DE2226451A1 - Device for feeding the thread and regulating the tension - Google Patents

Description

DIPL-INQ. DIETER JANDER DR.-INQ. MANFRED BÖNINQ

8 MÖNCHEN 80 (BOSENHAUSEN) KOLBERGER STRASSE 21

Phone: 08 114 982704

PATENT LAWYERS

Delivery address: reply to:

1 BERUIN 33 (DAHLEM) HOTTENWEG 15 Telephone: 0311/1 8324066 Telegrams: Consideration Berlin

1088/13 813 26th Shark 1972

Patent application by Mr. Luis Kline

and Fernando Jose Silberman

Estados Unidos 1666, 3rd. Floor and Chacabuco 145, Buenos Aires, Argentina

" Device for feeding the thread and regulating the tension"

The invention relates to a device for feeding the Thread and to regulate the tension of the thread, which can be used on knitting machines.

Knitting machines, which are used both in industry and in the household, have devices for tensioning

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of the thread. The devices known so far can only compensate for an excess length of the thread of a few centimeters, which in the Very little compared to the distance the viagen travels back and forth between the ends of the fabric.

Industrial knitting machines with motor drive must therefore be provided with a special device that is used to move the car back and forth or - if applicable - the thread holder to a few centimeters beyond the edges of the fabric to be knitted. Whenever the width of the fabric is to be changed to a large extent, therefore, the special device must be adjusted to the new width will. Changes in the width of fabrics can therefore not be arbitrarily predetermined on the knitting chair, since such changes in size are dictated by the latitude allowed by the particular device that the Back and forth movement of the carriage or the thread holder is limited. Such changes also depend on whether with a Single-thread or multi-thread loom is knitted with the appropriate thread holder type.

In home knitting machines, which have become popular all over the world in recent years, the carriage is moved by hand. Therefore, when the carriage goes over the end of the fabric, there is no problem in stopping the carriage. However, if - for whatever reason - the car on the right track transcended, who operates the machine has the excess thread by _hand: tip, so that the clamping device can operate. The tension in the feed of the thread is a critical point in the handling of knitting machines both for industrial purposes and for home use. Excessive thread tension leads to poor machine performance: the carriage moves slowly

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and. here, needles bend and the thread breaks. on the other hand If the tension in the thread feed is too low, the fabric becomes loose, loops fall off the needles and the pattern becomes buggy. The thread continues to get caught on and between the needles so that the knitting process is interrupted must become. The tensioning device must therefore ensure that the thread feed takes place exactly when the thread is fed must become. However, while changing its direction of movement, the carriage must not cause such a large thread output that that the tensioning device can no longer take up the excess thread, so that the tension drops and avoiding loosening of the thread during subsequent movement of the carriage.

A short time afterwards the hand-operated knitting machines appeared had prevailed for domestic use, the desire arose to perfect the machines by means of motor drives. Reason this was the pursuit of greater comfort for the housewife, since the manual movement of the carriage on the knitting chair after a few hours it becomes very tedious and even impossible for old or physically handicapped people. The wish became even more so when, shortly after the machines came into use, a small handicraft-like industry developed, who works with these machines and wants to produce as efficiently as possible. .

Initial attempts to drive knitting machines for household use with a motor were unsuccessful. It is true easy to provide knitting machines for household use with a motor, if only pieces of fabric more definite and uniform Width to be knitted. This can be done with the help of an endless chain that moves the car as is known from the machines used in industry. When working with machines for household use It isn't, however, a matter of tissue pieces only in a few cases

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to knit a certain and uniform width. The same goes for using the machines in small ones Arts and crafts enterprises.

In addition, the various industrial devices that control the reciprocating motion of the knitting chair carriage or adjust the thread holder to the width of the fabric to be knitted, not on household knitting machines transfer. Indeed, such devices are not only complicated and expensive, they also require operation and maintenance a trained worker who is not available in the home or in most small businesses.

So far it has not been possible to use the conventional devices for tensioning the thread on motorized knitting machines for domestic use, and neither by a change in the size of such devices, or by some other means. This is due to the considerable Difference in the tensions that occur in the various working positions of such clamping devices.

Recently, there have been developed some drive systems for knitting machines for domestic use, which are composed of an endless chain or belt that moves the carriage. The chain or belt is driven by a reversible motor. The to-and-fro movement of the carriage is regulated by means of an adjustable reverse lock, which is controlled from the carriage, so that the motor drive is switched over after completion of a reciprocating movement.

However, this way of driving knitting machines for domestic use with a motor leads to unsatisfactory

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results. The motor drive required is more complicated, more expensive and more sensitive to wear than an ordinary continuous drive. Further cause the constant reversible operations performed by the motor as well as the entire drive device, all parts Vibrations and thereby increase wear. In addition, they prevent the V / a gen on his way moved back and forth evenly, and finally is one Constant readjustment of the locks that limit the movement of the carriage is required in order to prevent the to-and-fro movement of the carriage to adapt to a possibly changing width of the fabric.

The failure of all attempts at the drive problem Knitting machines for household use by means of a device for regulating the reciprocation of the carriage on the knitting chair - as it is usual to solve with industrial machines, the reason was to look for a solution with the the above-mentioned control of the reciprocating movement can be dispensed with and in which the carriage moves at each Moved back and forth over the entire length of the knitting chair, regardless of the width of the knitting Tissue and further independent of the position of the tissue on the knitting chair. So there had to be a device for feeding of the thread and to regulate the tension of the thread, which allows the thread to be picked up is released in excess when the car, as it were, moves idle over the points of its path which is not knitted and which nevertheless maintains a substantially uniform thread tension.

Such a device is the subject of the present invention. Attempts with different embodiments of the

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Invention carried out have led to good results. ·

The new device for feeding the thread and regulating tension used on knitting machines can, consists in. a tensioning arm, which is movably fixed at one end, while at the other end a Thread guide is attached. The tension arm usually consists of a light and relatively elastic rod that subject to the action of a resilient device which can move the free end of the tension arm upwards.

The new device is characterized in that between the movable point of application of the resilient device and the point of application of the pressure against the clamping arm a device is built in that amplifies the respective displacements, in such a way that the tensioning arm a noticeable rotation about the axis to which it is attached, experienced by a very small movement is triggered, which performs the movable point of application of the resilient device. Through this it is achieved that the pressure which is exerted by the resilient device, essentially during the angular movement or the rotation of the arm remains constant.

This new device for feeding the thread and for regulating the tension of the thread can be in various ways within the scope of the invention V / be constructed.

A preferred embodiment of the invention is as follows: The tension arm is fixed at one end to the axis of a small one Gear connected, which can move on a toothed rail. The dental splint forms a round arch, its Radius is much larger than the radius of the small gear. The axis of the small gear is rotatable on the attached to one end of at least one guide rod. The other end of the guide rod is rotatable at the center

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attached to the aforementioned arch. The guide rod is subject the effect of a resilient device that rotates the guide rod around the center of the arch can bring. So there is a very small displacement of the movable support point of the resilient device a rotation of the guide rod about its axis by a corresponding angle. This also makes the The axis of the small gear rotated by the same angle around the center of the arch. Due to the difference in the radii of the round rack and the small gear, however, is caused by the orbital motion of the said gear the angular movement of the axis of the small gear around itself is much greater, so that the movable one The tensioning arm of the tension regulating device rotates through a much larger angle.

In another embodiment of the invention, the tensioning arm is firmly connected to a rotatably mounted small one Gear, and between the movable support point of the resilient device and the above-mentioned small one Gear is interposed with a transmission gear. The device that controls the displacement between the movable The point of application or support of the resilient device and the point of application of the pressure against the tensioning arm are reinforced, consists of a one- or two-armed lever, whose The force arm is much shorter than the load arm. The amplification can still be achieved by means of two series-connected Lever can be enlarged, so that the booster effect of the first lever is increased by the second lever.

