Sewing – Special machines – Embroidering
Patent
1991-12-19
1992-10-27
Schroeder, Werner H.
Sewing
Special machines
Embroidering
112 8016, 112 8073, 112235, D05C 1526, D05B 2906
Patent
active
051580276
ABSTRACT:
Tufting apparatus for producing textile goods includes a plurality of hollow needles which are reciprocated vertically to penetrate a backing. Yarn is fed pneumatically through the needles and implanted into the backing, the backing being shifted transversely by an amount corresponding to the space between adjacent needles so as to implant a transverse row across the backing. A knife blade is associated with each needle and positioned on the opposite side of the backing from a presser foot. The knife blade engages a point forming flat angled surface of the needle, the angled surface being formed with an upwardly and inwardly extending slot which serves to capture and center yarn exiting the needle and provides a sharp edge which cooperates with the knife blade for cutting the yarn. The presser foot includes a conduit disposed for blowing air under pressure toward the needle penetration opening to blow the limb of yarn severed from the needle down into the backing so that not only is the backing prevented from lifting when the needle is withdrawn, but the air acts to prevent the backstitch from standing up above the backing by reducing excess yarn as a result of the slot in the needle.
REFERENCES:
patent: 1142082 (1915-06-01), Eichorn
patent: 2563916 (1951-08-01), Brussell
patent: 4328758 (1982-05-01), Souza et al.
patent: 4549496 (1985-10-01), Kile
patent: 4928610 (1990-05-01), Akutsv
patent: 4991523 (1991-02-01), Ingram
patent: 5080028 (1992-01-01), Ingram
Lewis Paul C.
Ruderman Alan
Schroeder Werner H.
Tapistron International, Inc.
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