Sewing – Special machines – Pattern controlled or programmed
Patent
1997-03-07
1998-07-28
Nerbun, Peter
Sewing
Special machines
Pattern controlled or programmed
112182, 112220, 112260, 112277, 112300, D05B 5736, D05B 6924, D05B 6502, D05B 1912
Patent
active
057849900
ABSTRACT:
An embroidery machine having a plurality of beds and corresponding heads. In each of the heads, a plurality of needle bars supporting needles and thread take up levers are provided. Each bed contains a rotary hook drive motor provided independent of a sewing machine motor which drives a spindle extending through the heads. The rotary hook drive motor is driven in synchronization with the spindle for performing embroidery stitching, but is driven independently of the spindle at a specific rotation angle range thereof based on number of stitching. In each bed, a conventional needle thread holding mechanism is dispensed with. By controlling rotation of the rotary hook drive motor, a residual end part of the needle thread has a sufficient length capable of avoiding disengagement of the residual end part from an eyelet of the needle at a thread cutting operation.
REFERENCES:
patent: 3066627 (1962-12-01), Schlosser et al.
patent: 4658752 (1987-04-01), Keilmann et al.
patent: 5050513 (1991-09-01), Frankel
patent: 5189971 (1993-03-01), Frankel et al.
patent: 5458075 (1995-10-01), Tice et al.
patent: 5660129 (1997-08-01), Murata et al.
Morita Tetsuo
Shimizu Masaki
Takahashi Akio
Brother Kogyo Kabushiki Kaisha
Nerbun Peter
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