Title of Invention	DRAWING SYSTEM FOR A TEXTILE MACHINE
Abstract	The invention relates to a drawing system for a textile machine, comprising a carrier (2) that is configured to hold top rollers and that is mounted to pivot about a bearing axis (3) on a support (1). Said support (1) is fixed to a retaining bar (6) of the textile machine. The system is also equipped with an adjusting element (5, 11), which is used to displace the carrier (2) in relation to the retaining bar (6). The invention is characterised in that the adjusting element (5,11) is mounted on the support (1) in such a way that it causes the position of the carrier to be modified in relation to the retaining bar (6), by altering the pivoting angle of said carrier (2), whilst the spatial position of the bearing axis (3) remains unchanged.

Title of Invention

DRAWING SYSTEM FOR A TEXTILE MACHINE

Abstract

The invention relates to a drawing system for a textile machine, comprising a carrier (2) that is configured to hold top rollers and that is mounted to pivot about a bearing axis (3) on a support (1). Said support (1) is fixed to a retaining bar (6) of the textile machine. The system is also equipped with an adjusting element (5, 11), which is used to displace the carrier (2) in relation to the retaining bar (6). The invention is characterised in that the adjusting element (5,11) is mounted on the support (1) in such a way that it causes the position of the carrier to be modified in relation to the retaining bar (6), by altering the pivoting angle of said carrier (2), whilst the spatial position of the bearing axis (3) remains unchanged.

