Dual torsion bar picking mechanism for a loom
AssigneeSulzer Brothers Limited
InventorsFrantisek Jankovsky, Danilo Vezzu, Erwin Pfarrwaller, Hans Demuth
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Abstract
The picking mechanism is provided with two torsion bars. One torsion bar is stressed in order to accelerate a gripper projectile of the loom. The second torsion bar, upon release of the first torsion bar, is temporarily connected to the first torsion bar so that energy can be stored by the second torsion bar via a double-arm lever. During a return motion of the acceleration lever to a picking position, the second torsion bar is relieved of tension by delivering the stored energy to the drive shaft of the picking mechanism via the double arm lever. The picking mechanism thus uses only little energy.
Claims14
A picking mechanism for a loom comprising
- an acceleration lever for picking of a gripper projectile;
- a first spring element connected to said lever for biasing said lever in a picking direction;
- a tensioning means for stressing said spring in a direction opposite said picking direction;
- a drive shaft for actuating said tensioning means;
- a second spring element for slowing movement of said lever in said picking direction while receiving kinetic energy therefrom;
- and
- mechanical transmission elements for coupling said second spring element to said drive shaft during movement of said lever in said picking direction to impart energy thereto.
A picking mechanism for a loom comprising
- a first torsion bar fixedly mounted at one end;
- an acceleration lever mounted on said rod for picking of a gripper projectile in a picking direction;
- tensioning means for twisting said torsion bar in a direction opposite said picking direction to position said torsion bar in a picking position;
- a second torsion bar fixedly mounted at one end;
- and
- transmission elements for coupling said first torsion bar with said second torsion bar to twist said second torsion bar in response to movement of said lever in said picking direction to recover energy therefrom.
Dependencies are inferred from the claim text.