US3813870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for automatically doffing cops in a ring spinner
Assignee: Selex Elsag Datamat SpA
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Filing: 1973-03-29
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Granted: 1974-06-04
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Expires: 1993-03-29
Abstract
Abstract Method for automatic cop doffing in a ring spinner. According to the method, it is provided to grip the reels or cops by pliers carried by a spinner doffing device, adjacent the bottom end thereof to clamp the last coils of wound up yarn; to lift the reels or cops by a distance sufficient to tear the yarn and place a reel again on its associated spindle; then to grip the reels or cops at a higher location than the former, lifting such reels or cops to be unthreaded from the spindles and to complete the doffing operations for replacement with spools.
Inventors
- 👤 G Viglione
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:19
CPC Classifications
D; D01; D01H; D01H9/00; D01H9/02; D01H9/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
173 words
A method for automatic cop doffing in a spinner having a plurality of pliers for gripping the reels or cops and the yarn winding up spools, said pliers being carried by a plier-carrying bar, vertically and horizontally movable supported between one bottom position thereof adjacent a conveyor belt for feeding the spools and unloading the cops, and at least one top position relative to the spindle-carrying frame of said spinner, wherein a provision is made for moving said pliers-carrying bar to a top position with said pliers arranged at a closest location as possible to the bottom end of said cops; clamping the pliers by gripping the cops at the bottom end thereof firmly pressing the last coils of wound up yarn; lifting the cops by a distance sufficient to tear the thread within the length between the gripping location for one pliers on the cop and a thread supply previously wound up on the spindle underlying the spool; and finally doffing the cop from the spindle and replacing it with a spool.
Claim 2
Independent Claim
173 words
A method for automatic cop doffing in a spinner having a plurality of pliers for gripping the reels or cops and the yarn winding up spools, said pliers being carried by a plier-carrying bar, vertically and horizontally movable supported between one bottom position thereof adjacent a conveyor belt for feeding the spools and unloading the cops, and at least one top position relative to the spindle-carrying frame of said spinner, wherein a provision is made for moving said pliers-carrying bar to a top position with said pliers arranged at a closest location as possible to the bottom end of said cops; clamping the pliers by gripping the cops at the bottom end thereof firmly pressing the last coils of wound up yarn; lifting the cops by a distance sufficient to tear the thread within the length between the gripping location for one pliers on the cop and a thread supply previously wound up on the spindle underlying the spool; and finally doffing the cop from the spindle and replacing it with a spool.
Claim 3
Dependent Claim
81 words
A method for automatic cop doffing in a spinner as claimed in claim 1, wherein following the thread break step, it is further provided to again lower the cop, threading it on the associated spindle, to loosen the pliers grip lifting it by an upward movement of the pliers-carrying bar; to grip the cop at a location overlying the former, and then unthread the cop from the spindle for carrying out the subsequent doffing operations, replacing the cops with the spools.
Claim 4
Dependent Claim
17 words
A method as claimed in claim 1, wherein use is made of a pneumatic type of pliers.
Claim 5
Dependent Claim
17 words
A method as claimed in claim 1, wherein use is made of a mechanical type of pliers.
Claim 6
Dependent Claim
163 words
A method as claimed in claim 2, wherein following the yarn break of each cop carried by a pliers of the movable bar, it is provided to lower the pliers-carrying bar to thread again the cops on the associated spindles by gripping the same at an overlying location, further comprising the steps of unthreading the cops from the spindles by a further lifting movement of the pliers-carrying bar, outwardly laterally moving it and then lowering it to its bottom position with the pliers for the spools in alignment therewith, clamping said spools carried by said conveyor, and the moving said pliers-carrying bar in opposite direction to the first direction by a composite movement for the articulated framework of its supporting structure to carry the spools upward as available on the spinner spindles, and lower down again said pliers-carrying bar still holding the cops to arrange the latter on said conveyor; the cops beinG then carried to an end unloading position of the spinner.
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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |