Patent ID: 7493687

Claim:
A workpiece-treating machine comprising: a pair of longitudinally extending and transversely spaced upright walls and a plurality of horizontal transverse webs bridging the walls and forming therewith a rigid elongated frame defining at one longitudinal end a receiving station, at an opposite longitudinal end an output station, between the receiving station and output station a pair of longitudinally spaced working stations, and a transfer station between the working stations; means for introducing workpieces into the frame at the receiving station and for taking workpieces out from the frame at the output station; means including tools in each of the working stations for treating the workpieces; a guide extending longitudinally above all the stations; a plurality of mounts shiftable longitudinally along the guides above the stations; at least one vertical rail on each of the mounts; and respective gripping means shiftable vertically along the rails and horizontally with the respective mounts through the stations for conveying the workpieces longitudinally from the receiving station through the working and transfer stations to the output station and for holding the workpieces in the working stations for action by tools of the treating means.