A sewing apparatus for applying a stitch of thread to a piece of fabric is provided. The apparatus housing includes a platform for supporting a piece of fabric, and contains a grasping member that is moved to grasp and release a thread segment fed through the housing by a needle holder. The needle holder is positioned to hold a needle that has a needle aperture for pass-through, therethrough of the thread segment, and is movable between a withdrawn position, and an advanced position in which the needle holder drives the needle through the piece of fabric to bring the thread segment into position for grasping by the grasping member. The sewing apparatus also including a needle holder driver for driving the movement of the needle holder and a thread puller for pulling the thread segment to an exterior of the housing for a user to cut.

A sewing apparatus for applying a stitch of thread to a piece of fabric is provided. The apparatus housing includes a platform for supporting a piece of fabric, and contains a grasping member that is moved to grasp and release a thread segment fed through the housing by a needle holder. The needle holder is positioned to hold a needle that has a needle aperture for pass-through, therethrough of the thread segment, and is movable between a withdrawn position, and an advanced position in which the needle holder drives the needle through the piece of fabric to bring the thread segment into position for grasping by the grasping member. The sewing apparatus also including a needle holder driver for driving the movement of the needle holder and a thread puller for pulling the thread segment to an exterior of the housing for a user to cut.

An item may be formed from structures that include holes. Stitching may be used to form a seam that joins the structures. The stitching may be formed from a chain stitch that passes through the holes. The holes may be formed from loops of knit fabric or other holes. Leather layers, polymer layers, fabric layers, and other structures with holes may be joined using the stitching. During fabrication, a layer of material with holes may be placed on an adjustable-shape fixture having a bed of needles. The shape of the bed of nails in the adjustable-shape fixture may then be changed. After the fixture has been used to transform the shape of one or more of the structures, the structures may be placed on needles in an assembly fixture and the stitching between the structures may be formed. The item may be an electronic device cover or other item.

An item may be formed from structures that include holes. Stitching may be used to form a seam that joins the structures. The stitching may be formed from a chain stitch that passes through the holes. The holes may be formed from loops of knit fabric or other holes. Leather layers, polymer layers, fabric layers, and other structures with holes may be joined using the stitching. During fabrication, a layer of material with holes may be placed on an adjustable-shape fixture having a bed of needles. The shape of the bed of nails in the adjustable-shape fixture may then be changed. After the fixture has been used to transform the shape of one or more of the structures, the structures may be placed on needles in an assembly fixture and the stitching between the structures may be formed. The item may be an electronic device cover or other item.

An apparatus and method for applying stitches to a decorative component having a three dimensional configuration is provided. A head for applying stitches to a decorative component having a three dimensional configuration, including: a needle bar assembly operatively coupled to the head; a looper configured to cooperate with the needle bar assembly in order to prove a plurality of stitches in the decorative component, the looper rotating in a plane parallel to the decorative component; a post assembly configured to drive the looper in a reciprocating fashion in the plane, wherein the post assembly is operatively coupled to a motor configured to drive the needle bar assembly in a reciprocating fashion, the post assembly being operatively coupled to the head via a cylinder arm assembly and a downshaft assembly; and wherein the cylinder arm assembly is rotated in a synchronized manner with a rock frame through mechanical linkage connecting a rock frame drive shaft to the cylinder arm assembly.

An apparatus and method for applying stitches to a decorative component having a three dimensional configuration is provided. A head for applying stitches to a decorative component having a three dimensional configuration, including: a needle bar assembly operatively coupled to the head; a looper configured to cooperate with the needle bar assembly in order to prove a plurality of stitches in the decorative component, the looper rotating in a plane parallel to the decorative component; a post assembly configured to drive the looper in a reciprocating fashion in the plane, wherein the post assembly is operatively coupled to a motor configured to drive the needle bar assembly in a reciprocating fashion, the post assembly being operatively coupled to the head via a cylinder arm assembly and a downshaft assembly; and wherein the cylinder arm assembly is rotated in a synchronized manner with a rock frame through mechanical linkage connecting a rock frame drive shaft to the cylinder arm assembly.

A sewing machine includes a horizontal hook that is held within an outer hook and an accommodating portion of the outer hook that includes a spiral-shaped columnar portion to which the thread loop captured by the hook point is wound. The sewing machine also includes a chain looper that guide the thread loop induced in spiral shape upward, and an inner hook for chain stitching that is supported by the outer hook that restricting upward movement of the thread loop drawn into the interior of the outer hook.

A sewing machine includes a horizontal hook that is held within an outer hook and an accommodating portion of the outer hook that includes a spiral-shaped columnar portion to which the thread loop captured by the hook point is wound. The sewing machine also includes a chain looper that guide the thread loop induced in spiral shape upward, and an inner hook for chain stitching that is supported by the outer hook that restricting upward movement of the thread loop drawn into the interior of the outer hook.

A method of applying stitching to an interior component is provided herein. The interior component having only a single layer of a substrate layer. The method including the steps of: a) penetrating substrate layer with an awl to form a piercing therethrough; b) retracting the awl from the substrate layer; c) inserting a needle of a sewing head through the piercing through the substrate layer to grasp a thread positioned on a show surface of the outer skin layer; d) pulling the thread through the substrate layer; e) looping the thread with a previous stitch passed through the substrate layer; f) advancing the sewing head to another position with respect to the interior component, wherein a backside of the substrate layer is free of obstructions; and g) repeating steps a-f until a predetermined amount of stitches are applied to the interior component.

A method of applying stitching to an interior component is provided herein. The interior component having only a single layer of a substrate layer. The method including the steps of: a) penetrating substrate layer with an awl to form a piercing therethrough; b) retracting the awl from the substrate layer; c) inserting a needle of a sewing head through the piercing through the substrate layer to grasp a thread positioned on a show surface of the outer skin layer; d) pulling the thread through the substrate layer; e) looping the thread with a previous stitch passed through the substrate layer; f) advancing the sewing head to another position with respect to the interior component, wherein a backside of the substrate layer is free of obstructions; and g) repeating steps a-f until a predetermined amount of stitches are applied to the interior component.