US3741490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn package doffing apparatus and method
Assignee: Individual
•
Filing: 1971-11-16
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Granted: 1973-06-26
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Expires: 1991-11-16
Abstract
Abstract An improved method and apparatus for doffing wound packages of strand materials and donning empty cores for resumption of winding, in which the mounting of an empty core onto a core supporting arm is particularly facilitated by slowing movement of the arm as the arm returns to a winding position and an empty core is donned.
Inventors
- 👤 J Venot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:15
CPC Classifications
B; B65; B65H; B65H67/00; B65H67/04; B65H67/0405; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
232 words
In a yarn processing machine which continually advances at least one yarn at a corresponding one location and which has arm means for mounting package cores about which advancing yarn is wound into packages, core supply means for retaining a supply of empty cores, oscillating shaft means for driving said arm means from a winding position to a doffing position and to a donning position and back to the winding position, arm actuating means cooperating with said arm means for doffing a package moved by said arm means to the doffing position and for capturing an empty core from said core supply means at the donning position, severing means for separating a package being doffed from the advancing yarn and forming a running free end of advancing yarn, and control means for controlling the running free end of advancing yarn during doffing and donning, an improvement facilitating doning of empty cores by said arm means and comprising drive means operatively connected with said shaft means for driving said shaft means in predetermined oscillation at a first velocity from a first rotational position through a second rotational position to a third rotational position and then in return to said second position and, after slowing to a lower velocity at said second position, back to said first position whereby donning of an empty core onto said arm means at said second position is facilitated.
Claim 2
Dependent Claim
232 words
In a yarn processing machine which continually advances at least one yarn at a corresponding one location and which has arm means for mounting package cores about which advancing yarn is wound into packages, core supply means for retaining a supply of empty cores, oscillating shaft means for driving said arm means from a winding position to a doffing position and to a donning position and back to the winding position, arm actuating means cooperating with said arm means for doffing a package moved by said arm means to the doffing position and for capturing an empty core from said core supply means at the donning position, severing means for separating a package being doffed from the advancing yarn and forming a running free end of advancing yarn, and control means for controlling the running free end of advancing yarn during doffing and donning, an improvement facilitating doning of empty cores by said arm means and comprising drive means operatively connected with said shaft means for driving said shaft means in predetermined oscillation at a first velocity from a first rotational position through a second rotational position to a third rotational position and then in return to said second position and, after slowing to a lower velocity at said second position, back to said first position whereby donning of an empty core onto said arm means at said second position is facilitated.
Claim 3
Dependent Claim
91 words
Apparatus according to claim 1 wherein a plUrality of yarns are simultaneously advanced at a corresponding plurality of locations and wherein said shaft means functions for driving said arm means of at least two of said locations and further comprising at least two selectively operable clutch means for operatively connecting corresponding ones of said at least two arm means with said common shaft means and doffing sequence control means operatively connected with said clutch means for normally selectively operating said clutch means one at a time in predetermined sequence as required.
Claim 4
Dependent Claim
80 words
Apparatus according to claim 2 wherein said doffing sequence control means comprises at least two package size detecting means for sensing when a corresponding package being wound at a corresponding one of said at least two locations reaches a predetermined diameter and stepping means operatively connected to said size detecting means and responsive thereto for sequentially testing the need for doffing at each of said at least two locations and for operating said clutch means only where doffing is needed.
Claim 5
Dependent Claim
35 words
Apparatus according to claim 2 further comprising manually operable doffing control means for overriding said doffing sequence control means and for selectively operating one of said clutch means out of sequence and on manual actuation.
Claim 6
Dependent Claim
45 words
Apparatus according to claim 2 wherein said drive means is operatively connected with said doffing sequence control means and is responsive thereto for interrupting the reciprocating rotation of said shaft means during such interval of time as operation of said clutch means is not required.
Claim 7
Dependent Claim
92 words
Apparatus according to claim 1 wherein said yarn handling means further includes a drive roll parallel to and spaced from said shaft means and for engaging and rotating a package being wound and further wherein said control means comprises suction tube means aligned with a line perpendicular to said shaft means and medial of said arm means for drawing in an advancing yarn passing thereadjacent, cover means for normally closing said suction tube means, and cam means for opening said cover means during movement of said arm means to the doffing position.
Claim 8
Dependent Claim
40 words
Apparatus according to claim 6 wherein said suction tube means is disposed to the side of said shaft means opposite said drive roll so as to underlie the advancing yarn upon movement of said arm means to the doffing position.
Claim 9
Dependent Claim
35 words
Apparatus according to claim 1 further comprising brake means operable in timed relation to movement of said arm means for braking rotation of a package upon movement of said arm means to the doffing position.
Claim 10
Dependent Claim
37 words
Apparatus according to claim 8 further comprising yarn severing means operable in timed relation to said brake means for severing stationary yarn following braking of the package and thereby for separating the package from the advancing yarn.
Claim 11
Dependent Claim
121 words
Apparatus according to claim 1 wherein a drive roll means is mounted parallel to and spaced from said shaft means for engaging and rotating a package being wound and further wherein said arm means comprises a hub member mounted on said shaft means for selective oscillation therewith, first and second arm members mounted on said hub member, and elastically deformable means operatively coupling said hub member and said arm members for normal movement together, said deformable means accommodating relative movement between said hub member and said arm members during return movement of said shaft means to said first position and thereby permitting exertion of pressure between said drive roll and a donned empty core and facilitating formation of a new package.
Claim 12
Dependent Claim
56 words
Apparatus according to claim 1 further comprising tail forming yarn guide means operable in timed relation to movement of said arm means for engaging advancing yarn to be wound about a newly donned empty core and for guiding the yarn to wind an initial length about a portion of said empty core adjacent one end thereof.
Claim 13
Dependent Claim
161 words
In a textile yarn handling machine which continually advances yarn and which has Arm means for mounting package cores about which advancing yarn is wound into packages, oscillating shaft means for driving said arm means from a winding position to a doffing position and back to the winding position, arm actuating means cooperating with said arm means for doffing a package moved by said arm means to the doffing position, and severing means for separating a package being doffed from the advancing yarn, an improvement facilitating separation of a doffed package from an advancing yarn and comprising aligned opposing disk means mounted on said arm means for engaging corresponding end portions of a core gripped therebetween and for rotating therewith during package winding, and brake means responsive to movement of said arm means to the doffing position for locking one of said disk means against rotation relative to said arm means and thereby for braking rotation of a package being doffed.
Claim 14
Dependent Claim
161 words
In a textile yarn handling machine which continually advances yarn and which has Arm means for mounting package cores about which advancing yarn is wound into packages, oscillating shaft means for driving said arm means from a winding position to a doffing position and back to the winding position, arm actuating means cooperating with said arm means for doffing a package moved by said arm means to the doffing position, and severing means for separating a package being doffed from the advancing yarn, an improvement facilitating separation of a doffed package from an advancing yarn and comprising aligned opposing disk means mounted on said arm means for engaging corresponding end portions of a core gripped therebetween and for rotating therewith during package winding, and brake means responsive to movement of said arm means to the doffing position for locking one of said disk means against rotation relative to said arm means and thereby for braking rotation of a package being doffed.
Claim 15
Dependent Claim
176 words
In a synthetic yarn texturing machine which continually advances textured yarn and which has yarn handling means for winding an advancing yarn about a core into a package which includes a drive roll for engaging and rotating a package being wound, oscillating shaft means spaced from and parallel to said drive roll for reciprocating rotation relative thereto, a hub member mounted on said shaft means for selective rotation therewith, and first and second arm members mounted on said hub member for moving wound packages from a winding position to a doffing position and moving empty cores from a donning position back to the winding position, an improvement which facilitates initiation of yarn winding about a newly donned core and comprising elastically deformable means operatively coupling said hub member and said arm members for normal movement together, said deformable means accommodating relative movement between said hub member and said arm members during movement of said arm members back to the winding position and thereby permitting exertion of pressure between said drive roll and a donned empty core.
Claim 16
Dependent Claim
176 words
In a synthetic yarn texturing machine which continually advances textured yarn and which has yarn handling means for winding an advancing yarn about a core into a package which includes a drive roll for engaging and rotating a package being wound, oscillating shaft means spaced from and parallel to said drive roll for reciprocating rotation relative thereto, a hub member mounted on said shaft means for selective rotation therewith, and first and second arm members mounted on said hub member for moving wound packages from a winding position to a doffing position and moving empty cores from a donning position back to the winding position, an improvement which facilitates initiation of yarn winding about a newly donned core and comprising elastically deformable means operatively coupling said hub member and said arm members for normal movement together, said deformable means accommodating relative movement between said hub member and said arm members during movement of said arm members back to the winding position and thereby permitting exertion of pressure between said drive roll and a donned empty core.
Claim 17
Dependent Claim
188 words
In a yarn production process including continually advancing yarn, mounting a core on an arm and winding the advancing yarn about the core and into a package, moving a wound package from a winding position to a doffing position and doffing the package from the arm while severing the advancing yarn to separate the package and form a running free end of advancing yarn, and controlling the running free end of advancing yarn while moving the arm to a donning position and donning an empty core onto the arm and moving the empty core to the winding position, an improvement facilitating donning of empty cores onto the arm and comprising moving an oscillating drive shaft in predetermined oscillation from a first rotational position at a first velocity through a second rotational position to a third rotational position and then in return to the second position and, after slowing to a lower velocity at the second position, back to the first position, and driving the arm from the shaft whereby donning of an empty core is facilitated by the slower movement of the arm means at the donning position.
Claim 18
Dependent Claim
188 words
In a yarn production process including continually advancing yarn, mounting a core on an arm and winding the advancing yarn about the core and into a package, moving a wound package from a winding position to a doffing position and doffing the package from the arm while severing the advancing yarn to separate the package and form a running free end of advancing yarn, and controlling the running free end of advancing yarn while moving the arm to a donning position and donning an empty core onto the arm and moving the empty core to the winding position, an improvement facilitating donning of empty cores onto the arm and comprising moving an oscillating drive shaft in predetermined oscillation from a first rotational position at a first velocity through a second rotational position to a third rotational position and then in return to the second position and, after slowing to a lower velocity at the second position, back to the first position, and driving the arm from the shaft whereby donning of an empty core is facilitated by the slower movement of the arm means at the donning position.
Claim 19
Dependent Claim
69 words
A process according to claim 14 wherein a plurality of yarns are simultaneously advanced and wound into a corresponding plurality of packages at a corresponding plurality of arm locations and the oscillating drive shaft is common to at least two arm locations and further comprising selectively operatively connecting corresponding ones of the at least two arms with the shaft one at a time and in predetermined sequence as required.
Claim 20
Dependent Claim
48 words
A process according to claim 15 further comprising sensing the winding of a package to a predetermined size and, upon a package reaching such a size, testing the need for doffing at each of the at least two arm locations and doffing only at those locations where needed.
Claim 21
Dependent Claim
40 words
A process according to claim 16 further comprising scanning stepwise the need for doffing at each arm location, detecting the end of a previous doffing operation, and iniTiating doffing at another arm location in response to such scanning and detecting.
Claim 22
Dependent Claim
17 words
A process according to claim 15 further comprising manually selecting an arm for connection out of sequence.
Claim 23
Dependent Claim
33 words
A process according to claim 14, wherein the controlling of the running free end comprises mechanically actuating a suction yarn entrapping mechanism in response to movement of the package to the doffing position.
Claim 24
Dependent Claim
31 words
A process according to claim 14, further comprising braking a wound package against rotation during severing of the yarn and discharging the package in an immovable condition into a receiving chute.
Claim 25
Dependent Claim
46 words
A process according to claim 14, wherein winding is effected by rotating a core through frictional contact with a winding drive roll and further comprising resiliently pressing a donned empty core against the winding drive roll to facilitate winding of the free end of yarn thereabout.
Claim 26
Dependent Claim
184 words
In a textile yarn handling process including continually advancing yarn, mounting a core on an arm and winding the advancing yarn about the core and into a package, moving a wound package from a winding position to a doffing position and doffing the package from the arm while severing the advancing yarn to separate the package and form a running free end of advancing yarn, and controlling the running free end of advancing yarn while moving the arm to a donning position and donning an empty core onto the arm and moving the empty core to the winding position, an improvement facilitating donning of empty cores onto the arm and comprising moving an oscillating drive shaft in predetermined oscillation and driving the arm from the shaft to displace the arm at a first velocity from the winding position to the doffing position and then to the donning position and, after slowing to a lower velocity at the donning position, back to the winding position whereby donning of an empty core is facilitated by the slower movement of the arm means at the donning position.
Claim 27
Dependent Claim
184 words
In a textile yarn handling process including continually advancing yarn, mounting a core on an arm and winding the advancing yarn about the core and into a package, moving a wound package from a winding position to a doffing position and doffing the package from the arm while severing the advancing yarn to separate the package and form a running free end of advancing yarn, and controlling the running free end of advancing yarn while moving the arm to a donning position and donning an empty core onto the arm and moving the empty core to the winding position, an improvement facilitating donning of empty cores onto the arm and comprising moving an oscillating drive shaft in predetermined oscillation and driving the arm from the shaft to displace the arm at a first velocity from the winding position to the doffing position and then to the donning position and, after slowing to a lower velocity at the donning position, back to the winding position whereby donning of an empty core is facilitated by the slower movement of the arm means at the donning position.
Claim 28
Dependent Claim
227 words
In a textile yarn handling machine which continually advances yarn and which has arm means for mounting package cores about which advancing yarn is wound into packages, core supply means for retaining a supply of empty cores, oscillating shaft means for driving said arm means from a winding position to a doffing position and to a donning position and back to the winding position, arm actuating means cooperating with said arm means for doffing a package moved by said arm means to the doffing position and for capturing an empty core from said core supply means at the donning position, severing means for separating a package being doffed from the advancing yarn and forming a running free end of advancing yarn, and control means for controlling the running free end of advancing yarn during doffing and donning, an improvement facilitating donning of empty cores and comprising drive means operatively connected with said shaft means for driving said shaft means in predetermined oscillation and for displacing said arm means at a first velocity from the winding position to the doffing position and then to the donning position and, after slowing movement of said arm means to a lower velocity at the donning position, back to said winding position whereby donning of an empty core is facilitated by the slower movement of said arm means at the donning position.
Claim 29
Dependent Claim
227 words
In a textile yarn handling machine which continually advances yarn and which has arm means for mounting package cores about which advancing yarn is wound into packages, core supply means for retaining a supply of empty cores, oscillating shaft means for driving said arm means from a winding position to a doffing position and to a donning position and back to the winding position, arm actuating means cooperating with said arm means for doffing a package moved by said arm means to the doffing position and for capturing an empty core from said core supply means at the donning position, severing means for separating a package being doffed from the advancing yarn and forming a running free end of advancing yarn, and control means for controlling the running free end of advancing yarn during doffing and donning, an improvement facilitating donning of empty cores and comprising drive means operatively connected with said shaft means for driving said shaft means in predetermined oscillation and for displacing said arm means at a first velocity from the winding position to the doffing position and then to the donning position and, after slowing movement of said arm means to a lower velocity at the donning position, back to said winding position whereby donning of an empty core is facilitated by the slower movement of said arm means at the donning position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |