US4227472A
Expired / Lapsed
US
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Sewing machine with electronic pattern data circuits
Assignee: Husqvarna AB
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Filing: 1978-03-28
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Granted: 1980-10-14
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Expires: 1998-03-28
Abstract
Abstract Disclosed is an improvement in sewing machines wherein data circuits generate signals which are converted into movement of the stitch forming elements in predetermined patterns. In this improvement, computer algorithms are utilized to derive the signals which move the stitch forming elements. The parameters for these computer algorithms are stored in a number of blocks and in response to appropriate pattern select devices, the desired algorithm and desired parameters for the algorithm are selected which correspond to a desired stitch pattern.
Inventors
- 👤 Bengt A. Bergvall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:55
CPC Classifications
D; D05; D05B; D05B19/00; D05B19/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
157 words
In a sewing machine with electronic pattern data circuits for the generation of data signals, at least one motion converter means for producing, as a function of said signals, movements of the stitch forming elements of the machine, said movements generally comprising a sideways and vertically moving needle operating in conjunction with a fabric feeder and shuttle, an improvement wherein said data circuits comprise: pattern select means for permitting a sewing machine operator to select a desired stitch pattern; storage unit means for storing algorithm parameters and in response to said pattern select means, providing said parameters to an output; stitch counter means for providing stitch count signals; and algorithm computer means, responsive to said output of said storage unit means and said pattern select means, for computing coordinates of a necessary point of needle penetration and providing signals to said motion converter means to orient said needle in accordance with the desired stitch in the pattern.
Claim 2
Dependent Claim
157 words
In a sewing machine with electronic pattern data circuits for the generation of data signals, at least one motion converter means for producing, as a function of said signals, movements of the stitch forming elements of the machine, said movements generally comprising a sideways and vertically moving needle operating in conjunction with a fabric feeder and shuttle, an improvement wherein said data circuits comprise: pattern select means for permitting a sewing machine operator to select a desired stitch pattern; storage unit means for storing algorithm parameters and in response to said pattern select means, providing said parameters to an output; stitch counter means for providing stitch count signals; and algorithm computer means, responsive to said output of said storage unit means and said pattern select means, for computing coordinates of a necessary point of needle penetration and providing signals to said motion converter means to orient said needle in accordance with the desired stitch in the pattern.
Claim 3
Dependent Claim
51 words
The improvement according to claim 1, wherein said algorithm computer means includes means responsive to said output of said stitch counter means for providing signals in accordance with a first algorithm for odd numbered stitches and for providing signals computed in accordance with a second algorithm for all even numbered stitches.
Claim 4
Dependent Claim
23 words
Improvement of claim 1 wherein said pattern select means includes means for successively selecting different algorithms for the execution of a desired pattern.
Claim 5
Dependent Claim
32 words
The improvement of claim 1 wherein said algorithm computer means includes means responsive to said stitch counter means for repeating a desired pattern after a predetermined number of stitches has been counted.
Claim 6
Dependent Claim
33 words
The improvements of claim 3 wherein said pattern select means includes means responsive to said stitch counter for changing the algorithm utilized in producing a stitch pattern after a predetermined number of stitches.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |