US3698442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weft controller usable for a weaving loom of weft propellent fluid jet type
Assignee: Enshu Ltd
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Filing: 1971-06-18
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Granted: 1972-10-17
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Expires: 1991-06-18
Abstract
Abstract A weft controller usable for a weft propellant fluid jet type weaving loom, whereon two sets of wefts are picked alternately, having two sets of control mechanisms for pulling back the wefts after picking, clamping the wefts during the pulling back and releasing the wefts during the picking and a single driving source for the two control mechanisms. Control actions of the two control mechanisms can be varied from each other as desired.
Inventors
- 👤 Toemon Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:13
CPC Classifications
D; D03; D03D; D03D47/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
201 words
An improved weft controller for use with fluid jet looms comprising, in combination: a fixed shaft secured to a stationary part of said loom; a sector disc swingably mounted on said fixed shaft; a cam rotatably mounted on a driving shaft which rotates one half cycle per one complete cycle rotation of a main driving shaft of said loom; a transmission mechanism for causing swinging of said sector disc about said fixed shaft upon rotation of said cam; the first and second long arms swingably mounted on said fixed shaft; a resilient member connected to said two long arms so as to resiliently hold them in a V-shaped mounting about said fixed shaft; stopper members disposed to said sector disc so as to cause swinging of said two long arms about said fixed shaft upon swinging of said sector disc; first and second weft clamping mechanisms mounted on said loom stationary part so as to be operated by said first and second long arms for an alternately timed resilient claMping of the first and second wefts; each of said long arms pulling back respective wefts with maximum employable receding length upon said swinging thereof when the corresponding clamping mechanism is effective.
Claim 2
Dependent Claim
201 words
An improved weft controller for use with fluid jet looms comprising, in combination: a fixed shaft secured to a stationary part of said loom; a sector disc swingably mounted on said fixed shaft; a cam rotatably mounted on a driving shaft which rotates one half cycle per one complete cycle rotation of a main driving shaft of said loom; a transmission mechanism for causing swinging of said sector disc about said fixed shaft upon rotation of said cam; the first and second long arms swingably mounted on said fixed shaft; a resilient member connected to said two long arms so as to resiliently hold them in a V-shaped mounting about said fixed shaft; stopper members disposed to said sector disc so as to cause swinging of said two long arms about said fixed shaft upon swinging of said sector disc; first and second weft clamping mechanisms mounted on said loom stationary part so as to be operated by said first and second long arms for an alternately timed resilient claMping of the first and second wefts; each of said long arms pulling back respective wefts with maximum employable receding length upon said swinging thereof when the corresponding clamping mechanism is effective.
Claim 3
Dependent Claim
37 words
An improved weft controller claimed in claim 1 further comprising stopper mechanisms mounted on said loom stationary part so as to adjustably limit the extent of said swinging of said two long arms independently from each other.
Claim 4
Dependent Claim
128 words
An improved weft controller claimed in claim 1 wherein said cam has a periphery including a first arc for temporary cancellation of clamping of said first weft during picking thereof, a second arc at an end of which cutting of said first weft takes place, a third arc for temporary cancellation of clamping of said second weft during picking thereof, a fourth arc at an end of which cutting of said first weft takes place, a first slope between said first and second arcs, a second slope between said second and third arcs for temporary pulling back of said first weft, a third slope between said third and fourth arcs, and a fourth slope between said fourth and first arcs for temporary pulling back of said second weft.
Claim 5
Dependent Claim
54 words
An improved weft controller claimed in claim 1 wherein said transmission mechanism includes a cam follower roll, a cam follower lever holding said roll at its one end, a link rod for connecting said lever to said sector disc and a resilient member for placing said roll in a pressure contact with said cam.
Claim 6
Dependent Claim
21 words
An improved weft controller claimed in claim 1 wherein said stopper members are adjustable regarding their locations on said sector disc.
Claim 7
Dependent Claim
100 words
An improved weft controller claimed in claim 1 wherein each of said clamping mechanisms includes a short arm swingable about a fixed point on said loom stationary part, a clamper segment disposed to a free end of said short arm, another clamper segment fixed to said stationary part in an arrangement cooperative with said first named clamper segment, a resilient member for pressing said second named clamper segment to said first named clamper segment, and an actuator pin fixed to said long arm so as to urge said short arm for cancellation of clamping upon swinging of said long arm.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |