Patent ID: 9657418
Date: 2017-05-23
CPC Classifications: D05B

Claim:
1. A needle drive assembly for a sewing machine comprising: a drive shaft rotatable about a drive shaft axis; a needle feed cam operably connected to the drive shaft and rotatable therewith; a needle drive race slidably connected to the needle feed cam via a cam pin secured to the needle feed cam and at least partially extending through the needle drive race; and a needle assembly affixed to the needle drive race including: wherein rotary motion of the drive shaft and needle feed cam about the drive shaft axis is translated into a needle path via the needle drive race, the needle path including a substantially vertical downstroke from a stroke peak to a stroke depth, a horizontal carry portion from the stroke depth, a substantially vertical upstroke from the needle plate, and a curvilinear or linear return portion to the stroke peak.