US3869998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewing device
Assignee: Kochs Adler AG
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Filing: 1973-05-10
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Granted: 1975-03-11
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Expires: 1993-05-10
Abstract
Abstract Means for use in template-controlled sewing devices in which a magnetic roller rolls along the peripheral edge of the template, for preventing a recoil of the roller out of the internal corner of the template when said roller reaches the corner with a proportional high speed. The means consist of a supporting body which carries the workpiece clamping means and the template and which rests on the support means slidable in a horizontal plane and under the own weight. Furthermore, there are provided adjustable shock absorbers and means for returning the supporting body into a predetermined normal position after terminating a sewing cycle.
Inventors
- 👤 Hans Scholl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:28
CPC Classifications
D; D05; D05B; D05B35/00; D05B35/10; D05D; D05D2207/00; D05D2207/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
224 words
In a sewing device with guided control of a sewing cycle, comprising a support means, a link arm, means swingably attaching said link arm to said support means, a supporting arm, a connecting arm pivoted on said link arm and said supporting arm, a template having internal corners, workpiece clamping means above said template, a driven magnetic roller engaged with the peripheral edge of said template, means attaching said magnetic roller on said supporting arm, a sewing machine carried by said supporting arm and having a vertically reciprocating needle coaxially with the said magnetic roller, and a supporting body carrying said workpiece clamping means and said template, shock absorbing means between said supporting body and said supporting means for limiting said supporting body to slide with respect to said support means when said template receives a relatively high shock by having said magnetic roller slam into an internal corner, said shock-absorbing means comprising an upper thrust washer having a bore, a lower thrust washer provided with a threaded sleeve for receiving said upper thrust washer, a spring for pressing said thrust washers against said supporting body, a bolt secured to said support means for slidably receiving said threaded sleeve, regulating nuts on said bolts for adjusting the tension of said spring and a recess formed in said supporting body for receiving said threaded sleeve.
Claim 2
Dependent Claim
224 words
In a sewing device with guided control of a sewing cycle, comprising a support means, a link arm, means swingably attaching said link arm to said support means, a supporting arm, a connecting arm pivoted on said link arm and said supporting arm, a template having internal corners, workpiece clamping means above said template, a driven magnetic roller engaged with the peripheral edge of said template, means attaching said magnetic roller on said supporting arm, a sewing machine carried by said supporting arm and having a vertically reciprocating needle coaxially with the said magnetic roller, and a supporting body carrying said workpiece clamping means and said template, shock absorbing means between said supporting body and said supporting means for limiting said supporting body to slide with respect to said support means when said template receives a relatively high shock by having said magnetic roller slam into an internal corner, said shock-absorbing means comprising an upper thrust washer having a bore, a lower thrust washer provided with a threaded sleeve for receiving said upper thrust washer, a spring for pressing said thrust washers against said supporting body, a bolt secured to said support means for slidably receiving said threaded sleeve, regulating nuts on said bolts for adjusting the tension of said spring and a recess formed in said supporting body for receiving said threaded sleeve.
Claim 3
Dependent Claim
224 words
In a sewing device with guided control of a sewing cycle, comprising a support means, a link arm, means swingably attaching said link arm to said support means, a supporting arm, a connecting arm pivoted on said link arm and said supporting arm, a template having internal corners, workpiece clamping means above said template, a driven magnetic roller engaged with the peripheral edge of said template, means attaching said magnetic roller on said supporting arm, a sewing machine carried by said supporting arm and having a vertically reciprocating needle coaxially with the said magnetic roller, and a supporting body carrying said workpiece clamping means and said template, shock absorbing means between said supporting body and said supporting means for limiting said supporting body to slide with respect to said support means when said template receives a relatively high shock by having said magnetic roller slam into an internal corner, said shock-absorbing means comprising an upper thrust washer having a bore, a lower thrust washer provided with a threaded sleeve for receiving said upper thrust washer, a spring for pressing said thrust washers against said supporting body, a bolt secured to said support means for slidably receiving said threaded sleeve, regulating nuts on said bolts for adjusting the tension of said spring and a recess formed in said supporting body for receiving said threaded sleeve.
Claim 4
Dependent Claim
224 words
In a sewing device with guided control of a sewing cycle, comprising a support means, a link arm, means swingably attaching said link arm to said support means, a supporting arm, a connecting arm pivoted on said link arm and said supporting arm, a template having internal corners, workpiece clamping means above said template, a driven magnetic roller engaged with the peripheral edge of said template, means attaching said magnetic roller on said supporting arm, a sewing machine carried by said supporting arm and having a vertically reciprocating needle coaxially with the said magnetic roller, and a supporting body carrying said workpiece clamping means and said template, shock absorbing means between said supporting body and said supporting means for limiting said supporting body to slide with respect to said support means when said template receives a relatively high shock by having said magnetic roller slam into an internal corner, said shock-absorbing means comprising an upper thrust washer having a bore, a lower thrust washer provided with a threaded sleeve for receiving said upper thrust washer, a spring for pressing said thrust washers against said supporting body, a bolt secured to said support means for slidably receiving said threaded sleeve, regulating nuts on said bolts for adjusting the tension of said spring and a recess formed in said supporting body for receiving said threaded sleeve.
Claim 5
Dependent Claim
30 words
A device as claimed in claim 1, further comprising means for returning said supporting body displaced by said high shock into a predetermined normal position after terminating a sewing cycle.
Claim 6
Dependent Claim
69 words
A device as claimed in claim 2, wherein each of said means for returning said supporting body comprises an air cylinder having a piston rod and fastened to said support means, a cone shaped recess formed in said supporting body and surrounding said piston rod, and a cone shaped centering device fastened to said piston rod and cooperating with said cone sahped recess when said air cylinder is charged.
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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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |