SEWING MACHINES

A sewing machine has two stepping drive motors(36,37) connected to the work clamp by a linkage. The operation of the motors is linked to the reciprocating needle in a timed manner. A programmed control signal is provided for the motors to give signals based on digitised co-ordinate axis valves for e...

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Bibliographic Details
Main Authors DOROSZ ADOLPH S, WELCHER RAY E, LEMAY ROGER E
Format Patent
LanguageEnglish
Published 15.03.1982
Subjects
EMBROIDERING
SEWING
TEXTILES
TUFTING
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Summary:A sewing machine has two stepping drive motors(36,37) connected to the work clamp by a linkage. The operation of the motors is linked to the reciprocating needle in a timed manner. A programmed control signal is provided for the motors to give signals based on digitised co-ordinate axis valves for each stitch, but modified to compensate for the non-linearily caused by the fixed relationship of the motors and their linkage to the work clamp. The design reduces restrictions on the stitching density & allows stitching patterns to be charged quickly with little loss of prodn. charge by plugging a new program into the control circuit.
Bibliography:Application Number: KR19750002660