US 4,938,512 A · Thread tying apparatus for a shuttle loom

Abstract

A thread-tying apparatus for use in a shuttle loom. The thread tying apparatus includes a grasping claw (122), pressing lever (124), small claw (126), large claw (127), gripping claw (129) and thread tightener (125a). The grasping claws (122) grasp the threads at two locations and rotate the threads so as to form a loop therein which cross at a point. The pressing lever (124) then hooks the crossing point of the threads such that the small claw (126) can grasp the threads at a position offset from the grasping claw (122). Thereafter, the large claw (126) pushes down a portion of the thread such that gripping claw (129) can grab the portion of the thread and pull the thread through the loop which is thereafter tightened by the thread tightener (125a).

Claims4

Dependent claims

A thread tying apparatus, comprising:

gripper claw means for gripping old and new threads disposed parallel to and adjacent one another at two locations;
means for rotating and retracting said gripper claw means to form a loop in said adjacent threads having a point at which said threads cross;
pressing lever means for positioning said crossing point to a position offset from said gripping means;
and
gripping claw means for gripping a part of the threads located in said offset position, pulling said part of the threads through said loop and tensioning said threads to tie a single bundle knot with said old and new threads.

2 more elements

Dependencies are inferred from the claim text.

Thread tying apparatus for a shuttle loom

Life of this patent

Thread tying apparatus for a shuttle loom

Life of this patent

Abstract

Claims4