Sewing – With tables or stands – For plural sewing units
Patent
1975-05-21
1976-08-31
Schroeder, Werner H.
Sewing
With tables or stands
For plural sewing units
112158E, 11212111, D05B 2700, D05B 302
Patent
active
039773388
ABSTRACT:
A sewing machine is disclosed in which the pattern of successive needle penetrations during stitching is influenced in accordance with pattern information stored within the machine in a static memory. This pattern information is retrieved and utilized electronically to control, among other factors, the magnitude and direction of feed of the work fabric being stitched. Manually operable electric feed reversing switch means is provided which is effective, while it remains closed, to interrupt utilization of this pattern information to the stitch forming instrumentalities both as to needle bight and work feed motion and to substitute in its place information from auxiliary static memory for use electronically to influence uniform work feed in a reverse direction with the needle maintained in one predetermined lateral position. Provision is also made upon each reopening of the feed reversing switch for reinstating the beginning of that particular pattern of stitches which had been interrupted regardless of where during the course of sewing that stitch pattern the feed reversing switch may have been closed.
REFERENCES:
patent: 3005136 (1961-10-01), Fluckiger
patent: 3654882 (1972-04-01), Kamena
patent: 3752098 (1973-08-01), Logan
patent: 3872808 (1975-05-01), Wurst
patent: 3889105 (1975-06-01), Schneekloth
Garron Stephen A.
Wurst John W.
Bell Edward L.
Falk Julian
Nerbun Peter
Schroeder Werner H.
Smith Robert E.
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