Patent US3640477A successfully refreshed from Google Patents.
US3640477A
Expired / Lapsed
US
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Coil winding machine
Assignee: Individual
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Filing: 1969-08-14
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Granted: 1972-02-08
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Expires: 1989-08-14
Abstract
Abstract Coil winding machine for preferably conical cross-wound bobbins includes thread storage means for compensating for varying thread winding speeds, and means for automatically adjusting the length of the stored thread in accordance with the fullness with which the bobbin is wound.
Inventors
- 👤 Stefan Furst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:45
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/005; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
153 words
In a coil winding machine, thread storage means for compensating for varying speeds of thread being wound on a bobbin, a carrying member for the bobbin, means for automatically adjusting the length of the thread stored by said thread storage means in accordance with the degree of fullness to which the bobbin is wound, said thread storage means comprising a device for forming a loop of the thread, said loop-forming device having at least one member connected to said carrying member, and a thread guide reciprocable along the bobbin, the length of the loop being controllable in accordance with the position of the thread guide along the bobbin, said loop-forming device being connected to said thread guide in addition to said carrying member so that at a predetermined position of the thread guide along the bobbin, the loop has a constant length for any degree of fullness to which the bobbin is wound.
Claim 2
Dependent Claim
153 words
In a coil winding machine, thread storage means for compensating for varying speeds of thread being wound on a bobbin, a carrying member for the bobbin, means for automatically adjusting the length of the thread stored by said thread storage means in accordance with the degree of fullness to which the bobbin is wound, said thread storage means comprising a device for forming a loop of the thread, said loop-forming device having at least one member connected to said carrying member, and a thread guide reciprocable along the bobbin, the length of the loop being controllable in accordance with the position of the thread guide along the bobbin, said loop-forming device being connected to said thread guide in addition to said carrying member so that at a predetermined position of the thread guide along the bobbin, the loop has a constant length for any degree of fullness to which the bobbin is wound.
Claim 3
Dependent Claim
68 words
Coil winding machine according to claim 1, wherein the carrying member for the bobbin is variable in position in accordance with the degree of fullness to which the bobbin is wound, and including a system of levers connecting said loop-forming device to said thread guide, said system of levers having an effective lever arm length that is variable in accordance with the position of the bobbin carrying member.
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |