Bobbin case with thread guide for cyclic sewing machine

Details Bobbin case with thread guide for cyclic sewing machine Bobbin case with thread guide for cyclic sewing machine

1979-10-03

1981-06-30

Reynolds, Wm. Carter

Sewing

Elements

Revolving hooks

112231, D05B 5726

Patent

active

042756758

ABSTRACT:
A bobbin case for use in machines having underbed thread trimmers incorporates a thread guide consisting of a piano wire soldered to the cylindrical skirt of the case in the region between the leaf tension spring and the point at which the thread is cut by the trimming blade. A groove is formed under and partly through the wire and also partly through the cylindrical skirt. The groove is directed at an angle to the longitudinal direction of the skirt such as to place the groove in line with the direction of movement of the thread to facilitate smooth thread handling.

REFERENCES:
patent: 944740 (1909-12-01), Madison
patent: 1146406 (1915-07-01), Diehl et al.
patent: 2694373 (1954-11-01), Covert et al.
patent: 3486473 (1969-12-01), Ross
patent: 3762350 (1973-10-01), Starnes

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