This film shows the processes of by-products being used to manufacture other useful products, such as soda soap, wagon grease for British Railways, and paint. Bradford Borough County crest appears in a circle. Opening Titles: City of Bradford Corporation By Products Department Photographed in natural colour by F. G. Dewhirst (Titles overlay an image of a paint bucket and brush.) Title – The animal origin of wool grease. Sheep are seen in a field; some are lying down, some are eating...

This film shows the processes of by-products being used to manufacture other useful products, such as soda soap, wagon grease for British Railways, and paint. Bradford Borough County crest appears in a circle. Opening Titles: City of Bradford Corporation By Products Department Photographed in natural colour by F. G. Dewhirst (Titles overlay an image of a paint bucket and brush.) Title – The animal origin of wool grease. Sheep are seen in a field; some are lying down, some are eating grass, some are stood looking at the camera. Title – wool scouring Wool is shown going through the scouring process in machinery. The wool is then shown on a conveyor belt. Title - The By-Products Works. Panning shots of buildings and land. Title -Arrival at the by-products works. A shot of a tunnel cuts to shots of buildings and water. Title - Grease (Extraction) Press House. A boat passes the works building, followed by shots of water pipes. Title - Grease Clarifying House There are more exterior shots of the buildings. A worker is supervising a large steaming vat; a close up of the vat shows the hot liquid inside. A man outside stands by a pipe. A crane is shown lowering barrels into a shipping container; the barrels are labelled ‘ANTWERP’. These barrels are seen stacked up. Title – Commencement of processing. Title – Crude Soap Ribbon Manufacture. A red-brick works building is shown, followed by liquid being poured into machinery. A worker shovels product and a bag labelled ‘CRUJOL’ is shown. Title – A large outlet for Crude Soap. Title – Wagon Grease for British Railways. Paste/grease is put into a metal container. Title – Solvent extraction of crude soda soap. Product is shovelled into a container. Title – The residual purified soda soap. A worker turns a wheel to loosen a valve and the product gushes out from the bottom. Another worker shovels the product into a metal bin. This is then emptied into a chute. Product is then shovelled into a large paper bag. Title – the extracted unsaponifiable drying oil. Machinery is shown working, followed by a worker directing liquid from a pipe down a funnel. Title – Manufacture of ‘Lanalose’ and ‘Lanaloid’. Machinery is shown carrying out this process, including shots of bags of CRUJOL. Title – Lanaloid Synthetic Wax. Steaming liquid pours from a pipe. A bag is shown labelled ‘Lanaloid’. Workers smash up the cooled down product and put into the bag. Title – Lanalose Oil Paint Vehicle. A worker removes the lid from a lanalose barrel and tips it over. He removes the sides of the barrel too and smashes up the product inside. Title – In the research laboratory (overlaying image of paint tin and brush.) A panning shot of the laboratory shows workers inspecting glass tubes/flasks. Title – The manufacture of varwolax crujol oil-bound water paint. Components of the process are seen on a work bench. The crujol is tipped into a bucket, water is added, and then other components are mixed in. The paint is ready and demonstrated by blue paint being used on an interior wall. Title – The manufacture of ‘no oil’ Lacquer paint. Components on a work bench are shown: white spirit, 60gms Esterified Gum, 60gms Lanalose. The components are mixed in a glass beaker over a Bunsen burner. The liquid is put into another labelled container. Scales are used for some measurements, and then the substance in the container is mixed up on a machine. The mixed liquid is tipped into a bowl. The paint is ready and is demonstrated on the painting of a box. Title – The manufacture of modified linseed oil gloss paint. The components are shown on a desk: 65gms varnish medium 1:1 linseed oil/esterified gum, 52gms lanalose solution (40% in white spirit). The components are mixed together and put in a labelled jar. A barrel of paint is ready; a worker demonstrates the use of the paint on an outside door. Title – This door was painted over three years ago with a similar paint. The brush is picked up and uses a painting motion to reveal the word ‘Finis’ in the centre of the frame. The film ends with the Bradford Borough County crest.