Yarn guiding and threading mechanisms for use with textile yarn processing machines

In a textile yarn processing machine, such as a two-for-one twister or the like, the combination of:

• a plurality of spindle assemblies mounted in generally side-by-side relationship along the outside of said machine and each including a driven rotating rotor mechanism, a stationary carrier mechanism for carrying a hollow supply package of yarn and having a basket device surrounding the supply package, a balloon limitor device surrounding said basket device and providing a space therebetween, and an elongate yarn passageway extending downwardly through the top of said carrier mechanism along the axis of said spindle assembly and radially outwardly through said rotor mechanism into said space between said basket device and said balloon limitor for the passage of yarn from the supply package downwardly and outwardly through said passageway and upwardly through said space during yarn processing;
• a processed yarn take-up assembly positioned above each of said spindle assemblies for forming a take-up package of processed yarn and including a cradle device having centering discs for carrying a driven take-up bobbin therebetween for the winding of processed yarn thereon, at least one of said centering discs having an oblique surface forming a gap between said surface and the bobbin for receiving and holding the yarn during start-up;
• selectively-operable pneumatic threading mechanisms for being operated to automatically thread a free end of yarn withdrawn from the supply package through said yarn passageway and through said space between said basket device and said balloon limitor during threading-up of said spindle assemblies by creating a suction through the yarn entry portion of said passageway and a positive air stream through the yarn exit portion of said passageway and through said space between said basket device and said balloon limitor;
• yarn guiding and threading means operatively associated with each of said spindle and take-up assemblies for being positioned generally at the front thereof and comprising a generally vertically-extending elongate tube having an air passageway therethrough and a generally funnel-shaped lower end, a suction air conduit connected to the upper end of said tube and leading therefrom to a source of suction for creating a suction through said tube for receiving the free end of yarn passing upwardly from between said basket device and said balloon limitor during pneumatic threading of said spindle assembly at said funnel-shaped lower end and for guiding the free end of yarn upwardly through said tube and into said suction conduit, a slot extending from the outside of said tube to said passageway along substantially the length thereof and positioned on the side thereof facing said spindle assembly for the removal of yarn from said tube, an enlarged pocket portion in the upper end of said tube having an open front facing said spindle and take-up assemblies, a yarn carrier having a hook portion on one end thereof opened toward said spindle and take-up assemblies and having means on the other end thereof mounting said carrier for movement between a first position in which said hook portion is positioned within said pocket portion of said tube and forms a part of said passageway therethrough to a second position closely adjacent the take-up bobbin in said cradle device of said take-up assembly for conveying the yarn from said tube through said slot therein and positioning the yarn within said gap between the take-up bobbin and said centering disc to complete threading-up of said spindle and take-up assemblies to eliminate manual handling of the yarn during threading-up operations, driven delivery roll means operatively positioned with respect to said tube for receipt of the yarn after the free end has passed into said suction conduit for feeding yarn from the supply package during movement of said yarn carrier to its second position and including means driving said delivery roll means at a speed approximately the same as the take-up bobbin carried by said take-up assembly so that the yarn may be conveyed onto the take-up bobbin while moving at a speed approximating the take-up speed of the yarn, means pivotally mounting the upper end of said tube for movement from a first position for receipt of the free end of yarn emerging upwardly from said spindle assembly to a position out of the path of travel of the yarn from said spindle assembly into said suction conduit so that the yarn may be removed through said slot from said tube, means mounting said delivery roll means for pivotal movement from a position out of yarn feeding engagement with each other when said tube is in its first position to a position in engagement with each other for receiving the yarn therebetween and for feeding of the yarn when said tube is moved to its second position, and cutter means carried by said yarn carrier for being selectively actuated when said yarn carrier moves to its second position and the yarn is held in said gap between the bobbin and said centering disc for cutting the yarn so that the free end of yarn extending into said suction conduit may be removed;
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• a trolley mechanism mounted for movement along the outside of said textile yarn processing machine and along the front of each of said spindle and take-up assemblies and carrying said yarn guiding and threading means so that said yarn guiding and threading means may be conveniently positioned in front of a respective spindle assembly when a threading-up operation thereof is desired.

