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Abstract

A blind stitch sewing machine includes a straight needle, a driving mechanism which gives a linear reciprocating motion to the straight needle, a needle guide which prevents the straight needle from sliding on the surface of the work without sticking therein, and a work raising portion formed on a work raising member so that a raised part of the work is continuously raised until it is stuck with the pointed tip of the straight needle and, after the pointed tip of the straight needle has passed the work raising member, the work raising member is withdrawn from the path of the straight needle by a distance not less than the radius of the trunk of the straight needle. Also disclosed is a blind stitching method which comprises employing a straight needle, giving a linear reciprocating motion to the straight needle in a direction which is parallel to the plane in which the work spreads and which is orthogonal to the sewing direction, preventing the straight needle from sliding on the surface of the work without sticking therein, and actuating the work raising member such that, after the pointed tip of the straight needle has passed the work raising member, the work raising member is withdrawn from the path of the straight needle by a distance not less than the radius of the trunk of the straight needle.

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First Claim