US4074727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid supply system and nozzle for jet weaving looms
Assignee: Individual
•
Filing: 1976-05-27
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Granted: 1978-02-21
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Expires: 1996-05-27
Abstract
Abstract A liquid supply system and a nozzle construction for a jet weaving loom. The nozzle is supplied directly from a public water works at the normal pressure of said water works. The exact amount of water required to propel the weft yarn across the open harness shed of the loom is obtained by a solenoid valve series-connected to the water supply adjacent the nozzle and controlled by an electric pulsator which is adjustable to open the valve for the required time in accordance with the width of the weaving and the type of weft yarn. Synchronization of the operation of the nozzle with the harness motion is obtained by a switch controlling the pulsator and directly operated by a cam connected to a shaft of the main movement of the weaving loom. The nozzle structure comprises only two parts: namely, a bored body having a main cylindrical bore portion followed by a tapered frusto-conical bore portion, in turn followed by a cylindrical terminal outlet bore portion and a needle axially adjustable within the body bore, defining an annular space with the latter and having a slightly tapered terminal end fitted within the outlet bore portion of the body. The needle has an axial passage for the yarn. The water is admitted laterally within the body directly into the annular space. The nozzle is able to propel the yarn at a considerable distance with a minimum quantity of liquid and at a low liquid pressure. There is minimum deviation and dispersion of the liquid jet across the harness shed.
Inventors
- 👤 Clyde Chi Kai Kwok
- 👤 Joseph Rene Cornellier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:27
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/28; D03D47/32
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
183 words
In a jet weaving loom, the improvement comprising a liquid supply system and a nozzle for propelling a weft yarn across the open shed of warp yarn, said nozzle comprising a weft yarn passage, an annular liquid passage, and a front outlet surrounding the weft yarn passage, said liquid passage having an inlet in communication with a back chamber, said back chamber feeding into and merging with a first conical forwardly tapering passage portion which in turn feeds into and merges with a forwardly tapering terminal portion, a remotecontrolled valve having a liquid outlet connected to the liquid passage inlet of the nozzle, said valve having a liquid inlet, means to supply liquid at substantially constant low pressure to said liquid inlet of said valve, pulse generating means connected to said valve to supply a pulse to the latter of predetermined duration and open said valve only during the time of said pulse, and signalling means to cause operation of said pulse generating means, actuated by the beating or harness motion of said loom, whereby said valve operates in synchronism with said motion.
Claim 2
Dependent Claim
183 words
In a jet weaving loom, the improvement comprising a liquid supply system and a nozzle for propelling a weft yarn across the open shed of warp yarn, said nozzle comprising a weft yarn passage, an annular liquid passage, and a front outlet surrounding the weft yarn passage, said liquid passage having an inlet in communication with a back chamber, said back chamber feeding into and merging with a first conical forwardly tapering passage portion which in turn feeds into and merges with a forwardly tapering terminal portion, a remotecontrolled valve having a liquid outlet connected to the liquid passage inlet of the nozzle, said valve having a liquid inlet, means to supply liquid at substantially constant low pressure to said liquid inlet of said valve, pulse generating means connected to said valve to supply a pulse to the latter of predetermined duration and open said valve only during the time of said pulse, and signalling means to cause operation of said pulse generating means, actuated by the beating or harness motion of said loom, whereby said valve operates in synchronism with said motion.
Claim 3
Dependent Claim
143 words
In a jet weaving loom, the improvement comprising a liquid supply system and nozzle said nozzle comprising a body having a through bore, a needle inserted in said through bore and having a weft yarn passage which extends axially of said needle, said body through bore defining a main cylindrical portion preceded by a forwardly tapering frusto-conical portion, in turn preceded by an outlet cylindrical portion of restricted diameter, all said three portions merging with one another, said needle defining a main cylindrical portion preceded by a forwardly tapering frusto-conical portion, in turn preceded by a slightly forwardly tapered terminal portion, the needle being coaxial with the body through bore and defining therewith an annular liquid passage, said needle being axially adjustable within said body through bore, an inlet for said liquid passage opening at said main cylindrical portion of said through bore.
Claim 4
Dependent Claim
143 words
In a jet weaving loom, the improvement comprising a liquid supply system and nozzle said nozzle comprising a body having a through bore, a needle inserted in said through bore and having a weft yarn passage which extends axially of said needle, said body through bore defining a main cylindrical portion preceded by a forwardly tapering frusto-conical portion, in turn preceded by an outlet cylindrical portion of restricted diameter, all said three portions merging with one another, said needle defining a main cylindrical portion preceded by a forwardly tapering frusto-conical portion, in turn preceded by a slightly forwardly tapered terminal portion, the needle being coaxial with the body through bore and defining therewith an annular liquid passage, said needle being axially adjustable within said body through bore, an inlet for said liquid passage opening at said main cylindrical portion of said through bore.
