Mid closing dobby
AssigneeStaubli & Trumpelt GmbH Maschinenfabrik
InventorSiegmund H. Tremer
Life of this patent
Estimating the term…
Abstract
A dobby for a weaving loom including a series of actuation elements which depend on a weaving program incorporated in a reading device and which are coupled to traction levers connected by a drawing system to the heddle frames, wherein, between the traction levers and the drawing systems of at least certain of the actuation elements there is interposed an arm associated with additional actuation elements which impart thereto a periodic oscillating movement which is in synchronism with the operating cycle of the conventional actuating elements. The arms are pivotally carried by the traction levers so as to continue their oscillating movement to one or the other of two work positions of the lever.
Claims10
In a dobby for a weaving loom of the type which includes at least one traction lever controlled by actuation elements depending on a weaving program incorporated in a reading device and wherein the traction lever is connected to a drawing system of a heddle frame via a pivoting arm and wherein the heddle frame is moveable to either side of a median position corresponding to the closure of a shed of the loom, the improvement comprising, additional actuation means for imparting to the pivoting arm a periodic swinging movement in synchronism with the actuation elements, the pivoting arm being freely supported by three movable points of coupling which connect the pivoting arm respectively to the traction lever, the drawing system and to said additional actuation means, said additional actuation means including means for ensuring permanent control of the pivoting arm to return the heddle frame in the direction of the median position regardless of the position of the heddle frame.
Dependencies are inferred from the claim text.