Wooden frame for e.g. painted canvas, has four posts with thin slot section having inward profiled section, cross-piece introduced between posts and plates introduced in corners to simultaneously tension canvas and assemble frame

摘要

The frame has four posts with thin slot section having an inward profiled section, a flexible crosspiece, and four plates integrated with wrenches. The four posts (2) are positioned at four ends of a canvas (3). The cross-piece is introduced between the posts and the plates are introduced in the corners to simultaneously tension the canvas and to assemble the frame.