Patent US3860187A successfully refreshed from Google Patents.
US3860187A
Expired / Lapsed
US
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Circuit for controlling the thread velocity in winding equipment with a traversing mechanism
Assignee: Siemens AG
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Filing: 1973-04-18
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Granted: 1975-01-14
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Expires: 1993-04-18
Abstract
Abstract A circuit for controlling the thread velocity in universal winding machines having a traversing mechanism is disclosed. The circuit develops a correction factor, derived from the diameter of the winding on the spindle or the speed of the motor driving the spindle. This correction factor is then used as an input to the thread velocity control circuit to maintain a constant velocity for the thread being fed to a spindle.
Inventors
- 👤 Manfred Liska
- 👤 Jurgen Metzger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:03
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/38; B65H59/384; B65H59/385; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
A circuit for controlling the thread velocity in a universal winding machine having a traversing mechanism, said machine including a spool drive operated by a speed control, said circuit providing compensation for inaccuracies resulting from said traversing mechanism comprising: a. means to measure the tangential velocity of the spool and to provide a first output signal proportional thereto; b. means to provide a second signal representing a desired tangential velocity; c. means having said first and second signals as inputs to develop a speed control signal; d. means to develop a third signal proportional to the actual spool drive speed; e. means to couple said speed control signal and said third signal to said speed control; f. means to develop from said actual spool drive speed a correction factor signal proportional to the diameter of the winding on the spool; and g. means to add said correction factor signal to said speed control signal.
Claim 2
Dependent Claim
154 words
A circuit for controlling the thread velocity in a universal winding machine having a traversing mechanism, said machine including a spool drive operated by a speed control, said circuit providing compensation for inaccuracies resulting from said traversing mechanism comprising: a. means to measure the tangential velocity of the spool and to provide a first output signal proportional thereto; b. means to provide a second signal representing a desired tangential velocity; c. means having said first and second signals as inputs to develop a speed control signal; d. means to develop a third signal proportional to the actual spool drive speed; e. means to couple said speed control signal and said third signal to said speed control; f. means to develop from said actual spool drive speed a correction factor signal proportional to the diameter of the winding on the spool; and g. means to add said correction factor signal to said speed control signal.
Claim 3
Dependent Claim
64 words
A circuit for controlling the thread velocity in a winding machine as in claim 1 in which the spool winder drive is a d-c motor without a commutator and having a permanent magnet rotor and in which the e.m.f. inducted in the stator windings by the permanent-magnet rotor is used to represent the actual value of the speed of rotation of the spindle winder.
Claim 4
Dependent Claim
38 words
A circuit for controlling the thread velocity in a winding machine as in claim 2 wherein said means to develop a correction factor signal comprises an amplifier having as an input said e.m.f. induced in the stator windings.
Claim 5
Dependent Claim
22 words
A circuit for controlling the thread velocity in a winding machine as in claim 3, in which the amplifier has adjustable feedback.
Claim 6
Dependent Claim
23 words
A circuit for controlling the thread velocity in a winding machine as in claim 4, in which the adjustable feedback is made non-linear.
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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |