Arrangement in a sewing machine

Details Arrangement in a sewing machine Arrangement in a sewing machine

1986-10-03

1988-06-07

Reynolds, Wm. Carter

Sewing

Elements

Driving mechanisms

112221, 112443, D05B 6902

Patent

active

047489170

ABSTRACT:
A sewing machine in which the bed shaft and the arm shaft have been replaced by a synchronous belt and the plane of rotation of the synchronous belt is perpendicular to the cloth feeding direction. All function units which drive or are driven by the synchronous belt and the belt itself are mounted on the same side of the sewing machine body. A number of backing rollers guide the synchronous belt in the plane of rotation. These backing rollers are on shafts which are either stationary or driving. The shafts are supported by the sewing machine body in rotation or stationary manners. The backing rollers can be smooth or toothed wheels which drive or are driven by the synchronous belt. Some toothed wheels can drive several function units of the sewing machine. By changing the diameter of the toothed wheels in relation to each other the time relation between the several function units of the sewing machine can be controlled. The driving motor can be connected to one of these toothed wheels directly, driving the several function units via the synchronous belt without intervening primary transmission.

REFERENCES:
patent: 2559438 (1951-07-01), Jocsak et al.
patent: 2760457 (1956-08-01), Rabezzank
patent: 2793600 (1957-05-01), Francois
patent: 2828708 (1958-04-01), Ayres
patent: 4503793 (1985-03-01), Odermann
patent: 4512273 (1985-04-01), Skogward
patent: 4641593 (1987-02-01), Echavarrio

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