US4407336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thread-feed device for textile machines and method of operation
Assignee: Ruti Machinery Works Ltd
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Filing: 1981-06-16
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Granted: 1983-10-04
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Expires: 2001-06-16
Abstract
Abstract There is disclosed a thread-feed device having a stationary winder drum storing a supply of thread which can be wound-on by means of a rotatable winder arm and removed overhead from the winder drum, and having a first monitoring device which automatically controls the rotary movement of the winder arm as a function of the length of the supply of thread formed. Within the region of the withdrawal end of the winder drum there is arranged a second monitoring device which gives off a first signal to a control unit upon each pass of the thread through its monitoring region during the withdrawal of the thread. The control unit counts the first signals and, as soon as their number reaches a predetermined adjustable value which corresponds to the desired required length of thread, there is given off a second signal by which a thread gripper is actuated so that the thread-feed device delivers precisely measured lengths of thread, such as required for instance for the filling insertion on jet looms.
Inventors
- 👤 Alois Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:32
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/34; D03D47/36; D03D47/361; D03D47/367; B; B65; B65H; B65H2557/00; B65H2557/30; B65H2557/33
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
180 words
A thread-feed device for textile machines having a stationary winder drum onto which a thread fed from a stationary winding bobbin can be wound by means of a rotatable winder arm for the formation of a thread supply and the thread supply formed can be withdrawn on top, and having a first detection device for automatically controlling the rotary movement of the winder arm as a function of the length of the supply of thread formed, characterized by: a. a second detection device arranged in the region of the withdrawal end of the winder drum to give a first signal upon each passage of the thread during its withdrawal through its monitoring region, b. a control unit arranged behind the second detection device for the counting of the first signals and the giving off of a second signal as soon as the number of first signals reaches a predetermined adjustable value corresponding to the required length of thread, and c. a thread gripper means which is operably connected to the control unit and can be controlled by the second signal.
Claim 2
Dependent Claim
180 words
A thread-feed device for textile machines having a stationary winder drum onto which a thread fed from a stationary winding bobbin can be wound by means of a rotatable winder arm for the formation of a thread supply and the thread supply formed can be withdrawn on top, and having a first detection device for automatically controlling the rotary movement of the winder arm as a function of the length of the supply of thread formed, characterized by: a. a second detection device arranged in the region of the withdrawal end of the winder drum to give a first signal upon each passage of the thread during its withdrawal through its monitoring region, b. a control unit arranged behind the second detection device for the counting of the first signals and the giving off of a second signal as soon as the number of first signals reaches a predetermined adjustable value corresponding to the required length of thread, and c. a thread gripper means which is operably connected to the control unit and can be controlled by the second signal.
Claim 3
Dependent Claim
23 words
The thread-feed device according to claim 1 characterized by the fact that the second detection device is formed by a photoelectric detection device.
Claim 4
Dependent Claim
267 words
A thread-feed device for textile machines having a stationary winder drum onto which a thread fed from a stationary winding bobbin can be wound by means of a rotatable winder arm for the formation of a thread supply and the thread supply formed can be withdrawn on top, and having a first detection device for automatically controlling the rotary movement of the winder arm as a function of the length of the supply of thread formed, characterized by: a. a second detection device arranged in the region of the withdrawal end of the winder drum to give a first signal upon each passage of the thread during its withdrawal through its monitoring region, b. a control unit arranged behind the second detection device for the counting of the first signals and the giving off of a second signal as soon as the number of first signals reaches a predetermined adjustable value corresponding to the required length of thread, c. a thread gripper means which is operably connected to the control unit and can be controlled by the second signal, the thread gripper means arranged fixed in space in the region of the withdrawal end of the winder drum and having an electromagnetically actuatable bolt which is movable against the cylindrical surface of the winder drum and in its active position forms a stop for the filling thread withdrawn, the said thread gripper means being arranged outside the winder drum and the winder drum is provided on its circumference with a recess for the entrance of the end of the bolt into the wall of the winder drum.
Claim 5
Dependent Claim
267 words
A thread-feed device for textile machines having a stationary winder drum onto which a thread fed from a stationary winding bobbin can be wound by means of a rotatable winder arm for the formation of a thread supply and the thread supply formed can be withdrawn on top, and having a first detection device for automatically controlling the rotary movement of the winder arm as a function of the length of the supply of thread formed, characterized by: a. a second detection device arranged in the region of the withdrawal end of the winder drum to give a first signal upon each passage of the thread during its withdrawal through its monitoring region, b. a control unit arranged behind the second detection device for the counting of the first signals and the giving off of a second signal as soon as the number of first signals reaches a predetermined adjustable value corresponding to the required length of thread, c. a thread gripper means which is operably connected to the control unit and can be controlled by the second signal, the thread gripper means arranged fixed in space in the region of the withdrawal end of the winder drum and having an electromagnetically actuatable bolt which is movable against the cylindrical surface of the winder drum and in its active position forms a stop for the filling thread withdrawn, the said thread gripper means being arranged outside the winder drum and the winder drum is provided on its circumference with a recess for the entrance of the end of the bolt into the wall of the winder drum.
Claim 6
Dependent Claim
25 words
The thread-feed device according to claim 3 characterized by the fact that a plurality of second detection devices and associated thread gripper means is provided.
Claim 7
Dependent Claim
35 words
The thread-feed device according to claim 4 characterized by the fact that the second detection devices and thread gripper means are arranged distributed uniformly along a circumferential circle on the wall of the winder drum.
Claim 8
Dependent Claim
28 words
The thread-feed device according to claim 5 characterized by the fact that the number of second detection devices and thread gripper means is between 3 and 10 each.
Claim 9
Dependent Claim
31 words
The thread-feed device according to claim 6 characterized by the fact that the second detection devices and thread gripper means are supported by a ring-shaped carrier which surrounds the winder drum.
Claim 10
Dependent Claim
19 words
The thread-feed device according to claim 7 characterized by the fact that the ring-shaped carrier forms a balloon-breaker ring.
Claim 11
Dependent Claim
23 words
The thread-feed device according to claim 3 characterized by the fact that the second detection device is formed by a photoelectric detection device.
Claim 12
Dependent Claim
25 words
The thread-feed device according to claim 9 characterized by the fact that a plurality of second detection devices and associated thread gripper means is provided.
Claim 13
Dependent Claim
35 words
The thread-feed device according to claim 10 characterized by the fact that the second detection devices and thread gripper means are arranged distributed uniformly along a circumferential circle on the wall of the winder drum.
Claim 14
Dependent Claim
28 words
The thread-feed device according to claim 11 characterized by the face that the number of second detection devices and thread gripper means is between 3 and 10 each.
Claim 15
Dependent Claim
31 words
The thread-feed device according to claim 12 characterized by the fact that the second detection devices and thread gripper means are supported by a ring-shaped carrier which surrounds the winder drum.
Claim 16
Dependent Claim
19 words
The thread-feed device according to claim 13 characterized by the fact that the ring-shaped carrier forms a balloon-breaker ring.
Claim 17
Independent Claim
282 words
A method of operating a thread-feed device for textile machines having a stationry winder drum onto which a thread fed from a stationary winding bobbin can be wound by means of a rotatable winder arm for the formation of a thread supply and the thread supply formed can be withdrawn on top, and having a first detection device for automatically controlling the rotary movement of the winder arm as a function of the length of the supply of thread formed, characterized by: a. a second detection device arranged in the region of the withdrawal end of the winder drum to give a first signal upon each passage of the thread during its withdrawal through its monitoring region, b. a control unit arranged behind the second detection device for the counting of the first signals and the giving off of a second signal as soon as the number of first signals reaches a predetermined adjustable value corresponding to the required length of thread, and c. a thread gripper means which is operably connected to the control unit and can be controlled by the second signal; said device being operated to determine how many thread turns on the winder drum correspond to the length of thread required for a filling insertion on a loom by adjusting the first detection device for the control of the rotary movement of the winder arm to a number which is greater than the required number n of the turns, and so adjusting the control unit that upon the arrival of the (n-1)th first signal it gives off a second signal so that the thread gripper means is activated between the (n-1)th and the nth pass of the thread.
Claim 18
Independent Claim
282 words
A method of operating a thread-feed device for textile machines having a stationry winder drum onto which a thread fed from a stationary winding bobbin can be wound by means of a rotatable winder arm for the formation of a thread supply and the thread supply formed can be withdrawn on top, and having a first detection device for automatically controlling the rotary movement of the winder arm as a function of the length of the supply of thread formed, characterized by: a. a second detection device arranged in the region of the withdrawal end of the winder drum to give a first signal upon each passage of the thread during its withdrawal through its monitoring region, b. a control unit arranged behind the second detection device for the counting of the first signals and the giving off of a second signal as soon as the number of first signals reaches a predetermined adjustable value corresponding to the required length of thread, and c. a thread gripper means which is operably connected to the control unit and can be controlled by the second signal; said device being operated to determine how many thread turns on the winder drum correspond to the length of thread required for a filling insertion on a loom by adjusting the first detection device for the control of the rotary movement of the winder arm to a number which is greater than the required number n of the turns, and so adjusting the control unit that upon the arrival of the (n-1)th first signal it gives off a second signal so that the thread gripper means is activated between the (n-1)th and the nth pass of the thread.
Claim 19
Dependent Claim
72 words
The method of operating the thread-feed device defined by claim 15 using a plurality of m second detection devices and m thread gripper means, the control unit adjusted in such a manner that upon the arrival of the m(n-1)th first signal it gives off the second signal and does so to that one of the thread grippers at which the thread upon its following pass just exceeds the required length of thread.
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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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |