Sewing – Elements – Driving mechanisms
Patent
1995-07-10
1996-09-17
Izaguirre, Ismael
Sewing
Elements
Driving mechanisms
D05B 6912
Patent
active
055558291
ABSTRACT:
The invention is directed to a driving apparatus for a sewing machine which has a table, an upper rotary shaft provided horizontally above the table for driving a needle, a lower rotary shaft provided horizontally below the table for driving a shuttle, 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 driving device for rotating the upper rotary shaft and the lower rotary shaft. The transmission mechanism includes a first toothed pulley which is mounted on the upper rotary shaft and rotated together therewith, a second toothed pulley which is mounted on the lower rotary shaft and rotated together therewith, and a double toothed belt on both sides of which is provided with teeth for meshing with the first toothed pulley and the second toothed pulley, respectively. The belt is held to be meshed with the first toothed pulley at one side of the belt, and held to be meshed with the second toothed pulley at the other side of the belt.
REFERENCES:
patent: 376975 (1888-01-01), Adie
patent: 2793600 (1957-05-01), Francois
patent: 2964001 (1960-12-01), Walling et al.
patent: 3602167 (1971-08-01), Papajewski
patent: 4276039 (1981-06-01), Takano
patent: 5273496 (1993-12-01), White, Jr.
patent: 5322027 (1994-06-01), Hashiride et al.
Aisin Seiki Kabushiki Kaisha
Izaguirre Ismael
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