Abstract:
In at least one implementation, a method for forming openings for a stitched seam in a composite panel having an outer layer, and a substrate behind the outer layer includes providing a laser beam onto the substrate, with the laser beam forming an opening through the substrate but not through the outer layer, and moving at least one of the laser or the substrate relative to the other so that a new opening can be formed that is spaced from the already formed opening. Successive openings can be formed in desired locations around the panel to facilitate subsequent panel stitching. In at least some implementations, the laser may form such openings while stitches are formed in the panel, wherein a stitch is provided in a previous opening while or nearly at the same time the laser forms a different opening for a subsequent stitch.
Abstract:
A sewing machine body includes a base with an upright part connected to a top of an end of the base and an arm which is connected to a distal end of the upright part. Each of the base, the upright part and the arm includes a hollow interior which is defined by four sidewalls or three sidewalls. Four connection plates are respectively welded to the arm and the upright, and the upright part and the base. The welding seams of the connection plates and the arm and the base are parallel to the arm.
Abstract:
Method and apparatus for automatically providing notching indicia on the edge of a garment subassembly to provide a dimensional reference to be utilized in subsequent fabrication of the goods. A conveyor transports the garment subassembly to a notching station at which the pre-assembled parts are secured in accurate registration to the path of a notching device that is movable on a carriage toward and away from the notching station. The notching device includes a vertically extending notching blade having a recessed cutting edge which, when positioned at the notching station, overlies an edge of the garment part subassembly. On displacing the blade downward, the notch indicia is cut into the garment piece after which the notching unit is withdrawn to a home position while the notched part is transported by the conveyor to a subsequent fabrication step. In a preferred embodiment two notching devices supported in a common path on opposite sides of the notching station are utilized. The two separate notching devices are selectively operated for notching a garment subassembly relative to the orientation of the subassembly in the finished fabricated garment goods. The carriage is motor driven to move the notching units to and from the notching station in timed relation to the securement of subassembly garment goods thereat.
Abstract:
A knife operating device for sewing machines includes a needle stub pivotally mounted to the front part of a rocking arm. The rocking arm intersects with a needle stub guiding bar and is pivotally mounted and its rear end. A knife holder is, also, connected to the rocking arm and is guided so as to be movable with the needle stub.
Abstract:
An apparatus for removing both cut threads and trimmed edges from the working area of a sewing machine with a unit having a first air passage coupled to the area for removing trimmed edges, a second air passage coupled to the area for removing trimmed edges and opening into the first passage at an acute angle in an elliptically shaped opening to inject an air stream into the first passage to transfer momentum and cause air flow, the second passage comprising two tubular members one inside the other with the outer opening into the first passage, and a third air passage injecting air at a pressure above atmospheric pressure at an angle in an elliptically shaped opening to transfer momentum and create air flow through said second passage.
Abstract:
The device includes a displaceable workpiece clamp on a twoneedle sewing machine which is pivotable about a pivot axis coinciding with the axis of symmetry of the needles into selected angular positions defined by the displacement direction of the clamp and the longitudinal axis of the sewing machine arm shaft, the sewing machine being lockable in adjusted positions. A guide mechanism is provided for folding a braid strip, and a cutting knife is provided to make a longitudinal slit and works between the two needles, the cutting knife being driven by a drive member included in the sewing machine. A set of individually controllable angle knives are provided for making diverging incisions at the ends of the longitudinal slit. The angle knives are mounted separately from the sewing machine for conjoint rotation about respective axes each of which is parallel to the motion path of the associated angle knife, and a crank and link arrangement connects the angle knives to the sewing machine for positive angular adjustment responsive to pivoting of the sewing machine. A support for the cutting knife is mounted separately from the sewing machine and is slidable on fixed guides. The mounting for the cutting knife support is formed with an elongated slot having generally a figure eight configuration, and the cutting knife drive member extends through this slot and is coupled to the cutting knife support, the arrangement providing for relative movement between the cutting knife support and its drive member.