Abstract: In a reel furnace having a strip reeling device, the strip reeling device comprising a reel shaft, a reel drum supported on the reel shaft and at least one stirrup clamp, the reel shaft passing through a furnace wall delimiting the inner space of the reel furnace and being supported rotatably in supporting bearings outside the reel furnace, the reel drum and the at least one stirrup clamp being positioned with respect to one another by means of a connection element, and a gap for receiving a strip head being set between the reel drum and the at least one stirrup clamp. The useful life of the reel drum is appreciably increased and a strip thickness-dependent setting of the entry gap for the hot-rolled strip is ensured when the reel drum is designed as a closed body and the connection element is designed as an actuating device for fixing a specific gap width between the reel drum and the stirrup clamp and for clamping a strip head which has entered the gap.

Abstract: In a reel furnace having a strip reeling device, the strip reeling device comprising a reel shaft, a reel drum supported on the reel shaft and at least one stirrup clamp, the reel shaft passing through a furnace wall delimiting the inner space of the reel furnace and being supported rotatably in supporting bearings outside the reel furnace, the reel drum and the at least one stirrup clamp being positioned with respect to one another by means of a connection element, and a gap for receiving a strip head being set between the reel drum and the at least one stirrup clamp. The useful life of the reel drum is appreciably increased and a strip thickness-dependent setting of the entry gap for the hot-rolled strip is ensured when the reel drum is designed as a closed body and the connection element is designed as an actuating device for fixing a specific gap width between the reel drum and the stirrup clamp and for clamping a strip head which has entered the gap.

Abstract: An air filter, in particular for cleaning the combustion air for internal combustion engines, having a cylindrical housing provided with an unfiltered air inlet and with a clean air outlet mounted substantially concentrically on one of the axial end faces of the housing. An extension tube, which extends into the housing, is provided at the clean air outlet; a center tube, which extends into the housing, is secured to the inner wall of the extension tube, and a metal-free filter insert is slid onto the center tube. The filter insert has a radial packing on its end face which faces the extension tube, and the opposite end face of the insert is closed. The radial packing is provided with a sealing bead which is freely movable in the radial direction. A metal-free safety cartridge optionally may be arranged inside the center tube.