Full Text	FORM 2 THE PATENT ACT 1970 (39 of 1970) & The Patents Rules, 2003 COMPLETE SPECIFICATION (See Section 10, and rule 13) 1. TITLE OF INVENTION DRAWING SYSTEM FOR A TEXTILE MACHINE 2. APPLICANT(S) a) Name b) Nationality c) Address OERLIKON ACCOTEX TEXPARTS GMBH GERMAN Company MARIA-MERIAN-STRASSE 8, D-70736 FELLBACH, GERMANY 3. PREAMBLE TO THE DESCRIPTION The following specification particularly describes the invention and the manner in which it is to be performed : - ENGLISH TRANSLATION VARIFICATION CERTIFICATE u/r. 20(3)(b) I, Mr. HIRAL CHANDRAKANT JOSHI, an authorized agent for the applicant, OERLIKON ACCOTEX TEXPARTS GMBH do hereby verify that the content of English translated complete specification filed in pursuance of PCT International application No. PCT/EP2006/008251 thereof is correct and complete. Description The present invention relates to a drawing system for a textile machine according to the preamble of claim 1. A drawing system for spinning machines is known from DE 1 133 289 and has a carrier for receiving top rollers and a support, the carrier being pivotably arranged on the support about a bearing pin received by the support and being fixable by means of the support on a holding bar of a textile machine. The support comprises a stationary part fixed to the holding bar and a support part which can be pivoted relative to the holding bar. The stationary part of the support is fixed on the holding bar by means of a fastening screw in that the fastening screw engages in a bore on the holding bar. Furthermore, an adjusting screw is rotatably arranged on the stationary part of the support and is rigidly connected to the pivotable support part of the support. The support part can be pivoted relative to the stationary part of the support according to the adjustment of the adjusting screw. To adjust the desired position of the carrier and for readjustment because of manufacturing tolerances after a basic adjustment of the drawing system has been carried out during its assembly, the adjusting screw is rotated in the corresponding direction. It proves to be disadvantageous that the adjusting and fastening screws are relatively difficult to access in the assembled position in order to be able to carry out a readjustment of the drawing system. As these are arranged in the side of the support remote from the carrier, and are therefore located on the side facing the machine frame, it is necessary to disassemble a cover strip on the stationary part of the support for the readjustment as this cover strip covers the adjusting and fastening screws. Therefore the effort during a readjustment that becomes necessary to compensate manufacturing tolerances after the basic adjustment is not inconsiderable. Moreover, deformations on the holding bar may occur because of the fastening screw. Furthermore, during a readjustment of the drawing system, the spatial position of the bearing pin together with the pivotable link support part may be changed and this leads to a displacement of the mutually opposing top and bottom rollers in the horizontal direction. This displacement means that readjustment of the pairs of rollers with respect to one another after a height adjustment has taken place becomes absolutely necessary in order to be able to recommence operation. The object of the present invention is therefore to provide a drawing system which allows a simplified handling of the height-adjustability. This is achieved according to the invention by the characterising features of claim 1. Advantageous configurations of the invention are the subject of the sub-claims. According to claim 1 it is proposed that the adjustment element is arranged on the upper side of the support in such a way that it is accessible from the upper side of the support during operation of the drawing system. This allows the operating personnel to adjust the drawing system in the closed position of the carrier during operation of the drawing system by means of an operator-friendly accessibility on the side of the drawing system remote from the interior of the machine. Thus, the necessary outlay is reduced compared to the prior art in order, after the basic adjustment of the support because of manufacturing tolerances, to compensate the position deviations occurring which would lead to a positional change in the contact pressure and are to be absolutely avoided for the proper use of the drawing system. Moreover, a readjustment of the drawing system which is in operation can easily be carried out if this were to become necessary, for example due to reground rollers. An operator therefore does not have to busy himself between the drawing system and the machine frame as is the case in the prior art. Advantageously, the adjustment element can determine the angular position of the carrier on the bearing pin thereof by means of a lever arrangement. This brings about a change in the angular position of the carrier relative to the holding bar with an unchanged spatial position of the bearing pin. This means that the position of the pairs of rollers with respect to one another remains unchanged during and on completion of the height adjustment. This has the advantage that the readjustment of the pairs of rollers which is absolutely necessary according to the prior art is dispensed with and the height adjustment of the drawing system is also possible even during operation. The lever arrangement may preferably be configured as a dead centre mechanism which can be actuated with an operating lever. In this case, the lever arrangement may have a mounting link which carries an abutment of the dead centre mechanism, on which the adjustment element engages which determines the angular position of the mounting link about the bearing pin. The adjustment element is connected for this purpose by a lever to the abutment of the mounting link. The actuation of the adjustment element, in relation to the common bearing pin of the carrier and mounting link, leads to a change in the angular position of the mounting link. The actuation is transmitted by the lever arrangement with equal effect to the carrier, which changes its angular position to the same extent as the mounting link. The adjustment element may preferably be configured as a screw. The use of a screw as the adjustment element for the height adjustment, depending on the thread pitch of the screw, allows a finely matched height adjustment of the carrier relative to the support because of any manufacturing tolerances after the basic adjustment of the drawing system has taken place or during a position change that occurs caused by reground rollers. A receiver for the arrangement of the screw head of the adjustment element may be provided here on the upper side of the support, the receiver having a shape corresponding to the outer contour of the screw head to be received. Securing against undesired rotation of the screw, for example owing to vibrations transmitted to the support during operation of the textile machine, because of the frictional engagement occurring between the screw head and the receiver, is achieved in this manner. The frictional engagement is additionally improved owing to the positive arrangement of the screw head in the receiver, as large contact faces exist between the screw head and the receiver. Moreover, the receiver may be configured in such a way that the screw head can be at least partially countersunk in the support. Advantageously, a compression spring may be arranged on the screw shank. The preferably conical shape of the compression spring allows self-centring fitting in the support without additional components fixing the position of the compression spring. For this purpose, the compression spring is supported in the region of the receiver on the inner wall of the upper side of the support and on a lever arrangement that is arranged in the interior of the support, which lever arrangement is in operative connection with the carrier and the operating lever. Thus, the carrier located in the opened position, or the operating lever, can be prevented from falling down. Alternatively, a screw with a planar head may be provided as the adjustment element, a self-locking snap nut being arranged on the screw for the purpose of securing. In this embodiment of the adjustment element, a receiver described above for securing the screw against rotation may be dispensed with as the securing against undesired rotation of the screw is achieved by the self-locking nut. When the screw with a planar screw head is used, it rests on the upper side of the support. The invention will be described in more detail below with the aid of an embodiment shown in the drawings, in which: Fig. 1 shows a support and a carrier of a drawing system; Fig. 2 shows a detailed view of an adjustment element according to Fig. 1; Fig. 3 shows a detailed view of a second embodiment of an adjustment element according to Fig. 1; Fig. 4 shows a detailed view of a third embodiment of an adjustment element according to Fig. 1; Fig. 5 shows a partial sectional view of the carrier in the operating position of the drawing system. Fig. 1 shows a height-adjustable carrier 2 of a drawing system, which is arranged so as to be pivotable about a bearing pin 3 on a support 1. The support 1 can be stationarily fixed on two holding bars 6 arranged parallel to one another on the machine frame of a textile machine. For this purpose, the support 1 has recesses 7 corresponding to the contour of the holding bars 6 on its side remote from the carrier 2, so the support 1 positively surrounds the holding bars 6, in sections. The carrier 2 receives, in the conventional manner, top rollers, not shown, in loading elements 8, which, with corresponding bottom rollers of the drawing system, not shown, are used for drawing a fibre band. An operating lever 4 is arranged on the side of the carrier 2 remote from the loading elements 8. The operating lever 4 is used for unlocking and locking when opening or closing the carrier 2. By means of the operating lever 4, the carrier 2 is transferred from a closed position, in which the carrier 2 and the operating lever 4 are arranged substantially parallel to one another, into an open position, in which the carrier 2 and the operating lever 4 are arranged at an angle to one another and vice versa. In the closed position of the carrier 2, the top rollers are pressed against the bottom rollers, while in the open position, the top rollers and lower rollers are spaced apart from one another. The height-adjustable carrier 2 is adjusted by an adjustment element, which is arranged above the bearing pin 3 on the upper side of the support 1. The arrangement of the adjustment element is such that it is accessible during operation of the drawing system from the upper side of the support 1. The adjustment element is configured as a screw 5. The screw 5 is in operative connection with the carrier 2 and the operating lever 4 by means of a lever arrangement 16 arranged in the support 1. To adjust the carrier 2, the angular position of the carrier 2 is changed by means of the lever arrangement 16 by rotating the screw 5 in such a way that a height adjustment of the carrier is achieved. Fig. 2 shows a first embodiment of the adjustment element configured as a screw 5. The screw 5 has a conical screw head 12 here, which is held in a conical receiver 9 which is arranged on the upper side of the support 1 and extends into the interior of the support 1 proceeding from the upper side of the support 1. The receiver 9 is configured in such a way that its dimensions correspond with those of the screw head 12, so a frictional connection exists between the screw head 12 and the receiver 9. A positive connection is achieved by the shape of the receiver 9 adapted to the screw head 12, which leads to a large contact face between the screw head 12 and the receiver 9, so the frictional engagement is improved. A securing of the screw 5 against an undesired rotation during operation of the drawing system, for example because of vibrations, is achieved by the frictional engagement. A conical compression spring 10, which is supported in the interior of the support 1 on the upper side thereof and on the lever arrangement 16, is arranged on the shank of the screw 5. The compression spring 10, in the opened position of the carrier 2, causes the carrier 2 to be held in its opened position. In addition, the shape of the compression spring 10 brings about a self-centring installation of the compression spring 10 on the inner wall of the support 1 in the region of the receiver 9. Fig. 3 showed a second embodiment of the adjustment element configured as a screw 5. In this embodiment, the screw 5 has a ball segment-shaped screw head 13, which is also held substantially with frictional engagement in a receiver 9 corresponding to the shape of the screw head 13, so securing of the screw 5 against rotation is achieved. In this embodiment of the adjustment element as well, the positive connection between the screw head 13 and the receiver 9 brings about an improvement in the frictional engagement because of large contact faces. A conical compression spring 10 is also arranged on the shaft of the screw 5 to hold the carrier 2 in its opened position. Fig. 4 shows a third embodiment of the adjustment element, which is a screw 11 with a planar screw head, which rests on the upper side of the support 1. To secure the screw 11 against an unintentional rotation, a self-locking snap nut 14 is used. A specially shaped receiver for securing, as described in the preceding embodiments of the adjustment element, is not provided. The screw 11 is in operative connection with the lever arrangement 16 in the interior of the support 1 in the same way as the screw 5 with a conical or spherical screw head. Furthermore, a compression spring 15 surrounding the screw shank of the screw 11 is arranged between the self-locking snap nut 14 and the inner wall of the support 1, the compression spring also being used to prevent the carrier 2 in the opened position from falling down. Fig. 5 shows the lever arrangement 16 configured as a dead centre mechanism in more detail, the lever arrangement being used to lock the operating lever 4 in the closed position of the carrier 2 and for height adjustment. The lever arrangement 16 has a lever 19, which is articulated by its one end via an abutment 18 to a mounting link 17 and with its other end is connected to the adjustment element in such a way that the lever 19 can be adjusted in the vertical direction by the actuation of the adjustment element. The mounting link 17, like the carrier 2, is pivotably arranged on the bearing pin 3. A first lever arm 20, which is connected by means of a joint pin 22 guided in a slot of the lever arm 20 to a second lever arm 21, is articulated to the abutment 18. The second lever arm 21 is connected to the operating lever 4. The height adjustment during operation leads to a change in the angular position of the carrier 2 relative to the holding bar 6 with an unchanged spatial position of the bearing pin 3. The angular position is changed by the adjustment element in that, in the closed position of the carrier 2, the angular position of the mounting link 17 of the lever arrangement 16 is determined by means of the lever 19. This change is also transmitted by the lever arrangement 16 to the carrier 2 and leads to a change in the angular position of the carrier 2, the position of the bearing pin 3 remaining spatially unchanged. The easy accessibility for actuating the adjustment element during operation of the drawing system is to be attributed here to the arrangement according to the invention of the adjustment element on the support 1. WE CLAIM: 1. Drawing system for a textile machine, comprising a carrier (2) which is configured to receive top rollers and is arranged so as to be pivotable about a bearing pin (3) attached to a support (1), the support (1) being fixed to a holding bar (6) of the textile machine, and in that an adjustment element (5, 11) is present, by means of which the carrier (2) can be adjusted relative to the holding bar (6), characterised in that the adjustment element (5, 11) is arranged on the upper side of the support (1) in such a way that it is accessible during operation of the drawing system from the upper side of the support (1). 2. Drawing system according to claim 1, characterised in that the adjustment element (5, 11) determines the angular position of the carrier (2) on the bearing pin (3) thereof by means of a lever arrangement (16). 3. Drawing system according to either of claims 1 or 2, characterised in that the lever arrangement (16) is configured as a dead centre mechanism, which can be actuated with an operating lever (4). 4. Drawing system according to either of claims 2 or 3, characterised in that the lever arrangement (16) has a mounting link which carries an abutment (18) of the dead centre mechanism, on which the adjustment element (5,11) engages, and determines the angular position of the mounting link (17) about the bearing pin (3). 5. Drawing system according to any one of claims 1 to 4, characterised in that the adjustment element is configured as a screw (5,11). 6. Drawing system according to claim 5, characterised in that a receiver (9) for the arrangement of the screw head of the screw (5, 11) is provided on the upper side of the support (1), the receiver (9) having a shape corresponding to the outer contour of the screw head to be received. 7. Drawing system according to either of claims 5 or 6, characterised in that a compression spring (10) is arranged on the screw shank. 8. Drawing system according to either of claims 5 or 6, characterised in that the screw (11) is configured with a planar head, a self-locking snap nut (14) being arranged to secure the screw (11). ABSTRACT The invention relates to a drawing system for a textile machine, comprising a carrier (2) that is configured to hold top rollers and that is mounted to pivot about a bearing axis (3) on a support (1). Said support (1) is fixed to a retaining bar (6) of the textile machine. The system is also equipped with an adjusting element (5, 11), which is used to displace the carrier (2) in relation to the retaining bar (6). The invention is characterised in that the adjusting element (5,11) is mounted on the support (1) in such a way that it causes the position of the carrier to be modified in relation to the retaining bar (6), by altering the pivoting angle of said carrier (2), whilst the spatial position of the bearing axis (3) remains unchanged. To, The Controller of Patents, The Patent office, Mumbai. (Fig-1)

Full Text

FORM 2
THE PATENT ACT 1970 (39 of 1970)
&
The Patents Rules, 2003 COMPLETE SPECIFICATION
(See Section 10, and rule 13)
1. TITLE OF INVENTION
DRAWING SYSTEM FOR A TEXTILE MACHINE

2. APPLICANT(S)
a) Name
b) Nationality
c) Address

OERLIKON ACCOTEX TEXPARTS GMBH GERMAN Company MARIA-MERIAN-STRASSE 8, D-70736 FELLBACH, GERMANY

3. PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed : -

ENGLISH TRANSLATION VARIFICATION
CERTIFICATE u/r. 20(3)(b)
I, Mr. HIRAL CHANDRAKANT JOSHI, an authorized agent for the applicant, OERLIKON ACCOTEX TEXPARTS GMBH do hereby verify that the content of English translated complete specification filed in pursuance of PCT International application No. PCT/EP2006/008251 thereof is correct and complete.

Description
The present invention relates to a drawing system for a textile machine according to the preamble of claim 1.
A drawing system for spinning machines is known from DE 1 133 289 and has a carrier for receiving top rollers and a support, the carrier being pivotably arranged on the support about a bearing pin received by the support and being fixable by means of the support on a holding bar of a textile machine. The support comprises a stationary part fixed to the holding bar and a support part which can be pivoted relative to the holding bar. The stationary part of the support is fixed on the holding bar by means of a fastening screw in that the fastening screw engages in a bore on the holding bar. Furthermore, an adjusting screw is rotatably arranged on the stationary part of the support and is rigidly connected to the pivotable support part of the support. The support part can be pivoted relative to the stationary part of the support according to the adjustment of the adjusting screw. To adjust the desired position of the carrier and for readjustment because of manufacturing tolerances after a basic adjustment of the drawing system has been carried out during its assembly, the adjusting screw is rotated in the corresponding direction.
It proves to be disadvantageous that the adjusting and fastening screws are relatively difficult to access in the assembled position in order to be able to carry out a readjustment of the drawing system. As these are arranged in the side of the support remote from the carrier, and are therefore located on the side facing the machine frame, it is necessary to disassemble a cover strip on the stationary part of the support for the readjustment as this cover strip covers the adjusting and fastening screws. Therefore the effort during a readjustment that becomes necessary to compensate manufacturing tolerances after the basic adjustment is not inconsiderable. Moreover, deformations on the holding bar may occur because of the fastening screw. Furthermore, during a readjustment of the drawing system, the spatial position of the bearing pin together with the pivotable link support part may

be changed and this leads to a displacement of the mutually opposing top and bottom rollers in the horizontal direction. This displacement means that readjustment of the pairs of rollers with respect to one another after a height adjustment has taken place becomes absolutely necessary in order to be able to recommence operation.
The object of the present invention is therefore to provide a drawing system which allows a simplified handling of the height-adjustability.
This is achieved according to the invention by the characterising features of claim 1.
Advantageous configurations of the invention are the subject of the sub-claims.
According to claim 1 it is proposed that the adjustment element is arranged on the upper side of the support in such a way that it is accessible from the upper side of the support during operation of the drawing system. This allows the operating personnel to adjust the drawing system in the closed position of the carrier during operation of the drawing system by means of an operator-friendly accessibility on the side of the drawing system remote from the interior of the machine. Thus, the necessary outlay is reduced compared to the prior art in order, after the basic adjustment of the support because of manufacturing tolerances, to compensate the position deviations occurring which would lead to a positional change in the contact pressure and are to be absolutely avoided for the proper use of the drawing system. Moreover, a readjustment of the drawing system which is in operation can easily be carried out if this were to become necessary, for example due to reground rollers. An operator therefore does not have to busy himself between the drawing system and the machine frame as is the case in the prior art.
Advantageously, the adjustment element can determine the angular position of the carrier on the bearing pin thereof by means of a lever arrangement. This brings about a change in the angular position of the carrier relative to the holding bar with

