Machine for Cutting the Back Loops of Lined Circular Looped Fabrics.
Year: 1894

page_text: Date of Application, 1st Aug., 1394-Accepted, 6th Oct., 1894
COMPLETE SPECIFICATION.
Machine for Cutting the Back Loops of Lined Circular Looped
Fabrics.
I FRITZ WEVER of Chemnitz, Saxony, Germany, Machinist, 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 :-
In the following description reference is made to the accompanying sheet of
drawings, in all the figures of which the same letters refer to the same parts.
In round circular knitting frames lining threads are worked into the plain goods
in such a way as to put these threads over and under one or more needles of the
frame. In Fig. 13 this lining fabric A is shown having the lining thread B put
alternately over one needle and under three needles on the back of the fabric. By
cutting these back threads a plush like face is given to the article.
The said machine has either shears as in Figs. S and 9 for cutting or instruments
as shown in Figs. 10 and 11 for crushing the lining threads by pressure. It is also
provided with means (gh, ik Figs. 1 and 2) for accurately guiding the work and a
take up and hatching motion (!pp p²) for drawing the fabric through the
machine and rolling it on a suitable roller. Each pair of scissors or shears consists
of a straight blade a Figs. 11 and 12 and a rotating or oscillating circular cutter b.
A plate a is soldered to the blade a and the breadth of a' is equal to the length of
the straight lining thread. The plate a' lies tight against the fabric A to catch
the lining loops B which it delivers to the scissors a and . The catch plate a¹
prevents the point of the scissor blade a from piercing the fabric.
Instead of cutting the threads B they may be crushed by pressure between the
hard wedge shaped plate a³ (Figs. 10 and 11) (having a catch plate u¹) and the
moveable plate a² which is pressed against a³ with a rocking motion.
All the scissor blades a or presser plates a³ (Figs.
and 10) are held in an
annular shell c (Figs. 4 and 10) in which they are mounted to correspond to the
pitch of the lining loops B B (Figs. 5 and 13) and are retained round the shell by
a band or spring a (Fig. 4). The circular fabric A is drawn up inside of the
shell c and it fits the circumference of the cylinder or disc d which is secured to the
tube . The shell c is held by the framing which also carries the bearings of
the driving shaft e. There are as many scissor blades a arranged upon the shell c
and round the fabric A as there are lining loops B in the circumference of the
fabric. The diameter of the cylinder is equal to the inner diameter of the
tubular fabric A. Each circular cutter is carried by its corresponding straight
blade a and its movement may be either a rotating or an oscillating one.
Figs. 4 and 5 each cutter & has a worm wheel driven by a worm the shaft of
which carries a spur wheel ³. All the wheels which are placed alternately
higher or lower for the sake of space in narrow gauged shears, are driven by a
toothed ring. The latter is actuated by the wheel of the driving shaft e and
sliding or rotating on rollers is kept concentric by the rollers f³. By this means
each circular cutter b receives a rotating motion for cutting the loops.
In
In Fig. 6 the wheel of the circular cutter gears into the toothed sector ²
which oscillates about the bolt and engages by its outer end with a ring a.
This ring is moved up and down by r¹ and the cams y of the two driving shafts.
By this means an oscillation motion is communicated to each circular cutter b for
cutting the loops B drawn between a and b. In the modification shown in Figs. 10
and 11 the swinging movement of the presser plates is obtained by the ring.³
which receives an up and down motion like æ in Fig. 6.
In this case the loops B
are crushed by pressure between a³ and 6º.

page_text: An important feature of the machine is the mode of feeding and guiding the
tubular goods and drawing them against the cutting instruments so as to ensure the
latter catching and cutting the back lining loops. A light cylinder D Figs. 1 and 2
of sheet metal turning lightly on the roller D2 about the tubular axis d' carries the
whole tubular fabric in the first instance. For entering the fabric into the machine
the coupling 3 is disconnected and the tube d² with its rings ki and d is taken off.
Then a reelt Fig. 2 is brought into the position shown by the dotted lines and one
end of the long tubular work is put on the reel and drawn down inside of the
machine through the shell c spread over the disch (provided with rollers h¹) and
drawn inside the rig g to the bottom plate D' of the cylinder D. The other end
of the tubular fabric is held above the disc hand fastened to the pins of a ring w
Fig. 7 in such a manner that each part A' A' Fig. 13 in which the lining thread
lies on a loop of the fabric is put on a pin of w. This fastening of the fabric to
the ring we may also be done before bringing it into the machine. The ring w is
next drawn up by hand and then the tube without the parts i and is placed
on d' and secured by the coupling d³. The fabric following the ring w is carefully
arranged so that each catch plate a' catches its lining loop B and the rollers guide
the work in a straight perpendicular line. The ring wis then taken off and the
guide rings ki are put on the tube d² and while the work is being drawn up the
shafte is turned and the cutting instruments cut the lining loops. The guide ring k
forms the cylindrical fabric into a double flat shape ready for the two take up
rollers which draw it farther up to be widened by a stretcher m whence the
fabric is drawn farther by the draw through rollers p p and rolled upon the batch
roller p².
The driving shaft e drives the take up rollers through the wheels e¹ the shaft e²
and the worm and worm wheel. The chain 3 transmits movement to the upper
take up rollers p p. On both sides of the stretcher m is a roller nn of india
rubber, driven by bevel wheels on the shaft from the spur wheels n³ n². The
screw n¹ presses the rollers against the goods and the stretcher in order to impart
movement to the fabric on both sides. The ring and the disc h give a certain
tension to the goods before entering the cutting apparatus and the ring i secures
the exact position of the goods after having been cut.
E
The workman must carefully watch the correct entrance at h h and can easily
stop the work by shifting the lever and thereby separating the draw through
rollers pp.
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 :-
Claim. In a machine for cutting the lining loops of tubular knitted goods the
combination of cutting or crushing instruments arranged round the tubular work
with guides stretcher and take up each cutting apparatus consisting of shears with
guard and catch plate with straight blade and rotating or oscillating cutter or
consisting of crushing or pressure plates and the guides giving the right direction
and tension to the fabric which is by a take up uniformly drawn through the
machine and rolled upon a batch roller.
Dated this 31st day of July 1894.
E. T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agent for the Applicant.