комедию Apparatus therefor.
Year: 1897

page_text: Sweden),
Date of Application (in United Kingdom), 12th Feb., 1897
Complete Specification Left, 12th Feb., 1897-Accepted, 17th Apr., 1897
COMPLETE SPECIFICATION.
комедию
Apparatus therefor.
I ROBERT WILHELM STREHLENERT of Swedenborgsgatan, No. 2, Stockholm,
in the Kingdom of Sweden, Civil Engineer, 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 :-
This invention relates to improvements in the production of artificial silk
threads.
The methods hitherto used for making artificial silk threads have the inconvenience,
that the thread formed from the pressed-out or drawn-out mass has been liable to
be broken between the mouth-piece of the apparatus and the bobbin on which it is
wound up. This frequently occurring, breakage has made it impossible to keep
the apparatus running continuously, and on account of the difficulty in getting
hold of the broken thread and placing it on its bobbin, much time is lost, and the
product is consequently rendered more expensive. By the method described below,
the threads are twisted before they are wound up, and, what is most important, a
broken strand will be caught by an adjacent strand which is being drawn or pressed
out, thus making it possible to keep the apparatus working continuously. The
method will be described below in connection with the description of the apparatus
employed in the manufacture of the thread.
n
Figs. 1 and 2 are vertical sections of the apparatus. The arrangement shewn in
Fig. 1 is intended for interrupted running, and the arrangement shewn in Fig. 2 is
intended for uninterrupted running.
In both cases, the apparatus has a set of mouthpieces A, furnished with one or
more holes, through which a solution is pressed from which the artificial silk is to
be made. These mouth-pieces, which may be disposed each by itself or in groups,
are connected with hollow cylinders B, which are fastened in cog wheels C, and
pass through holes in a common cogwheel D, which is journalled in the frame F of
the apparatus, and rotated by means of a suitable pinion or worm E. The cog-
wheels may be supported by ball bearings, as shown on the drawings. The
cylinders B may be arranged in a circle in the cogwheel D, or a rotatable disc or
ring used in its stead, and every cylinder may, at its lower end, be supplied with
one or more mouth-pieces A. The cog wheels C, fixed to the cylinders, mesh with.
a common cogged ring G, fixed to the frame of the apparatus, so that the
cylinders B, when the cog-wheel D rotates, will be given a circular motion and a
rotating motion within the circular path. Into the hollow cylinders B, Fig. 1,.
descend the pressing pistons or plungers H, which, after the prepared solution has

page_text: been filled into the cylinders, are pressed down into the cylinders by means of a
hydraulic piston I and a common disc J, for the purpose of pressing out the
solution through the mouth-pieces A. The pressing may be regulated by
observing a manometer K, which shews the degrees of pressure in the hydraulic
pipe. The apparatus shown in Figure 2, which is intended for continuous running,
has a reservoir, not shewn on the drawing, for the prepared fluid, from which
reservoir the fluid, under pressure, is led to the mouthpieces A through pipes or
canals. For conveying the fluid from the stationary pipe to the rotating and
circling mouth-pieces, there is a rotatable claw-shaped pipe L, the ends of which
may be tightened by suitable stuffing boxes.
The mouthpieces, which should preferably circle in a horizontal plane, may
descend into a fluid contained in a funnel or conical vessel M mounted below them.
From the narrow part of the funnel, a pipe N leads to that vessel in which the
bobbins are placed upon which the thread is to be wound up. In the angle between
the funnel M and the pipe N, is journalled a grooved roller O, over which the
thread passes. Yet, the thread may simply pass over this angle without any
roller. The funnel is charged with a fluid, preferably water, for the washing of
the threads simultaneously with the twisting of the same, and this supply of water
is furnished by turning to one side the pipe end laid over the edge of the funnel
(pipe end not shown in drawings), so that the fluid in the funnel will rotate in the
same direction as the cylinders, at the same time running out in the same direction
in which the thread passes through the pipe N. The lower ends of the mouth-
pieces descend into the water, so that the thread is pressed out under the surface
of the water, and the threads pressed out converge to the grooved roller O, and
pass over it to the bobbin. The thread passing over the grooved roller is, by the
circling motion of the cylinders, twisted togetlier of as many strands as there are
mouth-pieces, the strands from every group of mouth-pieces on the ends of the
cylinders having already been twisted together. If, while spinning is going on,
one or more strands from a group of mouth-pieces of a cylinder break off, the lower
end of the strand is drawn into the twisted thread, and the free upper end issuing
from the mouth piece is caught by the adjacent strand, sticks fast to it, and
accompanies it to the grooved roller, so that the fault is automatically repaired.
This catching of a free strand end by a following stretched thread or strand is
made possible, partly by the circling of the cylinders and their simultaneous
rotation, and partly by the strands or threads passing through a rotating fluid
which retards their throwing out in radial directions. As soon as the broken
strand issuing from the mouth-piece has come out far enough to form an angle to
its former direction, it is immediately caught up by the adjacent strand. The
presence of the water is not necessary, for the strands will be caught up in the
same way without water. Neither is it necessary that the convergence of the
strands to one point should take place under the plane in which the mouth-pieces
circle, for this convergence can also take place in front of said plane.
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. The method of producing threads of artificial silk, consisting in pressing or
drawing out a prepared solution through mouth-pieces which receive a motion in a
continuous path (the groups of which mouth-pieces may, during their motion in
said path, rotate around a common axis), and in collecting the strands or threads
pressed out to a common point under or in front of the mouth pieces, from
which point the twisted thread is wound up, partly for the purpose of twisting
the strands or threads, and partly for the purpose of an adjacent strand catching
a broken strand on account of the circular motion of the threads.
2. In the method set forth in Claim No. 1, the pressing of the strands out of
the mouth-pieces below the surface of a fluid which is given a rotating motion in
the same direction as the mouth-pieces in their circular path, and also flows in the

page_text: same direction as that in which the threads pass, in order that the fluid, on
account of its rotation, may retard the throwing out of a broken thread or
strand in a radial direction, and thereby facilitate its being caught by an adjacent
thread or strand.
3. For carrying out the methods set forth in Claims 1 and 2, an apparatus
consisting of a set of mouth-pieces or groups of mouth-pieces A arranged in a
circle, which are connected with press cylinders B, or with canals from a common
reservoir containing the prepared solution, which mouth-pieces, cylinders with
mouthpieces, or holders of the mouth-pieces, or groups thereof, are rotatably
mounted in a rotating disc or ring D.
4 In the apparatus mentioned in Claim No. 3, the arrangement of a preferably
funnel-shaped vessel M containing fluid, and mounted under or in front of the
mouth-pieces, which vessel, in its narrow mouth, has a knee or roller to collect the
threads, which continue in a pipe N to the bobbin-holder, said vessel having, at or
near its top, a pipe for supplying fluid, the mouth of said pipe being directed in
the same direction as the motion of the mouth-pieces in their path, for the purpose
of causing the fluid to rotate.
1
TA 2
1007
NEWTON & SON,
Agents for the Applicant.