Spring dampened shedding device
AssigneeDeutsch Institute fur Faserforschung
InventorsHans-Jurgen Bauder, Helmut Weinsdorfer
Life of this patent
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Abstract
A shedding device in a jacquard loom, for forming the lower shed, for instance, has a retracting spring which is rigidly anchored on one end in the loom or to the floor. To suppress the development of resonance in the spring, a core element is provided, which contacts the inside of the spring at points spaced apart from one another and forces the spring to take a course which deviates from the rectilinear. As a result, friction forces that contribute to damping the spring motion are created between the spring and the core element.
Claims27
A shedding device (1) for a loom, in particular for a jacquard loom,
- having a drive device for generating a longitudinal motion;
- having at least one heddle (8), which includes an eyelet (9) and from which heddle shafts (12, 13) extend toward diametrically opposite sides, of which one heddle shaft (12) is coupled with the drive device (2);
- having a connecting device (27) on the other heddle shaft (13);
- having a helical spring (14), associated with the at least one heddle (8), of which spring one end is mounted on the connecting device (27) and serves to retract the heddle (8);
- having an anchoring device (16) for fixedly anchoring the other end of the helical spring (14);
- and
- having a damping element (22), which is in contact at least at a plurality of spaced-apart points with the helical spring (14) and forces a nonrectilinear course on the helical spring.
Dependencies are inferred from the claim text.