Abstract: An intermittent perforator wheel structure for providing a tearing edge in a workpiece sheet. The tearing edge is defined by a line of spaced elongated slits and a line of spaced short perforation slits offset from the line of elongated slits. The offset is made to be a small preselected amount. The offset may be preselected to assure that the torn portions of the sheet provided by the spaces between the short slits do not extend beyond the line of elongated slits whereby the edge of the sheet seen by a data processing machine, or the like, into which the sheet may be fed comprises a smooth edge with the torn portions being recessed within the straight smooth edge.

Abstract: An adjustable perforator wheel for use in providing a tear line in a sheet-type workpiece. The perforator wheel includes a pair of slotted wheels which are adjustably related to define a preselected smaller slot between elongated slitting portions of the wheel. The slots in the respective first and second wheels may be of relatively large size for facilitated manufacture with the resultant small slot being of extremely small size as desired.