Thomas Doubleday
One of the early developers of carbonate of soda manufacturing on the Tyne
1775 Purchased the soapery that had been set up by Messrs. Lamb and Waldie at the Westgate, later moved to The Close, Newcastle.
1808 Messrs. Doubleday and Easterby started making sulphate of soda by decomposing the waste salts from the soap-boilers, which consisted chiefly of common salt and some sulphate of soda. Their chief supply of raw material was from Messrs. Jamieson and other soap-boilers at Leith.
At first they purchased their sulphuric acid but between 1809 and 1810, they got the plans of chambers from Messrs Tennants, of Glasgow, and erected the first chamber on the Tyne[1]
1827 Thomas Doubleday gave Cookson and Co the plans of his chamber, furnaces, etc, when they established their soda works[2]