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US 5,179,980 AGranted
Weft yarn brake with logic circuit control
AssigneeSulzer Brothers Limited
InventorsOskar Hubner, Rudolf Stauner
Life of this patent
Estimating the term…
Abstract
A yarn brake which can be used in projectile looms and rapier looms is actuated by a stepping motor with the rotational movement of a drive shaft of the stepping motor being converted to a linear movement of the braking member of the yarn brake.
Claims9
A yarn brake for a loom comprising:
- a brake band including a resilient metal band which is tensioned by means of a spring;
- a braking member for pressing a weft yarn against said brake band;
- an actuating motor having a rotatable shaft;
- means connected between said shaft and said member for driving said braking member with a linear movement in response to rotation of said shaft;
- and
- a triggering and logic circuit arrangement for driving said motor.
3 more elements
A projectile loom comprising
- means for picking a projectile through a shed of warp yarns;
- and
- a yarn brake for braking a weft yarn trailing from said projectile, said yarn brake comprising a brake band, a braking member for pressing a weft yarn against said brake band, an actuating motor having a rotatable shaft, means connected between said shaft and said member for driving said braking member with a linear movement in response to rotation of said shaft and a triggering and logic circuit arrangement for driving said motor.
A rapier loom comprising
- a giver rapier for carrying a weft yarn into a shed of warp yarns;
- a taker rapier for receiving a weft yarn from said giver rapier in said shed;
- and
- a yarn brake for braking a weft yarn during transfer between said rapiers, said yarn brake comprising a brake band, a braking member for pressing a weft yarn against said brake band;
- an actuating motor having a rotatable shaft, means connected between said shaft and said member for driving said braking member with a linear movement in response to rotation of said shaft, and a triggering and logic circuit arrangement for driving said motor.
2 more elements
Dependencies are inferred from the claim text.