NEEDLE THREAD TENSION REGULATOR OF SEWING MACHINE Russian patent published in 1999 - IPC

FIELD: sewing industry. SUBSTANCE: tension regulator has control disk for driving pressure member provided with pressing spring for biasing two disks separated by plate, sleeve positioned between spring and disk, and pressing sleeve. All constructional members of tension regulator are axially aligned one with another. Pressing sleeve is positioned in threaded opening of control disk and provided with opening configured in accordance with shape of shaft rigidly fixed in plate. EFFECT: increased efficiency by uniform distribution of pressing force over the whole disk contact surface. 1 dwg