Bobbin low detector

Details Bobbin low detector Bobbin low detector

1975-09-03

1977-08-09

Hunter, H. Hampton

Sewing

Elements

Starting or stopping

200 6116, 242 36, B65H 6302

Patent

active

040403670

ABSTRACT:
A device for use with a sewing machine using bobbins to determine either when a predetermined amount of bobbin thread remains on the bobbin or, alternatively, when the bobbin is completely empty. The device employs a probe which is inserted into the bobbin when the sewing machine is not operating and will thereafter produce a signal if the bobbin is low on thread or empty.

REFERENCES:
patent: 2647482 (1953-08-01), Campbell
patent: 2843688 (1958-07-01), Masem
patent: 2910555 (1959-10-01), Tunstall
patent: 3413794 (1968-12-01), Bell et al.
patent: 3601073 (1971-08-01), Simpson

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