DISPOSITIVO CORTAHILO PARA MAQUINA DE COSER

摘要

To control the oscillation of a hook-shaped cutter (18), the device uses a fluid pressure actuator fixed directly beneath the throat plate (1) and operating the hook by means of an arm (14) connected directly to the central part of a slidable plunger (8) within the cylinder (2). The cylinder is provided with flanges (3) to which are connected end plates (6) with the interposition of sealing sheets of elastomeric material (5) serving as shock absorbers. The hook-shaped cutter cooperates with a rectilinear counter-blade (23) which is lightened towards the point and can be made from hard metal such as metal carbides.