Shearing machine having rotatable cutter wheels

A shearing machine for cutting sheet metal of varying thickness comprising a supporting body having an upper and lower portion, at least one pair of rollers freely journalled on a shaft fixed to the lower portion of said body and a handle means for manually guiding said body about on said rollers, a freely rotatable cutter wheel having a planar edge mounted about a horizontal axis in the lower portion of said body, a driven cutting wheel having a serrated peripheral edge mounted in the upper portion of said body for rotation about an axis parallel to the axis of said freely rotatable cutting wheel, the peripheral edges of said cutting wheels being bevelled, said wheels being arranged offset axially with respect to each other so that the large side faces formed by said bevels are disposed in the same vertical plane and in tangential contact with each other to co-rotate, said body having means for removably mounting an electric hand motor for driving said driven cutting wheel.