From the possibility of regulating the pressure exerted by the resilient device, according to the invention be used in such a way that the tension in the

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guidance of the thread is adapted to the different types of threads and fabrics;

The drawings show further features and construction details and advantages of the device according to the invention.

Figure 1 is a side view of one of the preferred forms. It shows how the device for feeding the thread and can be designed to regulate the tension. The clamping arm is in its upper end position.

Fig. 2 shows the same as Fig. 1, but is located Clamp arm in its lower end position.

Fig. 3 shows a plan view of the device.

Fig. 4 shows a perspective front view of the device.

Fig. 5 shows in a perspective representation the in Figs. 1 to 4 reproduced regulating device from the Back. The device is here on your circus chair attached to a home knitting machine. The machine rests on a support bench and is equipped with a motor drive.

Fig. 6 shows the same as Fig. 5, but in side view. FIG. 6a is an enlarged detail from FIG. 6.

Fig. 7 shows part of the device for moving the angled chair carriage.

Fig. Ο is a diagram of a preferred electrical circuit, Via which the machine's electric motor generates electricity

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receives.

Fig. 9 shows a partial side view of another form of construction the device for regulating the voltage, which has a transmission gear.

Fig. 10 is a partial side view of another form of construction the device for regulating the tension, in which the reinforcement by a one-armed lever is achieved.

The device for feeding the thread and for regulating the tension consists - as FIGS. 1 to 7 show - of a vertical one Support structure 1, which is connected to the carriage 2 of the knitting chair, as is the case with all known machines for domestic use is common. At the upper end 4 of the support structure 1 a part 5 is attached, which forms a toothed wheel track which is shaped as a round arc. In the present In the case, the part 5 is fastened to the upper end 4 with screws 7.

On the axis 8, which is arranged coaxially with the geometrical axis of the circular arc formed by the toothed wheel track, the ends of a pair of guide rods 10 are articulated, which are attached to both sides of the part 5 and which are attached to their other Ends 11 have drill holes in which the _ axis 12 lies. On the axle 12 there is a gear 13 which fits into the track 6. At the ends 12 ′ of the axle 12, the end 1 ^z 1 of a rod 15 is attached, which is made of a light and elastic material and the free end of which is designed as a thread guide 16.

A coil spring 17 attached to one end of the S axis is, is bent at one end 18 to a leg 19 »so. that it with this leg 19 against the point 10 'a

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of the two guide rods 10 pushes, while the other end 20 of the spring 17 presses against a clamping screw 21 which is partially screwed into one of the threaded bores 22 of the part 3 can be, whereby the adjustment of the tension of the spring 20 is made possible.

The new device for feeding the thread and for regulating the tension of the thread can be used with an ordinary knitting machine for domestic use can be arranged as shown in Figs.

The folding chair 3 is attached to a support bench 23 to which an electric motor 24 is attached. By means of a double reduction belt pulley 27 and 28, the electric motor transmits its rotary movement via belts 25 and 26 to a belt pulley 29 which is movably attached to bench 23 via axle 30. A small gear 31 ·> which is attached to the axle 30, communicates with a further small toothed wheel 32 in connection which is rotatably attached to the axle 33, which is also attached to the Bank 23rd The two small gears serve as holding and moving elements of an endless chain 34-. One of the hinge pins of the chain 34 protrudes laterally 35 and engages in the slot 36 which is formed by the part 37. This part 37 is firmly connected to a U-shaped profile piece made of iron 38, which can slide along the guide rail 39, which is fastened to the bench 23. The U-profile piece made of iron 33 is firmly connected to the V / a gen 2 of the knitting machine via a strap. The vertical support structure 1 is also attached to the lower end of the U-profile piece 38.

