of Vulcan Ironworks, Thornton Road, Bradford.
formerly Thwaites and Carbutt.
1880 Company on 4 acres and employed 200 men and was the largest (what?) in Bradford.
1894 Battery of Filters for Lay Sugar Factory in Cairo.
1901 Advertising steam hammers, steam engine-driven centrifugal pumps (Capell's patent) and Root's blowers, Stewart's Rapid Cupolas, Andrew Howatson's patent water softeners and filters, Goodwin & How's patent ladles, steam and hydraulic hoists, cranes of all descriptions 
Description and illustrations of Stewart's patent 'Rapid Cupola' made by Thwaites Bros. 
1914 Engineers. Specialities: steam hammers, Roots' blowers, foundry plant and metallurgical installations for copper, lead etc. 
1922 Directors: A. D. Ellis, H. S. Clough, and T. H. C. Homersham.
- Vertical steam engine. 12 bhp. Exhibit at Bradford Industrial Museum
- Small vertical reversing steam engine at New Zealand National Maritime Museum, Auckland (photo)