US3830051A

US3830051A - Yarn guiding flyer mechanism for a textile yarn processing machine

Info

Publication number: US3830051A
Application number: US00409033A
Authority: US
Inventors: H Veltges
Original assignee: Palitex Project Co GmbH
Current assignee: Palitex Project Co GmbH
Priority date: 1973-04-02
Filing date: 1973-10-24
Publication date: 1974-08-20
Anticipated expiration: 1991-08-20
Also published as: ES418933A1; BR7308144D0; AR202813A1; CH565259A5; DE2316331B1; DE2316331C2; GB1384500A; FR2223485B1; FR2223485A1; IT1010705B; JPS49134943A; JPS5330817B2; CS175374B2

Abstract

An improved yarn guiding flyer mechanism in a textile processing machine having a spindle assembly which includes a carrier mechanism having a hollow carrier member for supporting thereon a hollow supply package of yarn to be processed and a hollow yarn entry tube carried within the carrier member and extending axially outwardly therefrom for receiving the yarn from the supply package and providing an axially extending passageway for the yarn therethrough. The improved yarn guiding flyer mechanism is characterized by being constructed for ease in threading of the yarn therethrough when threading of the yarn through the spindle assembly is necessary. The flyer mechanism includes an elongate medial body portion, an eye member connected with one end of the body portion for receiving and passing the yarn therethrough, and a mounting portion connected to the other end of the body portion for mounting the flyer mechanism on the yarn entry tube for rotation relative thereto and for pivotal movement between a yarn processing position in which the flyer mechanism extends generally radially outwardly from the yarn entry tube and a yarn threading position in which the flyer mechanism extends generally axially of the yarn entry tube and the eye member is axially aligned with the passageway of the yarn entry tube for threading of the yarn easily through the eye member when yarn is threaded through the yarn entry tube passageway. The length of the yarn entry tube above the supply package and the length of the flyer mechanism are matched so that no substantial gap is presented between the outer end of the yarn entry tube and the eye member when the flyer mechanism is in its yarn threading position for ease in threading.

Description

, United States Patent [191 Veltges YARN GUIDING FLYER MECHANISM FOR A TEXTILE YARN PROCESSING MACHINE [75] Inventor: Helmut Veltges, Krefeld, Germany [73] Assignee: Palitex Project Company GmbH,

Krefeld, Germany [22] Filed: Oct. 24, 1973 [21] Appl. No.: 409,033

[30] Foreign Application Priority Data Primary Examiner-John Petrake's Attorney, Agent, or F irm-Parrot, Bell, Seltzer, Park & Gibson [5 7 ABSTRACT An improved yarn guiding flyer mechanism in a textile processing machine having a spindle assembly which includes a carrier mechanism having a hollow carrier [451 Aug. 20, 1974 member for supporting thereon a hollow supply package of yarn to be processed and a hollow yarn entry tube carried within the carrier member and extending axially outwardly therefrom for receiving the yarn from the supply package and providing an axially extending passageway for the yarn therethrough. The improved yarn guiding flyer mechanism is characterized by being constructed for ease in threading of the yarn therethrough when threading of the yarn through the spindle assembly is necessary. The flyer mechanism includes an elongate medial body portion, an eye member connected with one end of the body portion for receiving and passing the yarn therethrough, and a mounting portion connected to the other end of the body portion for mounting the flyer mechanism on the yarn entry tube for rotation relative thereto and for pivotal movement between a yarn processing position in which the flyer mechanism extends generally radially outwardly'from the yarn entry tube and a yarn threading position in which the flyer mechanism extends generally axially of the yarn entry tube and the eye member is axially aligned with the passageway of the yarn entry tube for threading of the yarn easily through the eye member when yarn is threaded through the yarn entry tube passageway. The length of the yarn entry tube above the supply package and the length of the flyer mechanism are matched so that no substantial gap is presented between the outer end of the yarn entry tube and the eye member when the flyer mechanism is in its yarn threading position for ease in threading.

9 Claims, 11 Drawing Figures YARN GUIDING FLYER MECHANISM FOR A TEXTILE YARN PROCESSING MACHINE This invention relates to an improved yarn guiding flyer mechanism, constructed for ease in threading of the yarn therethrough, for use in a textile yarn processing machine having spindle assemblies for the process ing of yarn.

In the operation of textile yarn processing machines, such as twisters, spinning frames or the like, and in particular two-for-one twisters, yarn is processed by leading the yarn from a supply package of yarn supported on a hollow carrier mechanism having a hollow carrier member for supporting the package of yarn to be processed and a hollow yarn entry tube carried within the carrier member and extending outwardly therefrom axially of the supply package supported thereon for receiving the yarn from the supply package and providing an axially extending passageway for the yarn therethrough for processing by the spindle assembly. The spindle assemblies often include yarn guiding flyer mechanisms for receiving and guiding the yarn being processed from the supply package to the yarn entry tube to aid in lifting of the yarn and guiding it from the supply package.

When the yarn being processed has broken or the supply package of yarn has been exhausted, operation of the spindle assembly is stopped and the yarn must be threaded through the spindle assembly including threading of the yarn from the supply package, through the flyer mechanism and into the yarn entry tube passageway and then through the remainder of the spindle assembly.

These yarn processing machines, particularly the two-for-one twisters, may include-pneumatically operated yarn threading mechanisms, in accordance with US. Pat. No. 3,371,478, issued May 8, 1973, and assigned to the assignee of the present invention. These pneumatically operated threading devices create a negative air stream through the yarn entry tube passageway so that the yarn may be pulled from the supply package and placed at the entrance to this yarn entry tube passageway to be sucked into and pneumatically threaded through the spindle assembly.

In the case of a yarn guiding flyer mechanism, which is usually mounted on the yarn entry tube and extends radially outwardly therefrom, the yarn must be manually threaded through the flyer mechanism prior to placing it at the entrance of the yarn entry tube for automatic, pneumatic threading through the spindle assembly. This operation presents problems in the threading of the spindle assembly and requires manual threading when pneumatically operated threading devices are provided. Even without the pneumatically operated, automatic threading devices, the yarn must be threaded through the flyer mechanism and then through the yarn entry tube which requires a time consuming manual operation due to the tortuous path of the yarn as it is threaded.

While pivotally mounted yarn guiding flyer mechanisms have heretofore been proposed in which the flyer mechanism can be pivoted from its radial position with respect to the yarn entry tube to a generally axial position with respect to the yarn entry tube, there is always present a gap between the end of the flyer mechanism and the inlet of the yarn entry tube, which varies with the radius of the supply package. This results in the requirement of manual threading of the yarn through the flyer mechanism, even in its axial position, inasmuch as the negative stream created by the pneumatically operated threading mechanisms through the yarn entry tube passageway will not extend to the end of the flyer mechanism because of the gap between these devices.

Accordingly, it is the object of this invention to provide an improved yarn guiding flyer mechanism which is constructed for ease in threading of the yarn therethrough when threading of the yarn through the spindle assembly of a yarn processing machine is necessary and which eliminates the problems presented with prior constructions of yarn guiding flyer mechanisms.

In accordance with this invention, it has been found that the above object may be accomplished by providing, in a textile yarn processing machine, such as a twister, spinning frame or the like, having a spindle assembly for the processing of yarn which includes a carrier mechanism having a hollow carrier member for supporting thereon a hollow supply package of yarn to be processed and a hollow yarn entry tube carried within the carrier member and extending outwardly therefrom axially of the supply package supported thereon for receiving the yarn from the supply package and providing an axially extending passageway for the yarn therethrough for processing by the spindle assembly; the combination therewith of an improved yarn guiding flyer mechanism for receiving and guiding the yarn being processed fro the supply package to the yarn entry tube and being characterized by being constructed for ease in threading of the yarn therethrough when threading of the yarn through the spindle assembly is necessary.

The flyer mechanism comprises an elongate medial body portion, an outer free end portion connected with one end of the body portion and comprising a hollow eye member for receiving and passing the yarn therethrough, and a mounting portion connected with the other end of the body portion. The mounting portion comprises means mounting the flyer mechanism on the yarn entry tube for rotation relative thereto and for pivotal movement between a yarn processing position in which the flyer mechanism extends generally radially outwardly from the yarn entry tube and the supply package of yarn for receiving and guiding the yarn during processing and a yarn threading position in which the flyer mechanism extends generally axially of the yarn entry tube and the supply package of yarn and the eye member is axially aligned with the passageway of the yarn entry tube for threading of the yarn easily through the eye member when the yarn is threaded through the yarn entry tube passageway.

The length of the yarn entry tube above the supply package of yarn and the length of the flyer mechanism are matched so that no substantial gap is presented between the outer end of the yarn entry tube and the eye member when the flyer mechanism is in its yarn threading position for ease in threading, particularily with the use of pneumatic threading devices.

Preferably, the eye member of the yarn guiding flyer mechanism is in the form of a closed, hollow eye for improved guiding of the yarn. Normally, flyer mechanisms have open eyes, but these do not perform well in respect to running off of the yarn from the supply package, as do closed eyes.

In the preferred construction according to this invention, the body portion of the flyer mechanism is slightly angled to form an obtuse angle and the eye member extends generally transversely outwardly at a slight angle from one side of the body member so as to form an acute angle with the body member. This allows the flyer mechanism, in the yarn threading position thereof, to be positioned slightly overcenter with respect to the longitudinal axis of the yarn entry tube and the eye member will be positioned generally congruently with the yarn entry tube passageway.

The body portion of the flyer mechanism may comprise two elongate members connecting the eye member and the mounting portion and being spaced-apart a distance slightly greater than the outside diameter of the yarn entry tube and positioned for passing on the outside of the yarn entry tube when the flyer mechanism is moved to its yarn threading position, and a connecting web member connecting the elongate members along at least a portion of their length and positioned for abutting the yarn entry tube for aiding in holding the flyer mechanism in the yarn threading position thereof.

Preferably, the mounting portion of the flyer mechanism comprises a segmentally-divided, hollow sleeve having internal, oppositely directed, generally U- shaped, rounded projections in the upper and lower portions thereof and oppositely extending openings in each of the sides thereof. These projections and openings are arranged for providing pivotal movement of the flyer mechanism between the yarn processing position and the yarn threading position while defining channels for the passage of the yarn entry tube through the mounting sleeve in each position of the flyer mechanism.

In an alternative embodiment of this invention, the mounting portion of the flyer mechanism comprises inwardly facing swivel spigot members secured to the inside surfaces of each of the two elongate body members and a hollow sleeve member rotatably positioned around the yarn entry tube and having support slots on opposite sides of the outer surfaces thereof for receiving the swivel spigots for pivotally mounting the flyer mechanism on the yarn entry tube. In this embodiment, the yarn entry tube includes means for mounting it for axial movement from a yarn processing position outwardly to a yarn threading position when the flyer mechanism has been moved to the threading position so that the length of the yarn entry tube above the supply package of yarn is extended to match the length of the flyer mechanism. The yarn entry tube includes abutment means and the body elongate members include cam members adjacent the swivel spigots for contacting the abutment means and moving the yarn entry tube axially outwardly to its threading position when the flyer mechanism is moved to its threading position.

In this alternative embodiment, the spindle assembly may include a yarn brake tensioning mechanism in accordance with US. Pat. No. 3,490,221, issued Jan. 20, 1970, and assigned to the assignee of the present invention. This yarn brake tensioning mechanism is carried within the carrier mechanism for tensioning the yarn as it passes through the carrier mechanism during processing and is movable between a tensioning position in contact with the yarn and a threading position out of contact with the yarn. When this yarn brake tensioning mechanism is utilized, the yarn entry tube may include means connecting it with the yarn tensioning mechanism for moving the yarn tensioning mechanism to its threading position when the yarn entry tube is moved axially outwardly to its yarn threading position. The yarn entry tube may also include means biasing the entry tube into its yarn processing position.

Some of the objects and advantages of this invention having been stated, other objects and advantages will appear as the description proceeds, when taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a perspective view, partially broken away, of a portion of one spindle assembly of a textile yarn processing machine utilizing the improved yarn guiding flyer mechanism of this invention;

FIG. 2 is an enlarged elevational view, partly in section, of a portion of the spindle assembly of FIG. 1 with the flyer mechanism positioned in its threading position;

FIG. 3 is a view, like FIG. 2, with the flyer mechanism positioned in its yarn processing position;

FIG. 4 is a top plan view of the mechanisms of FIG.

FIG. 5 is a perspective view of the flyer mechanism in accordance with this invention;

FIG. 6 is a sectional view, taken generally along the line 6-6 of FIG. 5;

FIG. 7 is a view, like FIG. 2, illustrating an alternate embodiment of this invention and with the yarn guiding flyer mechanism in its threading position;

FIG. 8 is a view, like FIG. 7, with the yarn guiding flyer mechanism in its yarn processing position;

FIG. 9 is a top plan view of the mechanisms of FIG.

FIG. 10 is an exploded perspective view of the alternative form of the flyer mechanism in accordance with this invention; and

FIG. 11 is a side elevational view of the alternative form of the mechanisms according to this invention.

While the drawings and specific description to follow will be related to a two-for-one twister yarn processing machine, which is the preferred form of apparatus having the improved flyer mechanism in accordance with this invention thereon, it is to be understood that the improved flyer mechanism of this invention could be utilized on other types of yarn processing machines.

Referring now to the drawings, there is illustrated in FIG. 1, a schematic, perspective view of a single spindle assembly station, generally indicated at 10, of a twofor-one twister yarn processing machine. It is to be understood that a plurality of these spindle assembly stations 10 are provided in which the spindle assembly stations are arranged in side-by-side relationship in two rows along the outsides of the machine. A full illustration and description of the entire two-for-one twister yarn processing machine is not given herein and is not believed to be necessary for an understanding of the present invention, the operation and structure of such a two-for-one twister being well understood by those with ordinary skill in the art.

Generally, each of the spindle assemblies 10 comprise a rotatably driven rotor mechanism, generally indicated at 11, which includes a whorl 12 suitably rotatably mounted on twister frame portion 13 and rotated by continuous drive belt 14. The rotor mechanism 11 further includes a horizontally extending reserve disc 16 secured to the whorl 12 for being driven thereby and a generally vertically extending hollow axle device (not shown) extending upwardly from the reserve disc 16.

