| 摘要 |
<p>A device for cyclically rearranging a pile of rectangular or square sheets, particularly a pile (182) of photographic prints, comprises a first (12) and a second (14) frame parts movable with respect to each other and parallel to the main plane of the pile, and elements which grab a single sheet (188) from one side of the pile and bring it to the other side of the pile during the reciprocating motion of the frame parts. Said elements comprise: (a) a separator device (20, 68, 71) to separate a sheet from the pile, (b) a feeding device (22) to feed sheets to the separator device, (c) retainer devices (26, 28, 32, 80) to retain a single sheet in the first frame part and the remainder of the pile in the other frame part, and (d) a guiding device (79) to bring back the single sheet to the other side of the rest of the pile. The device for retaining the individual sheets is a pincer arrangement (32/78; 278; 32/288; 266/290) arranged downstream of the separator device (68, 69) and of which the retaining and releasing motions may be controlled by the relative motion of the frame parts (12, 14).</p> |
