Sewing – Special machines – Embroidering
Patent
1993-10-20
1995-08-08
Nerbun, Peter
Sewing
Special machines
Embroidering
112103, 11247004, 11247006, D05B 2100, D05C 906
Patent
active
054389429
ABSTRACT:
Disclosed herein is a turning zigzag embroidery machine adapted to read in from outside needle center data N, which permits scaling up or down or alteration of an embroidery pattern, and to convert the needle center data into frame center data C to reproduce an embroidery pattern in an improved form. Of externally read-in needle center data N (.DELTA.X, .DELTA.Y, .theta., W) and the data of needle center N on X-Y axes, this turning zigzag embroidery machine transforms, for example, data Nk (Xk, Yk, .theta.k, Wk) of needle center Nk into data Ck (xk, yk, .theta.k, Wk) of frame center Ck on x-y axes by arithmetic conversion. Then, in order to advance an embroidering needle 10 to the needle center Nk, a rotatable frame is shifted in the directions of x- and y-axes and at the same time it is turned through a given rotational angle .theta.=.theta.k in the direction of arrow E. At each of the advanced needle center positions, the embroidering needle is imparted with a rocking motion across a rocking width Wk to make a stitch at a given stitch point Sk, thereby reproducing an embroidery pattern on a cloth.
REFERENCES:
patent: 4598655 (1986-07-01), Takenoya
patent: 4841891 (1989-06-01), Hashimoto et al.
patent: 5255198 (1993-10-01), Yokoe et al.
patent: 5282142 (1994-01-01), Asano
Isobe Takashi
Ito Keiichi
Okuno Akira
Nerbun Peter
Nippon Denpa Co., Ltd.
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