Patent US5604709A successfully refreshed from Google Patents.
Patent US3850121A successfully refreshed from Google Patents.
US3850121A
Expired / Lapsed
US
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Hemming machine
Assignee: SPEER BILLY LOGAN CAMPBELLSVILLE
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Filing: 1972-11-06
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Granted: 1974-11-26
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Expires: 1992-11-06
Abstract
Abstract The invention comprises a semi-automatic machine for folding cloth pieces, stitching the folded cloth pieces to form hems thereon, and stacking the stitched pieces into bundles for further processing. In the preferred embodiment the hemming machine utilizes form plates situated just above a conveyor to fold the cloth pieces progressively as they approach the sewing needle. At the sewing needle, a second conveyor, running at a slightly higher linear speed, takes up the folded cloth pieces thereby stretching them to remove unwanted wrinkles and assure an even, smooth stitched hem. The second conveyor carries the cloth pieces to an unloading and stacking mechanism which removes the cloth pieces from the conveyor and flips them over onto a bundle which can then be ejected from the machine periodically.
Inventors
- 👤 B Speer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:24
CPC Classifications
D; D05; D05B; D05B41/00; D05B35/00; D05B35/02; D05B65/00; D05D; D05D2207/00; D05D2207/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
95 words
A hemming machine, comprising; means to convey a piece of cloth past sewing means, progressive folding means adjacent said conveyor means adapted to double fold an edge of the cloth piece prior to sewing, said folding means including progressive elevating means to lift an edge portion of the cloth piece, progressive forming means overlying and parallel to said conveyor having a marginal edge extending angularly to the path of said conveyor under said elevating means to double fold and tuck a portion of the cloth piece under said elevated edge portion of said cloth piece.
Claim 2
Dependent Claim
95 words
A hemming machine, comprising; means to convey a piece of cloth past sewing means, progressive folding means adjacent said conveyor means adapted to double fold an edge of the cloth piece prior to sewing, said folding means including progressive elevating means to lift an edge portion of the cloth piece, progressive forming means overlying and parallel to said conveyor having a marginal edge extending angularly to the path of said conveyor under said elevating means to double fold and tuck a portion of the cloth piece under said elevated edge portion of said cloth piece.
Claim 3
Dependent Claim
47 words
The hemming machine of claim 1 wherein said elevating means comprises a lift plate extending partially over and generally upwardly, along and parallel to said conveyor means and said forming means comprises a form plate located above said conveyor means and extending progressively under said lift plate.
Claim 4
Dependent Claim
28 words
The hemming machine of claim 1 wherein said conveyor means comprise at least two conveyors adapted to stretch the piece of cloth extending therebetween and thereby remove wrinkles.
Claim 5
Dependent Claim
43 words
The hemming machine of claim 1 wherein said conveyor means include at least two conveyors located in series, the second conveyor moving at a linear rate slightly in excess of the first conveyor to thereby stretch the piece of cloth and remove wrinkles.
Claim 6
Dependent Claim
23 words
The hemming machine of claim 1 including unloading means adjacent said conveyor means and adapted to remove cloth pieces from the conveyor means.
Claim 7
Dependent Claim
25 words
The hemming machine of claim 5 wherein said unloading means include means to engage individual pieces of cloth and pull them from the conveyor means.
Claim 8
Dependent Claim
27 words
The hemming machine of claim 5 wherein stacking means are located adjacent said unloading means and adapted to receive and stack the cloth pieces into a bundle.
Claim 9
Dependent Claim
32 words
The hemming machine of claim 7 wherein said stacking means include means to over turn each cloth piece onto the bundle and means to periodically unload each bundle from the stacking means.
Claim 10
Dependent Claim
26 words
The hemming machine of claim 7 wherein said stacking means include automatic means to sense the receipt of a cloth piece and actuate the stacking means.
Claim 11
Dependent Claim
26 words
The hemming machine of claim 5 wherein said unloading means include automatic means to sense the passage of a cloth piece and actuate the unloading 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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |