US3878671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for measuring the twist of spun yarn in open-end spinning
Assignee: Elitex Zavody Textilniho
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Filing: 1973-09-17
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Granted: 1975-04-22
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Expires: 1993-09-17
Abstract
Abstract An open end spinning unit having feed means for delivering fibrous material, a rotary twisting means for spinning the fibers into a yarn, and a rotary withdrawing means for taking up the yarn. A first detector is located to sense the revolution of said twist means and providing an output having a value proportional to the number of revolutions. A second detector is located to sense the revolution of the withdrawing means and providing an output having a value proportional to the number of revolutions thereof. The first detector is connected to the output of a first counter between which is interposed a gate means. The second detector means is connected to the input of a second counter, the output of which is connected to the input of the gate, and which provides a signal for controlling the gate. An indicator is connected to the first counter to record the value received by the counter.
Inventors
- 👤 Pavel Seidl
- 👤 Milos Mladek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:43
CPC Classifications
D; D01; D01H; D01H13/00; D01H13/32; G; G01; G01N; G01N33/00; G01N33/36; G01N33/365
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
184 words
A system for measuring and indicating the twist factor of spun yarn formed in an open end spinning unit having feed means for delivering fibrous material, a rotary twisting means for spinning the fibers into a yarn, and a rotary withdrawing means for taking up the yarn comprising, first detector means located at said twist means for sensing the revolution of said twist means and providing an output having a value proportional to the number of revolutions thereof a second detecting means located at said withdrawing means for sensing the revolution of the withdrawing means and providing an output having a value proportional to the number of revolutions thereof, said first detecting means being connected to the input of a first counter, a gate means interposed between said first detector and said first counter, said second detecting means being connected to the input of a second counter, the output of which is connected to the input of said gate, and which provides a signal for controlling said gate, and an indicator connected to said first counter to record the value received by said counter.
Claim 2
Independent Claim
184 words
A system for measuring and indicating the twist factor of spun yarn formed in an open end spinning unit having feed means for delivering fibrous material, a rotary twisting means for spinning the fibers into a yarn, and a rotary withdrawing means for taking up the yarn comprising, first detector means located at said twist means for sensing the revolution of said twist means and providing an output having a value proportional to the number of revolutions thereof a second detecting means located at said withdrawing means for sensing the revolution of the withdrawing means and providing an output having a value proportional to the number of revolutions thereof, said first detecting means being connected to the input of a first counter, a gate means interposed between said first detector and said first counter, said second detecting means being connected to the input of a second counter, the output of which is connected to the input of said gate, and which provides a signal for controlling said gate, and an indicator connected to said first counter to record the value received by said counter.
Claim 3
Independent Claim
184 words
A system for measuring and indicating the twist factor of spun yarn formed in an open end spinning unit having feed means for delivering fibrous material, a rotary twisting means for spinning the fibers into a yarn, and a rotary withdrawing means for taking up the yarn comprising, first detector means located at said twist means for sensing the revolution of said twist means and providing an output having a value proportional to the number of revolutions thereof a second detecting means located at said withdrawing means for sensing the revolution of the withdrawing means and providing an output having a value proportional to the number of revolutions thereof, said first detecting means being connected to the input of a first counter, a gate means interposed between said first detector and said first counter, said second detecting means being connected to the input of a second counter, the output of which is connected to the input of said gate, and which provides a signal for controlling said gate, and an indicator connected to said first counter to record the value received by said counter.
Claim 4
Independent Claim
184 words
A system for measuring and indicating the twist factor of spun yarn formed in an open end spinning unit having feed means for delivering fibrous material, a rotary twisting means for spinning the fibers into a yarn, and a rotary withdrawing means for taking up the yarn comprising, first detector means located at said twist means for sensing the revolution of said twist means and providing an output having a value proportional to the number of revolutions thereof a second detecting means located at said withdrawing means for sensing the revolution of the withdrawing means and providing an output having a value proportional to the number of revolutions thereof, said first detecting means being connected to the input of a first counter, a gate means interposed between said first detector and said first counter, said second detecting means being connected to the input of a second counter, the output of which is connected to the input of said gate, and which provides a signal for controlling said gate, and an indicator connected to said first counter to record the value received by said counter.
Claim 5
Dependent Claim
15 words
The system according to claim 1 wherein said second counter includes a decade number switch.
Claim 6
Dependent Claim
11 words
The system according to claim 1 wherein said detectors are contactless.
References Cited (Backward Citations)
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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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |