Device for the unwinding and winding up of a web roll

Abstract

A device for unwinding and rewinding a background web roll for photographing purposes and comprising pairs of support rollers which are rotatable about parallel axles and journaled in axially interspaced holders common for each pair of said support rollers, at least one of said holders being U-shaped and being provided with U-leg portions having an interspace between them exceeding the diameter of said web roll in order to allow extension of the web roll through said holder.

Dependencies are inferred from the claim text.