Double dent reed with increased separation between the front...

D - Textiles – Paper – 03 – D

Patent

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Details

D03D 49/62 (2006.01) D03D 49/68 (2006.01)

Patent

CA 2130760

A reed 28 for a loom is disclosed which includes a frame with upper and lower baulk mechanisms D, E that carry a front row B of dents 30 on the beat-up side of the frame and a back row C of dents 34 staggered in alignment with dents 30. Lower baulk mechanism E includes a stepped clamping portion which is reduced in depth compared to the depth of the upper portion of the lower baulk mechanism E such that dents 34 are shorter in height in the lower baulk mechanism E than dents 30. This renders one of the rows C of dents 34 able to be disposed farther from the other row B of dents 30 than if they were to extend into the clamping portion of the lower baulk mechanism E the same amount as dents 30. In this way, the angle of attack between the dents and the warp yarn ends is reduced and offers less resistance to the yarn passage, reducing abrasion of the warp yarns, reducing the lint buildup between the dents, and increasing efficiency by reducing the incidence of friction between adjacent warp yarns.

Peigne (28) pour un métier comprenant un bâti à jumelles supérieure et inférieure (D, E) portant une première rangée (B) de dents (30) sur le côté de frappe de la duite et une rangée arrière (C) de dents (34) décalées par rapport aux dents (30) de la première rangée. La jumelle inférieure (E) comprend une partie de serrage en gradin dont la profondeur est inférieure à celle de la partie supérieure de la jumelle inférieure (E) de façon que les dents (34) soient plus courtes dans la jumelle inférieure (E) que les dents (30) de la rangée (B). Une rangée (C) de dents (34) peut ainsi être plus éloignée de l'autre rangée (B) de dents (30) que si elles devaient se prolonger dans la partie de serrage de la jumelle inférieure (E) de la même valeur que les dents (30). Ainsi, l'angle d'attaque entre les dents et les fils de chaîne est diminué et présente moins de résistance au passage du fil, diminuant le frottement des fils et l'accumulation de charpie entre les dents, et augmentant le rendement par la réduction du frottement entre les fils de chaîne contigus.

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