US3834148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ringless spinning apparatus
Assignee: Toyota Industries Corp
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Filing: 1973-03-22
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Granted: 1974-09-10
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Expires: 1993-03-22
Abstract
Abstract In a ringless spinning apparatus of the type comprising a feed roller rotatable about its vertical axis for feeding fibrous materials, an opening roller rotatable about its vertical axis and provided with a plurality of saw tooth wires wound circumferentially around the peripheral surface thereof for opening the fibrous materials fed by said feed roller, channel means arranged adjacent the peripheral surface for taking off the opened fibrous materials from the opening roller and transferring them by the action of a jet of air passing therein, and a rotary spinning chamber for collecting and spinning the opened fibrous materials transferred thereinto from the channel means, the latter converges toward the spinning chamber by tapering at least one of the upper and lower walls thereof, while the sectional area of the channel means is progressively reduced toward the spinning chamber at the downstream side of the opening roller.
Inventors
- 👤 O Yuasa
- 👤 W Sakurai
- 👤 T Igarashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:29
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/38; D01H4/30; D01H4/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
162 words
A ringless spinning apparatus comprising a feed roller rotatable about its axis for feeding fibrous materials, an opening roller rotatable about its axis and provided with a plurality of saw-tooth wires wound circumferentially around the peripheral surface thereof for opening the fibrous materials fed By said feed roller, channel means arranged adjacent said peripheral surface for taking off the opened fibrous materials from said opening roller and transferring them by the action of a jet of air passing therethrough, and a rotary spinning chamber for collecting and spinning the opened fibrous materials transferred thereinto from said channel means, wherein the latter converges toward said spinning chamber by a taper in at least one of the upper and lower walls thereof, and wherein the crosssectional area of said channel means is smaller at a portion remote from the axis of said spinning chamber than at a portion closer to said axis, to thereby form a rounded triangular crosssectional shape at the outlet thereof.
Claim 2
Dependent Claim
162 words
A ringless spinning apparatus comprising a feed roller rotatable about its axis for feeding fibrous materials, an opening roller rotatable about its axis and provided with a plurality of saw-tooth wires wound circumferentially around the peripheral surface thereof for opening the fibrous materials fed By said feed roller, channel means arranged adjacent said peripheral surface for taking off the opened fibrous materials from said opening roller and transferring them by the action of a jet of air passing therethrough, and a rotary spinning chamber for collecting and spinning the opened fibrous materials transferred thereinto from said channel means, wherein the latter converges toward said spinning chamber by a taper in at least one of the upper and lower walls thereof, and wherein the crosssectional area of said channel means is smaller at a portion remote from the axis of said spinning chamber than at a portion closer to said axis, to thereby form a rounded triangular crosssectional shape at the outlet thereof.
Claim 3
Dependent Claim
61 words
A ringless spinning apparatus as defined in claim 1, wherein the free end of said opening roller is spaced apart from the axis of rotation of said spinning chamber, and one of the upper and lower walls of said channel means, remote from the axis of rotation of the latter, is inclined toward said axis of rotation of the spinning chamber.
Claim 4
Dependent Claim
50 words
A ringless spinning apparatus as defined in claim 1, wherein a part of the walls of said channel means is formed by a selected one of detachable block elements of varying shapes which are selectively exchangeably fixed to said channel means to form a fiber transfer channel of predetermined shape.
Claim 5
Dependent Claim
174 words
A ringless spinning apparatus comprising a feed roller rotatable about its vertical axis for feeding fibrous materials, an opening roller rotatable about its vertical axis and provided with a plurality of saw-tooth wires wound circumferentially around the peripheral surface thereof for opening the fibrous materials fed by said feed roller, channel means arranged adjacent said peripheral surface for taking off the opened fibrous materials from said opening roller and transferring them by the action of a jet of air passing therein, and a rotary spinning chamber for collecting and spinning the open fibrous materials transferred thereinto from said channel means, wherein the latter converges toward said spinning chamber by a taper in at least one of the upper and lower walls thereof, and the sectional area of said channel means is progressively reduced toward said spinning chamber at a portion on the downstream side of said opening roller, and further wherein the lower wall of said channel means is tapered toward said spinning chamber while said saw-tooth wires are wound in a counterclockwise direction.
Claim 6
Dependent Claim
174 words
A ringless spinning apparatus comprising a feed roller rotatable about its vertical axis for feeding fibrous materials, an opening roller rotatable about its vertical axis and provided with a plurality of saw-tooth wires wound circumferentially around the peripheral surface thereof for opening the fibrous materials fed by said feed roller, channel means arranged adjacent said peripheral surface for taking off the opened fibrous materials from said opening roller and transferring them by the action of a jet of air passing therein, and a rotary spinning chamber for collecting and spinning the open fibrous materials transferred thereinto from said channel means, wherein the latter converges toward said spinning chamber by a taper in at least one of the upper and lower walls thereof, and the sectional area of said channel means is progressively reduced toward said spinning chamber at a portion on the downstream side of said opening roller, and further wherein the lower wall of said channel means is tapered toward said spinning chamber while said saw-tooth wires are wound in a counterclockwise direction.
Claim 7
Dependent Claim
174 words
A ringless spinning apparatus comprising a feed roller rotatable about its vertical axis for feeding fibrous materials, an opening roller rotatable about its vertical axis and provided with a plurality of saw-tooth wires wound circumferentially around the peripheral surface thereof for opening the fibrous materials feb by said feed roller, channel means arranged adjacent said peripheral surface for taking off the opened fibrous materials from said opening roller and transferring them by the action of a jet of air passing therein, and a rotary spinning chamber for collecting and spinning the opened fibrous materials transferred thereinto from said channel means, wherein the latter converges toward said spinning chamber by a taper in at least one of the upper and lower walls thereof, and the sectional area of said channel means is progressively reduced toward said spinning chamber at a portion on the downstream side of said opening roller, and further wherein the upper wall of said channel means is tapered toward said spinning chamber while said saw-tooth wires are wound in a clockwise direction.
Claim 8
Dependent Claim
174 words
A ringless spinning apparatus comprising a feed roller rotatable about its vertical axis for feeding fibrous materials, an opening roller rotatable about its vertical axis and provided with a plurality of saw-tooth wires wound circumferentially around the peripheral surface thereof for opening the fibrous materials feb by said feed roller, channel means arranged adjacent said peripheral surface for taking off the opened fibrous materials from said opening roller and transferring them by the action of a jet of air passing therein, and a rotary spinning chamber for collecting and spinning the opened fibrous materials transferred thereinto from said channel means, wherein the latter converges toward said spinning chamber by a taper in at least one of the upper and lower walls thereof, and the sectional area of said channel means is progressively reduced toward said spinning chamber at a portion on the downstream side of said opening roller, and further wherein the upper wall of said channel means is tapered toward said spinning chamber while said saw-tooth wires are wound in a clockwise direction.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |