Claims
- 1. An automatic sewing machine comprising a movable head including a cloth clamping member for clamping a piece of cloth to be sewed to said movable head and provided with a profile corresponding to a predetermined sewing pattern, a memory device including a plurality of addresses for storing data concerning said sewing pattern and rectangular coordinate data for working an opening corresponding to a working origin on a blank of the cloth clamping member, electric drive means controlled by an electric signal read out from said memory device for moving said movable head at a predetermined speed thereby sewing said piece of cloth accoring to said sewing pattern, a work tool mounted on said sewing machine, means for mounting said blank of the cloth clamping member on said movable head at a position to be worked by said working tool, a pin adapted to be inserted into said opening for determining the sewing operation starting point, and means for driving said electric drive means at a speed lower than said predetermined speed, thereby working said blank to have said profile.
- 2. The automatic sewing machine according to claim 1, wherein said addresses further store data for working said blank in a correlated relationship with said rectangular ccordinate data.
- 3. The automatic sewing machine according to claim 1 wherein said addresses further store data for working pin holes through said blank, said pin holes being adapted to receive pins for positioning a cloth on said cloth clamping member.
- 4. The automatic sewing machine according to claim 10 wherein said working tool forms a groove of said profile through said blank.
- 5. The automatic sewing machine according to claim 1 wherein said electric drive means comprises a pulse motor, and said sewing machine further comprises a source of pulse having a predetermined frequency, means responsive to said signal for supplying said pulse to said pulse motor, and means for supplying to said pulse motor a pulse having a frequency lower than said predetermined frequency when said blank is worked by said working tool.
Priority Claims (1)
Number |
Date |
Country |
Kind |
51-19619 |
Feb 1976 |
JPX |
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CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part application of our copending application Ser. No. 771,265, filed Feb. 23, 1977, now abandoned.
US Referenced Citations (5)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
771265 |
Feb 1977 |
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