Abstract: The present invention relates a fastening element for the connection of two sheets or plates (herein termed sheets) arranged at a selectable angle in relation to each other along their abutting edges using two gripping jaws able to be centrally connected with each other by means of a screw, said jaws having wings of different length and forming two bearing sockets, in each of which there are rotatable cylindrical gripping rollers provided with an axial gripping groove and consisting of elastic material.The purpose of the invention is to provide an improved form of such a fastening element remedying the defects of known devices and making it possible to set sheets at a predetermined included angle in a single manner. In this respect it should be possible for the gripping rollers to be slipped onto the sheets easily in the non-screwed tight condition and to prevent the gripping rollers from falling out during assembly.

Abstract: The invention relates a directionally adjustable low-voltage lamp comprising a concave reflector to reflect the light as a cone and having a base with a two-pole plug molded thereon. However, such lamp needs complex holders if it is desired to direct the light coming from the lamp in any desired direction. The object of the invention is to provide a directionally adjustable low-voltage lamp being able to be secured at any desired point on sheeting or boards so that the light cone from the lamp may be adjusted in any desired direction.