an unchanged spatial position of the bearing pin. This means that the position of the pairs of rollers with respect to one another remains unchanged during and on completion of the height adjustment. This has the advantage that the readjustment of the pairs of rollers which is absolutely necessary according to the prior art is dispensed with and the height adjustment of the drawing system is also possible even during operation.
The lever arrangement may preferably be configured as a dead centre mechanism which can be actuated with an operating lever.
In this case, the lever arrangement may have a mounting link which carries an abutment of the dead centre mechanism, on which the adjustment element engages which determines the angular position of the mounting link about the bearing pin. The adjustment element is connected for this purpose by a lever to the abutment of the mounting link. The actuation of the adjustment element, in relation to the common bearing pin of the carrier and mounting link, leads to a change in the angular position of the mounting link. The actuation is transmitted by the lever arrangement with equal effect to the carrier, which changes its angular position to the same extent as the mounting link.
The adjustment element may preferably be configured as a screw. The use of a screw as the adjustment element for the height adjustment, depending on the thread pitch of the screw, allows a finely matched height adjustment of the carrier relative to the support because of any manufacturing tolerances after the basic adjustment of the drawing system has taken place or during a position change that occurs caused by reground rollers.
A receiver for the arrangement of the screw head of the adjustment element may be provided here on the upper side of the support, the receiver having a shape corresponding to the outer contour of the screw head to be received. Securing against undesired rotation of the screw, for example owing to vibrations transmitted

to the support during operation of the textile machine, because of the frictional engagement occurring between the screw head and the receiver, is achieved in this manner. The frictional engagement is additionally improved owing to the positive arrangement of the screw head in the receiver, as large contact faces exist between the screw head and the receiver. Moreover, the receiver may be configured in such a way that the screw head can be at least partially countersunk in the support.
Advantageously, a compression spring may be arranged on the screw shank. The preferably conical shape of the compression spring allows self-centring fitting in the support without additional components fixing the position of the compression spring. For this purpose, the compression spring is supported in the region of the receiver on the inner wall of the upper side of the support and on a lever arrangement that is arranged in the interior of the support, which lever arrangement is in operative connection with the carrier and the operating lever. Thus, the carrier located in the opened position, or the operating lever, can be prevented from falling down.
Alternatively, a screw with a planar head may be provided as the adjustment element, a self-locking snap nut being arranged on the screw for the purpose of securing. In this embodiment of the adjustment element, a receiver described above for securing the screw against rotation may be dispensed with as the securing against undesired rotation of the screw is achieved by the self-locking nut. When the screw with a planar screw head is used, it rests on the upper side of the support.
The invention will be described in more detail below with the aid of an embodiment shown in the drawings, in which:
Fig. 1 shows a support and a carrier of a drawing system;
Fig. 2 shows a detailed view of an adjustment element according to Fig. 1;

