US3837052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of drawing moving threads or yarns into narrow channels and apparatus therefor
Assignee: BASF SE
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Filing: 1972-12-20
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Granted: 1974-09-24
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Expires: 1992-12-20
Abstract
Abstract A method of drawing moving threads or yarns, preferably carpet yarns, into narrow channels and particularly threading channels of texturizing apparatus, in which method the yarn is drawn into said channel at a velocity of from 200 to 3,500 m/min by means of a wire loop passing through said channel, and at the same time or shortly thereafter the said yarn is severed at a point between said wire loop and a suction pistol adapted to take up the moving thread before it is drawn into said channel. The invention also relates to apparatus for carrying out said method.
Inventors
- 👤 W Martin
- 👤 U Schwoerer
- 👤 W Bauer
- 👤 D Staufer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:51
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/168; B; B65; B65H; B65H51/00; B65H51/16; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
81 words
A method of drawing a moving yarn into a narrow channel, said method comprising: drawing the yarn into said channel, while said yarn travels at a velocity of from 200 to 3,500 m/min, by means of a wire loop passing through said channel; and at the same time or shortly thereafter, severing the yarn at a point between the wire loop and a suction pistol into which the moving yarn had been taken up before it was drawn into said channel.
Claim 2
Independent Claim
81 words
A method of drawing a moving yarn into a narrow channel, said method comprising: drawing the yarn into said channel, while said yarn travels at a velocity of from 200 to 3,500 m/min, by means of a wire loop passing through said channel; and at the same time or shortly thereafter, severing the yarn at a point between the wire loop and a suction pistol into which the moving yarn had been taken up before it was drawn into said channel.
Claim 3
Dependent Claim
32 words
A method as claimed in claim 1, wherein the yarn is drawn into said channel with the aid of means for accelerating the withdrawal movement of the wire loop through said channel.
Claim 4
Dependent Claim
31 words
A method as claimed in claim 1 wherein the yarn is severed at a point between the wire loop and the suction pistol by means of a magnetically operated thread cutter.
Claim 5
Dependent Claim
28 words
A method of drawing moving yarn into a narrow channel as claimed in claim 1 in which the channel is the threading channel of a yarn texturizing apparatus.
Claim 6
Independent Claim
95 words
An apparatus for drawing a moving yarn into a narrow channel, said apparatus comprising a wire loop attached to a pin as a yarn engaging assembly for insertion in said narrow channel, a quick-grip chuck for aCcommodating and holding said wire loop and pin, a bolt carrying said chuck within a guide barrel having compression spring means for accelerating the movement of said bolt together with the chuck and yarn engaging assembly in relationship to said barrel, a cocking lever for compressing the compression spring and an electromagnetically actuated trigger for releasing said compressed spring.
Claim 7
Independent Claim
95 words
An apparatus for drawing a moving yarn into a narrow channel, said apparatus comprising a wire loop attached to a pin as a yarn engaging assembly for insertion in said narrow channel, a quick-grip chuck for aCcommodating and holding said wire loop and pin, a bolt carrying said chuck within a guide barrel having compression spring means for accelerating the movement of said bolt together with the chuck and yarn engaging assembly in relationship to said barrel, a cocking lever for compressing the compression spring and an electromagnetically actuated trigger for releasing said compressed spring.
Claim 8
Dependent Claim
32 words
An apparatus as claimed in claim 5, which is mounted on a trolley together with a magnetically actuated thread cutter, a thread guide and a clamp adapted to receive a suction pistol.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |