Patent ID: 8875747
Filing Date: 2014-11-04
Classification: D03D

Abstract:
1. Gripper head ( 1 , 101 , 201 ) usable for the insertion of weft threads ( 2 ) on a gripper weaving machine with a thread clamp ( 3 , 103 , 203 ) mounted on the gripper head ( 1 , 101 , 201 ), which thread clamp comprises a stationary clamping part ( 4 , 104 , 204 ) and a movable clamping part ( 5 , 105 , 205 ), whereby the movable clamping part ( 5 , 105 , 205 ) is pressable against the stationary clamping part ( 4 , 104 , 204 ) by means of a force, furthermore with a first hollow body ( 6 , 106 , 206 ) mounted on the gripper head ( 1 , 101 , 201 ), the volume of which is enlargeable under internal pressure of a gaseous medium, whereby the first hollow body ( 6 , 106 , 206 ) is connected with the movable clamping part ( 5 , 105 , 205 ) in such a manner so that through the volume enlargement of the first hollow body ( 6 , 106 , 206 ) a clamping part force is producible, which acts on the movable clamping part ( 5 , 105 , 205 ), furthermore with a valve ( 9 , 109 , 209 ) mounted on the gripper head ( 1 , 101 , 201 ), which is connected with the first hollow body ( 6 , 106 , 206 ) in such a manner so that the gaseous medium is conveyable through the valve ( 9 , 109 , 209 ) into the first hollow body ( 6 , 106 , 206 ), characterized in that a return means ( a second hollow body ( the valve ( a closing means ( the valve (