Improvements in Knitting Machines.
Year: 1891

page_text: Date of Application, 14th Aug., 1891
Complete Specification Left, 12th May, 1892-Accepted, 9th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Knitting Machines.
I, FRANS GOSTAV GRÖNROS of Kronwerksky Prospect 63 St. Petersburg in
the Empire of Russia Manufacturer do hereby declare the nature of this invention
to be as follows:-
:-
My present invention relates to knitting-machines having two sets or rows of
needles arranged parallel with and opposite each other, the latter being adapted to
be shifted or displaced one with relation to the other, and the fabric thereby
alternately transferred from one row of needles to the other and the loops formed
at one time on one row of needles and at the other time on the opposite row; and
the object of my invention is to enable this type of knitting machine to be used for
producing figured fabric.
My invention relates especially to that class of knitting-machine in which the
above mentioned method of working is effected by means of slides which pass over
the hook of the needles and cause the loops to be transferred to the opposite row
of needles.
For this purpose 1 arrange the knitting-machine in such a manner, that on the
one hand the above mentioned slides are actuated by a Jaquard-mechanism and on
the other hand the rows of needles are shifted by means of a particular mechanism,
and by the cooperation of both, single loops may not only be transferred but also
displaced on the needles.
The well-known needle-beds and carriage are arranged in the frame of the
machine in the usual manner and the carriage is actuated by means of an ordinary
crank lever and a connecting rod. The needles of usual shape are actuated through
their upwardly directed heels by means of the usual V-shaped cams of the carriage.
The slides are arranged to move along the top of the needles and are similarly
actuated by another set of cams of the said carriage. On the rear end of the slides
I also arrange heels extending in a downward direction and engaging with
suitable hooks of the wires adapted to be intercepted or operated by the cards of
the Jaquard-mechanism. These wires or rods are arranged to move vertically,
as well as in a direction transversely to that of the said carriage. The lower ends
of the said jacquard-wires or rods are ordinarily resting on that jacquard-card of
the chain which is momentarily lying on the upper face of the prismatic card-drum.
Owing to the fact that some of these wires are intercepted by the perforated
card and in cooperation with the above mentioned mechanism the following working
is effected.
Provided, that the right hand row of needles hold the fabric and the slides on
top of the same are drawn back, the said needles as well as the left hand sinkers
actuated in the usual manner by V-shaped cams of the carriage are simultaneously
advanced so as to push the loops of the fabric on to the shank of the right hand
needles. Then the latter are drawn back, so that the slide-pieces on top of the
same, remaining stationary, will offer their hook-shaped points for the reception of
the loops which are retained by the aid of the right hand sinkers. In this position
the thread-guide of usual construction passes over the hook of the right-hand
needles and introduces the thread or yarn into the latter. After the right-
hand needles are drawn back while the other parts remain in the former position
until the hooks of the needles have been closed by the slides, also the latter return
into their initial position, whereby a new row of loops is formed, while by means
of the corresponding sinkers the loops previously formed by the other set of
needles are pushed off. In order to transfer these new loops to the opposite row
of needles they are to be carried first of all into the cavities at the hook-shaped

page_text: points of the corresponding slides. This is effected just in the manner described,
as the loops being retarded by the left hand sinkers are pushed on to the shanks
of the right-hand needles whereupon the latter are drawn back while the slides
remain stationary. At the same time the left-hand row of needles is advanced
until the hooks of the same arrive beneath the corresponding right-hand slides.
The right-hand sinkers are moreover turned to the left and transfer the loops of the
fabric from the right-hand slides to the left-hand needles. However if it is intended
to transfer some of these loops instead of onto the needles being right opposite
their corresponding slides unto such adjacent needles, which are for about one or
more pitches displaced in relation to the corresponding slides of the other needle-
bed, the working of the machine will be as follows:-
The jacquard-wires or rods corresponding to the loops of the fabric to be
displaced enter the perforations of the jacquard-card just properly placed with.
the card-drum. Thereby the suitable shaped branches of the respective jacquard-
wires or rods ordinarily engaging their relative cam grooves causing the backward
motion of the slides, are withdrawn during the transfer of the loops and while the
slides remain stationary. When the mechanisms are occupying the position as
aforesaid one half of the needle-bed is moved forward by aid of a device
particularly designed for this purpose a distance, in conformity with that of the
needles from each other. On the thereupon following forward-movement of
the carriage the left-hand needles are advanced by the corresponding cam grooves,
while the right-hand slides are caused to move backward by means of a vertically
moveable and suitably shaped cam being caused to engage the said branches of the
jacquard-wires. At the same time by means of the right-hand sinkers the loops of
the fabric are pushed on to the shank of the left-hand needles, while on the left
side of the machine the formation of the loops and the transfer of the same is
accomplished. The said cams are guided in the said carriage and provided with
suitable projections engaging inclined slots of guide bars, which preferably extend
to that side of the machine supporting the driving mechanism where they are
moreover provided with particular cams. In the path of the latter are arranged
on the frame of the machine small studs or projections in such a manner that just
before the carriage carrying the said guide bars has reached its foremost position
the cams connected to the latter will meet the said studs on the frame and thereby
the said guide bars are caused to accomplish a to-and-fro motion and once to raise
and lower the above mentioned cam engaging an inclined slot of the said guide
bars. In this manner two loops are transferred on to one needle and thus in the
fabric a number of perforations formed according to the desired design and the
arrangement of the holes in the jacquard cards.