Fig. 3 shows a detailed view of a second embodiment of an adjustment element according to Fig. 1;
Fig. 4 shows a detailed view of a third embodiment of an adjustment element according to Fig. 1;
Fig. 5 shows a partial sectional view of the carrier in the operating position of the drawing system.
Fig. 1 shows a height-adjustable carrier 2 of a drawing system, which is arranged so as to be pivotable about a bearing pin 3 on a support 1. The support 1 can be stationarily fixed on two holding bars 6 arranged parallel to one another on the machine frame of a textile machine. For this purpose, the support 1 has recesses 7 corresponding to the contour of the holding bars 6 on its side remote from the carrier 2, so the support 1 positively surrounds the holding bars 6, in sections.
The carrier 2 receives, in the conventional manner, top rollers, not shown, in loading elements 8, which, with corresponding bottom rollers of the drawing system, not shown, are used for drawing a fibre band. An operating lever 4 is arranged on the side of the carrier 2 remote from the loading elements 8. The operating lever 4 is used for unlocking and locking when opening or closing the carrier 2. By means of the operating lever 4, the carrier 2 is transferred from a closed position, in which the carrier 2 and the operating lever 4 are arranged substantially parallel to one another, into an open position, in which the carrier 2 and the operating lever 4 are arranged at an angle to one another and vice versa. In the closed position of the carrier 2, the top rollers are pressed against the bottom rollers, while in the open position, the top rollers and lower rollers are spaced apart from one another.
The height-adjustable carrier 2 is adjusted by an adjustment element, which is arranged above the bearing pin 3 on the upper side of the support 1. The arrangement of the adjustment element is such that it is accessible during operation

of the drawing system from the upper side of the support 1. The adjustment element is configured as a screw 5. The screw 5 is in operative connection with the carrier 2 and the operating lever 4 by means of a lever arrangement 16 arranged in the support 1. To adjust the carrier 2, the angular position of the carrier 2 is changed by means of the lever arrangement 16 by rotating the screw 5 in such a way that a height adjustment of the carrier is achieved.
Fig. 2 shows a first embodiment of the adjustment element configured as a screw 5. The screw 5 has a conical screw head 12 here, which is held in a conical receiver 9 which is arranged on the upper side of the support 1 and extends into the interior of the support 1 proceeding from the upper side of the support 1. The receiver 9 is configured in such a way that its dimensions correspond with those of the screw head 12, so a frictional connection exists between the screw head 12 and the receiver 9. A positive connection is achieved by the shape of the receiver 9 adapted to the screw head 12, which leads to a large contact face between the screw head 12 and the receiver 9, so the frictional engagement is improved. A securing of the screw 5 against an undesired rotation during operation of the drawing system, for example because of vibrations, is achieved by the frictional engagement.
A conical compression spring 10, which is supported in the interior of the support 1 on the upper side thereof and on the lever arrangement 16, is arranged on the shank of the screw 5. The compression spring 10, in the opened position of the carrier 2, causes the carrier 2 to be held in its opened position. In addition, the shape of the compression spring 10 brings about a self-centring installation of the compression spring 10 on the inner wall of the support 1 in the region of the receiver 9.
Fig. 3 showed a second embodiment of the adjustment element configured as a screw 5. In this embodiment, the screw 5 has a ball segment-shaped screw head 13, which is also held substantially with frictional engagement in a receiver 9 corresponding to the shape of the screw head 13, so securing of the screw 5 against rotation is achieved. In this embodiment of the adjustment element as well, the

