Patent US579557A successfully refreshed from Google Patents.
Patent US3579876A successfully refreshed from Google Patents.
US3579876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for folding, feeding and pressing pieces of fabric material
Assignee: Carl Schmale GmbH and Co
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Filing: 1967-12-29
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Granted: 1971-05-25
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Expires: 1987-12-29
Abstract
Abstract Apparatus for automatically hemming the edges of pieces of fabric material. The apparatus includes both a mechanism for use in machinery for folding over the edge of a piece of material and a mechanism for feeding the material into and out of the folding mechanism and for pressing the material in the area of the edge before as well as after its edge is folded.
Inventors
- 👤 Hans Freermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:45
CPC Classifications
D; D05; D05B; D05B35/00; D05B35/06; D05B35/062; D05B35/02; D06; D06F; D06F69/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
161 words
Apparatus for folding and pressing the edge of a piece of fabric material comprising, in combination: a. first feeder roller means for pressing said material in the area of said edge and for advancing said material into said apparatus; b. first material folding means arranged to receive said material from said first feeder roller for folding over said edge of said material; c. second feeder roller means aRranged to receive said material from said first folding means for advancing said material away from said first folding means and for pressing said material in the area of said edge; d. second material folding means arranged to receive said material from said second feeder roller for folding over said edge of said material a second time; and e. third feeder roller means arranged to receive said material from said second folding means for advancing said material away from said second folding means and for pressing said material in the area of said edge.
Claim 2
Dependent Claim
161 words
Apparatus for folding and pressing the edge of a piece of fabric material comprising, in combination: a. first feeder roller means for pressing said material in the area of said edge and for advancing said material into said apparatus; b. first material folding means arranged to receive said material from said first feeder roller for folding over said edge of said material; c. second feeder roller means aRranged to receive said material from said first folding means for advancing said material away from said first folding means and for pressing said material in the area of said edge; d. second material folding means arranged to receive said material from said second feeder roller for folding over said edge of said material a second time; and e. third feeder roller means arranged to receive said material from said second folding means for advancing said material away from said second folding means and for pressing said material in the area of said edge.
Claim 3
Dependent Claim
40 words
The apparatus defined in claim 1 wherein each of said first, second and said third feeder roller means includes at least one roller which is rotatably mounted on means for pressing said roller against said material with a prescribed force.
Claim 4
Dependent Claim
29 words
The apparatus defined in claim 2 wherein said roller pressing means includes spring means for producing said force and means for selectively adjusting the tension of said spring means.
Claim 5
Dependent Claim
29 words
The apparatus defined in claim 1 wherein said first and said second material folding means include elongated, helically wound plate means for providing a guiding surface for said edge.
Claim 6
Dependent Claim
48 words
The apparatus defined in claim 4 wherein at least one of said feeder roller means includes a roller having a ring groove and at least one of said plate means includes a portion which projects into said ring groove, thereby to further guide the movement of said material.
Claim 7
Dependent Claim
43 words
The apparatus defined in claim 1 further comprising at least one belt means arranged to pass around at least a portion of said feeder roller means for gripping said material in the region of said edge, thereby to assist in feeding said material.
Claim 8
Dependent Claim
29 words
The apparatus defined in claim 6 further comprising at least one pressure roller means arranged between at least two feeder roller means for pressing said belt against said material.
Claim 9
Dependent Claim
27 words
The apparatus defined in claim 1 wherein said first, second and said third feeder roller means each includes a pair of rollers, arranged one above the other.
Claim 10
Dependent Claim
32 words
The apparatus defined in claim 8 further comprising horizontal plate means for supporting said material, said plate means having openings into which the lower one of of said pair of rollers projects.
Claim 11
Dependent Claim
35 words
The apparatus defined in claim 1 wherein said first, second and said third feeder roller means include a plurality of rollers, and continuously speed adjustable power transmission means for positively driving said plurality of rollers.
Claim 12
Dependent Claim
60 words
The apparatus defined in claim 1 further comprising means for unrolling a tape from a tape roll, cutting a strip from said tape and laying said strip on the edge of said material ahead of said second folding means, thereby to permit said strip to be attached to said edge to serve as a hanger for said piece of material.
Claim 13
Dependent Claim
62 words
The apparatus defined in claim 1 wherein at least one of said first and said second folding means includes guide plate means for folding up said edge of said material at an angle of 90* and rotating disc means arranged parallel to the plane in which said material is fed for folding back said folded edge in the direction of said material.
Claim 14
Dependent Claim
18 words
The apparatus defined in claim 12 wherein the periphery of said rotating disc means is provided with teeth.
Claim 15
Dependent Claim
41 words
The apparatus defined in claim 12 wherein said disc has two faces, one face of which is provided with a projecting collar means, spaced from the periphery of said disc means, for limiting the movement of said edge of said material.
Claim 16
Dependent Claim
42 words
The apparatus defined in claim 12 wherein said at least one of said first and said second folding means further includes guide plate means arranged on the material inlet side of said rotating disc means for limiting the movement of said material.
Claim 17
Dependent Claim
28 words
The apparatus defined in claim 15 wherein said guide plate means is adjustable in position in a direction transverse to the direction in which said material is fed.
Claim 18
Dependent Claim
23 words
The apparatus defined in claim 15 wherein said guide plate means includes bent edge means for supporting the folded edge of said material.
Claim 19
Dependent Claim
68 words
The apparatus defined in claim 12 wherein said at least one of said first and said second folding means further includes wiper means arranged above the periphery of said disc means and extending from said disc means to a point beyond that one of said feeder roller means which follows said disc means, for stripping said material from said disc means and limiting the movement of said material.
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |