THREAD TAKE-UP LEVER SWITCHING MECHANISM AND SEWING MACHINE

THREAD TAKE-UP LEVER SWITCHING MECHANISM AND SEWING MACHINE

A thread take-up lever switching mechanism can switch the operation of a thread take-up lever which is interlocked with an upper shaft. The thread take-up lever switching mechanism includes: a cylindrical cam provided on the upper shaft, the cylindrical cam having a plurality of cam surfaces; a cont...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: AZUMA, Toyohiro, YOKOYAMA, Ushio
Format: Patent
Sprache:eng
Schlagworte:
EMBROIDERING
SEWING
TEXTILES
TUFTING
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Beschreibung
Zusammenfassung:A thread take-up lever switching mechanism can switch the operation of a thread take-up lever which is interlocked with an upper shaft. The thread take-up lever switching mechanism includes: a cylindrical cam provided on the upper shaft, the cylindrical cam having a plurality of cam surfaces; a contact portion provided on the thread take-up lever, the contact portion contacting a first surface of the plurality of cam surfaces; and a switch for switching the contact portion from a first position of contacting the first surface of the plurality of cam surfaces to a second position of contacting a second surface of the plurality of cam surfaces.