Sofa convertible into bed - has movable chassis in form of drawer fitting under sofa which is pulled out to increase length for use as bed

摘要

The sofa-bed is in the form of an upright back and a fixed seat section. Under the seat slides a chassis in the form of a drawer whose depth is equal to the height of the seat frame from the ground. The drawer is less than half the length of the bed mattress and can be pulled out from under the seat to increase its length. A base panel in the drawer has a series of mattress supporting slats formed in it and is mounted on a linkage so that it can be raised horizontally and moved laterally so that it abuts against the seat on the same level as it to support the lower half of the mattress.