Owing to the short distance of the needles from each other the perforations in
the jacquard cards would come too close together for securing a proper and exact
operation of the jacquard wires or rods and the mechanism governed by the same.
Therefore arrange these perforations at the corners of a zig-zag line and for
this purpose the jacquard wires are at their lower ends alternately bent to one
side and the other of an imaginary line drawn at the middle and parallel to the
double row of the perforations in the cards. The upper ends of the said wires
engaging with the slide pieces on top of the needles may notwithstanding be
thereby arranged within one plane. Instead of arranging the perforations in the
cards and the ends of the wires intercepted by the same in two rows they may also
form several rows.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Knitting Machines.
I, FRANS GOSTAV GRÖNROS of 63 Kronwersky Prospect, in the City of
St. Petersburg, in the Empire of Russia, Knitter, 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 the knitting-machines having two sets or rows of needles
arranged parallel with and opposite each other, the latter being adapted to be
shifted or displaced one with relation to the other, and the fabric thereby alternately
transferred from one row of needles to the other and the loops formed at one time
on one row of needles and at the other time on the opposite row; and the object of
my invention is to enable this type of knitting-machine to be used for producing
figured fabrics.
My invention relates especially to that class of knitting-machine in which the
above mentioned method of working is effected by means of slides which pass
over the hook of the needles and cause the loops to be transferred to the opposite
row of needles.
For this purpose I arrange the knitting-machine in such a manner, that on the
one hand the above mentioned slides are actuated by a Jacquard-mechanism and on
the other hand the rows of needles are shifted by means of a particular mechanism,
and by the co-operation of both, single loops may not only be transferred but also
displaced on the needles.
I attain this object by the mechanism illustrated in the accompanying drawings,
in which
Figure 1, is a side elevation of my improved knitting-machine;
Figure 2 is a cross section of the needle-beds and the carriage in a position of the
latter above the needle-beds;
Figure 2 shows a detail of the Jacquard-mechanism;
Figure 2 is a sectional elevation of a part of the carriage removed from the
frame of the machine the mechanism being in the opposite position as shown in
Figure 2;
Figure 3 is a top view of the knitting-machine in the position of parts illustrated
in Figure 1;
Figures 4 to 15 illustrate the different relative positions of needles and parts
connected therewith, which they assume to pass the fabric from one set of needles
to the other.
Similar letters of reference indicate corresponding parts throughout the several
views.
The needle-beds A. and carriage B are arranged in the frame C of the machine
in the usual manner and the carriage is actuated by means of an ordinary crank
lever D and a connecting rod C. The needles a of usual shape are actuated
through their upwardly directed heels a' by means of the usual V-shaped cams 1, 1
of the carriage. The slides are arranged to move along the top of the needles a
and by aid of upwardly extending projections are similarly actuated by another
set of cams 2, 2 of the carriage B.
On the rear end of the slides I also arrange heels 62 extending in a downward
direction and engaging with suitable hooks c' of the wires c adapted to be intercepted
or operated by the cards of the Jacquard-mechanism. These wires or rods c; which
are guided by the beams d of the frame C arranged parallel to the direction of
the movement of the carriage B in such a manner, that they may move vertically,
as well as in a direction transversely to that of the said carriage, Figure 2. The
lower ends of the said jacquard-wires or rods c are ordinarily resting on that
jacquard-card of the chain which is momentarily lying on the upper face of
the prismatic card-drum f.

