Torsion bar type warp tensioning device for a loom
AssigneeSulzer Brothers Limited
InventorsAngelo Stacher, Rudolf Vogel
Life of this patent
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Abstract
A tensioning device of a loom is embodied by a tensioning element rotatably mounted on a plurality of rollers which, in turn, are supported at spaced apart bearing places on a drive shaft. The drive shaft is biased by a torsion bar acted on its end by an adjusting mechanism driven by means of an eccentric. The tensioning device comprises a reduced number of parts of reduced dimension and can therefore adapt very rapidly to changes in the position of the warp yarns. The tensioning device is particularly suitable for high-speed looms which process delicate warp yarns.
Claims9
A tensioning device for a loom comprising
- a drive shaft disposed for pivoting about a pivot axis;
- a torsion bar disposed coaxially within said drive shaft on said pivot axis, said bar being connected to said shaft;
- an adjusting mechanism connected to said torsion bar for adjusting the biasing of said bar at the cadence of a loom cycle;
- a warp tensioning element disposed on a second axis parallel to said pivot axis of said drive shaft;
- and
- a plurality of mounting means secured to said drive shaft in spaced apart relation for rotation therewith and having said tensioning element rotatably mounted thereon for rotation about said second axis.
In a loom, the combination of
- a deflecting element disposed on a first axis for deflecting a plurality of warp yarns thereover;
- a tensioning element disposed on a second axis parallel to said first axis and downstream of said deflecting element for deflecting the warp yarns thereover;
- a drive shaft disposed for pivoting about a pivot axis parallel to said first axis;
- a torsion bar disposed coaxially within said drive shaft on said pivot axis, said bar being connected to said shaft;
- an adjusting mechanism connected to said torsion bar for adjusting the biasing of said bar at the cadence of a loom cycle;
- and
- a plurality of mounting means secured to said drive shaft in spaced apart relation for rotation therewith and having said tensioning element rotatably mounted thereon for rotation about said second axis.
Dependencies are inferred from the claim text.