| Description | Mis-dated by Boulton as 10 Apr. Docketed "Tidy & Spence’s engine." Summarised "Messrs. Tidy & Spence require an engine to enable them to roll lead for Government. Boulton proposes Watt stays at Soho when he is away. Mr. Wasbrough and his engine and the patents, runs down Boulton & Watt engine." |