Sewing machine
OwnerGeorg Janouschekinventor
Life of this patent
Estimating the term…
Abstract
A sewing machine having two needles (8, 9) that are at an angle (alpha) to the vertical axis of a piercer (C) is provided. After the piercer has pierced the item to be sewn with a tip thereof, the needles pierce through vertical slits (27) in the piercer (C). The two needles are driven in a direction of the respective axis thereof, i.e., in a direction of the axes (V1, V2).
Claims8
Sewing machine comprising at least one needle (8) for creating a hemstitch in a fabric (1) and a feed dog (31) for advancing the fabric, wherein an axis (V1) of the at least one needle (8) extends at an acute angle (alpha) to an axis (Y) of at least one piercer (C), the needle (8) is driven by a needle bar drive in a direction of the axis (V1), and the piercer (C) is driven by a piercer drive in a direction of the axis (Y) of the piercer (C), the at least one piercer (C), viewed in a sewing direction (5), is arranged at a side of the needle (8) and comprises a slot (27) extending in the piercer (C) or at least one side groove (28) formed on a periphery of the piercer (C), through which the at least one needle (8) can pass laterally within a piercer cross section during stitch formation, and the at least one needle comprises two needles (8, 9) arranged axially symmetric to the piercer (C) lying in a V shape which cross in the slot (27) in the piercer (C) or in the at least one side groove (28) during the stitch formation within the piercer cross section.
Sewing machine comprising at least one needle (8) for creating a hemstitch in a fabric (1) and a feed dog (31) for advancing the fabric, wherein an axis (V1) of the at least one needle (8) extends at an acute angle (alpha) to an axis (Y) of at least one piercer (C), the needle (8) is driven by a needle bar drive in a direction of the axis (V1), and the piercer (C) is driven by a piercer drive in a direction of the axis (Y) of the piercer (C), wherein the feed dog (31) comprises two advancing belts (33), which can be driven to rotate in parallel and having upper belt sections that project over a needle plate (21) of the sewing machine, and/or there is at least one advancing wheel (34, 35), which can be driven and which interacts with a holder wheel on a presser bar during sewing and advances the fabric (1) in a clamped manner.
Sewing machine comprising at least one needle (8) for creating a hemstitch in a fabric (1) and a feed dog (31) for advancing the fabric, wherein an axis (V1) of the at least one needle (8) extends at an acute angle (alpha) to an axis (Y) of at least one piercer (C), the needle (8) is driven by a needle bar drive in a direction of the axis (V1), and the piercer (C) is driven by a piercer drive in a direction of the axis (Y) of the piercer (C), wherein a drive element for the at least one piercer (C) is housed in a separate housing (51), which can be mounted on the sewing machine and which can be connected to a controller and power supply of the sewing machine, and the piercer axis (y) lies at an acute angle to a needle plate (21) of the sewing machine and can be driven in agreement with the needle drive.
Dependencies are inferred from the claim text.