Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,103 pages of information and 233,633 images on early companies, their products and the people who designed and built them.
of Sirocco Works, Belfast.
of St. Nicholas Buildings, Newcastle-on-Tyne (1937).
Manufacturers of tea-drying machinery and the "Sirocco" fan.
1881 Company founded by Samuel Davidson in Belfast, developing machinery for processing tea.
1898 Private company.
1898 Samuel Davidson invented the forward-bladed centrifugal fan - the "Sirocco" fan.
1926 Davidson patented a mechanical dust collector.
1927 Received an order from the Durban Navigation Collieries of South Africa an order to supply one of the most power mine fans yet constructed. It is to be capable of dealing with 700,000 cubic feet of air per minute against a resistance of 7in. of water gauge, and it will require a steam engine of 1200 horse-power to drive it.
1937 Fan manufacturers. "Aeroto" Screw-type Fans. "Sirocco" Centrifugal Fans 
1961 Engineers and iron founders, specialising in the manufacture of fans for all purposes, air conditioning, dust collecting and pneumatic conveyance plant, and tea estate machinery. 1,300 employees.