Sofa bed has arm rests mounted on L-shaped frames, upper arm of frame fitting into recess in sofa base and frame being pulled out to support arm rest in horizontal position by it increase mattress size

摘要

The sofa bed has arm rests (9, 9') which are mounted on L-shaped frames (13). The upper arm of the frame fits into a recess in the sofa base (2) and the arm rest fits against the other arm of the frame when it is upright. The frame is pulled out and the arm rest is supported in a horizontal position by the upper arm to increase the mattress size.