Abstract: For combination with apparatus, including a printing press roller that oscillates along a roller axis and relative to a cam, and in response to tracking of a follower in reversing spiral grooves defined by the cam, the cam also having a cylindrical surface intersected by the grooves comprising a shaft carrying the cam and on which the roller oscillates, endwise; first bearing annular sleeve structure associated with the roller and receiving the shaft; first axially spaced stops carried by the sleeve structure; first bearing rollers spaced about the axis and located between the shaft and the bearing sleeve structure, and a first cage for the rollers allowing axial shifting of the cage and rollers between the stops, the axial spacing between the stops substantially exceeding the width of the cage and rollers.

Abstract: A machine for cutting animal tissue into pieces, comprises(a) a frame,(b) slicer means including slicers carried by the frame to rotate for slicing the tissue into elongated strands fed along parallel paths of widths determined by spacing of the slicers,(c) rotary cutter means including cutters carried by the frame to rotate and intercept the strands fed along said paths, and for cutting the strands crosswise thereof and at intervals predetermined by rotary spacing of said cutters, thereby to form said pieces having predetermined sizes.