1-11.Spreader Mechanism - Brother RH-981A Service Manual

1-11. Spreader mechanism
1. At the end of the spreader cam lever (2) which has the looper link support shaft (1) as the pivot of the rocking
motion, the spreader cam roller (3) makes contact with the circumference of the lower shaft cam (4), and the
spreader driving lever (5) is attached to the other end using the screw (6). The forked part of the spreader driving
lever (5) is fitted in the groove (8) of the spreader link shaft (7).
2. When the lower shaft cam (4) rotates in the direction of the arrow, the spreader cam lever (2) is rocked via the
spreader cam roller (3).
3. The spreader link shaft (7) moves up and down due to the motion of the spreader cam lever (2).
RH-981A
1. MECHANICAL DESCRIPTIONS
3691Q
8