David Brown and Sons
WWII Park works made gears for all types of machines and vehicles, including for the Rolls-Royce Merlin engine. The aero-gear division moved to Meltham in 1940, supplying gears for the Hercules engines of the Bristol Aeroplane Company, and for Spitfires. Browns established a tank gearbox division at Meltham and at Penistone produced armour plating for Churchill and Cromwell tanks, and steel casing for blockbuster bombs. An aircraft foundry was built at Penistone to make castings for aero-engines, and made cables for the oil pipeline system for the Normandy landings.