Improvements in Braiding Machines.
Year: 1899

page_text: Date of Application, 1st June, 1899-Accepted, 30th Sept., 1899
Improvements in Braiding Machines.
GUSTAV BERGMANN, of 1, Neanderstrasse, Düsseldorf, Germany, Rentier, 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 relates to a braiding machine for making lace and other looped
fabrics and it consists in the arrangement and location of different trackways of
varied sizes which being controled by switches allow the bobbins to run their
way without altering the natural turn of the thread and to keep them in motion
without producing thereby a braiding of the threads.
On the accompanying drawings
Figure 1 is a plan of the machine frame showing the complete bobbin path,
Figures 2, 3, 4 and 5 are modifications of my invention,
Figures 6-12 represent the positions of two bobbins the threads of which are
crossing each other without altering their natural turn,
Figures 13-18 represent the positions of two bobbins the threads of which do
not cross each other,
Figures 19-34 show the movement of four hobbins to produce a braided
pattern,
Figure 35 corresponds to the course of the bobbins Figures 6-12,
Figure 36 corresponds to the course of bobbins Figures 13-18, and
Figure 37 corresponds to the course of the bobbins Figures 19-34,
Figure 38 shows a braided pattern which may be produced with my new track-
way arrangement.
The braiding machine is constructed like other similar machines of two circular
tables in the upper of which is cut the curved path for the bobbin carriers which
are traversed by the trackways that are driven in a known manner by toothed
gearing and controled by switches located in corresponding recesses of the upper
table. The invention lies in a series of groups of track-ways each group con-
sisting of two large central trackways a, b Figure 1. The trackway a connects
with a small circular trackway c directed towards the centre of the machine and a
like trackway d is connected to the trackway b. The large trackway 6 has also
connection with a smaller circular trackway e which is arranged opposite the
trackways c and d. A trackway f connecting with the trackways a¹ and e com-
pletes the group of trackways forming the invention. By placing a series of
groups, such as are above described, side by side in such a manner that the track-
ways of one connect with the trackways of the other, a complete braiding machine
may be constructed. For revolving the trackways toothed wheels h are arranged
gearing with each other and for directing the movement of the bobbins the
switches are inserted in the upper table of the machine which are turned in
a known manner by any suitable pattern mechanism.
The new combination of the trackways allows a different working of the
bobbins. As may be seen from the positions Figures 6-12 two bobbins for

page_text: instance may run on the three trackways b, d, e in such a manner that their
threads cross each other without twisting or untwisting or changing their natural
turn respectively. As well known in the art of this manufacture the threads are
not twisted or untwisted when traversing in a curved path having the form of the
cipher 8 which is formed by two complete adjacent circles or two adjacent track-
ways so that the thread when traversing on one trackway is untwisted and in
running on the adjacent trackway is twisted again remaining thus in its normal
state. The bobbins 1 and 2 Figures 6-12 have their original positions in which
they begin to start on the outer border of the two small trackways d, e opposite
each other and now each bobbin passes its respective small trackway and the
common large central trackway traversing in form of the cipher 8 and being
returned after 6 movements again in its original position occupied in Figure 6.
On their way the threads of the bobbins have crossed each other twice as may be
seen from a glance on Figure 35 whilst the thread is left twisted.
Now it may occur that the pattern of the laced fabric requires such a move-
ment of the bobbins that no crossing or braiding of the threads is effected and the
threads lie loosely in the fabric as will be seen in Figure 38 where the top and
bottom part of the pattern illustrated in said figure is made in such a manner.
In this case one bobbin engages a pair of trackways b, d whilst the other
bobbin leaves the central track way and makes its way on the adjacent pair
of trackways a, c. Figure 8 illustrates the moment in which for instance the
bobbin 2 leaves the central trackway 6 for traversing the trackway a and
Figures 13-18 show the movement of the bobbins 1-2 each on its own pair of
trackways but again in form of the cipher S. In travelling in the described
manner neither crossing nor twisting or untwisting of the threads takes place.
The threads are moved beside each other as will be seen in Figure 36 so that a
fabric is produced similar so that shown in the top and bottom part of Figure 38.
Figures 19 34 illustrate the movements of four bobbins for making a braided
fabric Figure 37. For this purpose the bobbins are travelling a group of frack-
ways of the following combination. Three adjacent large central trackways b,
61 connect each with smaller track ways, d, c, d adjacent to the central track-
ways from the inner side.
a,
Two smaller trackways e, d connect with the trackways, from the outer
side and two so called run out trackways ff' connect with the trackways b, c, a
and b, el respectively.
On the described groups of trackways the bobbins are placed in the original
position as shown in Figure 19 and the following figures which illustrate the
traversing of the bobbins show how a crossing of the several threads is effected
and the pattern Figure 37 obtained when the bobbins after 15 movements have
returned to the original position indicated in Figure 19. A study of the course
of the single bobbins shews that each travels in two complete adjacent circles
which is of importance with respect to the nature of the threads.
When using double the number of bobbins to wit 8 the varied fabric Figure 38
may be produced. Some modifications of my invention are illustrated in
Figures 2-5. In Figure 2 I have shown a construction in which each central
large trackway a, b, al connects at both opposite sides with small trackways c, d,
c, and e, e¹, e respectively and with run out trackways f,f,f which com-
bination allows a great variation in the movement of the bobbins.
In Figure 3 the outer small trackways e, el are dispensed with and instead
thereof the run out trackways f,f', f³, are provided by which arrangement one
may attain approximately the same results as with the arrangement shown in
Figure 1.
In Figure 4 the trackways ff, f, are not provided. Each central trackway
connects with one adjacent small trackway at its inner and outer side.
Figure 5 shows a modification in which the trackways f, f', f and the inner
small trackways c, d, ec², d are dispensed with.
In Figure 4 are shown by dotted lines run out trackways f. f', f which are

page_text: adjacent to the central trackways which turn to the left. In this manner the
complete machine of Figure 1 is obtained only with bobbins travelling in the
contrary direction. The same result may be obtained when joining the track-
ways f to the inner end of the central trackway a, b, a¹, b¹
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) In a braiding machine for making lace and other looped fabric the com-
bination of two large central trackways a, b, a¹, 61 each of them connects with an
adjacent small trackway c, d, e, d¹ at its inner side and one of them being con-
nected at its outer side with a small trackway e, e¹ and a run out trackway f,f¹
having connection to said small trackway and the following large central track-
way for the purpose illustrated and set forth.
2) In a braiding machine for making lace and other looped fabric the com-
bination of a series of trackways consisting of adjacent large central trackways
having at their inner and outer sides small trackways with run out track-
ways ff, f being connected to the outer small trackways and the following
central trackways as illustrated and set forth.
3) In a braiding machine for making lace and other looped fabric the com-
bination of adjacent large central trackways having connection with small track-
ways arranged at their inner sides with run out trackways which are located at
the outer side of two central trackways as illustrated and set forth.
4) In a braiding machine for making lace and other looped fabric the com-
bination of series of adjacent central trackways having connected at its inner
and outer sides small trackways as illustrated and set forth.
5) In a braiding machine for making lace and other looped fabric the com-
bination of adjacent central trackways with small trackways arranged at its outer
sides as illustrated and set forth.
6) In a braiding machine for making lace and other looped fabric the com-
bination of series of adjacent trackways having small trackways at their opposite
sides with run out trackway f, f' connected to the left turning trackways as
illustrated and set forth.
7) In a braiding machine for making lace and other looped fabric the combina-
tion of adjacent central trackways having small trackways joined at their outer
ends with run out trackways arranged to the inner side of the large central
trackways.
1000