Claims
- 1. A method to prevent melted yarn when stopped in a high temperature texturing jet device, said texturing device comprising an injector having an internally disposed passage for yarn, fluid inlet means for supplying a heated fluid under pressure through said injector passage, a texturizing chamber concentrically disposed at one end of said injector passage and being adapted to contain a compacted yarn mass, said texturizing chamber having a larger cross-sectional area than the cross-sectional area of said injector such as to form an annulus between the outer periphery of said injector and the inner periphery of said texturizing chamber and fluid exit means positioned at said annulus adapted to discharge fluid from said texturizing zone in a direction substantially opposite to yarn path travel, said method comprising
- sensing yarn stoppage with a sensor, and
- actuating a valve in a high pressure fluid conduit communicating with at least two orifices in a sleeve surrounding at least the downstream portion of said injector, and
- blowing any yarn in said texturing chamber out of said chamber with high pressure fluid and thereby pulling out any yarn in said injector with said yarn in said chamber,
- said high pressure fluid flowing from said conduit through said orifices and sleeve and into said chamber through said annulus so that when said yarn stops, said yarn will be removed rather than melted in said chamber and in said injector by said heated fluid and/or the heat latent in said chamber and injector, and so that said chamber and said injector are cooled by said high pressure fluid.
- 2. The method of claim 1 wherein said high pressure fluid is air and said heated fluid is steam.
- 3. The method of claim 2 wherein said valve remains actuated in the open position for 3 to 10 seconds and said air is under pressure of from about 50 to 100 psig.
- 4. In an apparatus for texturizing yarn which comprises an injector having an internally disposed passage for yarn, fluid inlet means for supplying a heated fluid under pressure through said injector passage, a texturizing chamber concentrically disposed at one end of said injector passage and being adapted to contain a compacted yarn mass, said texturizing chamber having a larger cross-sectional area than the cross-sectional area of said injector such as to form an annulus between the outer periphery of said injector and the inner periphery of said texturizing chamber and fluid exit means positioned at said annulus adapted to discharge fluid from said texturizing zone in a direction substantially opposite to yarn path travel, the improvement comprising
- a sleeve surrounding at least the downstream portion of said injector, said sleeve having
- at least two orifices communicating with
- a conduit for high pressure fluid having
- a valve actuated by
- a sensor to detect yarn stoppage,
- said high pressure fluid flowing from said conduit through said orifices and sleeve and into said chamber through said annulus so that when said yarn stops, said yarn will be removed rather than melted in said chamber and in said injector by said heated fluid and/or the heat latent in said chamber and injector, and so that said chamber and said injector are cooled by said high pressure fluid.
- 5. The apparatus of claim 4 wherein said sensor is a feeder arm situated to contact said yarn.
- 6. The apparatus of claim 4 wherein said sleeve surrounds the entire said injector.
RELATED APPLICATIONS
This application is a continuation-in-part of U.S. Ser. No. 720,174 filed Sept. 3, 1976 now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3409956 |
Longbottom et al. |
Nov 1968 |
|
3438188 |
Boggs |
Apr 1969 |
|
3842468 |
Harrison |
Oct 1974 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
720174 |
Sep 1976 |
|