Importance

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Abstract

A mattress edge sewing machine including a frame having a material supporting surface, a sewing station defined by a needle bar mounted in the frame for generally vertical reciprocatory movements along a fixed centerline, and a feeding mechanism for pulling material through the sewing station of the machine. The feeding mechanism includes upper and lower positively driven feed rollers which are continually biased into operable engagement with each other. The feed rollers are arranged less than 0.8625 inches, measured in the direction of material advancement, separates the centerline of the feed rollers from the centerline of the needle bar. The needle bar is moved in timed relation relative to the movements of the looper, and with the needle bar traversing a distance in a single vertical direction at a ratio greater than 3:1 relative to the distance in a single lateral direction traversed by the looper.

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First Claim