Patent ID: 6938647

Claim:
Rotating dobby for weaving loom which comprises, at the level of each of its blades: an oscillating piece connected to a heddle frame and associated with an actuation element mounted idly on a principal shaft of this dobby, a mobile coupling member borne by the actuation element, this mobile member being subjected to first elastic means in order to effect the angular link of the actuation element with a disc fastened with the principal shaft, and the control of said mobile coupling member being ensured with the aid of two pivoting levers substantially in the form of a bracket subjected, on the one hand, to the action of a reading device and, on the other hand, to that of second elastic means which tend to engage the catch of each pivoting lever either with a jamming surface provided opposite the mobile coupling member on the actuation element or with said mobile coupling member, in which case said mobile coupling member is controlled for uncoupling of said actuation element with respect to said disc, while, when a lever is in engagement with said jamming surface, it is out of range of a selector belonging to said reading device, said selector being provided with an end adapted alternately to block the pivoting of one or the other of said levers in bracket form, wherein it further comprises mechanical members adapted to displace at least one lever, of which the catch is not in engagement with said jamming surface, against the action of said second elastic means, with the result that said lever does not interfere with the angular displacement of the said selector.