In a textile yarn processing machine having a plurality of spindle assemblies mounted in generally side-by-side relationship along the outside of the machine and each carrying a supply package of yarn for processing of the yarn during passage through said spindle assembly, and a processed yarn take-up assembly positioned generally axially above each of said spindle assemblies for receiving the processed yarn therefrom and for forming a take-up package of processed yarn;

• the combination therewith of yarn guiding and threading means operatively associated with each of said spindle and take-up assemblies for being positioned generally at the front thereof for receiving and guiding the yarn emerging from said spindle assembly during threading-up thereof and for conveying the yarn to said take-up assembly for automatic threading-up thereof to eliminate manual handling of the yarn, said yarn guiding and threading means comprising:
• a generally vertically-extending elongate tube having an air passageway therethrough;
• a source of suction connected to the upper end of said tube for creating a suction through said tube for receiving at the lower end of said tube the yarn from said spindle assembly and for guiding the yarn upwardly through said tube;
• a slot extending from the outside of said tube to said passageway therein along the length thereof and positioned on the side thereof facing said spindle assembly for removal of the yarn from said tube;
• and
• a yarn carrier including means movably mounting said carrier for movement between a first position for engaging the yarn passing through said tube to a second position closely adjacent said processed yarn take-up assembly for conveying the yarn from said tube through said slot therein and positioning the yarn in said take-up assembly to complete threading-up of said spindle assembly and said take-up assembly.

In a textile yarn processing machine, such as a two-for-one twister or the like, having a plurality of spindle assemblies mounted in generally side-by-side relationship along the outside of the machine and each carrying a supply package of yarn for processing of the yarn during passage through said spindle assembly, a processed yarn take-up assembly positioned generally axially above each of said spindle assemblies for receiving the processed yarn therefrom and for forming a take-up package of processed yarn, selectively-operable threading mechanisms operatively associated with each of said spindle assemblies for automatically threading yarn from the supply package through said spindle assembly and emerging from said spindle assembly generally at the top thereof;

• the combination therewith of yarn guiding and threading means operatively associated with each of said spindle and take-up assemblies for being positioned generally at the front thereof for receiving and guiding the yarn emerging from said spindle assembly during threading-up thereof and for conveying the yarn to said take-up assembly for automatic threading-up thereof to eliminate manual handling of the yarn during threading-up operations, said yarn guiding and threading means comprising:
• a generally-vertically elongate tube having an air passageway therethrough and a generally funnel-shaped lower end;
• a suction conduit connected to the upper end of said tube and leading therefrom to a source of suction for creating a suction through said tube for receiving the free end of yarn emerging from said spindle assembly at said funnel-shaped lower end and for guiding the free end of yarn upwardly through said tube and into said suction conduit;
• a slot extending from the outside of said tube to said passageway along substantially the length thereof and positioned on the side thereof facing said spindle assembly for the removal of the yarn from said tube;
• an enlarged pocket portion in the upper end of said tube having an open front facing said spindle and take-up assemblies and forming a part of said yarn passageway through said tube;
• a yarn carrier having a hook portion on one end thereof opened toward said spindle and take-up assemblies and having means on the other end thereof mounting said carrier for movement between a first position in which said hook portion is positioned within said pocket portion of said tube and forms a part of said passageway therethrough to a second position closely adjacent said take-up assembly for conveying the yarn from said tube through said slot therein and positioning the yarn in said take-up assembly to complete threading-up of said spindle and take-up assemblies;
• and
• a trolley mechanism mounted for movement along the outside of said textile yarn processing machine and along the front of each of said spindle and take-up assemblies and carrying said yarn guiding and threading means so that said yarn guiding and threading means may be conveniently positioned in front of a respective spindle assembly and take-up assembly when a threading-up operation thereof is desired.

