Sewing device for use in multi-needle sewing machine

• US 4,667,611 A
• Filed: 04/30/1986
• Issued: 05/26/1987
• Est. Priority Date: 07/31/1984
• Status: Expired due to Fees

• Current Assignee: Morimoto Mfg. Co., Ltd.
• Original Assignee: Morimoto Mfg. Co., Ltd.
• Inventors: Yamamoto, Masaya, Ikeda, Kenji
• Primary Examiner(s): Hunter, H. Hampton
• Application Number:
  US06/857,923
• Time in Patent Office: 391 Days
• Field of Search: 112/166, 112/165, 112/167, 112/163, 112/199, 112/226, 112/235, 112/260
• US Class Current: 112/166
• CPC Class Codes: D05B 27/02 with feed dogs having horizontal and vertical movements
• CPC Class Codes: D05B 29/06 Presser feet
• CPC Class Codes: D05B 55/02 Devices for fastening needles to needle bars
• CPC Class Codes: D05B 55/12 with provision for varying the distance between the needles
• CPC Class Codes: D05B 57/02 for chain-stitch sewing machines, e.g. oscillating
• CPC Class Codes: D05B 61/00 Loop holders; Loop spreaders; Stitch-forming fingers
• CPC Class Codes: D05B 73/12 Slides; Needle plates

Abstract

A sewing device for use in multi-needle sewing machine comprising a plurality of needles, presser feet, throat plates, feed dogs and loopers arranged in parallel with each other, and optionally a plurality of spreaders arranged in parallel with each other. Each needle holder on which each needle is set is supported on a needle bed in a manner slidable in the direction of the row of needles and is fixed to any slided position by tightening each set screw. Each interval between needles are changed by changing the fixing position of each needle holder. Each presser foot, throat plate, feed dog, looper and spreader are respectively held by the presser foot holder, throat plate holder, feed dog holder, looper holder and spreader holder in a slidable manner along the direction parallel with the row of needles, and are fixed to the required positions corresponding to each of changed needle interval.

Claims

1. A sewing device for use in multi-needle sewing machines comprising:

a needle unit with a plurality of needles arranged in a row, in which a needle holder for each of said plurality of needles is supported on a needle bed in a manner slidable in a direction parallel with the row of needls and in which means for fixing each needle holder to any slided position is provided;

a presser foot unit with a plurality of presser feet, in which each of said presser feet is held on a presser foot holder in a manner slidable in a direction parallel with the row of needles in which means for fixing each presser foot to any slided position is provided;

a throat plate unit with a plurality of throat plates of at least one type and width, in which each of said throat plates is held on a throat plate holder in a manner slidable in the direction parallel with the row of needles and in which means for fixing each throat plate to any slided position is provided;

a feed dog unit with a plurality of feed dogs of at least one type and width, in which each of said feed dogs is held on a feed dog holder in a manner slidable in the direction parallel with the row of needles and in which means for fixing each feed dog to any slided position is provided; and

a looper unit with a plurality of loopers, in which each of said loopers is held on a looper holder in a manner slidable in the direction parallel with the row of needles and in which means for fixing each looper to any slided position is provided;

whereby the interval between the needles of the needle unit, the presser feet of the presser foot unit, the throat plates of the throat plate unit, the feed dogs of the feed dog unit and the loopers of the looper unit can be adjusted and varied.

2. A sewing device for use in multi-needle sewing machines according to claim 1, wherein a spreader unit with a plurality of spreaders is provided in which each spreader is held on a spreader holder in a manner slidable in the direction parallel with the row of needles and in which means for fixing each spreader to any slided position are provided.

3. A sewing device for use in multi-needle sewing machines according to claim 1, wherein said means for fixing each needle holder comprises a lengthwise hole formed on the needle bed and extending in the direction parallel with the row of needles and a plurality of set screws which are inserted in said lengthwise hole and screwed into each needle holder, and by tightening said set screws each needle holder is fixed to the needle bed.

4. A sewing device for use in multi-needle sewing machines according to claim 1, wherein said means for fixing each presser foot comprises a plurality of set screws which are each screwed into a presser foot mounted slidably on a rod extending along the direction parallel with the row of needles, and by tightening said screws so as to be pressed on the rod each presser foot is fixed to the presser foot holder.

5. A sewing device for use in multi-needle sewing machines according to claim 1, wherein said means for fixing each throat plate comprises a lengthwise hole formed on the throat plate holder and extending in a direction parallel with the row of needles and a plurality of set screws which are inserted in said lengthwise hole after passing through each throat plate and screwed onto a nut member, and by tightening said set screws each throat plate is fixed to the throat plate holder.

6. A sewing device for use in multi-needle sewing machines according to claim 1, wherein said means for fixing each feed dog comprises a lengthwise hole formed on the feed dog holder and extending in a direction parallel with the row of needles and a plurality of set screws which are inserted in said lengthwise hole after passing through each feed dog onto a nut member, and by tightening said set screws each feed dog is fixed to said feed dog holder.

7. A sewing device for use in multi-needle sewing machines according to claim 1, wherein a looper is mounted on a looper retaining member.

8. A sewing device for use in multi-needle sewing machines according to claim 7, wherein said means for fixing each looper comprises a lengthwise hole formed on the looper holder and extending in a direction parallel with the row of needles and a plurality of set screws which are inserted in said lengthwise hole after passing through each looper retaining member and screwed into a nut member, and by tightening said set screw each looper is fixed to the looper holder.

9. A sewing device for use in multi-needle sewing machines according to claim 2, wherein each spreader is mounted on a spreader retaining member.

10. A sewing device for use in multi-needle sewing machings according to claim 9, wherein said means for fixing each spreader comprises a lengthwise hole formed on the spreader holder and extending in a direction parallel with the row of needles and a plurality of set screws which are inserted in said lengthwise hole and screwed in each spreader retaining member, and by tightening said set screws each spreader is fixed to the spreader holder.

11. A sewing device for use in multi-needle sewing machines according to claim 1, wherein at least two different types of throat plates with at least two different widths are utilized in said throat plate unit.

12. A sewing device for use in multi-needle sewing machines according to claim 11, wherein at least two different types of feed dogs of at least two different widths are utilized in the feed dog unit.