Cylinder bed compound feed heavy duty sewing machine is designed with sliding lever thread taken-up, vertical rotating hook to produce double lockstitch, gear band for driving arm shaft and hook shaft, lever type stitch regulator, compound feed by presser foot, feed dog and needle, with high presser foot life, large stitch length and cylinder bed, it is easy for sewing morelays leather, and install clutch safe-device to prevent the damage. It's widely sewing heavy-duty luggage suitcase, seat cushion, especially for edgeseaming on luggage bags.