US3910514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing improved packages
Assignee: Individual
•
Filing: 1974-05-22
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Granted: 1975-10-07
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Expires: 1994-05-22
Abstract
Abstract There has been provided an improved apparatus for building packages of yarn including a bobbin for taking up the yarn and a reciprocating guide member for reciprocating along the axis of rotation of the bobbin. The guide is driven by a controlled drive at a selected ribbon breaking rate for breaking patterns of ribbon formation. The improvement comprises means adapted to be coupled to the drive for modifying the ribbon breaking rate at a selected frequency modulation rate. The process employing the above apparatus utilizes the improved step of frequency modulating the ribbon breaking rate.
Inventors
- 👤 Clive Williams Hooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:54
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/38; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
161 words
An improved control for use with apparatus for winding yarn on a bobbin including a drive means for driving the bobbin, a traversing mechanism for repetitively traversing the yarn axially along the surface of the bobbin during wind up, and control means for the traversal mechanism for generating a rate control signal for driving the mechanism at a selected rate, said control means including means setting a mean driving rate signal as part of said rate control signal, ribbon breaking rate means for continuously generating a relatively long term cyclically varying signal as part of said rate control signal for varying the rate control signal between predetermined fixed limits respectively above and below the mean driving rate signal, and wherein said control means further includes modifying means for continuously generating a relatively short term varying signal as part of said rate control signal for continuously modifying the rate at which the rate control signal is varied between the predetermined fixed limits.
Claim 2
Dependent Claim
161 words
An improved control for use with apparatus for winding yarn on a bobbin including a drive means for driving the bobbin, a traversing mechanism for repetitively traversing the yarn axially along the surface of the bobbin during wind up, and control means for the traversal mechanism for generating a rate control signal for driving the mechanism at a selected rate, said control means including means setting a mean driving rate signal as part of said rate control signal, ribbon breaking rate means for continuously generating a relatively long term cyclically varying signal as part of said rate control signal for varying the rate control signal between predetermined fixed limits respectively above and below the mean driving rate signal, and wherein said control means further includes modifying means for continuously generating a relatively short term varying signal as part of said rate control signal for continuously modifying the rate at which the rate control signal is varied between the predetermined fixed limits.
Claim 3
Dependent Claim
36 words
The apparatus as described in claim 1 wherein said modifying means comprises an oscillator for producing a modulating signal, thereby producing continuous modulation of the relatively long term cyclically varying signal between the fixed predetermined limits.
Claim 4
Dependent Claim
16 words
The apparatus as described in claim 2 wherein said modulating signal comprises a triangular wave form.
Claim 5
Dependent Claim
16 words
The apparatus as described in claim 2 wherein said modulation signal compries a sinusoidal wave form.
Claim 6
Dependent Claim
15 words
The apparatus as described in claim 2 wherein said modulation signal comprises random noise signals.
Claim 7
Dependent Claim
25 words
The apparatus as described in claim 2 wherein said modulation comprises modulation of said long term cyclically varying signal at least greater than 2 percent.
Claim 8
Dependent Claim
24 words
The apparatus as described in claim 2 wherein said modulation comprises modulation of said long term cyclically varying signal between 2 and 50 percent.
Claim 9
Dependent Claim
24 words
The apparatus as described in claim 2 wherein said modulation comprises modulation of said long term cyclically varying signal between 5 and 30 percent.
Claim 10
Dependent Claim
19 words
The apparatus as described in claim 2 including means for varying the frequency and amplitude of said modulating signal.
Claim 11
Dependent Claim
66 words
The apparatus as described in claim 2 wherein said oscillator includes first, second and third means respectively adapted for generating a triangular waveform, a sinusoidal waveform and random noise outputs, amplitude control means for each first, second and third means adapted for controlling the amplitude for its respective output and frequency control means for each first, second and third means adapted to control the frequency thereof.
Claim 12
Dependent Claim
39 words
The apparatus as described in claim 10 including summing means adapted to be selectively coupled between the outputs of said first, second and third means and said traversal mechanism, said selected rate varied in accordance with said summed outputs.
Claim 13
Dependent Claim
110 words
A process for building packages of yarn, string and similar elongate objects in which a bobbin is supplied with yarn and is driven at a selected speed and a traversing mechanism repetitively traverses the yarn axially along the surface of the bobbin during the wind up at a selected traverse rate comprising the steps of cyclically and continuously varying the traverse rate between fixed predetermined limits on each side of a mean traverse rate to define a ribbon breaking traverse rate, and continuously modifying the ribbon breaking traverse rate by modulating it with a short term varying signal to vary thE ribbon breaking traverse rate between the fixed predetrmined limits.
Claim 14
Dependent Claim
110 words
A process for building packages of yarn, string and similar elongate objects in which a bobbin is supplied with yarn and is driven at a selected speed and a traversing mechanism repetitively traverses the yarn axially along the surface of the bobbin during the wind up at a selected traverse rate comprising the steps of cyclically and continuously varying the traverse rate between fixed predetermined limits on each side of a mean traverse rate to define a ribbon breaking traverse rate, and continuously modifying the ribbon breaking traverse rate by modulating it with a short term varying signal to vary thE ribbon breaking traverse rate between the fixed predetrmined limits.
Claim 15
Dependent Claim
20 words
The process as described in claim 12 wherein said modulation of the ribbon breaking traverse rate comprises frequency modulation thereof.
Claim 16
Dependent Claim
52 words
The process as described in claim 12 wherein the step of modulating the ribbon breaking traverse rate is carried out with a short term varying signal having a frequency and amplitude such that the modulated ribbon breaking traverse rate contains lower Fourier series frequency components than an unmodulated ribbon breaking traverse rate.
Claim 17
Dependent Claim
20 words
The process as described in claim 12 wherein said step of modulation is performed with a triangular waveform modulating signal.
Claim 18
Dependent Claim
20 words
The process as described in claim 12 wherein said step of modulation is performed with a sinusoidal waveform modulating signal.
Claim 19
Dependent Claim
20 words
The process as described in claim 12 wherein said step of modulation is performed with a random noise modulating signal.
Claim 20
Dependent Claim
32 words
The process as described in claim 12 wherein said modulation of said ribbon breaking traverse rate is carried out to an extent sufficient to produce between 2 and 50 percent modulation thereof.
Claim 21
Dependent Claim
32 words
The process as described in claim 12 wherein said modulation of said ribbon breaking traverse rate is carried out to an extent sufficient to produce between 5 and 30 percent modulation thereof.
Claim 22
Dependent Claim
36 words
The process as described in claim 12 wherein said modulation is carried out with a modulating signal which is the sum of a triangular waveform signal, a sinusoidal waveform signal and a random noise waveform signal.
Claim 23
Dependent Claim
27 words
The process as described in claim 20 including the step of selectively varying the frequency and amplitude of each of said triangular, sinusoidal and random noise signals.
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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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |