DEVICE FOR COUPLING A HEALD FRAME WITH A HEALD FRAME HOLDER

摘要

A frame holder to which a heddle frame is coupled by a fastener operating in accordance with the toggle lever principle and pivotably mounted at the upper end of the frame holder by means of a pivot axis. The fastener includes a lever, consisting of two parallel levers, which is pivotable around a first pivot axis whereby an operating lever is pivotably mounted to its other end at a second pivot axis. A bolt which is pivotably arranged on this axis is located in the operating lever which is structured as a hollow rod. Due to elongate holes formed in the hollow rod and through which the axis extends the hollow rod is longitudinally displaceable relative to the bolt. The hollow rod is pressed somewhat towards the outside under action of a pressure spring which rests against a nut screwed onto the end of the bolt and against a inner sleeve of the hollow rod and is installed in a pre-stressed state when a wedge-like designed push button arranged at the front end of the hollow rod upon a pivoting of the fastener into the locking position engages into a detent recess at a formed piece bolted to the side support. In this way the side support and the frame holder equipped with the pivotable fastener are pressed together whereby an over dead center position is arrived at in the end position of the fastener. The apparatus allows with the aid of this snap closure a fast coupling and uncoupling of the heddle frame and frame holder and replaces the customary screw bolt fasteners.