US 5,690,040 AGranted

Presser foot device for feeding elastic member

AssigneeThe Singer Company

InventorsKoichi Nakayama, Shinji Kojima

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Abstract

The presser foot device of a sewing machine comprises a presser foot 2, a tension mechanism 3 disposed on the presser foot 2 and having a presser member 6 which is adjustably movable back and forth, a guide member 4 provided at a tip end portion of the presser foot 2, wherein a given gap .DELTA. is formed between the presser member 6 of the tension mechanism 3 and the guide member 4, and wherein a belt-shaped rubber member 8 supplied toward a needle penetration point N of the presser foot 2 is passed through the given gap .DELTA., thereby giving a given tension to the belt-shaped rubber member 8. As a result, it is possible to provide a presser foot device of a sewing machine capable of easily, stably and variably setting tension applied to a belt-shaped rubber member, thereby improving the quality of the sewn product and to improve the operability of mounting the belt-shaped rubber member therein by ensuring a large opening space.

Claims5

Dependent claims

A presser foot device of a sewing machine comprising:

a presser foot;
a tension mechanism disposed on the presser foot, the tension mechanism including a threaded screw member projecting from the presser foot toward a feeding end of the presser foot, a rigid presser member having a recess and a bore extending along an axial length of the presser member;
a nut having a threaded bore, the nut positioned within the recess of the presser member such that the bore of the nut axially coincides with and is axially fixed in position with respect to the bore of the presser member, the nut and the presser member being positioned on the screw member such that threads of the screw member and the bore of the nut intermesh, the nut being rotatable along the screw member, whereby the presser member is axially movable with the nut along the screw member;
and
a guide member disposed at a feeding end of the presser foot in opposing relationship to the presser member, the guide member and the presser member defining a gap therebetween for receiving an elastic member to extend through the gap in order to supply tension to the elastic member, the gap being adjustable by the movable presser member for varying the tension of the elastic member.

2 more elements

Dependencies are inferred from the claim text.