Thread control for buttonhole sewing machine

Details Thread control for buttonhole sewing machine Thread control for buttonhole sewing machine

1979-10-29

1980-10-21

Hunter, H. Hampton

Sewing

Special machines

Buttonhole

112281, 112253, D05B 300, D05B 5300

Patent

active

042287480

ABSTRACT:
A system for controlling the starting end of a thread is disclosed in which air is provided via a conduit and nozzle to a point adjacent the needle and above the presser foot of the sewing machine. The arrangement is such that the air is controlled by a valve whose operation is in turn controlled by the position of the presser foot so that air is supplied only when the presser foot is raised and the sewing machine is in a stopped position.

REFERENCES:
patent: 2650557 (1953-09-01), Hauser
patent: 2988031 (1961-06-01), Reid
patent: 3371632 (1968-03-01), Snyder et al.
patent: 3568615 (1971-03-01), Strettow
patent: 3721204 (1973-03-01), Schaffer et al.

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