The container 41 for the ball 4-2 is firmly connected to the carriage 2. In the already known arrangement shown here, the thread 4-3 runs from the ball 4-2 through a "braking device" which

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is formed by a spring 44 which presses the thread against the solid surface 45. The conventional tensioning arm of the machine consists in the present case of a tensioning arm 4-6 with a thread guide 47 at its free end. The arm is shaped as a coil spring .48 at one point and is movably attached by means of an axis that goes through the coil. The other end of the spiral spring is an extension 49 which presses ^{against the spring l} \ - ^L Y. This already known arrangement of the tensioning arm 46 and the braking device on the machine lead to the fact that the extension 49 of the spring 44 only counteracts when the tensioning arm 46 has assumed its lower end position (drawn line in drawing 6) and so the thread of the Ball holder 41 can unwind. Above the mentioned position of the tensioning arm 46, the spring 44 prevents the thread 43 from unwinding from the ball 42. If more thread is required, the tensioning arm will move to a lower position until it reaches the open position of the spring 44 which forms the "brake". As the thread 43 unwinds from the ball 42, it passes through the brake formed by the spring 44 and runs over the surface 45. It then passes through the thread guide 47 of the tensioning arm 46 of the machine and then through the thread guide 16 of the new tension arm 15 · After the thread has passed through the thread holder 50 of the carriage, it arrives at the needles of the knitting machine.

The new regulating device works on a knitting machine for domestic use as follows (see. Fig. 5 to 7) ^:

When the electric motor 24 is in operation, the endless chain 34 moves continuously (as will be shown later, can also move the chain partially). When the side digging Hinge pin 35 in its upper track at the end

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Moving loose chain 34, he pushes parts 37 and 3S and the elements firmly connected to them - carriage 2, support structure 1, etc., to one end of the machine, while a shift in the other direction takes place if the protruding one is located Hinge pin 35 is moved along the lower track of the chain 34.

At the ends, the hinge pin 35 moves within the Slot 36 either up or down and changes so from one track to the other.

The further function of the new device for feeding the thread and for regulating the tension is based on two Borderline cases and an average case are explained.

Borderline case I:

The entire length of the knitting chair is filled with fabric. The machine knits along the back and forth movement of the carriage 2. The tensioning arm 46 of the machine therefore remains permanently in its low position, in which the spring 44 of the "brake" is loosened is and therefore the thread 43 from the ball 42 in the Container 41 can be handled. The tensioning arm 46 moves in the short time in which the carriage 2 is beyond the ends of the tissue move only a little up or down. The tension arm 15 of the new device for supplying the thread and to regulate the tension - which in the present case fulfills no function at all - remains during the entire Time practically in its lower position (solid line in Fig. 6), the position of the "brake" of the tensioning arm 46 corresponds, in which there is no braking. The tensioning arm 15, like the tensioning arm 46, only goes slightly into the Height when the V / a gen is in the position on the edge of the knitting chair.

In this limit case 1, the new device is for feeding of the thread and to regulate the tension.

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fluid, as the V / agen 2 never moves a distance moved beyond the edges of the fabric which is larger than what the tensioner arm 46 of the machine can compensate for.

Grensfall II:

The machine should knit a fabric on the edge of the knitting chair that is only 5 cm wide. It is to be assumed that the carriage begins its movement at the end of the knitting chair where the fabric is and that both the tensioning arm 46 as well as the new tension arm 15 at the beginning in their upper end position. The carriage starts moving at the named end and then moves to the other End to. The need for thread brings the free end 16 of the tensioning arm 15 of the new device to an initial one Downward movement to the point where the tension arm 15 has reached such a low position that the tensioner arm 46 of the knitting machine is caused to move down to its lowest position, so that the thread 43 unwound from the ball 42. When the carriage has reached the opposite end of the knitting chair and moving backwards begins, thread has unwound in excess. Therefore the tensioning arm 46 rises above the position in which the spring 44 loosens the "brake". This increase is due to the upward movement of the clamping arm 15 which is part of the new regulation device. Of the Tension arm 15 takes up the excess thread.

It is easy to understand from FIGS. 1 to 7 and the associated description that a tensioning arm 15 _} which is half as long as the armchair 3 can easily take up the entire thread 43, which is released in excess if it is the carriage idles because of the lack of tissue. In this case, the clamping arm moves

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from its lowest position (solid line in Figure 6) to a position which in IT & he its upper end position: lies (dashed line in ITig. 6).

When the tension arm Λ6 moves into the upper position, the point of application 19 of the spring 17 hinders its position only very little. This is because between the point of application 19 of the spring 17 and the clamping arm 15 cLas transmission gear for changing the angular movement is interposed, which consists of the guide rod 10 and the gear wheel 13, which can move on the rack 6. This translation ensures that the difference in the pressures that prevail at the point of application 19 of the spring in different positions of the tensioning arm 15 is practically negligible.

It must be added that the tensioning arm 15 in his highest position in which it takes up a maximum of excess thread and in which the spring 17 is least tensioned assumes an approximately vertical position (dashed line in FIG. 6). This will reduce the voltage the spring 17 increased again by the component that of the Force decomposition of the corresponding parallelogram arises. In the lowest position, in that of the clamping arm 15 no excess thread is picked up and which is close to the horizontal position of the arm in the particular the elasticity of the rod forming the arm has to be taken into account, the increased tension of the spring 17 will be accordingly reduced by the direct influence of the tension of the thread 43, which is in a practically transverse direction to the tensioning arm 15 is exercised.

As can be seen from the description of borderline case II and what is in accordance with the experimental results is the tension of the thread that reaches the needles of the knitting chair, at the end of which the narrow fabric is

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is practically constant, although the tensioning arm 15 the new regulating device at a certain point in time 'must take up a little more thread than the length of the knitting chair is equivalent to. The voltage is essentially equal to the voltage in limit case I.

Kittelfall:

On a circular chair with a usable length of 120 cm, a fabric 20 cm wide is to be knitted in the middle. The starting point is the position in which the carriage 2 is at one end of the knitting chair and in which both the tensioning arm 15 and arm 46 are also in their lowest position. By the time the carriage begins to move backwards, both the tensioning arm 15 and the arm 46 are moved upwards until they have taken up 50 cm of excess thread to have. When the thread holder 50 of the carriage 2 is back on the edge of the tissue arrives, the tensioning arm 15, which has reached a middle position in its upward movement, begins with a downward movement because the carriage needs more thread '. Of the Clamping arm 15 continues its downward movement, followed by arm 46, to the lowest position in which the arm 46 the "Brake" 44 and 45 releases again, so that more thread 43 of the Skein can be unwound. In this lower position, the arms come to the opposite end of the machine. The same process is repeated when the carriage 2 moves back again. The tension in the thread feed is at all times the same as in the two aforementioned cases. These three cases of operation of the new device necessary for feeding of the thread and to regulate the tension and which can be used on knitting machines show that the Uenubzer the machine neither by the width of the fabric nor by docncn Larje on the knitting chair. That is what the service does very simple and convenient, as the fabric has a uniform Thread tension can be knitted without first Λυ ill, j ο round for the J J in and backward movement of the carriage.

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assumed ν / must earth.

The new regulating device, which is shown in FIGS. 5 to 7 and described above, can be used directly on knitting machines can be used without having to make any significant changes to the machines. In particular the Ball holder 41, the tension arm 46 and the braking device and 45 remain unchanged. This possibility, the new regulating device There are several practical advantages to using it. First, it must be on the knitting machine made in the factory no change will be made. Second, it is beneficial and economical to ball the original. holder and the original braking device. If the knitting machine is to be operated by hand, it is finally sufficient to connect the U-shaped section 28 to solve on the iron with the carriage 2 via the tab 40, so that you can do without the tensioning arm 15 and without the other elements, which did not originally belong to the knitting machine. However, the arm 15 can be used when the machine 'is operated by hand. In this case, the arm 15 only has to be attached directly to the carriage 2.

The new device for feeding the thread and for regulating the tension can of course also have its own ball holder and their own brake. The brake may be of the type shown and described in the drawings or of any other type. In this case you can go without the original parts (Ball holder, brence and tension arm) of the knitting machine.

The circuit diagram in Fig. Ύ is only given to show that the motor drive of an oi; rickmanchine for domestic use can be achieved with latteln, which are used for! - 'weck her oil ;.'; are known. It can r.lclcn Iv. ¹ your for one:; ont: i nni or! iclion drive linndoJn, \. \ ip e: r ^ ov.'iiiiiion i v.'iru,

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when knitting a fabric of constant width and pattern, or around a discontinuous one Drive when changes have to be made between the back and forth movements of the cart, e.g. because of an increase or decrease in width, for openwork fabric, ornamental patterns, etc.

In the circuit diagram of drawing 8, 51 is the mains connection for alternating current. The main switch 52 regulates the power supply for the electric motor 53 »which is equipped with a brake ^ A. 55 is a foot switch, 56 is a hand switch, 57 is a relay with its accessories. 59 and 60 are limit switches which are actuated by the knitting chair carriage at the end of each reciprocation, as indicated by arrows 61 and 62. It is apparent to those skilled in the art that closing the main switch 52 and the foot switch 55 - while the hand switch 56 remains open - is sufficient to continuously operate the electric motor and move the carriage back and forth until the foot switch 55 is opened . If, however, the hand switch.56 is operated and then the foot switch for a short time, the electric motor is put into operation. At the same. Time the relay is energized and the armature 58 allows the power supply. The knitting chair carriage begins to move back and forth, as the arrows show - either in the direction or in the direction 62 -. At the end points of the to-and-fro movement, the carriage 2 actuates one of the limit switches 59 or 60 and, if the foot switch 55 is open, causes the relay 57 to fail and the motor to stop. As a result, the carriage stops at one of the end points of the reciprocating movement, which enables the machine operator to widen, narrow, etc. the fabric on the knitting chair before the carriage moves further.

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emotional.

The embodiment shown in Figs. 1 to 7 is in .Rahinen of the invention can be modified, as FIGS. 9 and 10 show, in which two of many other possible embodiments are shown.

In FIG. 9, the new tensioning arm 15 is firmly connected at its ends to the small gear wheel 13, which is rotatably attached to the base plate 4 '* with the axis 12. The spiral spring 17 is attached to the pin 8 ', which is also attached to the base plate 4 ¹ ', and is bent over on one side 18 at the end 19 so that it protrudes into the hole 63 of the disk 64. The disk 64 is provided with a toothed segment 65 and is rotatably attached to the fixed axis 66. The other end 20 of the spring 17 presses against an adjusting screw 21 which can be partially screwed into one of the threaded holes in the base plate 4 ″. A double gear train 67 and 68 is rotatably mounted in the center on the fixed axis 69 and transmits the angular displacement of the disc 64 with the tooth segment 65 to the gear wheel 13, whereby the angular movement is increased, as can be seen from FIGS. In this embodiment, a small displacement of the movable support 19 of the resilient device 17 - as shown by the full line and the dashed line in drawing 9 - corresponds to a much larger rotation of the tensioning arm 15.

The same applies to the embodiment shown in FIG. 10. Here the curved piece 19 of the arm 18 of the coil spring is exercising 17, which is attached to the pin 8 ', exerts pressure on one end 70 of the one-armed lever 71, which is attached to the axle is appropriate. The axis 72 is rotatable on the base plate 4 '' attached. The end 75 of the other lever arm 74 of the lever 71 can

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Rotate the arm 15 via the movable link 73 to the extension, which is movably attached by means of the axis 12 to the base plate 4 ¹ '. In this embodiment, too, the angular movement of the arm 18 of the spring 17 is considerably increased and finally transmitted to the tensioning arm 15.

The new device for feeding the thread and for regulating the tension on knitting machines for domestic use can of course also be used on industrial knitting machines. In this Case can be on the special device for limiting the reciprocation of the carriage or on the thread holder, which is adapted to the width of the fabric can be dispensed with.

2098 5 0/0923

Claims (9)

DIPL..INQ. DIETER JANDER DR..INQ. MANFRED BONING PATE NTANWALTE claims 1. Device for feeding the thread and regulating the ' Tension of the thread that can be used on knitting machines that have a tension arm attached to one of its ends is movably fixed, while a thread guide is attached to the other end, and the effect of a resilient Device is subject to which the free linden tree of the clamping arm can move upwards, characterized in that that between the movable point of application of the resilient device and the point of application of the pressure against the clamping arm a device is built in that amplifies the respective displacements, in such a way that the tensioning arm a undergoes noticeable rotation, which is triggered by a very small movement, which is the moving point of application of the resilient Device performs. 2. Device according to claim 1, characterized in that that the movably attached end of the tension arm is firmly connected to a small gear, which is on a Can move the rack, which forms a round arch, the radius of which is significantly larger than the radius of the small gear, wherein the axis of the small gear is movably attached to the end of at least one guide rod, whose the other end is rotatably mounted in the middle point of said arch and that of the action of a resilient device is subject, which can rotate the guide rod about its movable attachment. 3. Device according to claim 2, characterized in that that the axis of the small gear is rotatably attached to one end of the two guide rods, leren others Ends are movably attached to an axis that reads in the center of the arch that the dental splint forms while 209850/0923 PIPL.-INO. DIETER JANDER DR.-INO. MANFRED BONINQ PATENT LAWYERS the resilient device is formed by a spiral spring attached to the "movable attachment of the two guide rods is attached, and runs out into a curved elbow, which acts as a movable point of application of the resilient device serves and presses against the lower edge of one of the two guide rods, while the other end of the spiral spring against an adjustable. Lock presses, which is located on the part with the dental splint. 4. Apparatus according to claim 1, characterized in that the clamping arm is firmly connected to a small gear is, which is rotatably mounted, and that between the movable point of application of said resilient device and a transmission gear is built into the small gear. 5. The device according to claim 1, characterized in that the device that controls the displacements between the movable point of application of the resilient device and the Point of attack whose pressure against the clamping arm is reinforced by a movably mounted lever, the force arm of which is significantly shorter than the load arm, is formed. 6. Device according to claims 1-5, characterized in that the new tensioning arm with a standard knitting machine for household use, which in particular has a ball holder, a tensioning arm and a braking device, is combined, and that the thread from the thread guide of the original tensioning arm to the thread guide of the new tensioning arm runs before it gets to the thread holder of the cart of the standard knitting machine. 7. Device according to claims 1-5, characterized in that the new clamping arm has its own ball holder and has its own brake and that the thread from said own ball holder to said own Brake and to the thread guide of the new tension arm runs before he reaches the thread holder of the carriage of the household knitting machine. 209850/0923 - 22 - DIPL.-INQ. DIETER JANDER DR.-INQ. MANFRED BDNINQ PATENT LAWYERS 8. Device according to claims 1-5, characterized in that the new clamping arm with an industrial Knitting machine, in particular with the bobbin holder, the tension arm and its braking device, is combined and that the thread from the thread guide of the original tension arm to the thread guide of the new tension arm runs before it reaches the thread holder of the industrial knitting machine. 9. Device according to claims 1-5, characterized in that the new tension arm has its own bobbin holder and has its own brake and that the bathing of the bobbin holder to the brake and the thread guide of the new tension arm runs before it goes to the thread holder 'of the industrial Knitting machine arrives. 209 8 5.0 / 09 2 3