The reserve disc 16 and hollow axle device define a vertically extending passageway 20 extending through the hollow axle device and partly through the reserve disc 16 and a horizontally extending yarn passageway 21 extending through at least a portion of and out of the reserve disc 16 and mating with the vertically extending passageway 20.

The spindle assembly further includes a carrier mechanism 25 for carrying a hollow package P of yarn Y and being rotatably mounted on the rotor mechanism 11 by bearings (not shown) so that the'rotor mechanism 11 may rotate relative to the carrier mechanism 25. The carrier mechanism 25 includes a basket device 26 which surrounds the package P of yarn Y. The carrier mechanism 25 may also include a hollow yarn package carrier member 28 carried by the carrier mechanism 25 and onto which the hollow package P of yarn Y is supported. The hollow carrier member 28 may also include a hollow yarn entry tube 30 carried within the carrier member 28 and extending outwardly therefrom axially of the supply package P supported thereon for receiving the yarn Y from the supply package P and providing an axially extending passageway 31 for receiving and allowing passage of the yarn Y therethrough and mating with vertically extending passageway 20 through the hollow axle device and the reserve disc 16.

Spindle assembly 10 further includes a balloon limitor device 33 surrounding the basket device 26 so as to contain the balloon of yarn Y formed on the outside of the basket device 26. A yarn guide eyelet 40 is positioned above and in axial alignment with the hollow axle and the yarn entry tube 30. There is further provided a pre-take-up roll 42, a yarn traversing mecha nism 43, a take-up or package roll 44 upon which the yarn Y is wound after being processed or twisted by the spindle assembly 10. Package roll 44 is rotated by friction drive roll 45. There is also provided a yarn guiding flyer mechanism 50 rotatably mounted on the yarn entry tube 30 for receiving the yarn Y from the package P and guiding the yarn to the yarn entry tube 30 and the passageway 31 therein. These flyer mechanisms 50 conventionally aid in lifting the yarn Y from the package P for passage through the yarn processing spindle assembly 10.

With the above described mechanisms, the yarn Y passes from the package P through the flyer mechanism 50, through the yarn entry tube 30 and its passageway 31, through the vertically extending yarn passageway 20 in the hollow axle device and reserve disc device 16, through the horizontally extending passageway 21 in reserve disc device 16, and outof the reserve disc 16 in a horizontal direction. The yarn then passes upwardly between the basket device 26 and the balloon limitor device 33 and forms a balloon of yarn Y which is contained by the balloon limitor device 33. The yarn then passes through yarn guide eyelet 40, over pretake-up roll 42 and its traversed by the traversing mechanism 43 onto the package roll 44 to complete its travel through the respective spindle assembly. As is well understood by those with ordinary skill in the art, a two-for-one twist is inserted in the yarn Y during the above noted path of travel. a

The drive belt 14 is maintained in engagement with the whorl 12 of spindle assembly 10 by means of a pivotally mounted roll during yarn processing by the spindle assembly 10. When the yarn Y breaks or the supply package P of yarn is exhausted and it is desired 1 to stop operation of the rotor mechanism 11 of the spindle assembly 10, the roll 15 is moved away from the belt 14 which allows it to become disengaged with the whorl 12 at a selected spindle assembly 10 and allows the rotor mechanism 11 of that spindle assembly 10 to stop.

The spindle assembly 10 may be provided with pneumatically operated, yarn threading mechanisms for threading the yarn Y through the spindle assembly 10 when rethreading of the spindle assembly is desired, due to yarn breakage or exhausting of the supply package P. Such rethreading mechanisms are described in the above mentioned US. Pat. No. 3,73 L478 and reference may be had to that patent for full disclosure of these mechanisms. Generally, these pneumatically operated yarn threading mechanisms include, inter alia, an air channel 52 formed in the reserve disc 16 of the rotor mechanism 11 and which includes a port (not shown) on the underside of the reserve disc 16 of the rotor mechanism 11 for selectively receiving air under pressure into the air channel 52 from any convenient source of supply. The air channel 52 communicates with thehorizontally extending yarn passageway 21 in the reserve disc 16 of the rotor mechanism 11 so that, when the air channel 52 receives air under pressure, it will cause a positive air stream through the horizontally extending air passageway 21 and a negative air stream through the vertically extending yarn passageway 20. A negative air stream will also be created through the yarn passageway 31 of the yarn entry tube 30.

For rethreading of the yarn Y through the spindle assembly 10, the yarn Y may be placed at the entrance to the yarn entry tube 30 and will be sucked into the pulled through the yarn entry tube 30 and the vertically extending yarn passageways 31 and 20 by negative air pressure and the yarn will then be forced through and out of the horizontally-extending yarn passageway 21 by a positive air stream. Further details of automatic, pneumatic threading of the yarn Y through the remainder of the spindle assembly 10 may be had from the above-mentioned United States Patent.

Thus it may be seen, that when the yarn Y is broken or the supply package P of yarn is exhausted, and it is required to thread-up the spindle assembly 10 for continued operation of the yarn processing machine, the yarn Y would normally have to be manually pulled from a supply package P, manually threaded through the yarn guiding flyer mechanism 50 and then inserted at the top of yarn entry tube 30 for automatic threading through the spindle assembly 10 by the abovedescribed pneumatically operated yarn threading mechanisms. In order to facilitate this threading operation and to eliminate the necessity for manual threading of the yarn Y through the flyer mechanism 50, an improved construction of such flyer mechanism 50 is provided in accordance with this invention, as follows.

In FIGS. 1-6 of the drawings, a first embodiment of an improved yarn guiding flyer mechanism 50 is illustrated and in FIGS. 7-l1, an alternative embodiment is illustrated. These two embodiments include like features and where like features are included, they will not be described with respect to each embodiment and like reference numerals will be applied thereto in the drawmgs.

Referring firstly to the embodiment of FIGS. 1-6, the flyer mechanism 50 comprises an elongate, medial body portion 60, an outer free end portion in the form of a hollow eye member 61 for receiving and passing the yarn therethrough, and a mounting portion 63 connected with the other end of the body portion 60 for mounting the flyer mechanism 50 on the yarn entry tube 30 for rotation relative thereto and for pivotal movement between a yarn processing position (as shown in FIG. 3) in which the flyer mechanism 50 extends generally radially outwardly from the yarn entry tube 30 and the supply package P of yarn Y for receiving and guiding the yarn Y from the supply package P to the yarn entry tube 30 during processing and a yarn threading position (as shown in FIG. 2) in which the flyer mechanism 50 extends generally axially of the yarn entry tube 30 and the supply package P of yarn Y and the eye member 61 is axially aligned with the passageway 31 of the yarn entry tube 30 for threading of the yarn Y easily through the eye member 61 when the yarn is threaded through the yarn entry tube passageway 31.

The length of the yarn entry tube 30 is matched with the length of the flyer mechanism 50 so that when the flyer mechanism 50 is moved to its yarn threading position (as shown in FIG. 2) no substantial gap is presented between the outer end of the yarn entry tube 30 and the eye member 61 of the flyer mechanism 50 (as shown in FIG. 2). This enables the negative air stream created through the yarn passageway 31 by the pneumatically operated yarn threading mechanisms, described above, to be created also through the eye member 61 of the flyer mechanism 50.

The flyer mechanism 50 is preferably a closed, hollow eye for providing improved removal of the yarn Y from the package P, guiding of the yarn Y to the yarn entry tube 30 and pneumatic threading of the yarn Y through the eye member 61, when positioned in its yarn threading position.

As shown particularly in FIGS. 3 and 5, the body portion 60 of the flyer mechanism 50 is slightly angled in an upward direction to form an obtuse angle and the eye member 61 extends generally transversely outwardly and downwardly at a slight angle from the bottom side of the body member 60 so as to form an acute angle with the body member. This enable the yarn flyer mechanism 50, when pivoted to its yarn threading position (as shown in FIG. 2) to be positioned slightly overcenter with respect to the longitudinal axis of the yarn entry tube 30 and the package P of yarn Y and the eye member 61 to be positioned generally congruently with the yarn entry tube passageway 31. This over-center position aids in retaining the flyer mechanism 50 in its yarn threading position (as shown in FIG. 2).

The body portion 60 of the flyer mechanism 50 comprises two parallel,

elongate members

70 and 71 connecting the eye member 61 and the mounting portion 63 and being spaced-apart a distance slightly greater than the outside diameter of the yarn entry tube 30 and positioned for passing on the outside of the yarn entry tube (as shown in FIG. 2) when the flyer mechanism 50 is moved to the yarn threading position thereof (as shown in FIG. 2). The body portion 60 further includes a connecting web member 73 connecting the

elongate members

70 and 71 along at least a portion of their length and positioned for abutting the yarn entry tube 30 for aiding in holding the flyer mechanism 50 in the yarn threading position when it is moved to the yarn threading position.

The mounting portion 63 of the flyer mechanism 50 comprises a segmentally divided, hollow sleeve having internal, oppositely-directed, generally U-shaped,

rounded projections

76 and 77 in the upper and lower portions thereof and oppositely extending

openings

78 and 79 in each of the sides thereof. The

projections

76, 77 and the

openings

78, 79 are arranged (as shown in FIGS. 2-6) for providing pivotal movement of the flyer mechanism between the yarn processing position (as shown in FIG. 3) and a yarn threading position (as shown in FIG. 2) while defining channels for the passage of the yarn entry tube 30 through the mounting sleeve 75 in each position of the flyer mechanism (as shown in FIGS. 2 and 3). The

projections

76, 77 and internal sides of the sleeve 75 are smooth so as to provide bearing surfaces to allow rotation of the flyer mechanism 50 when positioned in the yarn processing position (as shown in FIG. 3).

Referring now to the alternative embodiment of this invention as illustrated in FIGS. 7-11, the mounting portion 63 of the flyer mechanism 50 comprises inwardly facing swivel spigots 80, 81 secured to the inside surfaces of the two

elongate body members

70, 71 and a hollow sleeve member 74 rotatably positioned around the yarn entry tube 30 and having

support slots

85, 86 on opposite sides of the outer surface thereof for receiving the swivel spigots 80, 81 for pivotally mounting the flyer mechanism 50 on the yarn entry tube.

The yarn entry tube 30 is preferably mounted for axial movement from a yarn processing position (as shown in FIG. 8) to a yarn threading position (as shown in FIG. 7). The yarn entry tube 30 moves axially outwardly from the yarn processing position to the yarn threading position so as to eliminate any gap between the end of the yarn entry tube 30 and the eye member 61 of the flyer mechanism 50, for purposes described above. For this axial movement, the yarn entry tube 30 is slideably mounted in the yarn carrier member 28 and includes a flange 88 on the bottom end thereof which abuts a stop 89 extending inwardly from the inside hollow surfaces of the yarn carrier member 28. The yarn entry tube 30 is biased into the yarn processing position (as shown in FIG. 8) by a spring 90 carried around the lower end of the yarn entry tube 30 and extending between the flange 88 and the top inside surface of the carrier member 28.

The

elongate members

70, 71 includes

cam members

93, 94 on the inside surfaces thereof and inwardly of the spigot members 80, 81. These

cam members

93, 94 are positioned for contacting an abutment means when the flyer mechanism 50 is pivoted from its yarn processing position (FIG. 8) to the yarn threading position (FIG. 7) for axially moving the yarn entry tube 30 against the bias of spring 90 outwardly to its yarn threading position (FIG. 7) for closing the gap between the end of the yarn entry tube 30 and the eye member 61 of the flyer mechanism 50.

This abutment means on the yarn entry tube 30 comprises a flange 100, a slideably mounted

housing

101 and 102 carried around the yarn entry tube 30 and being connected by a suitable threading means. A compression spring 103 is positioned within the

housing

101, 102 around the yarn entry tube 30 and contacts a flange 105 mounted on the end of sleeve member 74. The sleeve member 74 comprises a lower flange 110,

9 a rectangular block 111 having the

slots

85, 86 therein and a cylindrical extension 112 extending into the housing 101. By the above arrangement (as shown in FIGS. 7 and 8), when the flyer mechanism 50 is pivoted from its yarn processing position (FIG. 8) to its yarn threading position (FIG. 7), the

cam members

93, 94 will contact the bottom of

composite housings

101, 102

sliding the housing against the bias of spring 103 upwardly along the yarn entry tube 30 to contact flange 100 and move the flange 100 .and yarn entry tube 30 from its processing position (FIG. 8) to its threading position (FIG. 7) which moves the yarn entry tube against the bias of spring 90 axially outwardly to close the gap between the end of the yarn entry tube 30 and the eye member 61 of flyer mechanism. The above described abutment means of this embodiment acts as a shock absorbing device to smoothly allow movement of the yarn entry tube 30 axially outwardly from its yarn processing position to its yarn threading position.

In the embodiment of FIGS. 710, the

elongate body members

70, 71 are widened in the portion thereof closest to the yarn entry tube 30 so as to pass around the shock absorbing device 101-103.

The spindle assembly may include a yarn brake tensioning mechanism, generally indicated at 115, in accordance with prior US. Pat. No. 3,490,221, issued Jan. 20, 1970, and assigned to the assignee of the present invention. For complete details of this yarn brake tensioning mechanism, reference may be had to this prior United States Patent. Generally, the yarn brake tensioning 115 provides a tension on the yarn Y as it passes through the hollow yarn carrier member 28 and into the above described vertically extending passageway and horizontally-extending passageway 21 for properly controlling the tension on the yarn during yarn processing. The yarn brake tensioning mechanism 115 includes generally a partition 119 extending angularly into the path of the yarn as it passes through the carrier mechanism 28 and acts as a braking or tensioning surface. This mechanism further includes a movable braking member 120 pivotally mounted at 121 medially of a lever mechanism 122. The other end of the lever 122 engages in a slot in an extension 123 from flange 88 on the end of yarn entry tube 30. The movable brake tensioning member 120 is held into braking tensioning engagement with the fixed braking member 119 for tensioning of the yarn passing therebetween by a magnet 125.

When threading of the yarn Y through the spindle assembly 10 is desired and the flyer mechanism 50 is moved from its processing position (FIG. 8) to its threading position (FIG. 7), the

cam members

93, 94 will act on the above described abutment means 100 through the devices 101-103 to raise the yarn entry tube axially outwardly to its threading position (FIG. 7) which will cause the flange 88 on the end of the yarn entry tube 30 to raise and also raise the extension 123 which will pivot the lever arm 122 to move the movable braking member 120 against the influence of magnet 125 from its tensioning position (FIG. 8) in contact with the yarn Y to its threading position (FIG.

7) out of contact with the yarn Y for ease in threading of the yarn Y through the spindle assembly 10.

Thus, it may be seen, that this invention has provided several embodiments of an improved yarn guiding flyer mechanism which is constructed to allow easy threading of the yarn therethrough when threading of a spindle assembly of a yarn processing machine is desired and which overcomes the problems presented with prior yarn guiding flyer mechanisms.

In the drawings and specification, there have been set forth preferred embodiments of this invention and, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation.

That which is claimed is:

1. In a textile yarn processing machine, such as a twister, spinning frame of the like, having a spindle assembly for the processing of yarn which includes a carrier mechanism having a hollow carrier member for supporting thereon a hollow supply package of yarn to be processed and a hollow yarn entry tube carried within said carrier member and extending outwardly therefrom axially of the supply package supported thereon for receiving the yarn from the supply package and providing an axially extending passageway for the yarn therethrough for processing by said spindle assembly; the combination therewith of:

an improved yarn guiding flyer mechanism for receiving and guiding the yarn being processed from the supply package to the yarn entry tube and being characterized by being constructed for ease in threading of the yarn therethrough when threading of the yarn through said spindle assembly is necessary;

said flyer mechanism comprising an elongate medial body portion, an outer free end portion connected with one end of said body portion and comprising a hollow eye member for receiving and passing the yarn therethrough, and a mounting portion connected with the other end of said body portion and comprising means mounting said flyer mechanism of said yarn entry tube for rotation relative thereto and for pivotal movement between a yarn processing position in which said flyer mechanism extends generally radially outwardly from said yarn entry tube and the supply package of yarn for receiving and guiding the yarn during processing and a yarn threading position in which said flyer mechanism extends generally axially of said yarn entry tube and the supply package of yarn and said eye member is axially aligned with said passageway of said yarn entry tube for threading of the yarn easily through said eye member when the yarn is threaded through said yarn entry tube passageway; and

the length of said yarn entry tube above the supply package of yarn and the length of said flyer mechanism being matched so that no substantial gap is presented between the outer end of said yarn entry tube and said eye member when said flyer mechanism is in the yarn threading position for ease in threading.

2. In a textile yarn processing machine, as set forth in claim 1, in which said eye member comprises a closed, hollow eye for improved guiding of the yarn.

3. In a textile yarn processing machine, as set forth in claim 1, in which said body portion of said flyer mechanism is slightly angled to form an obtuse angle and said eye member extends generally transversely outwardly at a slight angle from one side of said body member so as to form an acute angle with said body member, so that said flyer member in the yarn threading position thereof will be positioned slightly overcenter with respect to the longitudinal axis of said yarn entry tube and said eye member will be positioned generally congruently with said yarn entry tube passageway.

4. In a textile yarn processing machine, as set forth in claim 3, in which said body portion of said flyer mechanism comprises two elongate members connecting said eye member and said mounting portion and spaced-apart a distance slightly greater than the outside diameter of said yarn entry tube and positioned for passing on the outside of said yarn entry tube when said flyer mechanism is moved tothe yarn threading position thereof, and a connecting web member connecting said elongate members along at least a portion of their length and positioned for abutting said yarn entry tube for aiding in holding said flyer mechanism in the yarn threading position thereof.

5. In a textile yarn processing machine, as set forth in claim 1, in which said mounting portion of said flyer mechanism comprises a segmentally divided, hollow sleeve having internal, oppositely directed, generally U-shaped, rounded projections in upper and lower portions thereof and oppositely extending openings in each of the sides thereof, said projections and said openings being arranged for providing pivotal movement of said flyer mechanism between the yarn processing position and the yarn threading position while defining channels for the passage of said yarn entry tube through said mounting sleeve in each position of said flyer mechanism.

6. In a textile yarn processing machine, as set forth in claim 1, in which said body portion of said flyer mechanism comprises two elongate members connecting said eye member and said mounting portion and spaced-apart a distance slightly greater than the outside diameter of said yarn entry tube and positioned for passing on the outside of said yarn entry tube when said flyer mechanism is moved to the yarn threading position thereof; and in which said mounting portion of said flyer mechanism comprising an inwardly facing swivel elongate body members and a hollow sleeve member rotatably positioned around said yarn entry 'tube and having support slots on opposite sides of the outer surface thereof for receiving said swivel spigots for pivotaly mounting said flyer mechanism on said yarn entry tube.

7. In a textile yarn processing machine, as set forth in claim 6, in which said yarn entry tube includes means mounting said yarn entry tube for axial movement from a yarn processing position outwardly to a yarn threading position when said flyer mechanism has been moved to its threading position so that the length of said yarn entry tube above the supply package of yarn is extended to match the length of said flyer mechanism, in which said yarn entry tube further includes abutment means, and in which said body elongate members include cam members adjacent said swivel spigots for contacting said abutment means and moving said yarn entry tube radially outwardly to its threading position when said flyer mechanism is moved to its threading position.

8. In a textile yarn processing machine, as set forth in claim 7, in which said spindle assembly includes a yarn brake tensioning mechanism carried within said carrier mechanism for tensioning the yarn as it passes through said carrier mechanism during processing and being movable between a tensioning position in contact with the yarn and a threading position out of contact with the yarn, and in which said yarn entry tube includes means connecting it with said yarn tensioning mechanism for moving said yarn tensioning mechanism to its threading position when said yarn entry tube is moved axially outwardly to its yarn threading position.

9. In a textile yarn processing machine, as set forth in claim 8, in which said yarn entry tube includes means biasing said entry tube into its yarn processing position.

Claims

1. In a textile yarn processing machine, such as a twister, spinning frame of the like, having a spindle assembly for the processing of yarn which includes a carrier mechanism having a hollow carrier member for supporting thereon a hollow supply package of yarn to be processed and a hollow yarn entry tube carried within said carrier member and extending outwardly therefrom axially of the supply package supported thereon for receiving the yarn from the supply package and providing an axially extending passageway for the yarn therethrough for processing by said spindle assembly; the combination therewith of: an improved yarn guiding flyer mechanism for receiving and guiding the yarn being processed from the supply package to the yarn entry tube and being characterized by being constructed for ease in threading of the yarn therethrough when threading of the yarn through said spindle assembly is necessary; said flyer mechanism comprising an elongate medial body portion, an outer free end portion connected with one end of said body portion and comprising a hollow eye member for receiving and passing the yarn therethrough, and a mounting portion connected with the other end of said body portion and comprising means mounting said flyer mechanism of said yarn entry tube for rotation relative thereto and for pivotal movement between a yarn processing position in which said flyer mechanism extends generally radially outwardly from said yarn entry tube and the supply package of yarn for receiving and guiding the yarn during processing and a yarn threading position in which said flyer mechanism extends generally axially of said yarn entry tube and the supply package of yarn and said eye member is axially aligned with said passageway of said yarn entry tube for threading of the yarn easily through said eye member when the yarn is threaded through said yarn entry tube passageway; and the length of said yarn entry tube above the supply package of yarn and the length of said flyer mechanism being matched so that no substantial gap is presented between the outer end of said yarn entry tube and said eye member when said flyer mechanism is in the yarn threading position for ease in threading.

3. In a textile yarn processing machine, as set forth in claim 1, in which said body portion of said flyer mechanism Is slightly angled to form an obtuse angle and said eye member extends generally transversely outwardly at a slight angle from one side of said body member so as to form an acute angle with said body member, so that said flyer member in the yarn threading position thereof will be positioned slightly over-center with respect to the longitudinal axis of said yarn entry tube and said eye member will be positioned generally congruently with said yarn entry tube passageway.

4. In a textile yarn processing machine, as set forth in claim 3, in which said body portion of said flyer mechanism comprises two elongate members connecting said eye member and said mounting portion and spaced-apart a distance slightly greater than the outside diameter of said yarn entry tube and positioned for passing on the outside of said yarn entry tube when said flyer mechanism is moved to the yarn threading position thereof, and a connecting web member connecting said elongate members along at least a portion of their length and positioned for abutting said yarn entry tube for aiding in holding said flyer mechanism in the yarn threading position thereof.

6. In a textile yarn processing machine, as set forth in claim 1, in which said body portion of said flyer mechanism comprises two elongate members connecting said eye member and said mounting portion and spaced-apart a distance slightly greater than the outside diameter of said yarn entry tube and positioned for passing on the outside of said yarn entry tube when said flyer mechanism is moved to the yarn threading position thereof; and in which said mounting portion of said flyer mechanism comprising an inwardly facing swivel spigot secured to the inside surface of each of said two elongate body members and a hollow sleeve member rotatably positioned around said yarn entry tube and having support slots on opposite sides of the outer surface thereof for receiving said swivel spigots for pivotaly mounting said flyer mechanism on said yarn entry tube.