Universal thread cutting device and complementary devices applic

Sewing – Elements – Thread cutting – severing or breaking

Patent

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Details

112294, 112300, 112301, 112254, D05B 6502

Patent

active

042022860

ABSTRACT:
A thread cutting device applicable to sewing machines includes elements connected to a support plate to be installed in the sewing machine at the position therein where the common sliding elements are to be located. The support plate has a screw which acts on a bridge element when the bridge element is pressed against the lower face of a panel of the machine. One of the elements of the thread cutting device has a generally Y-shaped configuration and is provided with an alternating lineal movement, either by means of manual, electro-pneumatic or electromagnetic operation, in directions parallel to that of the sewing of the machine. Such shaped element angularly operates a movable knife against a fixed knife in synchronized cooperation with a thread collecting hook which also has an angular displacement. The arrangement further includes a thread withdrawing device and a thread tension opening device.

REFERENCES:
patent: 1988460 (1935-01-01), Pikul
patent: 3354852 (1967-11-01), Kennedy et al.
patent: 3532065 (1970-10-01), Marjorio
patent: 3894502 (1975-07-01), Hager et al.
patent: 4077342 (1978-03-01), Steckenrider
patent: 4098208 (1978-07-01), Hedegaard

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