Brother HE-800A - Thread Breakage Detection Mechanism ･･････････7

1. MECHANICAL DESCRIPTIONS
HE-800A
7
1-7. Thread breakage detection mechanism
1. The cutter bar fixed plate assembly (1) and the thread guide (2) are secure to the thread breakage perceiving
shaft (3). When a thread breakage occurs, the cutter bar fixed plate assembly (1) drop by its own weight and
moves the thread guide (2) in the direction of the arrow.
2. When the sensor (4) detects the cutter bar fixed plate assembly (1), the sewing machine stops and the cutter is
prevented from dropping.
4053Q