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采用了梭軸配合補償機構，旋梭在勾線時的左右位置均等，可防止
跳線以及斷線。對與有伸縮性的布料，裝備了微量的抬壓腳裝置就
會使壓腳輕輕浮起，然后進行縫紉，縫出的線跡整潔美觀。
JR2284N一臺機可實現(xiàn)直縫、2點曲折縫、4點曲折縫 
JR2288N通過更換凸輪進行11種的花樣縫。

The machine is equipped with a hook-driving shaft-offset
mechanism which places the hook-rotating shaft off-center from
the center of Zigzag stroke of the needle. This machanism allows
the blade point of the hook to catch the needle thread every time
regardless of the needle throwing direction. As a rusult, the machine
is immune to sewing troubles, such as stitch skiping and thread
breakage.
JR2284N Its Can be used for lockstitch, Zigzag stitch, two point
ａnd four point Zigzag stitch;
JR2288N Its according to the differnt shaft-offset mechanism,
you will have more than 11 kinds patterns.