Abstract: An articulated structure for a multi-axis robot includes a base having an arm hinged to the base about a first axis and a forearm hinged to the arm about a second axis parallel to the first axis, and wherein the forearm forms a deformable parallelogram structure which includes two connecting rods that are hinged to two plates about respective axes that are perpendicular to the first and second axes. The structure also includes a first electric actuator controlling pivoting of the arm about the first axis, a second electric actuator controlling pivoting of the forearm about the second axis, and a third electric actuator mounted directly on one of the base and the arm for controlling pivoting of one of the connecting rods relative to the plates about the axes that are perpendicular to the first and second axes.

Abstract: A robot structure that has a base, at least a first arm that moves with respect to the base both in translation and in rotation, a movement mechanism for moving the first arm with respect to the base, a member for accepting a tool, and a power supply assembly. The movement mechanism includes a hollow member which moves in translation with respect to one of either the base or the first arm, while being incapable of translational movement independently of the other of the base or the first arm, and the hollow member being movable in rotation with respect to one of either the base or the first arm, while at the same time being incapable of rotational movement independently of the other of the base or the first arm.

Abstract: The articulated structure for a multi-axis robot comprises a stationary base; an arm hinged to the base about a first axis; a forearm hinged to the arm about a second axis parallel to the first axis, the forearm forming a deformable parallelogram structure and comprising two connecting rods that are hinged to two plates about respective axes that are perpendicular to the first and second axes. This structure also comprises a first electric actuator controlling pivoting of the arm about the first axis; a second electric actuator controlling pivoting of the forearm about the second axis; and a third electric actuator controlling pivoting of one of the connecting rods relative to the plates about the axes that are perpendicular to the first and second axes. The third actuator is mounted on the base or on the arm.

Abstract: This robot structure comprises a base structure (2), at least a first arm (40) that can move with respect to this base structure, both in terms of translation and in terms of rotation, movement means (12, 22, 32) for moving this first arm with respect to the base structure, an accepting member (70) for accepting a tool (72), and a power supply assembly (80).

Abstract: A shed-forming device for a weaving loom of the jacquard type in which a reciprocating vertical movement of two series of knives is effected from an input drive shaft which is drivingly connected through a cam mechanism to two longitudinal shafts disposed concentrically with respect to one another inside a rigid tube mounted between plates for supporting the shafts and wherein the cam mechanism transmits a reciprocating rotary movement from the input drive shaft to the two longitudinal shafts.

Abstract: A process for assembling and an epicyclic reduction gear comprising a plurality of planets provided with outer toothings moveable rotatable about a shaft which are engaged with the toothings of, at least one adjacent gear ring. The shaft of the planets is mounted on a planet-holder so that it is adapted to move with respect to said planet-holder both radially and angularly in a plane perpendicular to the principal shaft of the reduction gear. The rotation shaft of each planet may be radially and angularly adjusted to a position where its outer toothing meshes with the toothing of the adjacent gear ring and may thereafter be secured in position.

Abstract: In a jacquard system for forming the shed in a weaving machine, vertical reciprocating blades of griffe frames are controlled by concentric shafts driven by a single cam assembly connected to the input shaft driven by the drive shaft of the weaving machine. Each of the concentric shafts include radially extending levers which are connected to control the reciprocating movement of the blades.

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: 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 speed reducer of the cycloidal type for robots and other industrial manipulators which includes actuation fingers introduced in openings of toothed cams controlled by rotating eccentrics. Each actuation finger is formed by a roller bearing having an inner ring mounted about a pin with clearance to thereby allow self-centering of an outer ring of each roller bearing in its respective opening.

Abstract: An assembly for controlling the reciprocating movement of the upper and lower frames of a shed-forming device of a weaving loom wherein on the chassis on either side of the shed-forming device two cams are provided which are each in engagement with the end of an offset lever fitted on a shaft to which is connected a balance beam. The ends of the balance beam are connected to the first ends of two connecting rods which have their other ends articulated to first and second rocking levers. The first rocking lever is split having oppositely oriented spaced arms which are separated by the second rocking lever. The first rocking lever is fitted on a pin pivoting in a bearing on the chassis. The second rocking lever is mounted to rotate about the pin of the first rocking lever and the first and second rocking levers are connected to the upper and lower frames by short and long articulated levers.

Abstract: A double lift dobby for controlling the movement of the heddle frames of a weaving machine which includes coupling members pivotally connected at each end of double swinging levers which coupling elements are selectively engaged to oscillating plates by reading and transmission elements controlled by extendable members of an actuating mechanism.

Abstract: A three-position weaving mechanism for a weaving loom which includes a plurality of shed-forming devices having tackle assemblies disposed in side by side relationship and wherein the lower pulleys of adjacent tackle assemblies are joined by a cord which passes over such pulleys and an intermediate idler pulley which is secured to the frame of the weaving loom.

Abstract: The hooks associated with the swinging levers in a negative dobby of a weaving machine include a notch and opposing bearing face along their inner edges for positively retaining the hub and one arm of a bolt which is selectively actuated to engage each hook.

Abstract: A device for coupling heddle frames to rod or cable transmission elements of a mechanism for forming the shed in a weaving loom wherein a female mortise member includes a slot having a pair of opposing arms on either side thereof which shot is traversed by the transmission elements which transmission elements pass through a male tenon member which is adjustably fixed thereto with the aid of a locking mechanism and which male tenon member interengages the female mortise member.

Abstract: A rotating dobby for weaving looms wherein the oscillating rods which are connected to the heddles are positively and instantaneously retained in a fixed position upon the disengagement of the coupling hooks by way of which the rods are normally engaged with a rotating drive disk.

Abstract: In negative dobbies of the type incorporating swinging lever assemblies to which lever elements are connected and which lever elements support two articulated hooks, retaining members are provided in the form of pivotable locks placed between the bearing face of each hook and the pivot pins by way of which the hooks are mounted to the lever elements.

Abstract: Heddle frames in which each upright includes an opening and a pair of spaced bearing surfaces and wherein each horizontal crosspiece includes a fixed and a movable jaw which extend outwardly therefrom and which jaws are engageable with the bearing surfaces upon adjustment of the movable jaws to thereby secure the horizontal crosspieces to the uprights.

Abstract: A yarn carrier structure upon which yarn is wound to form a yarn package includes an axially extended body having a cylindrical exterior surface formed about an axis and a through opening having at least first and second opposed surfaces for engagement by the fingers of a yarn package manipulating machine. Yarn entry ports are provided at one end of the yarn carrier structure and lead to internal passages for accepting and accommodating the leading and transfer tails of the yarn wound upon the yarn carrier structure. First and second slots are provided in the yarn carrier structure to facilitate mounting of the carrier on a utilizing machine. The position of the engagement and mounting surfaces relative to the yarn entry ports are known to provide a yarn carrier structure well suited for automatic machine manipulation.