Abstract: A rotary dobby which includes pivoting arms which are moveable with respect to a plate connected to an element for actuating a heddle frame in controlled response to a reading-in device and wherein the pivot arms include catches which are uniquely configured having internal and external bearing surfaces which cooperatively engage binding surfaces of the plate.

Abstract: A rotary dobby which includes pivoting arms which are moveable with respect to a plate connected to an element for actuating a heddle frame in controlled response to a reading-in device and wherein the pivoting arms include catches which are engageable with respect to first and second spaced binding surfaces of the plate in such a manner that one of the arms is spaced from an actuator associated with the reading-in device when the pivoting arms are engaging the binding surfaces.

Abstract: An actuating selection device for a dobby mechanism for controlling movement of components used to affect movement of a heddle frame and a weaving loom wherein the selection device includes selector members which are pivotally mounted adjacent pole faces of an electromagnet and wherein a moveable armature is pivotally connected to the selector member and includes an outer extremity which is continuously urged into contact with a first of the poles of the electromagnet by a resilient element. The selector member is spaced from the electromagnet when no power is applied thereto and the selector member is moved toward the other pole of the electromagnet together with the moveable armature when power is supplied to the poles of the electromagnet with the movement of the selective member thus controlling the movement of the pair of components which affect the movement of the heddle frame.

Abstract: A procedure for the selection of the moveable hooks of a shed-forming mechanism (7) of a Jacquard type loom comprising at least one catch (9) displaced by a knife (10) between an upper dead point position, in which, or in the proximity of which, the hook may be immobilized by a selector device (15, 16), and a lower dead point position, characterized by exerting on the hook, either in its upper dead point position or in its proximity, a force tending to bring the hook to its lower dead point position. The device comprises elastic stops (20-23) for the hook (9) in its upper dead point position.

Abstract: A collar for selectively connecting and disconnecting twines and harness cords in a jacquard harness mechansim for a weaving loom. The collar includes a socket element having at least one elastically deformable chuck with jaws for engaging a prong of a male element inserted within the socket element. The male element includes a shuttle which is moveable along a rod which extends from the prong to an intermediate portion of the male element which aligns the male element with the socket element. The shuttle separates the jaws of the at least one elastically deformable chuck during relative axial movement of the male element with respect to the socket element to permit the prong of the male element to be inserted into or withdrawn from engagement with the socket element.

Abstract: Adjustable clip elements for assembling oscillating arms of a weaving central system with engaging rods of a drawing system associated with heddle frames of a weaving loom. Each clip element includes a frame having pairs of lateral guides for two pairs of jaw assemblies provided in a slide block and associated with moveable wedges. The wedges are controlled with an adjusting mechanism arranged to urge one wedge towards the base of the slide block while urging the other wedge in the opposite direction.

Abstract: A weaving system is provided as a tightly closed beam or casing for containing an oil bath and lubricating system for the moveable parts of the weaving system. The beam includes upstanding lateral cheeks which may support a drive shaft and pivot pins on which oscillating members are moveably pivoted by a drawing system to the heddle frames of the weaving machine.

Abstract: In a shed-forming system of a weaving loom the drive shaft thereof is driven by an independent motor with controlled variable input which will depend upon the weaving program, the current forces on the components of the shed-forming system and constant forces inherent in the shed-forming system operation and by a second input shaft which synchronizes the drive shaft with the principal drive shaft of the loom.

Abstract: A frame for supporting the return levers connected to the heddle frames of a weaving system of a loom wherein the frame is in the form of an upwardly open U-shaped beam connected to a box element mounted to a support structure of the loom.

Abstract: In a jacquard system of a weaving machine in which hooks are actuated by harness cords controlled by knives carried by belts supported on drums drivingly connected to drum disc shafts, independent motors having output shafts are provided for driving the drum disc shafts. The motors are controlled to reciprocate the movement of the belts by first sensors monitoring the rotational movement of the motor output shafts and second sensors monitoring the rotational movement of a primary drive shaft of the weaving machine.

Abstract: A motion damping system for a weaving machine which includes a pair of elastic members connected to supply damping force in opposite directions to an oscillating member. The oscillating member is connected to a control member so as to oscillate to and from a median position. The oppositely directed elastic members apply continous force to urge the oscillating member toward the median position.

Abstract: In a weaving machine with a cam mechanism for forming the shed a heddle frame levelling apparatus includes rocking levers which are pivoted about a pin which is urged against a fixed bearing surface on the frame of the machine during weaving by elastically deformable elements. In a first embodiment the movement of the pivot pin is effected by the rotation of an eccentric bearing whereas in a second embodiment this movement is caused by a jack.

Abstract: In a dobby drawing device in a weaving loom, the vertical displacement of a heddle frame is obtained with the aid of a single cable which is guided over first and second actuating levers to a set of springs. Two support shafts selectively support the actuating levers so the device may have a lifting or descending action.

Abstract: A Jacquard system for making patterns on the selvedges of fabrics being woven in a loom which includes a hollow input shaft for controlling the vertical movement of heddle support cords. The input shaft extends through a housing and a principle drive shaft extends through and is drivingly connected to the input shaft. The housing includes clamping apparatus for its adjustment along a support beam extending parallel to the principal drive shaft.

Abstract: Connectors which are removably mounted within connecting rods which are used to assemble the rods to levers for controlling the movement of heddle frames in a weaving loom and which include expandable jaws for securing the connectors within the rods.

Abstract: A process for assembling the actuation elements of a rotating dobby, in which the connection between the driver plates of the different actuation elements and the driven shaft thereof is effected by axial tightening of the driver plates between an end cap and spaced bearings. Such tightening is effected once the drawing levers have been engaged on the pivot pin so that the members of each actuation element, which are selectively connected to one another by the coupling elements, are automatically properly positioned on the drive shaft.

Abstract: In a weaving mechanism which includes rocking members for controlling the movement of heddle frames for forming the shed in weaving machines, the rocking members are separated from one another on a common support shaft by spacers interposed therebetween which spacer members are provided with projecting bosses which come into contact with bosses of adjacent spacer members. A rod cooperates with an arm of the spacers to insure the spacers are non-pivotably retained while the rocking members are moveable between the bosses extending therefrom.

Abstract: A drawing device for actuating the heddle frames of a weaving machine of the negative type including rocking levers which guide cables extending from the heddle frame to a return spring system. The rocking levers are mounted on shafts which are shiftable within elongated slots to thereby relax tension on the cables and spring system.

Abstract: In a spring system for dobbies and other weaving mechanisms of the negative type which includes hooking elements, each of the hooking elements includes, parallel to its edges which face the springs, a row of omega-sectioned openings which receive, by a lateral displacement along the axis of the opening, an endpiece of a shape to be seated within the openings.

Abstract: In a spring system for a dobby in a weaving loom, the mobile hooking element which is fixed to a cable for moving a heddle frame includes laterally spaced plates which are slidably engageable with plates of adjacent spring systems to thereby prevent contact of the springs of the adjacent spring systems.