Apparatus for setting up a rapidly moving web for removal of a side portion therefrom

摘要: In an apparatus for removing the side portions from a rapidly moving web such as by threading through pair of rotary slitting knives that have their cutting edges spaced apart distance corresponding to width desired web, there is provided piercing located upstream setting-up initial entry into knives. The piercing-knives are supported on vertically reciprocable piston rods plunging at points inward where be slit and horizontally advancing outwardly form transverse cuts therein. pivotably mounted so they may rotate during outward movement enable utilized in edges.