Patent US5200890A successfully refreshed from Google Patents.
Patent US3752097A successfully refreshed from Google Patents.
US3752097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric edge finishing machines
Assignee: USM Corp
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Filing: 1972-04-14
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Granted: 1973-08-14
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Expires: 1992-04-14
Abstract
Abstract Mechanism is provided for enabling an overedging or other edgetreating machines automatically to operate progressively about the periphery of successive flexible work pieces, especially those of fabric having margin configuration including portions of constant convex curvature. Several improvements and refinements relating, for instance and without limitation, to automatic corner turning, to marginal label securement in the course of each operating cycle, so called sewing-off near the end of the cycle, ''''kickout'''' of the work piece from the operating zone, and associated thread cutoff, all contribute towards increasing productivity and relieving burden on an operator to the extent that the operator may simultaneously attend more than one machine.
Inventors
- 👤 G Neiley
- 👤 O Pearson
- 👤 G Fuller
- 👤 W Langevin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:28
CPC Classifications
D; D05; D05B; D05B35/00; D05B35/10; D05B35/102; D05B3/00; D05B3/12; D05B3/20; D05B65/00; D05D; D05D2207/00; D05D2207/02; D05D2207/04; D05D2209/00; D05D2209/14; D05D2303/00; D05D2303/20; D05D2305/00; D05D2305/08; D05D2305/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
126 words
An automatic edge finishing machine for operating on sheet material comprising a work supporting bed, an operating tool, an edge gage on the bed ahead of the tool, means for rectilinearly feeding a work piece on the bed in marginal engagement with the gage and to and through the operating zone of the tool, means for turning a corner portion of the work including a turning center and swing finger for swinging the work piece, said corner turning means being rotatable about an axis and movable heightwise into and out of engagement with the work on the bed, and a corner sensing means responsive to the position of a marginal portion of the work ahead of the tool for controlling operating of the corner turning means.
Claim 2
Dependent Claim
126 words
An automatic edge finishing machine for operating on sheet material comprising a work supporting bed, an operating tool, an edge gage on the bed ahead of the tool, means for rectilinearly feeding a work piece on the bed in marginal engagement with the gage and to and through the operating zone of the tool, means for turning a corner portion of the work including a turning center and swing finger for swinging the work piece, said corner turning means being rotatable about an axis and movable heightwise into and out of engagement with the work on the bed, and a corner sensing means responsive to the position of a marginal portion of the work ahead of the tool for controlling operating of the corner turning means.
Claim 3
Dependent Claim
47 words
A machine as in claim 1 having mechanism connected to the edge gage and operable to retract it from its edge gaging position in response to actuation of the corner sensing means to avoid interference with the work as it is rotated by the corner turning means.
Claim 4
Dependent Claim
49 words
A machine as in claim 1 having said corner turning means continuously rotatable during operation of the tool, and a power means energizable by actuation of the sensor and connected to the corner turning means to move the turning center and swing finger simultaneously into engagement with the work.
Claim 5
Dependent Claim
64 words
A machine as in claim 1 having a work-spreading plate arcuately slotted to accommodate the swing finger, means mounting the plate for movement heightwise toward and from a predetermined operating position adjustably spaced relative to said bed, and mechanism responsive to operation of said finger a predetermined number of times to relatively separate the plate and bed preparatory to removal of the work therefrom.
Claim 6
Dependent Claim
44 words
A machine as in claim 4 wherein the edge finishing machine is an overedging stitcher, and a reciprocable knife is operative in response to operation of said swing finger a predetermined number of times to sever the thread connecting the work to the stitcher.
Claim 7
Dependent Claim
40 words
A machine as in claim 1 and further comprising mechanism for retracting said edge gage from its edge gaging position in the course of work corner turning to an out-of-the-way position in response to actuation by said corner sensing means.
Claim 8
Dependent Claim
75 words
A machine as in claim 1 wherein said tool is a reciprocable needle, said edge gage is comprised of two relatively movable portions normally aligned with the feed path of said rectilinear feed means, and mechanism for advancing one of said two gage portions from its edge gage position in response to operation of a corner counting mechanism to effect displacement of the work margin on the bed relative to the needle and hence sew-off.
Claim 9
Dependent Claim
97 words
A machine as in claim 1 and further comprising a work-spreading plate relatively spaceable above said bed to accommodate only a predetermined ply thickness of the work to be fed between the plate and the bed for progressive marginal contact with said edge gage, said work-spreading plate having a portion spaced from the operating path of the tool for receiving a lable to be attached thereby to the work, and mechanism cooperative with the work-spreading plate and frictionally engageable with a label on the pocket portion to advance the label into the operating zone of said tool.
Claim 10
Dependent Claim
50 words
A machine as in claim 1 further comprising a sew-off mechanism automatically responsive to the finishing of a predetermined number of corners of the work, and a thread cut-off means responsive to operation of the sew-off mechanism to free the work piece for removal from the bed and the tool.
