Improvements in the Manufacture of Knitted Traverse Warp Fabrics.
Year: 1893

page_text: Date of Application, 4th Jan., 1893
Complete Specification Left, 3rd Oct., 1893—Accepted, 4th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Knitted Traverse
Warp Fabrics.
I, JOHN UPSDALE, .of 4 Falcon Avenue, Falcon Street, in the City, of London,
Manufacturer, do hereby declare the nature of, this invention to be as follows:-
According to this invention a traverse warp fabric is formed thickened by
thickening threads of cotton, or, other material traversed, to and fro and laid into
the work without being looped, with the loops of, the warp, fabric. This is accom-
plished, by binding them into the fabric, between, the portions of the threads which
form the back of the loops and the portions of the threads. which form the front of
the loops. In this way the cotton or, other threads are hidden in the taffeta or
other warp fabric.
Preferably. I use as many thickening threads as there are needles with a separate
eye or guide for each needle-these are attached to a bar,, or, bars, which can be
shogged to and fro. If two bars are used, each., bar, has, alternate guides secured to
it and when one bar is shogged in one direction the other is shogged in the opposite
direction. The thickening threads, are., traversed, or, crossed over the front ends of
the needles just, as the sinkers rise,, to, knock over, the work and so that when the
sinkers descend the crossings of the, threads are caught in the throats of the sinkers.
Afterwards when, the sinkers go, back, to carry back the work, along the stems of
the needles.the.crossings of the thickening threads, are carried back with the work
below the needles. The threads for forming the taffeta or warp, fabric are then
traversed and,crossed over, the tops., of, the needles in front of the sinkers in the
ordinary manner, and so the work goes on. Preferably I, cause the thickening
threads to, be traversed a distance of two needles at each traversing movement.
-Dated this 3rd day of January 1893.
JOHN UPSDALE.
5
1
1.
COMPLETE SPECIFICATION.
.
Improvements in the Manufacture of Knitted Traverse
Warp Fabrics.
I, JOHN, UPSDALE, of 4 Falcon Avenue, Falcon Street, in the City of London,
Manufacturer, do, hereby, declare the nature of this invention and in what manner
O the same, is, to be performed to be particularly described and ascertained in and
by the following statement :-
"1
According to this, invention a traverse warp fabric is formed thickened by
thickening threads of cotton, or other material, traversed to and fro, and laid into
the work without being looped with the loops of the warp,fabric. This is accom-
5plished by binding them into the fabric, between the portions of the threads which
..form the back of the loops and the portions of the threads which form the front, of
the loops. In this way. the cotton or other threads, are, hidden, in the taffeta or
- traverse warp fabric.
12
Preferably. I use as many, thickening threads as there are needles, with a separate
10eye or guide for each needle these, are attached,,to, a bar or bars, which can be
shogged to and fro. If two bars are used each bar has alternate guides, secured to
it and when one bar is shogged in one direction, the other is shogged in the opposite
direction. The thickening threads are traversed or crossed over the front ends of
the needles just as the sinkers rise,to,, knock over, the work and so that when the
45 sinkers descend the crossings of the threads are caught in the throats of the sinkers.

page_text: Afterwards when the sinkers go back to carry back the work along the stems of
the needles the crossings of the thickening threads are carried back with the work
below the needles. The threads for formning the taffeta or traverse warp fabric are
then traversed and crossed over the tops of the needles in front of the sinkers in
the ordinary manner and so the work goes on.
In the drawings annexed two examples of traverse warp fabrics thickened in the
manner above described are shewn in the diagrams A and B.
For producing the fabric shewn by .the diagram A all the thread eyes or guides
through which the thickening threads are led are secured to one bar.
For producing the fabric shewn by the diagram B two bars are used and each
bar has alternate guides secured to it.
Figures 1, 2, 3 and 4 shew successive positions into which the sinkers and thread
guides have to be moved to produce the fabric shewn in diagram A.
'
Figure 5 is an elevation shewing the way in which I provide for carrying and
giving movement to the thread guides and sinkers.
Figure 6 is a front view of some of the thread guides and parts of the bars by
which they are carried and moved.
Figure 7 is an elevation shewing separately the parts by which the sinkers are
raised and lowered and.
Figure 8 is an elevation shewing separately the parts by which the sinkers are
moved to and fro.
The machine used is for the most part constructed as described in the Specifica-
tion of a Patent No. 13635 in the year 1851 granted to William Hemsley but in
place of the sinkers being held both at their top and bottom ends as described in
that Specification they are held at their lower ends only as shewn so as to permit
of the thread guides for the thickening threads being placed above the needles.
A is the needle bar, B₁ the bar by which the sinkers B are carried and C¹ the
bar by which the thread guides C for the thickening threads are carried.
D and E are the two sets of threads by which traverse warp fabric is produced.
The sinker bar B' is supported by arms B2 which extend upwards from it being
jointed to the end of horizontal arms F which extend from a rocking bar F-the
bar receives its rocking motion by arms F2 which extend backwards from it being
neld against cams F³ on the revolving cam shaft Z of the machine. In this way
the sinkers receive their up and down movements. To move them backwards and
forwards the sinker bar B is by links 'G' connected to lever arms G which are held
up to cams G2 on the cam shaft.
The thread guide bar C¹ has upon it at the top, projections C' which can be
slidden to and fro endwise through guides at the end of arms H to allow of the
guide bar being shogged endwise to and fro. The arms H' project downwards
from a rocking bar H. This rocking bar is
extend horizontally from a rocking bar I.
extending back from them and made to rest
these they receive their rocking movements.
thread guides backwards and forwards and
upwards and downwards.
1.
carried at the end of arms I' which
The bars H, I have arms H², I²
upon cams on the cam shaft and from
The rocking of the bar H moves the
the rocking of the bar I moves them
The thread guide bar C¹ is at the proper times shogged endwise a distance equal
to twice the distance between the needles. When the bar is at rest the thread
guides are above the needles and out of the way of the sinkers. When the bar is
shogged in one direction say to the left each thread guide is thereby moved across
the front of one needle from one side of it to the other and it brings the thread
which it carries into position to be caught by the sinker which is on the left hand
side of the needle.
The action is as follows: When the sinkers are in their backward position as
shewn in Figure 5 the threads D and E by which the traverse warp fabric is formed
are crossed over the stems of the needles in front of the sinker nebs in the ordinary
way.
The sinkers are then moved forwards and when the crossings of the threads have

page_text: by this forward movement been brought below the beards of the needles the beards
of the needles are closed by the presser coming down upon them and the sinkers
continue to move forwards and also rise and carry the old loops of work beyond the
points of the beards-the presser then rises up out of the way and the sinkers
continue their upward and forward movement until they come into the position
shewn in Figure 2 and have pressed the old loops off from the ends of the needles.
During this upward movement of the sinkers the thread guide bar C₁ is shogged
endwise a distance equal to twice the distance between the needles. The sinkers
now descend from the position shewn in Figure 2 to the position shewn in Figure 3.
As they do so the neb of each sinker comes in front of one of the thickening
threads C and carries this thread down just in front and somewhat below the level
of the front end of one of the needles-the sinkers now are moved back to the
position shewn in Figure 5 carrying the work along with them and also the
threads C each of which is now lying across the under side of one needle-between
this needle and the threads D and E. The same series of movements again takes
place the threads C being this time shogged in the opposite direction and so the
work goes on just as quickly as though ordinary unthickened traverse warp fabric
were being made.
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. A knitted traverse warp fabric in which the threads forming the body or
groundwork of the fabric are traversed to and fro across the whole width of the
fabric and in which thickening threads are traversed a short distance to and fro
and laid and held between the front and the back of the loops forming the
groundwork of the fabric substantially as described.
2. A traverse warp knitting machine with thread guides for laying thickening
threads into the work between the front and back of the loops substantially in the
manner herein before described.
Dated this 31st day of August 1893.
JOHN UPSDALE.