Roll display device

Claim 1

A roll display device comprising: a pair of cylindrical roll mounting members; an expandable frame having a lattice-work structure for carrying said mounting members in substantially parallel relation, said frame having upper, lower, left and right sides and comprising a first set of at least three bars pivotably connected by pins to a second, crossing set of at least three bars, said first and second sets of bars being symmetrical and so arranged that the frame comprises a central pivot pin, two upper and two lower ends and four pivot pins centrally located between the upper and lower ends on the upper, lower, left and right sides of the frame, respectively; a pair of mounting means for rotatably mounting the mounting members onto the frame, each of said mounting means comprising a support member for connecting one of said mounting members to the frame and a pair of axles carried at the ends of the support member for rotatably mounting said one mounting member therebetween, said support members being respectively fixed at a point approximately midway between the ends thereof to pivot pins on the frame and being held parallel to each other by means of the upper and lower ends of the frame slidably mounted thereon; a base, said base comprising: (a) a frame support to which the frame is fixedly mounted by the central pivot pin, said frame support including a support strap having a relatively long, central portion extending parallel to the mounting members, for slidably receiving and guiding the upper and lower pivot pins of the frame; (b) a mounting block to which is rotatably attached the frame support about an axis passing through the central pivot pin, and (c) a fixing base to which is rotatably attached the mounting block about a horizontal axis; and means for attaching the ends of the roll onto the mounting members.