Sewing – Elements – Take-ups
Patent
1983-05-02
1984-04-24
Hunter, H. Hampton
Sewing
Elements
Take-ups
112163, 112221, D05B 4900
Patent
active
044441380
ABSTRACT:
A sewing machine provided with three selectively operable needle bars and a take-up lever mounted for vertical oscillating movement is provided with a selectively operatable thread clamping device for selectively clamping any two of the three threads associated with the respective needle bars in a stationary position while permitting the third thread to follow the oscillating movement of the take-up lever during reciprocation of the selected needle bar. The thread clamping device is comprised of two flexible plates disposed between two stationary plates secured to the sewing machine arm. The four plates are provided with vertically aligned slots to accomodate the oscillating movement of the take-up lever. A moveable plate having cam surfaces thereon is mounted for reciprocating movement on the sewing machine arm with the cam surfaces operably engageable with the upper ends of the two flexible plates for selectively clamping any two of the three threads passing through the respective passages between the plates.
REFERENCES:
patent: 1266036 (1918-05-01), Molyneux
patent: 1397507 (1921-11-01), Gatchell
patent: 2556068 (1951-06-01), Crawford
patent: 2832301 (1958-04-01), Wear
patent: 4075958 (1978-02-01), Sacchetti
patent: 4295433 (1981-10-01), Desprez et al.
Aisin Seiki Kabushiki Kaisha
Hunter H. Hampton
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