Shifting needle carpet mender

摘要

A hand-held mending gun for tufting stitches into a backing material has a hollow needle reciprocably driven axially and oscillated laterally so as to form stitches in a backing material laterally offset from other stitches. Zig-zag backstitches may thus be formed as may other laterally offset stitches. A crank drives a needle carrier in a reciprocating path extending longitudinally along the axis of the needle. The elongated path is defined by constraining the needle carrier to move within a slot in a pivotally mounted yoke member having a pair of spaced apart tines disposed about a cam so that rotation of the cam oscillates the yoke member about the pivot. The cam is driven by gears such that it may make one cycle For each two cycles of reciprocation of the needle to form alternate laterally offset stitches. Cams of various configurations may be utilized so that more than one stitch may be provided at each lateral side.