Machine for automatically changing lower-thread bobbins
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United States of America Patent
Stats
-
May 31, 1994
Issued Date -
N/A
app pub date -
May 25, 1993
filing date -
Jun 22, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
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Abstract
An automatic bobbin-winding machine, in particular for lockstitch machines, comprises a changing head (27) with pneumatically driven gripping levers (30,31) for removing the lower part (35) of the bobbin case holder from the sewing machine. The changing head (27) can pivot or oscillate about various axes (39,40,41) and move on a carriage (26). It cooperates with a magazine (22) arranged alongside the axis (39). A second changing head (27') which can pick up empty and full bobbins (2) alternately may also be arranged on the carriage (26).
First Claim
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