positive connection between the screw head 13 and the receiver 9 brings about an improvement in the frictional engagement because of large contact faces. A conical compression spring 10 is also arranged on the shaft of the screw 5 to hold the carrier 2 in its opened position.
Fig. 4 shows a third embodiment of the adjustment element, which is a screw 11 with a planar screw head, which rests on the upper side of the support 1. To secure the screw 11 against an unintentional rotation, a self-locking snap nut 14 is used. A specially shaped receiver for securing, as described in the preceding embodiments of the adjustment element, is not provided. The screw 11 is in operative connection with the lever arrangement 16 in the interior of the support 1 in the same way as the screw 5 with a conical or spherical screw head. Furthermore, a compression spring 15 surrounding the screw shank of the screw 11 is arranged between the self-locking snap nut 14 and the inner wall of the support 1, the compression spring also being used to prevent the carrier 2 in the opened position from falling down.
Fig. 5 shows the lever arrangement 16 configured as a dead centre mechanism in more detail, the lever arrangement being used to lock the operating lever 4 in the closed position of the carrier 2 and for height adjustment. The lever arrangement 16 has a lever 19, which is articulated by its one end via an abutment 18 to a mounting link 17 and with its other end is connected to the adjustment element in such a way that the lever 19 can be adjusted in the vertical direction by the actuation of the adjustment element. The mounting link 17, like the carrier 2, is pivotably arranged on the bearing pin 3. A first lever arm 20, which is connected by means of a joint pin 22 guided in a slot of the lever arm 20 to a second lever arm 21, is articulated to the abutment 18. The second lever arm 21 is connected to the operating lever 4.
The height adjustment during operation leads to a change in the angular position of the carrier 2 relative to the holding bar 6 with an unchanged spatial position of the bearing pin 3. The angular position is changed by the adjustment element in that, in the closed position of the carrier 2, the angular position of the mounting link 17 of

the lever arrangement 16 is determined by means of the lever 19. This change is also transmitted by the lever arrangement 16 to the carrier 2 and leads to a change in the angular position of the carrier 2, the position of the bearing pin 3 remaining spatially unchanged. The easy accessibility for actuating the adjustment element during operation of the drawing system is to be attributed here to the arrangement according to the invention of the adjustment element on the support 1.

WE CLAIM:
1. Drawing system for a textile machine, comprising a carrier (2) which is configured to receive top rollers and is arranged so as to be pivotable about a bearing pin (3) attached to a support (1), the support (1) being fixed to a holding bar (6) of the textile machine, and in that an adjustment element (5, 11) is present, by means of which the carrier (2) can be adjusted relative to the holding bar (6), characterised in that the adjustment element (5, 11) is arranged on the upper side of the support (1) in such a way that it is accessible during operation of the drawing system from the upper side of the support (1).
2. Drawing system according to claim 1, characterised in that the adjustment element (5, 11) determines the angular position of the carrier (2) on the bearing pin (3) thereof by means of a lever arrangement (16).
3. Drawing system according to either of claims 1 or 2, characterised in that the lever arrangement (16) is configured as a dead centre mechanism, which can be actuated with an operating lever (4).
4. Drawing system according to either of claims 2 or 3, characterised in that the lever arrangement (16) has a mounting link which carries an abutment (18) of the dead centre mechanism, on which the adjustment element (5,11) engages, and determines the angular position of the mounting link (17) about the bearing pin (3).
5. Drawing system according to any one of claims 1 to 4, characterised in that the adjustment element is configured as a screw (5,11).

6. Drawing system according to claim 5, characterised in that a receiver (9) for the arrangement of the screw head of the screw (5, 11) is provided on the upper side of the support (1), the receiver (9) having a shape corresponding to the outer contour of the screw head to be received.
7. Drawing system according to either of claims 5 or 6, characterised in that a compression spring (10) is arranged on the screw shank.
8. Drawing system according to either of claims 5 or 6, characterised in that the screw (11) is configured with a planar head, a self-locking snap nut (14) being arranged to secure the screw (11).

ABSTRACT
The invention relates to a drawing system for a textile machine, comprising a carrier (2) that is configured to hold top rollers and that is mounted to pivot about a bearing axis (3) on a support (1). Said support (1) is fixed to a retaining bar (6) of the textile machine. The system is also equipped with an adjusting element (5, 11), which is used to displace the carrier (2) in relation to the retaining bar (6). The invention is characterised in that the adjusting element (5,11) is mounted on the support (1) in such a way that it causes the position of the carrier to be modified in relation to the retaining bar (6), by altering the pivoting angle of said carrier (2), whilst the spatial position of the bearing axis (3) remains unchanged.
To,
The Controller of Patents,
The Patent office,
Mumbai.
(Fig-1)

DRAWING SYSTEM FOR A TEXTILE MACHINE

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