Air operated yarn threading mechanisms in a textile yarn processing machine

Claim 2

In a textile yarn processing machine, such as a twister or the like, having a spindle assembly including a driven rotor mechanism defining a vertically-extending yarn passageway and a horizontally-extending yarn passageway mating with said vertically-extending passageway, a carrier means for carrying a hollow package of yarn and rotatably mounted on said rotor mechanism so that said rotor mechanism may rotate relative thereto, said carried means including a basket device surrounding the package of yarn carried thereby so that yarn withdrawn from the package can form a balloon over said basket device as it passes from said rotor mechanism, a balloon limitor device surrounding said basket device so that the yarn balloon will pass between said basket device and said balloon limitor device in a generally upward vertical path of travel; the improvement of airoperated threading mechanisms for automatically threading yarn pulled from the package through said passageways of said rotor mechanism, said threading mechanisms comprising means for supplying air under pressure through said horizontally-extending yarn passageway for creating a positive air stream therethrough and a negative air stream through said vertically-extending passageway so that said passageways form an aspirating nozzle and so that yarn pulled from the package and placed at the upper end of said vertically-extending passageway will be pulled downwardly therethrOugh by the negative air stream and will be pushed outwardly through the horizontally-extending passageway by the positive air stream for threading thereof, and a deflector means positioned for deflecting the positive air stream and yarn carried thereby emerging from said horizontally-extending passageway of said rotor mechanism from a horizontal path of travel to a vertical path of travel upwardly between said basket device and said balloon limitor device for threading thereof.

Claim 3

In a textile yarn processing machine, as set forth in claim 1, in which said means for supplying air under pressure comprises means for moving into and out of mating engagement with said horizontally-extending passageway of said rotor mechanism for providing air under pressure through said horizontally-extending passageway when a threading operation is desired.

Claim 4

In a textile yarn processing machine, as set forth in claim 1, in which said threading mechanisms further comprise a second aspirating nozzle means positioned above said basket device and said balloon limitor device and having a generally vertically-extending yarn passageway therethrough and means for supplying air under pressure to said passageway to create a negative air flow in the lower portion and a positive air flow in the upper portion of said passageway so that yarn deflected upwardly between said basket device and said balloon limitor device will be pulled into and pushed out of said yarn passageway of said second aspirating nozzle means.

Claim 5

In a textile yarn processing machine, as set forth in claim 3, in which said machine includes a yarn guide pivotally mounted for being positioned directly above said second aspirating nozzle means so that said second nozzle means will push the yarn therethrough for threading and for being moved to a second position away from said second aspirating nozzle means and in axial alignment with said spindle assembly for guiding the yarn in its further path through said machine, and said passageway in said second aspirating nozzle means including a longitudinal slot therein for allowing removal of the yarn from said second aspirating nozzle means when said yarn guide is moved to its second position.

Claim 6

In a textile yarn processing machine, as set forth in claim 3, in which said second aspirating nozzle means is pivotally mounted for moving from the position in which the yarn is received from its path between said basket device and said balloon limitor device to a second position in axial alignment with said spindle assembly for guiding the yarn in its further path through said machine.

Claim 7

In a textile yarn processing machine, as set forth in claim 5, in which said machine further includes a winding roll for winding of the yarn processed by said machine, and in which said threading mechanisms further include a second deflection surface for deflecting the air stream and yarn emerging from said second aspirating nozzle means in the first position thereof into engagement with said winding roll for completion of the threading of the yarn through said machine.

Claim 8

In a textile yarn processing machine, as set forth in claim 1, in which said threading mechanisms further comprise a second aspirating nozzle means positioned above and generally in axial alignment with said spindle assembly and having a generally vertically-extending yarn passageway therethrough and means for supplying air under pressure to said passageway to create a negative air flow in the lower portion and a positive air flow in the upper portion of said passageway, and a second deflection means for deflecting the air stream and yarn emerging from between said basket device and said balloon limitor device for reception by said second aspirating nozzle means so that the yarn will be pulled into and pushed out of the yarn passageway of said second aspirating nozzle means.

Claim 9

In a textile yarn processing machine, as set forth in claim 7, in which said machine further includes a winding roll for winding of the yarn pRocessed by said machine, and in which said threading mechanisms further include a third deflection surface for deflecting the air stream and yarn emerging from said second aspirating nozzle means into engagement with said winding roll for completion of the threading of the yarn through said machine.

Claim 10

In a textile yarn twister, such as a two-for-one twister, having a spindle assembly including a rotatably driven rotor mechanism comprising a whorl, a horizontally-extending reserve disk secured to said whorl for being driven thereby and a generally vertically-extending hollow axle secured to said reserve disk and driven thereby, said reserve disk and said hollow axle defining a vertically-extending yarn passageway extending through said hollow axle and partly through said reserve disk and a horizontally-extending yarn passageway through at least a portion of and out of said reserve disk and mating with said vertically-extending passageway, a carrier means for carrying a hollow package of yarn and rotatably mounted on said rotor mechanism so that said rotor mechanism may rotate relative thereto; the improvement of air-operated threading mechanisms for automatically threading yarn pulled from the package through said passageway in said hollow axle and said reserve disk of said rotor mechanism, the threading mechanism comprising means for supplying air under pressure through said horizontally extending thread passageway for creating a positive air stream therethrough and a negative air stream through said vertically-extending passageway so that said passageways form an aspirating nozzle integrally within said rotor mechanism and so that yarn pulled from the package and placed at the upper end of said vertically-extending passageway will be pulled downwardly therethrough by the negative air stream and will be pushed outwardly through the horizontally-extending passageway by the positive air stream for threading thereof, said means for supplying air under pressure comprising a port formed in said reserve disk and mating with said horizontally-extending yarn passageway therein, an air conduit means extending generally parallel with the axis of said rotor mechanism and including an air actuated diaphragm means for moving said conduit into and out of mating engagement with said port, and manually operated valve means for selectively supplying air to said diaphragm means and to said conduit means for selectively moving said conduit means into mating engagement with said port for providing air under pressure through said horizontally-extending passageway when a threading operation is desired.

Claim 11

In a textile yarn twister, such as a two-for-one twister, having a spindle assembly including a rotatably driven rotor mechanism comprising a whorl, a horizontally-extending reserve disk secured to said whorl for being driven thereby and a generally vertically-extending hollow axle secured to said reserve disk and driven thereby, said reserve disk and said hollow axle defining a vertically-extending yarn passageway extending through said hollow axle and partly through said reserve disk and a horizontally-extending yarn passageway through at least a portion of and out of said reserve disk and mating with said vertically-extending passageway, a carrier means for carrying a hollow package of yarn and rotatably mounted on said rotor mechanism so that said rotor mechanism may rotate relative thereto; the improvement of air-operated threading mechanisms for automatically threading yarn pulled from the package through said passageway in said hollow axle and said reserve disk of said rotor mechanism, the threading mechanism comprising means for supplying air under pressure through said horizontally extending thread passageway for creating a positive air stream therethrough and a negative air stream through said vertically-extending passageway so that said passageways form an aspirating nozzle integrally within said rotor mechanism and so that yarn pulled from the package and placed at the upper end of said vertically-extending passageway will be pulled downwardly therethrough by the negative air stream and will be pushed outwardly through the horizontally-extending passageway by the positive air stream for threading thereof, said means for supplying air under pressure comprising a port formed in said reserve disk and mating with said horizontally-extending yarn passageway therein, an air conduit means extending generally parallel with the axis of said rotor mechanism and including an air actuated diaphragm means for moving said conduit into and out of mating engagement with said port, and manually operated valve means for selectively supplying air to said diaphragm means and to said conduit means for selectively moving said conduit means into mating engagement with said port for providing air under pressure through said horizontally-extending passageway when a threading operation is desired.

Claim 12

In a textile yarn twister, as set forth in claim 9, in which said means for supplying air under pressure comprises a port formed in said reserve disk and mating with said horizontally-extending yarn passageway therein, an air conduit means extending generally parallel with the axis of said rotor mechanism and including an air actuated diaphragm means for moving said conduit into and out of mating engagement with said port, and manually operated valve means for selectively supplying air to said diaphragm means and to said conduit means for selectively moving said conduit means into mating engagement with said port for providing air under pressure through said horizontally-extending passageway when a threading operation is desired.

Claim 13

In a textile yarn twister, as set forth in claim 1, in which said means for supplying air under pressure comprises an air conduit means extending directly through said whorl mechanism and mating with said horizontally-extending yarn passageway in said reserve disk, and manually operated valve means for selectively allowing the flow of air under pressure through said conduit means and into said horizontally-extending yarn passageway when a threading operation is desired.