Abstract: Coke oven door overturning apparatus of this invention provides lateral turning and leveling of a door laid down to be repaired, checked or otherwise treated. The apparatus comprises an electric winch for effecting up and down movement of the door turning apparatus of this invention provides lateral turning and leveling of a door laid down to be repaired, checked or otherwise treated. The apparatus comprises an electric winch for effecting up and down movement of the door through a wire cable leading to a door holding frame, a lifting device for leveling the door in the laid down condition, and a lateral turning device capable of rotating the door by 360 degrees in order that the door may be faced in any desired direction for treatment.

Abstract: One cycle of operations for pushing-out of the coke, including door removal, jamb cleaning, coke guidance and reinstallation of the removed door can be conducted on one spot by employment of a common passage system for door extractor, jamb cleaner and coke guide cage, and of an automatic centering mechanism which allows the car to be positioned at once exactly in front of the coking chamber without necessity of highly skilled workman.

Abstract: Any type of door bottom surface can be completely cleaned by the cleaning apparatus of this invention which comprises a carriage which is driven along a pair of horizontal platforms per se forming therebetween a passage for the carriage, a pair of supporting plates pivotably mounted on the carriage, a radial cutter device rotatably held by the supporting plates at the latter's frontward ends, said radial cutter device being cylindrical and having thereon several cutting blades radially extending and longitudinally aligned in parallel, a pair of coil springs charged between said front ends of the supporting plates and front portions of the carriage, and drive means for moving the radial cutter device and the carriage itself.