US3720384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn control device
Assignee: Individual
•
Filing: 1971-05-27
•
Granted: 1973-03-13
•
Expires: 1991-05-27
Abstract
Abstract A yarn feeder having a slotted spool body on which yarn is wound for forming a yarn reserve. Winding means associated with the spool body selectively permits further windings of yarn to be wound onto said spool body. The yarn feeder includes sensing means associated with the yarn reserve and the slots for causing further yarn windings to be wound on the spool body whenever the yarn reserve falls below a predetermined minimum size. The sensing means includes a nozzle disposed adjacent the spool body for directing an air stream through the slots, which slots are partially covered by the windings of the yarn reserve so that the magnitude of the air stream passing through the slots is related to the number of windings contained in the yarn reserve. The sensing means also includes a device disposed adjacent the other end of the slots and responsive to the magnitude of the air stream flowing through the slots for controlling the winding means. The responsive device, in the disclosed embodiment, includes an operating member responsive to the air stream and connected to a switch for controlling the operation thereof, which in turn controls the relative rotation between the spool body and the winding means.
Inventors
- 👤 K Rosen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:23
CPC Classifications
D; D04; D04B; D04B15/00; D04B15/38; D04B15/48; D04B15/482
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
295 words
A device for controlling the feeding of yarn to a textile machine, comprising: a spool body; winding means for winding yarn on said spool body in response to relative rotation between said spool body and said winding means to form a yarn reserve on said spool body; electrical circuitry means for controlling relative rotation between said spool body and said winding means for controlling the winding-on operation; and sensing means for controlling the size of said yarn reserve under the control of the quantity of yarn wound on the spool body, said sensing means including: a. opening means formed in and extending through said spool body in the region of said yarn reserve whereby the yarn elements contained in said yarn reserve extend across said opening means, b. nozzle means positioned on one side of said yarn reserve and disposed adjacent said spool body for directing a stream of gaseous fluid toward one end of said opening means, and c. responsive means connected to said electrical circuitry means and positioned on the other side of said yarn reserve and adjacent the other end of said opening means for controlling the relative rotation between said winding means and said spool body in response to the flow of gaseous fluid through said opening means, said responsive means including a movable operating member disposed in the path of the gaseous fluid after it flows through said opening means and said yarn reserve, said operating member being positioned so that the flow impinges thereon and moves said operating member from a first to a second position in response to flow of a predetermined magnitude through said opening means and said yarn reserve for activating said electrical circuitry means to cause additional yarn to be wound on said spool body.
Claim 2
Independent Claim
295 words
A device for controlling the feeding of yarn to a textile machine, comprising: a spool body; winding means for winding yarn on said spool body in response to relative rotation between said spool body and said winding means to form a yarn reserve on said spool body; electrical circuitry means for controlling relative rotation between said spool body and said winding means for controlling the winding-on operation; and sensing means for controlling the size of said yarn reserve under the control of the quantity of yarn wound on the spool body, said sensing means including: a. opening means formed in and extending through said spool body in the region of said yarn reserve whereby the yarn elements contained in said yarn reserve extend across said opening means, b. nozzle means positioned on one side of said yarn reserve and disposed adjacent said spool body for directing a stream of gaseous fluid toward one end of said opening means, and c. responsive means connected to said electrical circuitry means and positioned on the other side of said yarn reserve and adjacent the other end of said opening means for controlling the relative rotation between said winding means and said spool body in response to the flow of gaseous fluid through said opening means, said responsive means including a movable operating member disposed in the path of the gaseous fluid after it flows through said opening means and said yarn reserve, said operating member being positioned so that the flow impinges thereon and moves said operating member from a first to a second position in response to flow of a predetermined magnitude through said opening means and said yarn reserve for activating said electrical circuitry means to cause additional yarn to be wound on said spool body.
Claim 3
Independent Claim
295 words
A device for controlling the feeding of yarn to a textile machine, comprising: a spool body; winding means for winding yarn on said spool body in response to relative rotation between said spool body and said winding means to form a yarn reserve on said spool body; electrical circuitry means for controlling relative rotation between said spool body and said winding means for controlling the winding-on operation; and sensing means for controlling the size of said yarn reserve under the control of the quantity of yarn wound on the spool body, said sensing means including: a. opening means formed in and extending through said spool body in the region of said yarn reserve whereby the yarn elements contained in said yarn reserve extend across said opening means, b. nozzle means positioned on one side of said yarn reserve and disposed adjacent said spool body for directing a stream of gaseous fluid toward one end of said opening means, and c. responsive means connected to said electrical circuitry means and positioned on the other side of said yarn reserve and adjacent the other end of said opening means for controlling the relative rotation between said winding means and said spool body in response to the flow of gaseous fluid through said opening means, said responsive means including a movable operating member disposed in the path of the gaseous fluid after it flows through said opening means and said yarn reserve, said operating member being positioned so that the flow impinges thereon and moves said operating member from a first to a second position in response to flow of a predetermined magnitude through said opening means and said yarn reserve for activating said electrical circuitry means to cause additional yarn to be wound on said spool body.
Claim 4
Independent Claim
295 words
A device for controlling the feeding of yarn to a textile machine, comprising: a spool body; winding means for winding yarn on said spool body in response to relative rotation between said spool body and said winding means to form a yarn reserve on said spool body; electrical circuitry means for controlling relative rotation between said spool body and said winding means for controlling the winding-on operation; and sensing means for controlling the size of said yarn reserve under the control of the quantity of yarn wound on the spool body, said sensing means including: a. opening means formed in and extending through said spool body in the region of said yarn reserve whereby the yarn elements contained in said yarn reserve extend across said opening means, b. nozzle means positioned on one side of said yarn reserve and disposed adjacent said spool body for directing a stream of gaseous fluid toward one end of said opening means, and c. responsive means connected to said electrical circuitry means and positioned on the other side of said yarn reserve and adjacent the other end of said opening means for controlling the relative rotation between said winding means and said spool body in response to the flow of gaseous fluid through said opening means, said responsive means including a movable operating member disposed in the path of the gaseous fluid after it flows through said opening means and said yarn reserve, said operating member being positioned so that the flow impinges thereon and moves said operating member from a first to a second position in response to flow of a predetermined magnitude through said opening means and said yarn reserve for activating said electrical circuitry means to cause additional yarn to be wound on said spool body.
Claim 5
Dependent Claim
80 words
A device according to claim 1, further including drive means connected to said electrical circuitry means and connected to one of said spool body and said winding means for causing rotation thereof, and said responsive means including electrical switch means for controlling said drive means, said operating member being connected to said switch means for moving same between open and closed positions in response to movement of said operating member by said flow of gaseous fluid through said opening means.
Claim 6
Dependent Claim
44 words
A device according to claim 2, wherein said nozzle means is disposed exteriorly of said spool body and has a discharge orifice disposed adjacent the external periphery of said spool body, and said switch means being disposed in the interior of said spool body.
Claim 7
Dependent Claim
94 words
A device according to claim 3, wherein said operating member is maintained in said first position and said switch means is maintained in said open position whenever the yarn reserve on said spool body exceeds a predetermined minimum, said operating member being moved to said second position to cause closing of said switch means whenever said yarn reserve falls below said predetermined minimum and uncovers a greater portion of said opening means so as to permit an increased flow of gaseous fluid through said opening means to impinge on and move said operating member.
Claim 8
Dependent Claim
54 words
A device according to claiM 1, wherein said opening means includes a plurality of closely adjacent, narrow, circumferentially spaced slots formed in and extending radially through the wall of said spool body, said slots being disposed in the region of the yarn reserve so that the slots are partially covered by the yarn windings.
Claim 9
Dependent Claim
133 words
A device according to claim 5, wherein said nozzle means is connected to a source of compressed air and has a discharge orifice disposed closely adjacent one radial end of said slots for causing a stream of air to flow radially through said slots, the magnitude of the stream of air flowing radially through said slots being dependent upon the magnitude of the area of the slots left uncovered by said yarn reserve, and said operating member being movably mounted directly adjacent the other radial end of said slots whereby the air stream passing through said slots impinges on said operating member, and means coacting with said operating member for permitting movement thereof from said first position to said second position when the air stream passing through said slots exceeds a predetermined minimum.
Claim 10
Dependent Claim
32 words
A device according to claim 6, wherein said slots are substantially parallel to one another and are individually elongated in a direction substantially parallel with the longitudinal axis of said spool body.
Claim 11
Dependent Claim
21 words
A device according to claim 1, wherein said spool body is stationarily mounted, and said winding means is mounted for rotation.
References Cited (Backward Citations)
US2438365A
Cited
US3225446A
Cited
US3411548A
Cited
US3455341A
Cited
US3419225A
Cited
US3490710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |