Slitter having arbor pairs mounted on a caster supported base shiftable and orientable along the slitter frame

A slitter for use in a slitting line, said slitter comprising a supporting frame having a first frame portion extending transversely of the center line of said slitting line with an inboard end to one side of said slitting line and an outboard end to the other side of said slitting line and a second frame portion extending from said inboard end of said first frame portion, said inboard end of said first frame portion and said second frame portion supporting a smooth upper surface, at least two pairs of cooperating blade carrying arbors, said arbors of said pairs each having an inboard end and an outboard end, an inboard bearing housing for each of said arbor pairs, said inboard ends of the arbors of each pair being mounted in their respective one of said inboard bearing housings, said inboard bearing housings being mounted on a common base, caster means on said base, said base and its caster means being located on said smooth upper surface of said support frame and being shiftable and positionable thereon with each arbor pair being shiftable thereby between a working position extending transversely of said center line of said slitting line and a set-up position extending away from slitting line, an outboard bearing housing slidably mounted at said outboard end of said first frame portion and being shiftable thereon between a retracted position and a position in which it engages said outboard ends of said arbors of any one of said arbor pairs when in said working position.