MECCANISMI SOMMATORI A DISCHI ELETTRODOMESTICI

摘要

An electromechanical adder mechanism for selectively influencing the operation of sewing machine stitch forming instrumentalities in accordance with a preselected pattern and comprising a plurality of discs which are arranged coaxially on a drive shaft including discs keyed to the drive shaft and freely journaled discs frictionally coupled to turn with the keyed discs. Axial cam segments on adjacent keyed and freely journaled discs may be selectively brought into engagement by electromagnetically influenced stop means for changing the angular orientation of the freely journaled discs relative to the keyed discs thus selectively to regulate the total axial dimension of the stack of discs on the shaft which is the output of the adder mechanism.