Brother S-710A - Page 18

4. MECHANICAL DESCRIPTIONS
SL-710A
11
3) Thread trimming complete stop
4) Thread trimmer safety device
When the movable knife does not return to its original position, the mechanism operates as shown in the illustration
below to move the movable knife to a position where it will not touch the needle.
1642M
1641M
(1) Thread trimmer lever
1 Spring
2 Thread trimmer leve
r
(3) Thread trimmer holde
r
3 Solenoid leve
r
<2> Forked shaf
t
4 Solenoid
plunger
(2) Thread trimmer
connecting rod
<1> Thread trimmer leve
r
(4) Movable knife
<3> Roller bloc
k
<4> Rolle
r
1 Thread trimmer cam
2 Return pin
3 Roller bloc
k
4 Forked shaft
5 Thread trimmer lever
6 Thread trimmer connecting rod
7 Thread trimmer holde
r
8 Movable knife