采用了梭轴配合补偿机构，旋梭在勾线时的左右位置均等，可防止
跳线以及断线。对与有伸缩性的布料，装备了微量的抬压脚装置就
会使压脚轻轻浮起，然后进行缝纫，缝出的线迹整洁美观。
JR2284N一台机可实现直缝、2点曲折缝、4点曲折缝 
JR2288N通过更换凸轮进行11种的花样缝。

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.