Claims
- 1. A heating chamber for thermally processing more than one advancing yarn and which is characterized by stable temperature conditions which are substantially uneffected by a threading operation, and comprising
- an elongate first member composed of two longitudinally extending side plates disposed in a parallel, laterally spaced apart relationship, with said side plates having opposing faces, and with said opposing faces including respective lontigudinally directed shoulders which are laterally aligned so as to define in cross section an outer relatively wide channel and an inner relatively narrow channel between said two plates,
- an elongate second member disposed between said opposing faces of said side plates and extending along the longitudinal length thereof, said second member having opposite faces, with said opposite faces each having a longitudinally directed shoulder which opposes an associated shoulder of said first member, and such that the second member comprises in cross section an outer portion which is sized to be closely received within said outer channel of said first member and an inner portion which is sized to be closely received within said inner channel of said first member,
- means for heating said first and second members, and
- means for transversely moving said first and second members relative to each other and between an operative position wherein said cooperating pairs of shoulders are closely spaced apart to define a pair of yarn passages, and a threading position wherein said associated pairs of shoulders are widely spaced apart to facilitate yarn threading.
- 2. The heating chamber as defined in claim 1 wherein said means for heating said first and second members comprises duct means for introducing a hot vapor into each of said yarn passages when said members are in said operative position.
- 3. The heating chamber as defined in claim 2 wherein said duct means includes a passageway in at least one of said side plates which extends in a longitudinal direction, and secondary duct means extending from each of said passageways and through the interior of said second member to the vicinity of each of said shoulders thereof when said members are in the operative position.
- 4. The heating chamber as defined in claim 3 wherein said duct means includes a longitudinal passageway in each of said side plates, and further includes additional duct means extending transversely through said second member for interconnecting said passageways when said members are in the threading position.
- 5. The heating chamber as defined in claim 1 wherein said means for transversely moving said first and second members relative to each other includes means for relatively moving the members to an extent whereby the shoulders of said second member are separated from said side plates of said first member so as to permit a yarn to be laterally inserted into said outer channel on each side of said second member.
- 6. A heating chamber for thermally processing an advancing yarn and which is characterized by stable temperature conditions which are substantially uneffected by a thread-up operation, and comprising
- a first elongate plate having a generally flat surface, and a groove formed in said flat surface and extending along the longitudinal length thereof,
- a second elongate plate having a generally flat surface,
- means mounting said first and second members with said surfaces thereof in an overlying relationship and for movement along a direction which is generally parallel to the surfaces and transverse to the direction of said groove, and between an operative position wherein said surface of said second member overlies the groove in the surface of said first member to define a relatively narrow yarn passage and a threading position wherein said surface of said first member is positioned relative to the surface of said second member to define an enlarged opening to facilitate threading of a yarn, and
- means for heating said first and second members.
- 7. The heating chamber as defined in claim 6 wherein said means for heating said first and second members comprises duct means for introducing a hot vapor into said groove of said first member.
- 8. The heating chamber as defined in claim 7 wherein said duct means includes a passageway in said first member and extending in a direction parallel to said groove, and secondary duct means extending between said passageway and said groove.
- 9. The yarn heating chamber as defined in claim 7 further comprising a rigid housing substantially enclosing said first and second members and for resisting a separating force exerted by said heated vapor in said groove.
Priority Claims (9)
Number |
Date |
Country |
Kind |
3247040 |
Dec 1982 |
DEX |
|
3247626 |
Dec 1982 |
DEX |
|
3304752 |
Feb 1983 |
DEX |
|
3308251 |
Mar 1983 |
DEX |
|
3312823 |
Apr 1983 |
DEX |
|
3318645 |
May 1983 |
DEX |
|
3321202 |
Jun 1983 |
DEX |
|
3326432 |
Jul 1983 |
DEX |
|
3336101 |
Oct 1983 |
DEX |
|
Parent Case Info
This application is a division of application Ser. No. 563,301, filed Dec. 19, 1983, now U.S. Pat. No. 4,560,347.
US Referenced Citations (13)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2703991 |
Aug 1977 |
DEX |
2840177 |
Mar 1980 |
DEX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
563301 |
Dec 1983 |
|