Abstract: Disclosed is a rotary sign board having a case split into two or more case sections, wherein the case sections surround the outer periphery of a display assembly, and are adapted to be pivoted through hinge assemblies, thereby being opened or closed, so that an advertisement object can be conveniently replaced. The rotary sign board includes: a frame having a top frame body surrounding a post, and a bottom frame body arranged to be spaced from the top frame body; a display assembly rotatably installed between the top frame body and the bottom frame body of the frame; a case split into two or more case sections, the case sections being arranged between the top frame body and the bottom frame body so as to surround the outer periphery of the display assembly; and hinge assemblies provided at the top and bottom ends of the adjacent lateral edges of the case sections, respectively, so as to allow the case sections to be pivoted.

Abstract: A rotary file is disclosed herein for holding a plurality of photo holders slideably carried on a pair of spaced-apart rings between support members which are mounted on a base by a swivel mechanism. The rings include an extension arm securing each ring to a turning shaft having its opposite ends rotatable through the spaced support members. Each ring includes a space or gap between opposing end segments selectively opened and closed by a closure element such as a movable sleeve or the like. Each photo holder includes openings to receive the rings so as to be slideably carried thereon. Knobs mounted on opposite ends of the turning shaft permit manual rotation of the shaft about a horizontal axis while the photo holders are loosely held on the rings.

Abstract: A plurality of rotatable card holders are disposed end-to-end on a horizontal fixed shaft supported at its ends by a tubular frame. Each of the card holders comprises two coaxial sections each of which is generally cylindrical with a peripheral web for holding the cards. Each of the cards has two notches for receiving the webs of the card holder so as to mount the card removably and hingedly on the card holder. At one end of each card holder there is provided a capstan having radially projecting spokes which extend out beyond the cards to provide means for manually rotating the card holder on the shaft. Between the two sections of each card holder there is provided a brake device comprising two H-shape members disposed respectively on opposite sides of the shaft and connected by two screws.