Claims
- 1. A selvage cutter (1) for a loom, said selvage cutter comprising a cutter carrier (2, 18), a scissors cutter including a stationary cutter blade (3) fixed to said cutter carrier and a movable cutter blade (5), a blade journal (6, 6A) journalling said movable cutter blade (5) to said cutter carrier, a cutter drive (4, 4C) mounted on said cutter carrier (2, 18), a drive connection (5A, 5B) for transmitting a cutter force from said cutter drive to said movable cutter blade (5), a cutter guide (9, 9A, 9B) secured to said cutter carrier for engaging a cut fabric edge (8A) of a fabric (8) downstream of a cutting point (CP) as viewed in a feed advance direction (22) of said fabric (8), a carrier journal (7) journalling said cutter carrier (2, 18) to a fixed support (17) for permitting a follower movement of said cutter guide in a plane defined by said cut fabric edge (8A) and by said fabric (8), and a spring biasing assembly (14, 14A) interposed between said fixed support (17) and said cutter carrier (2, 18) for applying a biasing force to said cutter guide to urge said cutter guide into contact with said cut fabric edge (8A) in said plane for enforcing said follower movement for cutting all weft ends (8B) to a uniform length in response to shrinkage locations (SL) along said cut fabric edge (8A).
- 2. The selvage cutter of claim 1, wherein said cutter carrier comprises a mounting section (18, 18A) journalled by said carrier journal (7) to said fixed support (17) and a carrier extension (2) secured to said mounting section (18, 18A), and wherein said movable cutter blade (5) is journalled to said carrier extension (2) by said blade journal (6, 6A).
- 3. The selvage cutter of claim 2, wherein said stationary cutter blade (3) is an integral part of said carrier extension (2), whereby said movable cutter blade (5) is journalled to said stationary cutter blade (3) by said blade journal (6, 6A).
- 4. The selvage cutter of claim 1, wherein said cutter guide (9, 9A, 9B) comprises a guide pin (9B) and a guide claw (9A) at one end of said guide pin for engaging said cut fabric edge (8A) downstream of said cutting point (CP), and a guide mounting (10) securing said guide pin (9B) with its other end to said cutter carrier (2).
- 5. The selvage cutter of claim 4, wherein said guide pin mounting (10) holds said other end of said guide pin (9B) for adjustment, and wherein said guide pin mounting (10) is secured to said cutter carrier (2).
- 6. The selvage cutter of claim 5, wherein said guide pin mounting (10) has a longitudinal axis (10A) extending normal to said cutter carrier (2) in a position locating said guide claw (9A) downstream of said cutting point (CP) for contacting said cut fabric edge (8A) during said follower movement.
- 7. The selvage cutter of claim 6, wherein said guide pin mounting (10) has a guide hole wherein said other end of said guide pin (9B) is slidably received for adjusting the position of said guide profile (9A) relative to said cut fabric edge (8A), said guide pin mounting (10) further comprising a locking member (10B) for locking said guide pin (9B) in an adjusted position in said guide pin mounting (10).
- 8. The selvage cutter of claim 5, wherein said guide pin mounting (10) comprises an extension (10F), said cutter carrier (2) having an opening through which said extension (10F) adjustably fits, and at least one locking element (10D, 10E) for locking said guide pin mounting (10) in an adjusted position relative to said cutter carrier (2).
- 9. The selvage cutter of claim 1, further comprising a first stop element (11) and a second stop element (12) adapted for connection in fixed locations to said loom opposite carrier side walls of said cutter carrier (18, 18A) for limiting said follower movement of said cutter carrier about said carrier journal (7, 7A).
- 10. The selvage cutter of claim 9, wherein said first stop element (11) is positioned on a fabric facing side of said selvage cutter with a spacing (X) from its respective cutter carrier side wall, wherein said second stop element (12) is positioned on a cutter carrier side facing away from said fabric also with said spacing (X) from its respective cutter carrier side wall, and wherein said spacing (X) corresponds to a maximum edge shrinkage in the weft direction at a shrinkage location (SL) along said cut fabric edge (8A).
- 11. The selvage cutter of claim 1, wherein said biasing assembly comprises a biasing spring (14) interposed between said fixed support (17) and said cutter carrier (18) for applying a biasing force (SF) to said cutter carrier and to said cutter guide (9, 9A, 9B) for flexibly urging said cutter guide into contact with said cut fabric edge (8A) in said plane defined by said fabric (8).
- 12. The selvage cutter of claim 11, wherein said biasing assembly further comprises adjustment elements (14A, 14B) for adjusting said biasing force (SF).
- 13. The selvage cutter of claim 11, wherein said biasing spring (14) is a compression spring.
- 14. The selvage cutter of claim 12, wherein said cutter carrier (2, 18) comprises a carrier mounting claw (18A) with an open side (18B) for enclosing said fixed support (17) at least on two sides, and wherein said carrier journal (7) extends through said carrier mounting claw (18A) and through said fixed support (17) in such a position that a spacing (S) is provided between said claw (18A) and said fixed support (17) for permitting said follower movement of said claw (18A) relative to said fixed support (17).
- 15. The selvage cutter of claim 1, wherein said cutter carrier (2, 18) comprises a carrier extension (2) as a flat vertically extending member having a slot (2A) opening in a direction opposite to said feed advance direction (22) for guiding weft threads (15A) to said cutting point (CP).
Priority Claims (1)
Number |
Date |
Country |
Kind |
198 06 953 |
Feb 1998 |
DEX |
|
PRIORITY CLAIM
This application is based on and claims the priority under 35 U.S.C. .sctn.119 of German Patent Application DE 198 06 953.7, filed in Germany on Feb. 19, 1998.
US Referenced Citations (4)
Foreign Referenced Citations (10)
Number |
Date |
Country |
2271320 |
Dec 1975 |
FRX |
2276411 |
Jan 1976 |
FRX |
7832131 |
Dec 1979 |
FRX |
2508942 |
Jan 1983 |
FRX |
870230 |
Mar 1953 |
DEX |
2042207 |
Mar 1972 |
DEX |
2435397 |
Jan 1976 |
DEX |
3219457C2 |
Feb 1983 |
DEX |
392415 |
Sep 1965 |
CHX |
2021161 |
Nov 1979 |
GBX |