US3570339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn handling method and apparatus
Assignee: Leesona Corp
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Filing: 1969-02-06
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Granted: 1971-03-16
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Expires: 1989-02-06
Abstract
Abstract An improved aspirator-shear unit for rapidly moving strand of yarn in which an aspirator nozzle is arranged with its axis in closely proximate more or less parallel relation to the yarn path, a fixed shear blade is situated laterally between the nozzle opening and the yarn, and a movable snubnosed shear blade is projected from an inoperative position on the opposite side of the yarn path from the aspirator nozzle and fixed blade across the yarn path into shearing relating with said fixed blade and finally to a deflecting position with its leading edge generally aligned with the nozzle opening. Preferably the aspirator nozzle axis is inclined at a small angle with respect to the yarn path to reduce the clearance from the yarn path required to physically accommodate the nozzle.
Inventors
- 👤 Henry A Vandersip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:37
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/70; B65H54/71; B65H54/86; B65H54/88; B65H2701/00; B65H2701/30; B65H2701/31; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0448; Y10T83/0453; Y10T83/202; Y10T83/2066; Y10T83/207
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
81 words
Apparatus for handling an advancing strand associated a predetermined path comprising, strand receiving means arranged in closely spaced relationship to the strand path, said strand receiving means including an opening for reception of the strand, said opening being disposed essentially parallel to said strand path; operative means for severing said strand and deflecting the advancing strand toward said strand receiving means for reception thereby, and means for creating a zone of negative pressure at said opening to attract said strand therein.
Claim 2
Dependent Claim
81 words
Apparatus for handling an advancing strand associated a predetermined path comprising, strand receiving means arranged in closely spaced relationship to the strand path, said strand receiving means including an opening for reception of the strand, said opening being disposed essentially parallel to said strand path; operative means for severing said strand and deflecting the advancing strand toward said strand receiving means for reception thereby, and means for creating a zone of negative pressure at said opening to attract said strand therein.
Claim 3
Dependent Claim
18 words
Apparatus as set forth in claim 1 wherein said operative means includes shear means for severing the strand.
Claim 4
Dependent Claim
25 words
Apparatus as set forth in claim 2 wherein said operative means further includes strand pusher means for deflecting the strand toward said strand receiving means.
Claim 5
Dependent Claim
140 words
Apparatus for handling an advancing strand moving along a predetermined path, comprising an aspirator having a mouth and an outlet arranged with its axis extending in generally parallel closely spaced relation to the strand path, and strand shearing means including a fixed blade disposed intermediate said aspirator mouth and the strand path substantially at the level of said mouth, a movable blade adapted to be reciprocated along a straight line generally transverse to the nozzle axis from an inoperative position on the opposite side of the strand path from the fixed blade, past the fixed blade to sever the strand, to an operative position with the blade end in nonobstructing adjacent relation to the nozzle mouth, the severed strand end thus being positively deflected by the movable blade into the nozzle mouth, and actuating means for reciprocating said movable blade.
Claim 6
Dependent Claim
140 words
Apparatus for handling an advancing strand moving along a predetermined path, comprising an aspirator having a mouth and an outlet arranged with its axis extending in generally parallel closely spaced relation to the strand path, and strand shearing means including a fixed blade disposed intermediate said aspirator mouth and the strand path substantially at the level of said mouth, a movable blade adapted to be reciprocated along a straight line generally transverse to the nozzle axis from an inoperative position on the opposite side of the strand path from the fixed blade, past the fixed blade to sever the strand, to an operative position with the blade end in nonobstructing adjacent relation to the nozzle mouth, the severed strand end thus being positively deflected by the movable blade into the nozzle mouth, and actuating means for reciprocating said movable blade.
Claim 7
Dependent Claim
26 words
The apparatus of claim 4 wherein said aspirator is oriented with its axis converging with the strand path at an angle not greater than about 20*.
Claim 8
Dependent Claim
47 words
The apparatus of claim 4 wherein said movable shear blade comprises a solid block having its end face adjacent the strand path substantially parallel with that path, one edge of said end face cooperating with said fixed blade to sever the strand upon movement of the blade.
Claim 9
Dependent Claim
63 words
The apparatus of claim 4 wherein said fixed blade has a top surface adjacent the path of the movable blade which terminates in a cutting edge adjacent the strand path, said surface being inclined downwardly at a slight angle from said cutting edge to reduce the friction encountered by the severed strand end in moving from the cutting edge to the nozzle mouth.
Claim 10
Dependent Claim
36 words
The apparatus of claim 7 wherein said fixed blade has a front surface adjacent the strand path, said front surface also being inclined aT a slight angle from said cutting edge away from the strand path.
Claim 11
Dependent Claim
21 words
The apparatus as in claim 6 wherein the solid shear block moves along a fixed track defined by spaced parallel rails.
Claim 12
Dependent Claim
24 words
The apparatus of claim 9 wherein said rails restrain the solid shear block against movement in any direction other than along said reciprocating path.
Claim 13
Dependent Claim
39 words
The apparatus of claim 10 wherein said block is rigidly connected to a spaced guide shoe also moving along said fixed track and restrained by said rails, said shoe preventing said block from skewing and binding between the rails.
Claim 14
Independent Claim
104 words
A method of handling an advancing strand moving along a predetermined path from a supply source comprising the steps of, providing strand receiving means having an opening therein for the reception of said strand, arranging said strand receiving means closely adjacent to said strand path with the opening essentially parallel to said strand path, severing the advancing strand to provide a free strand end from said supply while deflecting the strand end into substantial alignment with said opening to thus permit the linear momentum in the advancing strand to thrust the strand end into said opening, and simultaneously attracting the strand into said opening.
Claim 15
Independent Claim
104 words
A method of handling an advancing strand moving along a predetermined path from a supply source comprising the steps of, providing strand receiving means having an opening therein for the reception of said strand, arranging said strand receiving means closely adjacent to said strand path with the opening essentially parallel to said strand path, severing the advancing strand to provide a free strand end from said supply while deflecting the strand end into substantial alignment with said opening to thus permit the linear momentum in the advancing strand to thrust the strand end into said opening, and simultaneously attracting the strand into said opening.
Claim 16
Dependent Claim
22 words
The method according to claim 12 including the step of a zone of negative pressure at said opening for attracting the strand.
Claim 17
Dependent Claim
23 words
Apparatus as set forth in claim 3 wherein said opening is disposed at an angle not exceeding 20* relative to said strand path.
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |