Patent US3690591A successfully refreshed from Google Patents.
Patent US3762348A successfully refreshed from Google Patents.
US3762348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for top stitching cuffs or the like workpiece parts
Assignee: Kochs Adler AG
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Filing: 1971-10-18
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Granted: 1973-10-02
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Expires: 1991-10-18
Abstract
Abstract Workpiece clamping means for use with sewing machines for the purpose of topstitching joined and subsequently turned layers of workpiece cuts such as cuffs or similar workpiece parts for garments. The workpiece clamping means are provided with a plurality of individually spring-mounted clamping units for clamping the workpiece parts at their external zones. For inserting the joined and turned workpiece parts into the workpiece clamping means, there is provided a device for receiving and inserting. Furthermore, the workpiece clamping means are suitable for use in an automatic sewing device, in which solely the insertion of the workpiece parts is made manually, whereas the top stitching, the cutting-off of the thread chain between two neighbouring workpiece parts, the removing from the clamping means and the stacking is carried out sutomatically. The workpiece clamping means may be developed in such a manner, that they may be used with an adjustable rotary table, thus offering the possibility of adjusting simultaneously all workpiece clamping means on the rotary table to a desired workpiece size by means of a central adjusting device.
Inventors
- 👤 H Junemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:22
CPC Classifications
D; D05; D05B; D05B39/00; D05B23/00; D05B29/00; D05B29/06; D05B65/00; D05B73/00; D05B73/04; D05B73/12; D05D; D05D2207/00; D05D2207/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
238 words
A device for top-stitching joined and turned cuffs or the like workpiece parts for garments, comprising, in combination, a support member, a sewing machine carried by said support member and having a work supporting bed and stitch forming means, means for guiding said workpiece parts relative to the needle of said sewing machine, workpiece clamping means for clamping a left half and a right half of said workpiece parts at their external zones, including two segments displaceably supported in a radial plane by said support member, two symmetric lower workpiece clamping plates carried by said segments, two symmetric lifting plates carried by said workpiece clamping plates, a plurality of individually spring-mounted clamping units pressing upon the external portions of said workpiece parts, a clamping rail movably and clampably received in said lower workpiece clamping plates and having a workpiece supporting surface and a bearing surface for said workpiece parts, a rail carrying said individually spring-mounted clamping units, carrying brackets secured to said rail and having an U-shaped part, said lifting plates projecting into said U-shaped part, plate springs between said carrying brackets and said clamping rail, pressure springs between said workpiece clamping plates and said lifting plates, and adjustable thrust bolts secured to said lifting plates for transmitting the spring tension of said pressure springs to said rail carrying said clamping units, and means for receiving and inserting joined and turned workpiece parts into said workpiece clamping means.
Claim 2
Independent Claim
238 words
A device for top-stitching joined and turned cuffs or the like workpiece parts for garments, comprising, in combination, a support member, a sewing machine carried by said support member and having a work supporting bed and stitch forming means, means for guiding said workpiece parts relative to the needle of said sewing machine, workpiece clamping means for clamping a left half and a right half of said workpiece parts at their external zones, including two segments displaceably supported in a radial plane by said support member, two symmetric lower workpiece clamping plates carried by said segments, two symmetric lifting plates carried by said workpiece clamping plates, a plurality of individually spring-mounted clamping units pressing upon the external portions of said workpiece parts, a clamping rail movably and clampably received in said lower workpiece clamping plates and having a workpiece supporting surface and a bearing surface for said workpiece parts, a rail carrying said individually spring-mounted clamping units, carrying brackets secured to said rail and having an U-shaped part, said lifting plates projecting into said U-shaped part, plate springs between said carrying brackets and said clamping rail, pressure springs between said workpiece clamping plates and said lifting plates, and adjustable thrust bolts secured to said lifting plates for transmitting the spring tension of said pressure springs to said rail carrying said clamping units, and means for receiving and inserting joined and turned workpiece parts into said workpiece clamping means.
Claim 3
Dependent Claim
62 words
The combination according to claim 1, further comprising additional side clamping units secured to said two symmetric lifting plates angularly extending to said clamping units carried by said rail, adapting pieces secured to said clamping plates and having bearing edges corresponding to the side edge of said workpiece parts, the workpiece supporting surfaces at the edges of said lower workpiece clamping plates.
Claim 4
Dependent Claim
80 words
The combination according to claim 1, wherein each of said individually spring-mounted clamping units comprises a clamp lever, a holding plate secured to said rail and having a bore, a flat spring between said clamp lever and said holding plate, adjustable setscrews received in said holding plate and bearing upon said flat springs, and a carrier bolt secured to said clamp lever and passing through said bore for causing said clamp to be taken along during lifting of said rail.
Claim 5
Dependent Claim
82 words
The combination according to claim 1, wherein said additional side clamping units comprising a clamp lever, a holding plate secured to said lifting plate and having a bore, a distance piece between said holding plate and said lifting plate, a flat spring between said clamp lever and said holding plate, adjustable setscrews received in said holding plate and bearing upon said flat springs, and a carried bolt secured to said clamp lever to be taken along during lifting of said lifting plates.
