Traverse Net Machines.
ROBERT SCOTT 131 Noel Street Nottingham Draughtsman do hereby declare
the nature of this invention and in what manuer the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
My invention relates to improvements applicable to twist lace machines used for
the manufacture of traverse net, the object of my invention being the manufacture
of "twisted or "turn over" purls on the surface of the net, such purls being
fastened to the net by some of the threads which form the meshes of the same.
Previous to this my invention a "twisted" or turn over "purl had not been
made on a traverse net machine.
66
According to my invention a "twisted" or "turn over" purl can be made on
traverse net machines by the use of an additional bar for moving the purl threads,
and by moving or working the bars in the following order. The additional bar
hereafter referred to as the purl bar is placed in front of the bars used for making
the net, these latter bars being hereafter referred to as net bars.
There are twelve motions of a traverse net machine for each complete cycle of
motions, and during the first eight motions the purl bar remains stationary. At
the ninth motion of the cycle the purl bar is moved towards the right hand end of
the machine a distance of one gait, and returns to its original position at the tenth
motion of the cycle, the purl bar remaining in this position for the remaining
motions of the cycle.
"
The front point bar is arranged to "take up at the fourth motion of the cycle,
and the back point bar at the tenth motion of the cycle such movements of the
point bars (at the specified motious in the cycle of motious of the machine) being
necessary for "turning" or "twisting" the purl.
It should be understood that the relative motions of the cycle at which the
point bars "take up," and the purl bar is moved remain the same, whether they are
performed earlier or later in the cycle of motions of the machine.
The purl bar may be moved by a jacquard or pattern wheel, and the point bars
have the usual end movement.

page_text: I have illustrated my invention by the accompanying sheet of drawings upon
which I show to an enlarged scale a piece of traverse net lace with a purl as formed
thereon. In this drawing the meshes of the net are shown as formed by the usual
method. The purl thread a passes under the crossings and is carried from a¹ to a
by the purl bar at the ninth motion of the cycle of motions of the machine and
is returned from a to a' at the tenth motion of the cycle of motions of the machine,
the purl thread a being fastened to the meshes of the net at the point c.
The purl
thread between the points a' a' and a² a' is taken up by the back point bar and by
it is brought under the front point bar, which on being withdrawn pulls the thread
between a to a² over the points of the back point bar and turns it to the position
shown in the lower part of the figure, in which position it remains without the use
of holding threads. It will be noticed that the purl thread is held at and also
where it passes under the mesh at b and over the adjacent side, this under and over
being sufficient to hold it, and when turned over forms a loop between c and b.
The tension of the purl thread is regulated to assist the turning over action of the
point bars, and the thicker the purl thread the larger the loop made.
It should be understood that the foregoing description refers to the formation of
a single purl, and that by repeating the process a row or line of purls would be
formed. It will also be seen that if the purl bar be moved after the formation of
a purl from one row of meshes to another that a zigzag line of purls may be
produced and that if there be one or more purl bars which are moved by a jacquard
or pattern wheels, patterns may be produced but in all cases the motion of the purl
bar or purl bars and the point bars during the making of the purl must be as here-
inbefore set forth.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that
what I claim is :-
1. Making on a traverse net machine a "turn over" or "twisted" purl by the
use of an additional bar for moving the purl threads at the ninth and tenth motions,
and by <<
taking up " with the front point bar at the fourth motion, and with the 3
back point bar at the tenth motion, substantially as specified.
2. The making of a "twisted" or "turn over" purl on traverse net machines by
substantially the method herein before specified.
Dated this 15th day of December 1893.
W. H. POTTER,
Newcastle Chambers, Nottingham, Agent for the Applicant.