Back to results
US 4,901,659 AGranted
Pattern-matching sewing machine
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsEtsuzo Nomura, Hirokazu Takeuchi, Shigeru Suzuki, Kazunori Irie, Hirosumi Itoh
Life of this patent
Estimating the term…
Abstract
A pattern-matching sewing machine for sewing two sheets, (e.g. two cloths) having the same patterns with their patterns matching. The sewing machine has a plurality of mismatch calculation modes. The operator selects one of the calculation modes appropriate to the type or characteristics of the pattern to be sewn and the mismatch distance is calculated according to the selected mode.
Claims14
A sewing machine for sewing two sheets having the same pattern comprising:
- first and second feeding means, each for intermittently feeding one of the sheets;
- first and second photo-sensing means, each for optically sensing the pattern on one of the sheets during feeding and for generating photo-intensity data;
- a plurality of mismatch detecting means, each for calculating a mismatch distance of the patterns on the two sheets using an algorithm different from that of another mismatch detecting means;
- a mode selecting means for selecting one of the plurality of mismatch detecting means according to characteristics of the pattern on the two sheets;
- and
- a feed-adjusting means that uses the mismatch distance calculated by the selected mismatch detecting means, for adjusting one of the feeding means to match the patterns.
3 more elements
A sewing machine for sewing two sheets having a same pattern comprising:
- first and second feeding means, each for intermittently feeding one of the sheets;
- first and second photo-sensing means each for optically sensing the pattern on one of the sheets during feeding and for generating photo-intensity data of red, green and blue colors for a plurality of points on the sheet;
- a plurality of mismatch detecting means, each for calculating a mismatch distance of the patterns on the two sheets using an algorithm different from that of another mismatch detecting means;
- a mode selecting means for selecting one of the plurality of mismatch detecting means according to characteristics of the pattern n the two sheets;
- and
- a feed-adjusting means that uses the mismatch distance calculated by the selected mismatch detecting means, for adjusting one of the feeding means to match the patterns.
3 more elements
Dependencies are inferred from the claim text.