page_text: Owing to the fact that some of these wires are intercepted by the perforations e
of the card and in co-operation with the above mentioned mechanism the following
working, illustrated by Figures 4 to 15, is effected. Provided, that the right hand
row of needles a hold the fabric and the slides on top of the same are drawn
back (Figure 4), the said needles as well as the left hand sinkers y actuated in the
usual manner by V-shaped eams 3 of the carriage are simultaneously advanced so
as to push the loops of the fabric on to the shank of the right hand needles a
(Figure 5). Then the latter are drawn back, so that the slide-pieces on top of
the same, remaining stationary will offer their hook-shaped points for the reception
of the loops retained by the aid of the right hand sinkers will be received
within the cavities of the slides, Figure 6. In this position the thread-guide/
of usual construction passes over the hook of the right-hand needles a and
introduces the thread or yarn into the latter, so that on translocation into the
position, Figure 7, the right hand needles are drawn back while the other parts
remain in the former position until the hooks of the needles have been closed by
the slides b, also the latter return into their initial position, whereby a new, row of
loops is formed, while by means of the corresponding sinkers g the loops previously
formed by the other set of needles are pushed off. In order to transfer these new
loops to the opposite row of needles they are to be carried first of all into the
cavities at the hook-shaped points of the corresponding slides b.
This is effected in the manner described, as the loops being retarded by the left
hand sinkers are pushed on to the shanks of the right-hand needles, Figure 8,
whereupon the latter are drawn back while the slides remain stationary. At the
same time the left-hand row of needles a is advanced until the hooks of the same
arrive beneath the corresponding right hand slides . The right-hand sinkers g
are moreover turned to the left and transfer the loops of the fabric from the right
hand slides to the left hand needles. However if it is intended to transfer some of
these loops instead of onto the needles being right opposite their corresponding slides
unto such adjacent needles, which are for about one or more pitches displaced in
relation to the corresponding slides of the other needle bed, the working of the
machine will be as follows:-
The jacquard wires or rods a corresponding to the loops of the fabric to be
displaced enter the perforation el of the jacquard card e just, properly placed with
the card drum f. Thereby the suitable shaped branches e of the respective
jacquard-wires or rods c ordinarily engaging their relative cam grooves 21 causing
the backward motion of the slides, are withdrawn during the transfer of the loops
and while the slides remain stationary, Figure 10. When the mechanisms arc
occupying the positions as aforesaid one half of the needle bed is moved forward
by aid of a device F (Figure I, commonly employed in knitting machines but
which does not form part of this invention,) a distance in conformity with that of
the needles from each other. On the thereupon following forward-movement of
the carriage B the left-hand needles are advanced by the corresponding cam
grooves while the right-hand slides are caused to move backward by means
of vertically moveable and suitably shaped cams 2 being caused to engage the
said branches e of the jacquard wires (Figure 11). At the same time by means
of the right-hand sinkers g the loops of the fabric are pushed onto the shank of the
left hand needles, while on the left side of the machine the formation of the loops
and the transfer of the same is accomplished (Figures 12 to 15). The said
cams 2 are guided in the said cárriage B (Figures 2 and 3) and provided with
suitable projections engaging inclined slots of guide bars, which, preferably
extend to that side of the machine supporting the driving mechanism where they
are moreover provided with trapezoidal cams m. In the path of the latter are
arranged on the frame of the machine small studs or projections in such a
manner that just before the carriage carrying the said guide bars / has reached its
foremost position the cams m connected to the latter will meet the said studs n on
the frame and thereby the said guide bars are caused to accomplish a to and fro
motion and once to raise and lower the above mentioned cams 2× engaging by a
C

page_text: projection and inclined slot k of the said guide bars b.
In this manner two loops
are transferred on to one needle and thus in the fabric a number of perforations
formed according to the desired design and the arrangement of the holes in the
jacquard-cards.
Owing to the short distance of the needles from each other the perforations in
the jacquard-cards would come too close together for securing a proper and exact
operation of the jacquard wires or rods e and the mechanism governed by the same.
Therefore I arrange these perforations at the corners of a zigzag line (Figure 1)
and for this purpose the jacquard wires are at their lower ends alternately bent
right above the beams to one side and the other of an imaginary line drawn at
the middle and parallel to the double row of the perforations in the cards. The
upper ends of the said wires engaging with the slide-pieces on top of the
needles may notwithstanding be thereby arranged within one plane. Instead of
arranging the perforations in the cards and the ends of the wires intercepted by the
same in two rows they may also form several rows.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed 1 declare that what I
claim is :-
First. In a kuitting machine having two sets of longitudinally-movable needles
opposite to each other provided with slide pieces capable of longitudinal motion
thereon, the combination, of the said slide pieces with a Jacquard-mechanism, means
for transversely moving the needle-beds, and suitably shaped cams guided in the
usual carriage and adapted to engage a branch of the upper end of the jacquard-
wires or rods, substantially as and for the purpose set forth.
Second. In a knitting-machine with transversely moveable needle beds and two
sets of longitudinally moveable needles opposite to each other provided with slide
pieces capable of longitudinal motion thereon by means of Jacquard-mechanism, the
arrangement of the perforations in the jacquard-cards in two or more rows and
corresponding therewith the arrangement of the heels of the jacquard-wires or rods
intercepted by the former; substantially as and for the purpose set forth.
لبديل
M1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.