Sewing – Special machines – Embroidering
Patent
1986-12-23
1987-09-22
Hunter, H. Hampton
Sewing
Special machines
Embroidering
112 8008, D05C 1506
Patent
active
046947612
ABSTRACT:
A yarn cutting head for a tufting machine, including a discoid, rigid cutting plate having a central bore for the free passage therethrough of a first element of the machine, means for rigid attachment of the plate to a second element of the machine, and at least one cutting hole eccentrically located relative to the bore and substantially concentric with a yarn-feeding duct provided in the second member of the machine. The yarn cutting head further includes a revolving cutting knife made of a relatively thin, elastically flexible material, drivable by a motor of the tufting machine via a drive shaft and consisting of a hub portion provided with a hole for connection to the drive shaft, and an elongated cutting portion extending beyond the hub portion. The cutting portion is provided with a cutting edge outwardly extending with respect to the hole and means is provided for pressing at least part of the cutting portion against the cutting plate. The elastically flexible cutting knife is prebent in such a way that when upon assembly, the rear face of the hub portion is pressed against the cutting plate, the elongated cutting portion is pressed against the plate along a relatively narrow strip including the cutting edge.
REFERENCES:
patent: 3389667 (1968-06-01), Mueller
patent: 3968758 (1976-07-01), Scholz
patent: 4111136 (1978-09-01), Spanel et al.
patent: 4119047 (1978-10-01), Spanel et al.
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