PATENTS
No. 1610 5 June 1787 "A Steam engine on principles entirely new."
No. 2544 14 October 1801 "A new mode of constructing steam engines, and applying their power for the purposes of producing rotatory and other motions, without the interposition of a lever or a beam."
LETTERS AND SUBMISSIONS
1786
LETTER TO THOMAS GILBERT M.P. (regarding his steam carriage)
Wanlockhead, 24 September 1786
1787
LETTER TO THE ADMIRALTY (his proposal to raise the Royal George)
17 January 1787
LETTER TO JAMES TAYLOR (an indirect reference to the Dalswinton steamboat experiment)
Wanlockhead, 20 August 1787
1789
LETTERS TO PATRICK MILLER (relating to steamboat construction)
Wanlockhead, 1 May 1789
Wanlockhead, 19 May 1789
Carron, 24 June 1789
The above letters to Miller were reproduced in an article published in the Official Catalogue of the Great Exhibition of the Works of all Nations, 1851, Supplement, Volume 4, pages 1472-1476.
1804-1815
LETTERS TO FORBES OF CALLENDAR (see section on the Callendar Colliery)
From 1804 to 1815, relating to business dealings with Forbes; including an invitation to the funeral of his son John in 1807. (Held in the Falkirk Archives)
1814
LETTER TO ROBERT WIGHT, his accountant and adviser (to arrange a meeting with Glasgow shipowners) 5 June 1814
MEMORIAL for William Symington (26th Dec., 1814), engineer at Falkirk. To the Trustees, for improving the communication between Fife and Mid-Lothian by the ferries of Kinghorn and Leith.
1821
LETTER TO JAMES TAYLOR (relating to their business agreement)
Glasgow, 9 February 1821
1822
Authentic Account of the Origin, Progress & Utility of Steam Vessels by William Symington Civil Engineer Falkirk, Edinburgh and his appeal for Remuneration for the Invention 1st Novr 1822
LETTER TO JAMES WALKER 11 November 1822 (requesting his assistance)
1824
PETITION TO PARLIAMENT 4 November 1825 (with a MEMORIAL TO TREASURY dated 1 December 1824)
1825
LETTER TO ROBERT WIGHT (about preparation of his Petition to Parliament) Falkirk, 22 November 1825
1827
LETTER TO THE CALEDONIAN MERCURY 26 March 1827
LETTER TO THE CALEDONIAN MERCURY dated Falkirk, 19 September 1827
1828
SUBMISSION TO ADMIRALTY dated London, 4 March 1828 (containing suggestions and illustrations for a steam powered warship and a breech-loading cannon)
1829
LETTER TO HIS SON WILLIAM, dated Falkirk, 10 June 1829 (see the section on his auletic chronometer)