THREE-THREAD HIGH-SPEED OVERLOCK SEWING MACHINE

Unique direct and double crooked form over-edging and over stitch. Auto-forcing-lubricatiing device. Suitable for vaious knitting and fabric. Adopting forcing-oil-back device can both lubricate needle bar and prevent leaking, which in normal easily leaks at high speed. A forcing-oil-back device is fixed on the needle bar, which can not only guarantee enough lubrication of the needle bar but also prevent oil leakage phenomenon of the needle bar.