Abstract: A device for locking a beam to an upright column. The beam is provided with hooks adapted to be inserted into holes in the upright column and to be locked by a member which is a part of a spring-activated lock device. The lock device can be extracted and moved to a position in which a first stop surface of the device rests on the outside of the beam below the hole. When the lock device is moved to a position such that a second stop surface of the lock device upon insertion of the beam into an upright moves the member to a locking position of the beam to the column.

Abstract: A cabinet having a rear wall, two side walls and a frame-shaped front wall to form a box-like structure. The adjoining edges of the side walls and rear wall are formed in such a manner that they can be interconnected together without the use of fastening means, and wherein the walls are prevented from separation. The walls are so constructed that the cabinet which is formed allowing outer walls in which the outer surface are in a common plane. The interconnected portions on the interior of the cabinet are so constructed that portions thereof serve as means for receiving shelf supports. A part of the rear wall has an edge which is inwardly bent and adapted to slide in a groove formed by a bent edge portion of one of said side walls.