An original camera roll by Mr B.H. Cooper as part of a production into the making of cathode ray tubes (CRT's) for television sets filmed at the Thorn AEI factory at Sunderland. Laboratory tests and close-ups of equipment components at the Thorn cathode ray tube factory in Sunderland. Interior factory shots of cathode ray tube (CRT) manufacture, presumed to be at Thorn Sunderland. Shots of laboratory, tests and close-ups of equipment components. Exterior shots of tanks. A cathode ray...

An original camera roll by Mr B.H. Cooper as part of a production into the making of cathode ray tubes (CRT's) for television sets filmed at the Thorn AEI factory at Sunderland. Laboratory tests and close-ups of equipment components at the Thorn cathode ray tube factory in Sunderland. Interior factory shots of cathode ray tube (CRT) manufacture, presumed to be at Thorn Sunderland. Shots of laboratory, tests and close-ups of equipment components. Exterior shots of tanks. A cathode ray tube is taken by hand off an appliance and placed on an automated machine which implants anode buttons. Each CRT (essentially comprising of a large moulded glass bulb affixed with an electron gun) undergoes the same process. Further factory scenes depict later stages on the production line, featuring the CRTs in transit and separate shots of aluminium valves. A man in a yellow boiler suit walks away from a stationary lorry carrying a canister of liquid petroleum gas towards some large white tanks labelled ‘Butane’. Back in the factory, the bulbs are filmed being heated and then inserted with valves. The CRTs are then heated or baked while suspended on rotating automated mechanisms. These scenes are cut in a fast flowing montage style and include many close-up shots.