Claim 6
Dependent Claim
90 words
The combination according to claim 2, wherein said means for receiving and inserting said joined and turned workpiece parts into said workpiece clamp holder means includes a carrier displaceable in the direction to said workpiece clamp holder means carried by said segments of said support member, a sword removably secured to said carrier and formed corresponding to the form of said workpiece parts, said sword having a beveling at the external zones, supporting rods for receiving said displaceable carrier, and driving means for moving said carrier on said supporting rods.
Claim 7
Dependent Claim
110 words
The combination according to claim 5, wherein said carrier is provided with two arms and said means for receiving and inserting said joined and turned workpiece parts into said workpiece clamp holder means further includes a shaft pivoted on said two arms, an actuating lever clamped to said shaft, a pneumatic cylinder for actuating said lever and said shaft, clamping levers clamped upon said shaft, a bar secured to the free ends of said levers, a swiveling member carrying said sword and slidably received on said bar, two pressure springs arranged on said bar and acting in opposite directions upon said swiveling member for holding it in a neutral position.
Claim 8
Independent Claim
231 words
A device for top-stitching joined and turned cuffs or the like workpiece parts for garments, including,in combination, a support member, a driven shaft for vertical rotation on said support member, a rotary table carried by said shaft, workpiece clamp holder means situated on and around said rotary table for receiving said workpiece parts, a pattern-controlled sewing machine swingably secured to said support member, a device for inserting said joined and turned workpiece parts into said workpiece clamp holder means comprising a supporting arm pivoted about said driven shaft, supporting rods carried by said supporting arm, a carrier displaceably mounted on said supporting rods, driving means for moving said carrier in the direction to said workpiece clamp holder means, a sword removably secured to said carrier and formed corresponding to the form of said workpiece parts, said sword having a beveling at the external zones, means for placing said sword into a vertical position, means for the automatic alignment of said workpiece parts received on said sword in conformity with one of said workpiece clamp holder means, including striker bars secured to said rotary table, a follower means situated on said supporting arm and shiftable into the path of motion of said striker bars, a bearing member determining the start position of said supporting arm, an air cylinder for actuating said follower means, and a retracting spring acting upon said supporting arm.
Claim 9
Independent Claim
231 words
A device for top-stitching joined and turned cuffs or the like workpiece parts for garments, including,in combination, a support member, a driven shaft for vertical rotation on said support member, a rotary table carried by said shaft, workpiece clamp holder means situated on and around said rotary table for receiving said workpiece parts, a pattern-controlled sewing machine swingably secured to said support member, a device for inserting said joined and turned workpiece parts into said workpiece clamp holder means comprising a supporting arm pivoted about said driven shaft, supporting rods carried by said supporting arm, a carrier displaceably mounted on said supporting rods, driving means for moving said carrier in the direction to said workpiece clamp holder means, a sword removably secured to said carrier and formed corresponding to the form of said workpiece parts, said sword having a beveling at the external zones, means for placing said sword into a vertical position, means for the automatic alignment of said workpiece parts received on said sword in conformity with one of said workpiece clamp holder means, including striker bars secured to said rotary table, a follower means situated on said supporting arm and shiftable into the path of motion of said striker bars, a bearing member determining the start position of said supporting arm, an air cylinder for actuating said follower means, and a retracting spring acting upon said supporting arm.
Claim 10
Dependent Claim
110 words
The device according to claim 7, further including thread cutting means for cutting off the thread chains between two workpiece parts after top-stitching by said sewing machine, said thread cutting means comprising a movable beam, two thread cutter units adjustably secured to said movable beam, hinged arms linked to said movable beam and said support member, two rollers pivoted on said movable beam, a tension spring for pressing said rollers against the peripheral area of said rotary table, an engaging piece cooperating with said striker bars for taking along said movable beam with said rotary table, and an air cylinder secured to said movable beam and carrying said engaging piece.
Claim 11
Dependent Claim
46 words
The device according to claim 8, comprising angle pieces secured to said movable beam, adjustable stop screws screwed in said angle pieces for limiting the rotating motion of said movable beam, and check nuts on said stop screws for securing the adjustment of said stop screws.
Claim 12
Dependent Claim
123 words
The device according to claim 8, wherein each of said thread cutter units includes an air cylinder carried by said movable beam, a knife-carrier carried by the piston rod of said air cylinder, a guide plate secured to said air air cylinder and having two openings, a guide rod fastened to said knife-carrier and guided in one of said openings, a fixed counterknife secured to said knife carrier, a movable cutting blade pivoted to said knive carrier, a torsion spring pressing said cutting blade against said counterknife and keeping said knives in a starting position, a rod linked to said cutting blade and guided in said second opening of said guide plate, and thread guided for said thread chains between two workpiece parts.
Claim 13
Dependent Claim
48 words
The device according to claim 10, wherein each of said thread cutter units further includes a first clamping member for receiving said air cylinder, a L-shaped holding rod carrying said clamping member, and a second clamping member secured to said movable beam and carrying said L-shaped holding rod.
Claim 14
Dependent Claim
21 words
The device as claimed in claim 7, further including a workpiece removing and stacking device arranged behind said thread cutting means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |