Abstract: An arrangement for transforming a planar support (2) includes first and second rotating cylindrical transformation tools (16, 17), cooperating to convert the support (2), first and second side bearings (26, 27), holding the first tool (16) for rotation (Rs), third and fourth side bearings (29, 31), holding the second tool (17) for rotation (Ri), spacers (43, 44, 46, 47) having an inclined face (48) and slidable (S) to adjust the respective distances (e, e1, e2) between the first and third bearings (26, 29) and between the second and fourth bearings (27, 31), to set a radial gap (20) between the two tools (16, 17). In another solution, either as an alternative to or in cooperation with the first solution, the spacer (43) is moved (S) by a differential screw (57) having a first thread (58) that engages with a tapped hole (59) in an integral part (61) of one of the bearings (29) and a second thread (62) different than the first thread (58) and engaging with a tapped hole (63) in the spacer (43).

Abstract: According to one embodiment, a booklet page turning apparatus includes a guide member which is provided near a vacuum pad to freely project/retreat from a plane corresponding to the suction surface of the vacuum pad, the guide member moving integrally with the vacuum pad and coming into contact with a page of a booklet at the page turning position to regulate rising of the page.

Abstract: A page turning device is provided in which a first elongated arm is rotatably mounted for circular motion substantially parallel to but above the plane of the volume. A page lifting facility cooperates with the rotation of the first elongated arm to permit the first elongated arm to rotate between a lifted upper leaf and the remainder of the leaves of the volume. Continued rotation of the first elongated arm turns the upper leaf and positions the arm for turning of the next leaf. In this manner an unlimited number of leaves may be sequentially turned by a mechanically simple device which is immediately ready for use when a volume is positioned thereon.

Abstract: A page turning device is provided in which a first elongated arm is rotatably mounted for circular motion substantially parallel to but above the plane of the volume. A page lifting facility cooperates with the rotation of the first elongated arm to permit the first elongated arm to rotate between a lifted upper leaf and the remainder of the leaves of the volume. Continued rotation of the first elongated arm turns the upper leaf and positions the arm for turning of the next leaf. In this manner an unlimited number of leaves may be sequentially turned by a mechanically simple device which is immediately ready for use when a volume is positioned thereon.

Abstract: A first horizontal elongated plate has a longitudinally extending slot therein. Each of a plurality of vertical L shaped members has a bottom horizontal leg disposed at right angles to the slot and an upwardly disposed vertical leg. Each of a like plurality of soft yieldable elements is manually slidable in the slot, each horizontal leg extending through a corresponding element and overlying the top surface of said first plate. A second horizontal plate is secured to the top surface of the first plate, said vertical legs being disposed adjacent one edge of the second plate, said first and second plates having regions spaced apart to permit said members to be slid back and forth along the slot. A third horizontal plate is secured to the first plate remote from said members, adjacent parallel edges of said second and third plates being spaced apart to define an opening parallel to said slot through which said vertical legs extend.