Back to results
US 5,005,499 AGranted
Device for disabling and enabling stitching needles in a quilting machine or a multi-needle embroidery machine
OwnerGiannino Landoniinventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerGiannino Landoniinventor
Estimating the term…
A device for disabling and enabling one or more needles in a quilting machine, a multi-needle embroidery machine, or the like, is described. The device comprises a linear actuator (24) adapted to carry a needle (22) and to keep the latter, for a predetermined time, in a raised position relative to fabric (10) to be sewn. The device includes stitching yarn (44) return means (38) being actuated when needle (22) is disabled, in order to subject to a limited tension the portion of stitching yarn located between the disabled needle and the fabric to be sewn, to prevent the yarn from becoming tangled and from breaking. Furthermore, during the entire operating stage as mentioned above, the known yarn tensioning device (48) through which the stitching yarn is led before arriving at the needle, is disabled.
A device for disabling and enabling one or more stitching needles in a machine provided with at least one needle-carrier bar having a plurality of stitching needles arranged thereon characterized in that it comprises a linear actuator (24) for disabling a needle (22), adapted to control the raising thereof relative to fabric (10) to be sewn, and to keep it in said position, and return means (38) for stitching yarn (44) of the disabled needle (22), adapted to subject to a limited tension the portion of the stitching yarn lying between the disabled needle (22) and fabric (10) to be sewn, said stitching yarn return means being enabled simultaneously to the disabling of a yarn tensioning device (48) which was operating when the disabled stitching needle (22) was sewing.
Dependencies are inferred from the claim text.