Abstract: An apparatus for pressurizing an aircraft cabin structure and measuring the amount of leakage of the aircraft cabin structure comprises an air supply line which at a first end is connectable to a pressurized air source and which at a second end is connectable to the aircraft cabin structure so as to supply pressurized air from the pressurized air source into the aircraft cabin structure, an air supply valve disposed in the air supply fine, a pressure sensor for sensing the pressure inside the aircraft cabin structure and for providing signals indicative of the pressure inside the aircraft cabin structure, an air discharge line which at a first end is connectable to the aircraft cabin structure and which at a second end is connectable to an air discharge opening so as to discharge air from the inside of the cabin structure to the air discharge opening and an air discharge valve disposed in the air discharge line.

Abstract: An apparatus (10) for pressurising an aircraft cabin structure (12) and measuring the amount of leakage of the aircraft cabin structure (12) comprises an air supply line (14) which at a first end is connectable to a pressurized air source and which at a second end is connectable to the aircraft cabin structure (12) so as to supply pressurized air from the pressurized air source into the aircraft cabin structure (12), an air supply valve (36) disposed in the air supply line (14), a pressure sensor (50) for sensing the pressure inside the aircraft cabin structure (12) and for providing signals indicative of the pressure inside the aircraft cabin structure (12), an air discharge line (42) which at a first end is connectable to the aircraft cabin structure (12) an which at a second end is connectable to an air discharge opening (44) so as to discharge air from the inside of the cabin structure (12) to the air discharge opening (44), and an air discharge valve (48) disposed in the air discharge line (42).

Abstract: A file of successive sheets is delivered to a converting station by a faster first conveyor, and a stream of partially overlapping sheets is removed by a slower second conveyor. Partial overlapping between the leading sections of successive sheets in the file and the trailing sections of the respective preceding sheets in the stream is due to the difference between the speeds of the two conveyors. A deflector assembly at the converting station ensures that the leading sections of successive sheets of the file can predictably overlap with the trailing sections of the immediately preceding sections of the stream by causing the trailing sections to move out of the way of oncoming leading sections and/or vice versa.