Claim 11
Dependent Claim
144 words
In an overedging machine having stitch forming means, a bed, edge trimming means, and feed dog mechanism for rectilinearly advancing a work piece on the bed to and through the operating zone of the stitch forming and the trimming means, an edge gage movable on the bed from its gaging position, means for turning a work piece corner and engageable with the work on the bed, a corner sensing means for controlling the corner turning means and automatically operable after sensing a predetermined number of work piece corners for causing movement of the edge gage to effect sew-off, and work kickout mechanism including chain stitch thread severing means, the kickout mechanism being operable in response to actuation of the edge gage causing the sew-off whereby said thread is tensioned between the work piece and the stitch forming means for cutting by said severing means.
Claim 12
Dependent Claim
144 words
In an overedging machine having stitch forming means, a bed, edge trimming means, and feed dog mechanism for rectilinearly advancing a work piece on the bed to and through the operating zone of the stitch forming and the trimming means, an edge gage movable on the bed from its gaging position, means for turning a work piece corner and engageable with the work on the bed, a corner sensing means for controlling the corner turning means and automatically operable after sensing a predetermined number of work piece corners for causing movement of the edge gage to effect sew-off, and work kickout mechanism including chain stitch thread severing means, the kickout mechanism being operable in response to actuation of the edge gage causing the sew-off whereby said thread is tensioned between the work piece and the stitch forming means for cutting by said severing means.
Claim 13
Dependent Claim
49 words
A machine as in claim 10 further comprising a work-spreading plate mounted for relative heightwise movement with respect to the bed, and control means operatively connecting the corner sensing means to said plate for causing it to clamp the work on the bed during operation of said severing means.
Claim 14
Dependent Claim
122 words
In a sewing machine having a bed, stitch forming instrumentalities including a needle, and work feeding mechanism for advancing the margin of a work piece on the bed and through the operating zone of said instrumentalities, a work-spreading plate overlying the bed and having a projecting portion ahead of the needle and adjacent to an exposed portion of the work feeding mechanism, a label receiving pocket formed on the plate ahead of the needle for aligning a label with a work piece margin, corner turning mechanism for rotating a work piece portion, and mechanism responsive to operation of said corner turning mechanism for advancing a label from the pocket and partly onto the plate projection and partly onto the work feed mechanism.
Claim 15
Dependent Claim
122 words
In a sewing machine having a bed, stitch forming instrumentalities including a needle, and work feeding mechanism for advancing the margin of a work piece on the bed and through the operating zone of said instrumentalities, a work-spreading plate overlying the bed and having a projecting portion ahead of the needle and adjacent to an exposed portion of the work feeding mechanism, a label receiving pocket formed on the plate ahead of the needle for aligning a label with a work piece margin, corner turning mechanism for rotating a work piece portion, and mechanism responsive to operation of said corner turning mechanism for advancing a label from the pocket and partly onto the plate projection and partly onto the work feed mechanism.
Claim 16
Dependent Claim
149 words
Guidance mechanism for enabling an operating tool of a machine to operate progressively on the margins of flexible sheet material, said mechanism comprising a work supporting bed, work feeding mechanism, an edge gage ahead of the tool and against which the edge of a piece of sheet material on the bed can progressively abut, means for sensing change in edge contour of the sheet material ahead of the tool as the material is fed, and mechanism operable in response to actuation of the sensing means for causing rotation of the sheet material whereby the operating path of the tool thereon is of constant convex curvature, the sheet material rotating mechanism including a clamp engageable with the material at the center of the convex curvature while the sensing means senses change in edge contour of the material and a work engaging member rotatable simultaneously with the clamp about said center.
Claim 17
Dependent Claim
149 words
Guidance mechanism for enabling an operating tool of a machine to operate progressively on the margins of flexible sheet material, said mechanism comprising a work supporting bed, work feeding mechanism, an edge gage ahead of the tool and against which the edge of a piece of sheet material on the bed can progressively abut, means for sensing change in edge contour of the sheet material ahead of the tool as the material is fed, and mechanism operable in response to actuation of the sensing means for causing rotation of the sheet material whereby the operating path of the tool thereon is of constant convex curvature, the sheet material rotating mechanism including a clamp engageable with the material at the center of the convex curvature while the sensing means senses change in edge contour of the material and a work engaging member rotatable simultaneously with the clamp about said center.
Claim 18
Dependent Claim
63 words
Guidance mechanism as in claim 13 wherein the machine is an overedGer and the tool is a reciprocable needle, and further characterized by the provision of a combination work kickoff and thread severing mechanism operable automatically after said sensing means has been actuated a predetermined number of times to enable the sheet material to be freely removed from the needle and said bed.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |