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US 5,634,417 AGranted
Fabric presser foot device of a sewing machine
AssigneeAisin Seiki Kabushiki Kaisha
InventorYutaka Katou
Life of this patent
Estimating the term…
Abstract
A presser bar 11 is provided at its lower end with a fabric presser foot 13 and a nut 16. The fabric presser foot 13 is individually moved on the presser bar 11 independent of a reciprocating motion of the presser bar 11. Due to an action of a spring 14 the presser foot 13 is resiliently pressed against a fabric 40 to be sewn to reduce a noise while a needle is associated with a hook or shuttle 26.
Claims2
A fabric presser foot device for a sewing machine comprising:
- a presser bar reciprocable in a vertical plane in response to a rotation of a main shaft of the sewing machine;
- a fabric presser foot slidably mounted on a lower end of the presser bar;
- a biasing means for urging the fabric presser foot downward;
- and
- a presser bar driving means for moving the fabric presser foot to a position where the fabric is pressed by the fabric presser foot when a top thread is taken up by a cone point of a rotating hook located below a needle plate;
- wherein the fabric presser foot includes a pair of horizontal plate portions spaced away from each other through which the presser bar passes, a vertical plate portion connecting the horizontal plate portions, and a fabric pressing plate portion extending from one of the horizontal plate portions;
- said presser bar comprising a stepped portion and the biasing means is a coil spring disposed between the stepped portion of the presser bar and one of the horizontal plate portions.
4 more elements
Dependencies are inferred from the claim text.