Abstract: A roll-way is assembled from roll blocks to permit frictionless displacement of goods or vehicles placed thereupon. The roll blocks contain a base body having a roll surface into which there is embedded a multitude of rolling balls that are closely spaced from each other and located in associated spherical cavities. The rolling balls protrude from the associated spherical cavities by less than half of their circumference and are embedded in a rollingly movable manner in the roll surface.

Abstract: The spacing retainer contains spacer elements comprising a multiple number of interconnected angle elements and locking elements. The locking elements are lockingly connected with a first structural steel fabric by means of locking parts at their free ends. A second structural steel fabric is held at a spacing from the first structural steel fabric by means of the series-arranged and side-by-side arranged spacer elements. The spacer elements comprise struts for their reinforcement.

Abstract: A stone set is described in which a fundamentally known base stone, especially a base stone of concrete or the like, with a principally L-shaped cross-sectional surface is used. The base stone (1) has on its first and second legs (2; 3) a first and second seat (4; 7), respectively. The seats (4; 7) are formed complementary to one another as a recess or projection. In an assembly of exclusively base stones the result is a wall inclined relative to the vertical. The wall set in accordance with the invention, in contrast to this, makes possible the construction of a vertical wall through the use of a supplemental stone (10) with a likewise L-shaped cross-sectional surface. On its first leg (12) a first and second seat (15; 14) are provided on its upper and lower sides, to engage the first and second seat (4; 7) of base stones (1) located above and below it. The stones arranged in an assembly are similarly oriented and aligned.

Abstract: A support for flat building elements comprising a plate for engaging the element, having on one side four retaining members at the corners of a square. Each retaining member is divided along part of a diagonal of the square. The plate may be disc-shaped or in the form of portions of uniformly graduated thicknesses and the same cross-sectional shape. The plate may be apertured symmetrically between each pair of adjacent retaining members, the internal width of the or each aperture being slightly greater than the cross-sectional width of the respective members. Between each aperture and each adjacent retaining member, the plate may be formed with a hole for securing it or a segment thereof by a nail or screw.