Patent US3908347A successfully refreshed from Google Patents.
US3908347A
Expired / Lapsed
US
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Process and apparatus for the control of spinning machines
Assignee: Heberlein Hispano SA
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Filing: 1974-02-20
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Granted: 1975-09-30
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Expires: 1994-02-20
Abstract
Abstract Apparatus for controlling a spinning machine having a plurality of spindles in a plurality of individual spinning stations is provided either with sensors allocated to the spindles for surveying thread breakages or with a sensor that cyclically traverses the spinning stations. The sensor or sensors signal the number of breakages during a predetermined time unit to a counter. The resulting value, together with a limit value delivered by a preselection device is fed to a comparison device. Depending on whether the comparison device registers an amount above or below the limit value by a determined number of thread breakages, a signal is delivered to an adjusting device which proportionally reduces or increases the speed of the spindles. Where a single sensor is used, this together with an automatic thread knotting device, may traverse the spinning stations. The counter and a cooling matrix travel with the sensor and are arranged to transmit signals to a stationary interrogator which feeds the information to the comparison device. In a modification, the cyclically moving unit transmits a signal to a stationary switching device controlling a time transducer each time the knotting device completes a cycle, the outputs of the switching device and time transducer being fed to the comparison device.
Inventors
- 👤 Louis Vignon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:19
CPC Classifications
D; D01; D01H; D01H13/00; D01H13/32
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
98 words
A method of controlling spinning machines having a number of spinning stations, the spindles of which are rotated by means of a spindle driving device, and at least one automatic thread knotting device movable along the spinning stations, said method comprising the steps of cyclically surveying the number of the thread breakages in the individual spinning stations, continuously comparing the number of thread breakages surveyed in each cycle with a predeterminable limit value, and depending on whether the said number exceeds or falls short of the limit value, reducing or increasing the speed of the spindle driving device.
Claim 2
Independent Claim
98 words
A method of controlling spinning machines having a number of spinning stations, the spindles of which are rotated by means of a spindle driving device, and at least one automatic thread knotting device movable along the spinning stations, said method comprising the steps of cyclically surveying the number of the thread breakages in the individual spinning stations, continuously comparing the number of thread breakages surveyed in each cycle with a predeterminable limit value, and depending on whether the said number exceeds or falls short of the limit value, reducing or increasing the speed of the spindle driving device.
Claim 3
Dependent Claim
114 words
Apparatus for controlling a spinning machine having a number of spinning stations, the spindles of which are rotated by a means of a spindle driving device, and said apparatus comprising at least one sensor for cyclically surveying the individual spinning stations in said spinning machine, means for determining the number of thread breakages in each cyclic survey, comparison means for comparing said number of thread breakages with at least one predetermined limit value, and a signal device controlled by the said means for adjusting said spindle driving device for reducing the spindle speed upon increase of the number of thread breakages and for increasing the spindle upon reduction of the number of thread breakages.
Claim 4
Dependent Claim
114 words
Apparatus for controlling a spinning machine having a number of spinning stations, the spindles of which are rotated by a means of a spindle driving device, and said apparatus comprising at least one sensor for cyclically surveying the individual spinning stations in said spinning machine, means for determining the number of thread breakages in each cyclic survey, comparison means for comparing said number of thread breakages with at least one predetermined limit value, and a signal device controlled by the said means for adjusting said spindle driving device for reducing the spindle speed upon increase of the number of thread breakages and for increasing the spindle upon reduction of the number of thread breakages.
Claim 5
Dependent Claim
51 words
The apparatus according to claim 2, including an automatic thread knotting device, adapted to cyclically move past a number of spiNning stations together with said sensor and a surveying station constituting said comparison means for comparing the time taken by said thread knotting device for one cycle with a predetermined time.
Claim 6
Dependent Claim
123 words
The apparatus according to claim 3, in which said surveying station comprises a time switching installation including a switching device for activating a time measuring process of predeterminable duration upon the start of each cycle of said thread knotting device and for stopping the time measuring process after termination of the cycle, and a time transducer controlled by said switching device connected together with said switching device by way of said comparison means, to control said spindle driving device so as to switch to a higher spindle speed if the time needed by said thread knotting device is shorter than the predetermined time and to a lower spindle speed if the time needed by said knotting device is longer than the predetermined time.
Claim 7
Dependent Claim
64 words
The apparatus according to claim 2, including a counting device, said sensor being connected with said counting device for adding thread breakages registered by said sensor, means for delivering from said counting device control signals, depending on the number of thread breakages during a determined period of time and a stationary interrogator connected to said comparison means and adapted to receive said control signals.
Claim 8
Dependent Claim
18 words
Apparatus according to claim 2, in which said sensor is moved cyclically along a plurality of spinning stations.
Claim 9
Dependent Claim
30 words
The apparatus according to claim 6, including a member for delivering control signals to said spindle driving device said comparison means being connected for the continuous control of said member.
Claim 10
Dependent Claim
82 words
The apparatus according to claim 2, including a counting device, said sensor being connected with said counting device for adding thread breakages registered by said sensor, means for delivering from said counting device control signals, depending on the number of thread breakages during a predetermined period of time, and a stationary interrogator connected to said comparison means and adapted to receive said control signals, said counting device being fixed to said sensor and movable along said spinning stations together with said sensor.
Claim 11
Dependent Claim
49 words
The apparatus according to claim 8, in which said counting device comprises a storage device for registering the number of thread breakages during a predetermined surveying cycle and in which said stationary interrogator is adopted to receive the contents of said storage device after a cycle has been terminated.
Claim 12
Dependent Claim
42 words
The apparatus according to claim 9, in which said storage device comprises a number of iron cores the magnetic polarity of which is determined under the control of said counting device to represent the number of thread breakages during said predetermined time.
Claim 13
Dependent Claim
35 words
The apparatus according to claim 10, in which reed relays are mounted on said interrogator and are allocated to said iron cores to be influenced thereby during the passage of said cores past said interrogator.
Claim 14
Dependent Claim
34 words
The apparatus according to claim 11, in which said iron cores are arranged beside each other to be magnetized by the sensor signals in the binary code to represent the number of thread breakages.
Claim 15
Dependent Claim
26 words
The apparatus according to claim 2, including a potentiometer controlled by said comparison device and connected to said spindle driving device to regulate the spindle speed.
Claim 16
Dependent Claim
14 words
The apparatus according to claim 13, including a stepping motor for controlling said potentiometer.
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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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |