# US 4,395,962 A · Straight stitch throat plate for a sewing machine

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- Number: US 4,395,962 A
- Document ID: US4395962A
- Status: Granted
- Kind: A
- Application number: 06/304,741
- Filed: 1981-09-23
- Granted: 1983-08-02
- Earliest claimed: 1981-09-23
- Assignees: The Singer Company
- Inventors: Charles R. Odermann
- Web page: https://patentgrep.com/patent/US4395962A

## CPC

- D05B 73/12: Slides; Needle plates
- D05B: SEWING (appliances for the tailoring trade A41H; sewing tables A47B29/00; sewing in bookbinding B42B2/00; sewing machines modified for knitting D04B39/08)

## Abstract

A straight stitch throat plate for a sewing machine is formed as a resilient thin sheet metal part with integral appendages including a depending rear tab which hooks under the edge of a feed dog slot in a zig-zag plate, laterally spaced depending tabs which are received in locator holes in the zig-zag place, and a bent down flange to extend over a front edge of the zig-zag plate into a position wherein the flange may be engaged by a slide plate on the sewing machine.

## Claims

### Claim 1

A straight stitch throat plate attachable to a zig-zag throat plate in a sewing machine, both of the plates being slotted to accommodate feed dog members, and said zig-zag plate including laterally spaced locator holes, said straight stitch throat plate being a thin sheet metal part which is formed from a resilient metal and which is flat except for integral appendages including a depending rear tab which hooks under an edge of a feed dog slot in the zig-zag plate, laterally spaced depending tabs which are received in said locator holes, and a bent down flange to extend over a front edge of the zig-zag plate into a position wherein the flange may be engaged by a slide plate.

### Claim 2 (depends on 1)

A straight stitch throat plate as defined in claim 1 wherein said rear tab is centrally located with respect to side edges of the straight stitch plate, and hooks under an edge of a zig-zag plate slot.

### Claim 3 (depends on 1)

A straight stitch throat plate as defined in claim 1 wherein said straight stitch throat plate is stainless steel.

### Claim 4 (depends on 1)

A straight stitch throat plate as defined in claim 1 including in addition to a needle hole for straight stitching, a safety hole on each side thereof through which a needle may pass if moved to form a zig-zag stitch, and a solid portion of the straight stitch throat plate between the needle hole for straight stitching and each safety hole for the support of material to be sewed.

### Claim 5 (depends on 1)

A straight stitch throat plate as defined in claim 1 including a front tab to extend under the slide plate.

### Claim 6 (depends on 1)

A straight stitch throat plate as defined in claim 1 wherein the sheet metal of the straight stitch throat plate is less than half a millimeter in thickness.