Sewing machine
AssigneeMattel, Inc.
InventorsSidney Bass, Hubert Allen Rich
Life of this patent
Estimating the term…
Abstract
An electrically operated chain stitch sewing maching having a cartridge carrying a spool of thread and a pre-threaded needle mounted in the side of the head, the needle being normally biased in a retracted position within the cartridge and being actuated by a crank arm provided with means for rendering an electrical switch inoperative until the needle is retracted into the cartridge. The bed of the machine is provided with a thread looping subassembly actuated by the needle.
Claims12
In a sewing machine, the combination comprising:
- a housing having a bed and an overhanging bracket arm terminating in a head, said head having a recessed surface in a side thereof with said surface generally perpendicular to said bed;
- a driving member rotatably mounted in said housing and having a portion thereof extending outwardly through an aperture in said recessed surface;
- means within said housing for rotating said driving member;
- a cartridge engaging said head within said recessed surface, said cartridge having a planar surface with an aperture therein in communication with said portion of said driving member;
- a needle carrier slidably mounted on said planar surface within said cartridge for actuation by said driving member for reciprocating movement toward and away from said bed;
- a needle secured to said needle carrier, said cartridge having an opening in alignment with said needle and in proximity to said bed for passage therethrough of said needle, said needle being substantially contained within said cartridge with said needle carrier at its maximum distance away from said bed;
- and
- looping means within said bed for coacting with said needle whereby to generate a stitch in material sewn on said sewing machine.
In a cartridge for use in a sewing maching having a bed and an overhanging bracket arm terminating in a head having a recessed surface in the side thereof with a rotatable driving member engagable through an opening in said surface, said cartridge comprising:
- a first member having a generally planar surface adapted to abut the recessed surface, said planar surface having an aperture therein in axial alignment with said driving member;
- a needle carrier slidably mounted on said planar surface and having a portion adjacent said aperture engagable by said driving member for reciprocating said needle carrier with respect to said planar surface;
- a needle secured to said needle carrier;
- a cover secured to said first member to form a generally hollow housing so dimensioned substantially to contain said needle carrier and said needle therein;
- an aperture within said housing in alignment with said needle for passage therethrough of said needle;
- and
- spring means within said housing coupled to said needle carrier normally urging said needle carrier in a direction with said needle fully retracted within said housing.
Dependencies are inferred from the claim text.