SEWING-MACHINE Russian patent published in 2003 - IPC

FIELD: sewing-machines with disk pulleys. SUBSTANCE: proposed sewing-machine has curvilinear slot 13 of disk 11 made in form of circle whose center is shifted relative to center of disk; pin 15 is received by slot of balls 14 and is secured on axle mounted in bushes 18 of body 1 for performing turn in parallel relative to axis of needle guide 6. Toothed sector 19 is mounted on the same axle for engagement with gear fitted in bush of body 1 in parallel relative to needle guide 6. Adjustable stretcher 22 is secured on other end of axle. Second loop-forming member is secured on upper end of looper axle mounted rotatably at angle of 20 deg. relative to vertical. Secured on lower end of axle is terminal with spherical bearing whose outer race is connected with outer race 32 of other bearing. Inner spherical eccentric 33 of bearing is secured on main shaft 12; provision is made for adjustment of its position. EFFECT: improved quality of edge-felling two-thread chain stitch, type 502 for sewing gloves. 6 dwg