This machine adopts two straight needles,vertical-axis rotating hook with self-lubricating feature for catching thread loops and sliding cam take-up to produce two lines of double lock stitch.The needle bar canbe engaged and disengaged mechanically and the arm shaft and hook shaft are supported by ball bearings.It is provided with synchronous tooth belt for driving and plunger pump for lubricating,and knob-type stitch regulator and lever type reverse feeding mechanism.A bobbin thread pullback spring in the bobbin case guarantees the unanimous result of wewing between the bottom fhread and upper thread.It is suitable for stitching shirt,uniform,jeans,overcoat or similar clothing.