Claim 5
Dependent Claim
29 words
A liquid supply system and nozzle as claimed in claim 2, wherein the needle main cylindrical portion extends forwardly partly opposite the frusto-conical portion of said body through bore.
Claim 6
Dependent Claim
46 words
A liquid supply and nozzle system as claimed in claim 3, wherein the frusto-conical portions of said body through bore and of said needle have slightly unequal angles of taper to define an annular passage which slightly decreases in width forwardly of the body through bore.
Claim 7
Dependent Claim
43 words
A liquid supply system and nozzle as claimed in claim 4, wherein the terminal portion of said needle slightly tapers forwardly at an angle of approximately 4 degrees to define a slightly diverging annular passage with said outlet bore portion of said body.
Claim 8
Dependent Claim
28 words
A liquid supply system and nozzle as claimed in claim 5, further including an enlarged diameter mouth protruding from the outlet cylindrical portion of said body through bore.
Claim 9
Dependent Claim
26 words
In a jet weaving loom as claimed in claim 2, wherein said valve is an electro-magnetic valve and said pulse generating means generate an electric pulse.
Claim 10
Dependent Claim
37 words
A liquid supply system and nozzle as claimed in claim 2, wherein said means to supply liquid to the inlet of said valve includes a liquid supply line and series-connected liquid filter and liquid pressure regulating valve.
Claim 11
Dependent Claim
27 words
A liquid supply system and nozzle as claimed in claim 8, further including an air bleeding valve and a liquid accumulator preventing liquid hammer in the line.
Claim 12
Dependent Claim
22 words
A nozzle as claimed in claim 2 wherein said outlet cylindrical portion of restricted diameter has a length of approximately 1 inch.
Claim 13
Dependent Claim
71 words
In a jet weaving loom, a nozzle as claimed in claim 6, said nozzle including a body having a through bore and a needle inserted in said through bore and having said axial yarn passage, said body through bore and needle defining therebetween said annular liquid passage and front outlet, and means to adjust the axial position of said needle in said body to change the width of said annular passage.
Claim 14
Dependent Claim
151 words
In a jet weaving loom, the improvement comprising a nozzle for propelling a weft yarn across the open shed of warp yarns, said nozzle comprising a body having a through bore, a needle inserted in said through bore and having an axial yarn passage, said body through bore defining a main cylindrical portion preceded by a forwardly tapering frusto-conical portion, in turn preceded by an outlet cylindrical portion of restricted diameter, all said three portions merging with one another, said needle defining a main cylindrical portion preceded by a forwardly tapering frusto-conical portion, in turn preceded by a slightly forwardly tapered terminal portion, the needle being coaxial with the body through bore and defining an annular liquid passage therewith, means to adjustably position said needle axially of said through bore, said body having a liquid inlet in communication with said liquid passage at said main cylindrical portion of said through bore.
Claim 15
Dependent Claim
151 words
In a jet weaving loom, the improvement comprising a nozzle for propelling a weft yarn across the open shed of warp yarns, said nozzle comprising a body having a through bore, a needle inserted in said through bore and having an axial yarn passage, said body through bore defining a main cylindrical portion preceded by a forwardly tapering frusto-conical portion, in turn preceded by an outlet cylindrical portion of restricted diameter, all said three portions merging with one another, said needle defining a main cylindrical portion preceded by a forwardly tapering frusto-conical portion, in turn preceded by a slightly forwardly tapered terminal portion, the needle being coaxial with the body through bore and defining an annular liquid passage therewith, means to adjustably position said needle axially of said through bore, said body having a liquid inlet in communication with said liquid passage at said main cylindrical portion of said through bore.
Claim 16
Dependent Claim
25 words
A nozzle as claimed in claim 12, wherein the needle main cylindrical portion extends forwardly partly opposite the frusto-conical portion of said body through bore.
Claim 17
Dependent Claim
42 words
A nozzle as claimed in claim 13, wherein the frusto-conical portions of said body through bore and of said needle have slightly unequal angles of taper to define an annular passage which slightly decreases in width forwardly of the body through bore.
Claim 18
Dependent Claim
38 words
A nozzle as claimed in claim 14, wherein the terminal portion of said needle slightly tapers forwardly to an angle of approximately 4° to define a slightly diverging annular passage with said outlet bore portion of said body.
Claim 19
Dependent Claim
24 words
A nozzle as claimed in claim 15, further including an enlarged diameter mouth protruding from the outlet cylindrical portion of said body through bore.
Claim 20
Dependent Claim
28 words
A nozzle as claimed in claim 15, wherein said forwardly tapering frusto-conical portion forms an angle of between 18° and 22° with an axis of the through bore.
References Cited (Backward Citations)
DE1279567B
Cited
US3576284A
Cited
US3655862A
Cited
US3782422A
Cited
US3863822A
Cited
US3977442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |