Abstract: A system for controlling a dump gate in a conveyor system (e.g. carrying printed copy from a high-speed printing press to stackers) detects a marker carried by a marred product (e.g. a metal tab fitted when splicing a new reel of paper) to start a counter which counts the products passing and opens the dump gate a predetermined count. A counter closes the dump gate again when a second predetermined count of passing products is reached.

Abstract: A fire-resistant enclosure comprises a casing, a hollow internal compartment defined by said casing, a door opening defined in said casing and providing access to the internal compartment and a door fitted into and closing said opening. Both the door and at least that part of the casing defining the door opening are constructed primarily from rigid fire-resistant intumescent material comprising a resin incorporating a blowing agent such that when subjected to heat the material of the door and the material of the casing at the door opening swell towards each other and provide a heat and water resistant seal between said door and said door opening.