Helicopters and grips for defenceless weaving machines, with thread transport in a weird or vertical plane

摘要

A pair of weft transport grippers for shuttleless looms, of the type in which the carrying gripper (1) has a free space (1a) to house the head of the drawing gripper (2) and weft yarn clamping means apt to hold the weft yarn tail (T') through said space, and in which the drawing gripper (2) has a horizontally positioned hook (9) and a yarn clamping zone lying on a vertical plane. The carrying gripper (1) is apt to hold the weft yarn tail (T') along a slanting plane, while the drawing gripper (2) has its hook (9) facing the carrying gripper (1) - namely the side opposite to the reed (4) - and comprises two bulging ribs (5, 6) projecting upwards and respectively downwards from its head. IMAGE