Machines and machine parts for treating and processing textiles and material similar to textiles, plastic materials and/or paper materials, in particular in the form of material sheets or material sheet sections, in particular mechanical conveying devices for the specified materials, mechanical hemming devices and hemming installations as machine parts, mechanical folding devices, mechanical scissors, cutting, hemming and separating devices as machine parts; machines and devices for cutting out as machine parts; labelling and label folding machines; sewing machines; mechanical sewing devices with mechanical or computerised numerical track control; mechanical feeding, positioning, aligning and magazining devices