Fast Double Knot for Retiform Fabrics.
Year: 1891

page_text: Date of Application, 13th Nov., 1891-Accepted, 19th Dec., 1891.
COMI DEL DIVIFICATION.
Fast Double Knot for Retiform Fabrics.
I ROBERT SEMMLER, Senior, of Siegmar, Saxony, Hosiery 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 said invention relates to an improved fast double knot for retiform fabrics
such as netting and lace work.
In order that my said invention may be more clearly understood I will describe
the same with reference to the accompanying drawing.
The so-called knot ordinarily produced in netting by hand or machinery is
illustrated in Fig. 1 from which it will be seen that neither of the two threads
is formed into a real knot such as shown in Fig. 2. Instead of these mere loops
are formed, one of which a of Fig. 1 is an open loop and the other b is a crossed
loop. The former a lies in the latter and only a single end of the loop b
passes through the loop a. If the ends a b bare pulled the loops draw close into
net or weaver's knots, if however only the thread a is pulled straight the loop
is withdrawn from the loop b drawing with it the part 1 of the thread bas
shown in Fig. 3. The loop b may now be slipped backwards and forwards along
the straight thread a and hence the connection between a and b cannot be called
fast.
a
According to my said invention I make use of a double knot for joining two
contiguous threads in the manner shown in Figs. 4-7.
Two threads c d Fig. 4 extending from previously formed knots as m n of
Fig. 12 are first passed round studs 12 and 3 4. The threads which are carried
in shuttles are then crossed and brought from the back to the front through the
loopsy (Fig. 5) so that the thread d passes through and the thread c
through y. The threads are again crossed and passed upwards through the
loopsy each thread passing through the loop formed on itself. If now the
threads are taken off the studs and the threads f g h i are drawn a double knot
as shown in Fig. 7 is the result in which each thread has an actual knot of
the kind shown in Fig. 2. Both knots are reciprocally interlaced with and jam
each other producing a double knot which cannot slip.
The method of producing the knot may be somewhat varied as shown in
Figs. 8-11. When the threads are passed round the studs 12 and 34 as in
Fig. 8 they may be passed outside the loops a y from front to back as shown
in Fig. 9 and after crossing they may be returned through the loops y as in
Fig. 10. By this procedure the double knot illustrated in Fig. 11 is produced
which only differs from the knot shown in Fig. 7 by the thread k being on the
top instead of underneath.
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 double fast knot for retiform fabrics wherein two knots of the kind shown
in Fig. 2 formed in or on the threads which are to be united, reciprocally interlace
and interlock, substantially as herein before described and shown.
2. The method of uniting threads in the production of retiform fabrics, con-
sisting in the formation in or on each thread of knots of the kind shown in Fig. 2,
which during their formation are caused to mutually interlace and interlock, s0

page_text: as to produce a double knot which will not slip when drawn, substantially as
bereinbefore described and shown.
Dated this 12th day of November 1891.
EDWARD TURNER WHITELOW,
70, Deansgate, Manchester, Agent for the Applicant.