In a textile yarn processing machine, such as a two-for-one twister or the like, having a plurality of spindle assemblies mounted in generally side-by-side relationship along the outside of the machine and each carrying a supply package of yarn for processing of the yarn during passage through said spindle assembly, a processed yarn take-up assembly positioned generally axially above each of said spindle assemblies for receiving the processed yarn therefrom and for forming a take-up package of processed yarn, selectively-operable threading mechanisms operatively associated with each of said spindle assemblies for automatically threading yarn from the supply package through said spindle assembly and emerging from said spindle assembly generally at the top thereof;

• the combination therewith of yarn guiding and threading means operatively associated with each of said spindle and take-up assemblies for being positioned generally at the front thereof for receiving and guiding the yarn emerging from said spindle assembly during automatic threading-up thereof and for conveying the yarn to said take-up assembly for automatic threading-up thereof to eliminate manual handling of the yarn during threading-up operations, said yarn guiding and threading means comprising:
• a generally vertically-extending elongate tube having an air passageway therethrough and a generally funnel-shaped lower end;
• a suction air conduit connected to the upper end of said tube and leading therefrom to a source of suction for creating a suction through said tube for receiving the free end of yarn passing upwardly from said spindle assembly at said funnel-shaped lower end and for guiding the free end of yarn upwardly through said tube and into said suction conduit;
• a slot extending from the outside of said tube to said passageway along substantially the length thereof and positioned on the side thereof facing said spindle assembly for the removal of yarn from said tube;
• an enlarged pocket portion in the upper end of said tube having an open front facing said spindle and take-up assemblies and forming a part of said yarn passageway therethrough;
• a yarn carrier having a hook portion on one end thereof opened toward said spindle and take-up assemblies and having means on the other end thereof mounting said carrier for movement between a first position in which said hook portion is positioned within said pocket portion of said tube and forms a part of said passageway therethrough to a second position closely adjacent said take-up assembly for conveying the yarn from said tube through said slot therein and positioning the yarn in said take-up assembly to complete threading-up of said spindle and take-up assemblies;
• driven delivery roll means operatively positioned with respect to said tube for receipt of the yarn after the free end has passed into said suction conduit for further feeding yarn from the supply package during movement of said yarn carrier to its second position and including means driving said delivery roll means at a speed approximately the same as the take-up speed of the yarn in said take-up assembly so that the yarn may be conveyed to said take-up assembly while moving at a speed approximating the take-up speed of the yarn;
• means pivotally mounting the upper end of said tube for movement from a first position for receipt of the free end of yarn emerging upwardly from said spindle assembly to a position out of the path of travel of the yarn from said spindle assembly into said suction conduit so that the yarn may be removed through said slot from said tube;
• means mounting said delivery roll means for pivotal movement from a first position out of yarn feeding engagement with each other when said tube is in its first position to a position in engagement with each other for receiving the yarn and for feeding of the yarn when said tube is moved to its second position;
• cutter means carried by said yarn carrier for being selectively actuated when said yarn carrier moves to its second position and the yarn is being fed into said take-up assembly for cutting the yarn so that the free end of the yarn extending into said suction conduit may be removed;
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• a trolley mechanism mounted for movement along the outside of said textile yarn processing machine and along the front of each of said spindle and take-up assemblies and carrying said yarn guiding and threading means so that said yarn guiding and threading means may be conveniently positioned in front of a respective spindle assembly and take-up assembly when a threading-up operation thereof is desired.

Yarn guiding and threading means for use with textile machines processing yarn, such as during a threading-up operation of the textile machine, characterized by a construction adapted for receiving a free end of yarn from a first location in the machine, for guiding the yarn from said first location and for conveying the yarn to a desired second location in the machine, said yarn guiding and threading means comprising:

• an elongate tube having an air passageway therethrough;
• a source of suction connected to one end of said tube for creating a suction through said tube for receiving at the other end of said tube the free end of yarn from the first location in the textile machine and for guiding the yarn through said tube;
• a slot extending from the outside of said tube to said passageway therein along the length thereof and positioned on the side thereof adapted to face the textile machine for subsequent removal of the yarn from said tube;
• an enlarged pocket portion positioned generally at the one end of said tube and having an open front adapted to face the textile machine and forming a part of said yarn passageway through said tube;
• and
• a yarn carrier having a hook portion on one end thereof opened toward the textile machine and having means on the other end thereof mounting said carrier for movement between a first position in which said hook portion is positioned within said pocket portion of said tube and forms a part of said passageway therethrough to a second position at the second location in the textile machine for conveying the yarn from said tube through said slot therein and positioning the yarn at the second location in the textile machine.

Yarn guiding and threading means for use with textile machines processing yarn, such as during a threading-up operation of a textile machine, characterized by a construction for receiving a free end of yarn from a first location in the machine, for guiding the yarn from such first location and for conveying the yarn to a desired second location in the machine, said yarn guiding and threading means comprising:

• an elongate tube having an air passageway therethrough and a generally funnel-shaped end;
• a suction conduit connected to the other end of said tube and leading therefrom to a source of suction for creating a suction through said tube for receiving the free end of yarn from the first location in the textile machine at said funnel-shaped end and for guiding the free end of yarn through said tube and into said suction conduit;
• a slot extending from the outside of said tube to said passageway along substantially the length thereof and positioned on the side thereof adapted to face the textile machine for removal of the yarn from said tube;
• an enlarged pocket portion positioned generally at the other end of said tube having an open front adapted to face the textile machine and forming a part of said yarn passageway through said tube;
• and
• a yarn carrier having a hook portion on one end thereof opened toward the textile machine and having means on the other end thereof mounting said carrier for movement between a first position in which said hook portion is positioned within said pocket portion of said tube and forms a part of said passageway therethrough to a second position at the second location in the textile machine for conveying the yarn from said tube through said slot therein and positioning the yarn at the second location in the textile machine.

Yarn guiding and threading means for use with textile machines processing yarn such as during a threading-up operation of a textile machine, characterized by a construction for receiving a free end of yarn from a first location in the machine, for guiding the yarn from such first location and for conveying the yarn to a desired second location in the machine, said yarn guiding and threading means comprising:

• an elongate tube having an air passageway therethrough and a generally funnel-shaped end;
• a suction conduit connected to the other end of said tube and leading therefrom to a source of suction for creating a suction through said tube for receiving the free end of yarn from the first location in the textile machine at said funnel-shaped end and for guiding the free end of yarn through said tube and into said suction conduit;
• a slot extending from the outside of said tube to said passageway along substantially the length thereof and positioned on the side thereof adapted to face the textile machine for removal of the yarn from said tube;
• an enlarged pocket portion positioned generally at the other end of said tube having an open front adapted to face the textile machine and forming a part of said yarn passageway through said tube;
• a yarn carrier having a hook portion on one end thereof opened toward the textile machine and having means on the other end thereof mounting said carrier for movement between a first position in which said hook portion is positioned within said pocket portion of said tube and forms a part of said passageway therethrough to a second position at the second location in the textile machine for conveying the yarn from said tube through said slot therein and positioning the yarn at the second location in the textile machine;
• driven delivery roll means operatively positioned with respect to said tube for receipt of the yarn after the free end has passed into said suction conduit for further feeding yarn from the first location in the textile machine during movement of said yarn carrier to its second position;
• means pivotally mounting the upper end of said tube for movement from a first position for receipt of the free end of yarn from the first location in the textile machine to a position out of the path of travel of the yarn from such first position into said suction conduit so that the yarn will be removed through said slot from said tube;
• means mounting said delivery roll means for pivotal movement from a first position out of yarn feeding engagement with each other when said tube is in its first position to a second position in engagement with each other for receiving the yarn and for feeding the yarn when said tube is moved to its second position;
• cutter means carried by said yarn carrier for being selectively actuated when said yarn carrier moves to its second position for cutting the yarn so that the free end thereof may be conveyed through said suction conduit for removal and the cut end is free for receipt at the second location in the textile machine;
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• a movable trolley mechanism adapted to be positioned along the outside of the textile machine and carrying said yarn guiding and threading means for conveniently positioning said yarn guiding and threading means at a desired location along the textile machine.