Sewing – Stitch forming – Feeding work material
Patent
1982-12-20
1984-07-31
Nerbun, Peter P.
Sewing
Stitch forming
Feeding work material
11212127, D05B 2710
Patent
active
044623267
ABSTRACT:
A device for feeding tape, elastic strips or the like in a sewing machine that functions in timed relation with the mechanism for advancing a workpiece during seaming. The device includes elements for sensing the machine's operating speed and the amount of workpiece advance during each revolution of the machine's main shaft. A control unit having a microprocessor is operatively connected to the sensing elements and is effective in controlling a motor associated with the feed rollers for the tapes etc. so that they are rotated by an amount governed by the control unit. A feed back response to the control unit provides the information on roller rotation so that a comparison can be made with information previously received whereby the control unit is capable of initiating a correction for possible differences that may exist when the actual rotational speed of the rollers is greater or less than that required for the desired manner of application of tape or elastic strips to a workpiece.
REFERENCES:
patent: 4147120 (1979-04-01), Adamski, Jr. et al.
patent: 4389951 (1983-06-01), Von Hagen
Garagiola Adelmo
Perego Giuseppe
Nerbun Peter P.
Rockwell-Rimoldi S.p.A.
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