Sewing head driving apparatus for a sewing machine

Details Sewing head driving apparatus for a sewing machine Sewing head driving apparatus for a sewing machine

1995-04-12

1996-07-30

Izaguirre, Ismael

Sewing

Special machines

Traveling sewing machine

112259, D05B 6902, D05B 6930

Patent

active

055401651

ABSTRACT:
The invention is directed to a sewing head driving apparatus for a sewing machine which has a table, a lower rotary shaft provided horizontally below a table, a sewing head provided above the table in spaced relationship therewith, an upper rotary shaft provided horizontally in the sewing head, a transmission mechanism for transmitting a rotational force to rotate the upper rotary shaft and the lower rotary shaft in synchronous relationship with each other, and a needle driving device for reciprocating a needle vertically in accordance with rotation of the upper rotary shaft. In the sewing head driving apparatus, a parallel motion device is provided to support the sewing head movably on a horizontal plane above the table, and move the sewing head between an initial position and a position horizontally apart from the initial position to provide an open area above the table at the initial position, and a synchronous relationship maintaining mechanism is provided to maintain the synchronous relationship between the upper rotary shaft and the lower rotary shaft, independent from the motion of the sewing head by the parallel motion device.

REFERENCES:
patent: 320849 (1885-06-01), Chase
patent: 361426 (1887-04-01), Looker
patent: 3595188 (1971-07-01), Schmedding et al.
patent: 4333410 (1982-06-01), Taketomi
patent: 5003895 (1991-04-01), Talanker
patent: 5287820 (1994-02-01), Stutznacker
patent: 5322027 (1994-06-01), Hashiride et al.

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