| 摘要 |
FIELD: domestic sewing machines. SUBSTANCE: zigzag-type sewing machine has needle carrier frame rocking shaft and spherical bushing for reciprocating of needle carrier, which are mounted on immovable upper strip. Detachable lower strip is made in the form of detachable bearing equipped with spherical bushing rigidly fixed therein and is attached to frame body. Frame is formed as plate made integral with rocking lever. Frame rocking shaft is provided with additional support, on which upper thread tightening regulator is mounted. EFFECT: simplified construction and reduced labor intensity for manufacture of zigzag-type sewing machine. 6 cl, 5 dwg |
