Patent ID: 7104286

Claim:
Weaving machine ( 1 ) comprising: at least two temples ( 2 ) whose axis is parallel to the weft threads ( 3 i ) and which are located at the lateral edges of the cloth ( 5 ), a generally cylindrical cloth-deflecting bar ( 6 ) on which the cloth ( 5 ) presses around an arc of contact (α i ) before winding around a hauloff roll ( 7 ) on which one or more back-up rolls ( 8 , 9 ) press, said cloth-deflecting bar ( 6 ) being composed of a central cylindrical portion ( 6 t ) which connects coaxially on either side with two terminal portions ( 6 d , 6 e ) next to the areas where said temples ( 2 ) are installed, the two terminal portions ( 6 d , 6 e ) having throughout their length (L) a cross section which varies in shape proceeding from their ends (E, D) adjacent to said central portion ( 6 t ) towards their free ends (A, B) in such a way that the position, shape and/or amplitude of said arc of contact (α i ), when proceeding in the same direction, vary, causing a variation in the tension transmitted to the corresponding areas of the cloth ( 5 ) by the haul-off roll ( 7 ), such that it varies from a minimum value (T m ) at said ends of the terminal portions (C, D) adjacent to the central portion ( 6 t ) to a maximum value (T M ) at their free ends (A, B), wherein said two terminal portions ( 6 d , 6 e ) of the cloth-deflecting bar ( 6 ) are separated by the central cylindrical portion ( 6 t ) and are connected to it coaxially in such a way that said two terminal portions ( 6 d , 6 e ) rotate about the common axis (N—N) relative to the central cylindrical portion ( 6 t ), and wherein fixing means ( 11 ) are fitted to reversibly clamp the terminal portions ( 6 d , 6 e ) when they have rotated through a desired angle with respect to said central cylindrical portion ( 6 t ).