Apparatus for presenting weft threads to a gripper in shuttleless looms

US4785856A · kind A · utility

Assignee

• Lindauer DORNIER Gesellschaft mbH · DE

Inventors

• Fritz Gehring · Lindau (Bodensee), DE
• Valentin Krumm · Hergensweiler, DE
• Siegbert Gsell · Schallstadt, DE
• Walter Lindenmueller · Gettorf, DE

Key dates

• Filing date: May 26, 1987
• Grant date: Nov 22, 1988
• Expiry date: May 26, 2007

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D03D47/38
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Weft threads are presented to a gripper in shuttleless looms by needles, each guided by at least one straight guide held askew in a needle guide carrier (9). These straight needle guides due to their askew arrangement make sure that all needles together are located in and displaceable in a fan type plane twisted in space. In the working position for presenting a weft thread each needle eye is located on a short line (7) extending approximately in parallel to a gripper path. Thus, all weft threads in their presenting position are close to each other in a narrow presenting zone within the reach of the gripper path for a sure gripping at the beginning of the forward gripper motion. At its beginning the gripper speed is still slow so that the weft threads are gripped gently. The straight needle guides held askew in the at least one guide carrier (9) form a row of guides which is slanted by a given angle relative to the gripper path to form the fan type plane twisted in space. A second row of askew straight guides may be arranged in a second guide carrier ( 10).