William Spooner started his company after spotting a niche for the production and sale of industrial drying equipment. His aim was to revolutionise the techniques of industrial drying by increasing its speed and efficiency. He achieved this by applying the core principles of forced convection to industrial drying and textile applications. The Spooner Dryer and Engineering Company started in a one-room building in Shipley, West Yorkshire, in 1932 when Spooner was fifty years old. He employed two men, as well as a 16-year-old-school leaver as his secretary – Arthur B Rooks – who later went on to become a director of the company. Initially, the company focused on improving the textile industry drying processes; and later turned to the paper trade. After three years the company outgrew its premises in Shipley and Spooner bought part of a small mill in Yeadon and moved his company there. The outbreak of World War II delayed the firm's expansion but after the war the expansion continued. Spooner began to explore the possibility of applying the drying technique he had evolved for textiles to the food industry. He developed the Spooner Food Machinery Company, a subsidiary of the Spooner Dryer and Engineering Company, which began full production in 1949. He later acquired Ilkley Hall as offices for the food company, but he also developed part of it into a recreational and social centre for his employees. In 1952, for his 70th birthday, his employees presented him with an oil painting portrait of himself by Patrick E. Philips as a token of their esteem and affection. Throughout his 70s, Spooner was still actively involved in the businesses he had started and became known as "The Industrial Peter Pan". In 1951 with the companies further expansion he bought the old Brewery Company in Ilkley as the new home for his parent company, and an adjoining old corn mill was converted into a drawing office block. Originally housed in a disused chapel in Hunslet, Leeds, The Spooner Food Machinery Company moved to the Carlton Works in Armley, Leeds in 1956. By 1957 Spooner's companies were producing machinery for the textile, paper, paperboard, leather, nylon, fiberglass and mine belting trades, employing 300 people and having subsidiaries in North America and South Africa. In 1959, the group became a public company under the name "Spooner Industries Ltd". Spooner retired as chairman in 1962, but remained as life president, actively involved until his death in 1967. He died peacefully at his home, Ashbrook, in Ilkley on 17 September 1967 and was buried in Ilkley cemetery along with his first wife and their son. At the time of his death he had hundreds of patents to his name. Spooner was a supporter of local causes, and in 1962 established his charitable trust: W.W. Spooner Charitable Trust. Spooner and his wife Mercie were collectors of English watercolours. Their collection was bequeathed to the Courtauld Institute of Art upon his death, and was published in the book The Spooner Collection of British Watercolours in 2006.
