Abstract: The invention concerns an arrangement for the bending of laying tubes for wire-winding layering apparatuses, in which the molding body that determines the form of the laying tube runs essentially horizontally and is rotatably supported, such that a better manipulation of the highly heated laying tube is achieved during bending. The molding body also consists of two drums, one inserted into the other, the outer one of which has a lateral edge that matches the laying tube form desired and the two drums have a generated surface that matches the laying tube form desired. Together, they serve as the stop surfaces for the bending process. In this manner, the bending of the laying tubes is considerably simplified and a precise laying tube form is achieved.

Abstract: Compounds of general formula ##STR1## wherein R.sup.

Abstract: A device for automatically detaching and/or loosening coke within a coke oven chamber, particularly such a chamber of the type having an inclined or obliquely extending floor, includes a track support adapted to be mounted at a position confronting the coke removal opening of the coke oven chamber. An elongated poking bar is supported by the track support and has at a first end thereof a stoking or broaching head for abutting or scraping coke within the chamber. A trolley is mounted on the track support for movement therealong, and the poking bar is pivoted to the trolley. A reversibly operable cable drive moves the trolley and thus the poking bar along the track support from an initial position whereat the poking bar is positioned outside of the chamber to an operative position wherein the broaching head of the poking bar is inserted into the chamber to abut against coke therein.

Abstract: A socket structure for a ball point refill, which comprises a ball made of corundum and arranged inside an outer supporting shell provided in its interior with a compound bearing consisting of a backing shell having a hardness exceeding 800 kg/sq.mm Vickers and an inner lining facing the ball and having a hardness of less than 200 kg/sq.mm Vickers.