Thread cutter

Details Thread cutter Thread cutter

1976-12-20

1978-08-22

Hunter, H. Hampton

Sewing

Elements

Thread cutting, severing or breaking

112295, 112299, 30138, 30296R, 83174, D05B 6500

Patent

active

041080980

ABSTRACT:
A thread-cutting assembly for use with a sewing machine that always presents a sharp cutting edge for thread cutting. The assembly includes a circular cutting disk having a circumferential cutting edge, and a guard plate for preventing access to the majority of the circumferential cutting edge of the disk but exposing a portion of the disk circumferential cutting edge. The disk is mounted to the guard plate so that the disk rotates with respect to the guard means about an axis when thread to be cut by the disk is brought into engagement with the exposed portion of the disk so that a new cutting surface is exposed, and the guard plate is operatively mounted to a sewing machine. The guard plate also sharpens the cutting edge of the disk upon rotation of the disk with respect to the guard plate, the guard plate being formed of metal having a greater temper than the metal of the disk.

REFERENCES:
patent: 138412 (1873-04-01), Leslie
patent: 1124800 (1915-01-01), Potts et al.
patent: 1312659 (1919-08-01), Wilson
patent: 1559724 (1925-11-01), Meader et al.
patent: 3821915 (1974-07-01), Larrable

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