US3850377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for readying wound bobbins
Assignee: Leesona Corp
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Filing: 1973-07-24
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Granted: 1974-11-26
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Expires: 1993-07-24
Abstract
Abstract Apparatus for readying wound bobbins having a bore axially therethrough is described. The apparatus includes support means mounting the wound bobbin for delivery from a reserve position to an active unwinding position. Means are provided to create a zone of negative pressure through the bore of the bobbin when the wound bibbin is disposed in its reserve position. This zone of negative pressure acts to induce the outer yarn end of the wound bobbin into the bore when the yarn end is positioned proximate to the bore. A perforated member is provided adjacent the lower end of the bore. This member serves to control the extent to which the outer yarn end is drawn into the bore. This member also serves as a surface on which the yarn may be formed into a bunch if a bunch is desired and controls the amount of yarn drawn into the bore.
Inventors
- 👤 T Pitts
- 👤 W Stoppard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:14
CPC Classifications
B; B65; B65H; B65H67/00; B65H67/02; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
108 words
Apparatus for readying a bobbin wound with a supply of yarn thereon and having a bore axially therethrough comprising, carrier means for supporting said bobbin in a reserve position and an active unwinding position, means operable to provide a zone of negative pressure through the bore of said bobbin when said bobbin is in said reserve position, said zone of negative pressure acting to induce the outer unwinding end of the yarn on the bobbin into the bore, and means for actuating said carrier means to move said bobbin from said reserve position to said active unwinding position after the yarn end has been deposited in said bore.
Claim 2
Dependent Claim
108 words
Apparatus for readying a bobbin wound with a supply of yarn thereon and having a bore axially therethrough comprising, carrier means for supporting said bobbin in a reserve position and an active unwinding position, means operable to provide a zone of negative pressure through the bore of said bobbin when said bobbin is in said reserve position, said zone of negative pressure acting to induce the outer unwinding end of the yarn on the bobbin into the bore, and means for actuating said carrier means to move said bobbin from said reserve position to said active unwinding position after the yarn end has been deposited in said bore.
Claim 3
Dependent Claim
63 words
Apparatus as set forth in claim 1 wherein said carrier means includes support means for said bobbin, said support means having a bore therethrough, the bore through said support means being in alignment with the bore through said bobbin supported thereon when in said reserve position, said support means when in said reserve position having its bore connected with said negative pressure zone.
Claim 4
Dependent Claim
35 words
Apparatus as set forth in claim 1 wherein said actuating means is operable to move said carrier means in a predetermined path to dispose said bobbin sequentially in said reserve position and active unwinding position.
Claim 5
Dependent Claim
25 words
Apparatus as set forth in claim 1 including controlling means for confining the movement of the yarn into said bore to a predetermined zone therein.
Claim 6
Dependent Claim
31 words
Apparatus as set forth in claim 4 wherein said controlling means including a perforate element having apertures therein smaller in size than the diameter of the yarn wound on said bobbin.
Claim 7
Dependent Claim
135 words
Apparatus as set forth in claim 5 wherein said actuating means moves said carrier means along a predetermined path to move said bobbin from said reserve position to said active unwinding position, a fluid port along said predetermined path and proximate said reserve position, said port being connected to said means for providing said zone of negative pressure, said carrier means including support means having a bore therethrough, said bobbin being mounted on said support means with the bore of the support means being aligned with said port when said support means is in said reserve position, the negative pressure being communicated through the bore in said support means to the bore in said bobbin to induce the outer unwinding end of yarn on said bobbin into said bobbin bore and onto said perforate element.
Claim 8
Dependent Claim
25 words
Apparatus as set forth in claim 6 including a suction cup affixed at one end of said support means for sealing engagement around said port.
Claim 9
Dependent Claim
32 words
Apparatus as set forth in claim 2 wherein said bobbin has a base provided with a ferrule of conductive material, and said support means includes a magnetic portion engageable with said ferrule.
Claim 10
Dependent Claim
63 words
Apparatus as set forth in claim 2 wherein said carrier is adapted to mount a plurality of said support means at spaced locations thereon, each said support means being sequentially shifted from a first position where a wound bobbin thereon is disposed in said active unwinding position to a further position where it is adapted to receive a reserve bobbin wound with yarn.
Claim 11
Dependent Claim
59 words
Apparatus as set forth in claim 9 wherein a plurality of fluid ports are provided at said reserve position, each said fluid port being connected to said zone of negative pressure, said reserve position being adapted to receive a plurality of said support means, each said support means being aligned with a fluid port when in said reserve position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |