US3608843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the pneumatic removal of the foot winding or lap from cops
Assignee: Machinenfabrik Schweiter AG
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Filing: 1969-05-29
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Granted: 1971-09-28
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Expires: 1989-05-29
Abstract
Abstract A novel method and apparatus for pneumatically removing the foot winding or lap from spinning cops or bobbins is disclosed. The method aspects of the invention contemplate exposing the foot lap, as the cop rotates, to an airstream over a portion of its circumference, the airstream acting upon the section of the foot lap in an essentially axial direction. The novel apparatus comprises a rotatable support and clamping installation for replaceably receiving the cop as well as a suction tube for surrounding the free end of the cop. The suction tube is tapered in the area of the cop foot and is closed off by a bottom portion at the conical end thereof, the bottom portion having a nozzlelike opening eccentrically disposed outside of the axis of the suction tube, the opening being aligned with the foot lap section acted upon by the airstream when a cop is inserted in the suction tube.
Inventors
- 👤 Wernfried Siedlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:44
CPC Classifications
B; B65; B65H; B65H67/00; B65H67/08; B65H67/086; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
A method for pneumatically removing the foot lap from cops having a foot, said method comprising the steps of, rotating the cop, exposing the foot lap at the foot of the cop to an airstream as the cop rotates and constraining the airstream in an essentially axial direction upon a portion of the foot lap over a portion of the circumference of the cop, forwardly displacing that circumferential portion of the foot lap exposed to the axially directed airstream in a direction towards the end of the foot of the cop, then as the cop rotates exposing a further circumferential portion of the foot lap trailing the previously forwardly displaced foot lap portion to the axially directed airstream to again forwardly displace such further portion of the foot lap, and repeatedly subjecting the trailing portions of the foot lap during rotation of the cop to the action of the axially directed airstream to loosen windings of the foot lap and finally to move such foot lap completely off the foot of the cop.
Claim 2
Independent Claim
173 words
A method for pneumatically removing the foot lap from cops having a foot, said method comprising the steps of, rotating the cop, exposing the foot lap at the foot of the cop to an airstream as the cop rotates and constraining the airstream in an essentially axial direction upon a portion of the foot lap over a portion of the circumference of the cop, forwardly displacing that circumferential portion of the foot lap exposed to the axially directed airstream in a direction towards the end of the foot of the cop, then as the cop rotates exposing a further circumferential portion of the foot lap trailing the previously forwardly displaced foot lap portion to the axially directed airstream to again forwardly displace such further portion of the foot lap, and repeatedly subjecting the trailing portions of the foot lap during rotation of the cop to the action of the axially directed airstream to loosen windings of the foot lap and finally to move such foot lap completely off the foot of the cop.
Claim 3
Independent Claim
123 words
An apparatus for pneumatically removing the foot lap from cops having a foot end, and a head end, said apparatus comprising a rotatable support and clamping device for replaceably receiving and rotatably clamping the region of said head end of the cop, a suction tube surrounding said foot end of the cop, said suction tube conically tapering off in the area of said foot end of the cop and being closed off by a bottom portion at its conical end, said bottom portion having a substantially nozzlelike opening outside and eccentric to the axis of said suction tube, said opening being aligned with the foot lap section to be acted upon by the airstream when the cop is inserted in said suction tube.
Claim 4
Independent Claim
123 words
An apparatus for pneumatically removing the foot lap from cops having a foot end, and a head end, said apparatus comprising a rotatable support and clamping device for replaceably receiving and rotatably clamping the region of said head end of the cop, a suction tube surrounding said foot end of the cop, said suction tube conically tapering off in the area of said foot end of the cop and being closed off by a bottom portion at its conical end, said bottom portion having a substantially nozzlelike opening outside and eccentric to the axis of said suction tube, said opening being aligned with the foot lap section to be acted upon by the airstream when the cop is inserted in said suction tube.
Claim 5
Dependent Claim
27 words
An apparatus pursuant to claim 2 whErein the conical end of said suction tube is, on its inside, provided with guide surfaces leading towards said nozzlelike opening.
Claim 6
Dependent Claim
24 words
An apparatus pursuant to claim 3 wherein said conical end of said suction tube possesses an inwardly tapered inside surface defining said guide surfaces.
Claim 7
Dependent Claim
24 words
An apparatus pursuant to claim 2 further including a yarn-cutting knife disposed on the suction side of said bottom portion immediately following the same.
Claim 8
Dependent Claim
27 words
An apparatus pursuant to claim 2 wherein said bottom portion defines a stop means for centering and firmly clamping the cop on said support and clamping device.
Claim 9
Dependent Claim
22 words
An apparatus pursuant to claim 6, further including means for axially displacing said support and clamping device relative to said suction tube.
Claim 10
Dependent Claim
36 words
An apparatus pursuant to claim 7 wherein said support and clamping device further includes clamping jaws for the cop, said clamping jaws being operable in dependency upon said axial displacement of said support and clamping device.
Claim 11
Dependent Claim
17 words
An apparatus pursuant to claim 2 wherein said suction tube comprises a cylindrical jacket foldable in halves.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |