POLE STEAM-ENGINIv 107 



'Asp/ Captain Kenny, for South America. I was on board 

 when the ship sailed. 



"I see among my papers, in May, 1819, in reference to the 

 patent, is the following note: 'Mr. Michael Williams said it 

 was verbally agreed that Captain Trevithick should have one- 

 quarter part of the savings above twenty-six millions.' This, 

 I believe, was the average duty of the engines at that time. 



" I had several assurances relative to Trevithick's claims, and 

 much correspondence, but no allowance \vas made from any 

 mines but Treskerby and Wheal Chance ; though Trevithick's 

 patent and boilers were used throughout the county without 

 acknowledgment ; and the duty of the engines had soon in- 

 creased from twenty-six millions to about seventy millions. 



" In 1819 I attended at the account-houses of Treskerby and 

 Wheal Chance, of which the late Mr. John Williams, of Scor- 

 rier, was the manager, in consequence of some of the adven- 

 turers objecting to continue the allowances on the savings to 

 Captain Trevithick, when Mr. Williams warmly observed, that 

 whatever other mines might do, he would insist, as long as he 

 was manager for Treskerby and Wheal Chance, the agreement 

 made should be carried into effect. 



" I remain, my dear Thomas, 



" Your very affectionate father, 



U KD. EDMONDS." 1 



The agreement with Mr. Sims, or rather with Mr. 

 Michael Williams, late M.P. for Cornwall, who exercised 

 large authority in Cornish mines, was that lie should 

 have for 200/. one-half of the patent for the high- 

 pressure pole -engine, as applied to Cornwall and 

 Devon. 



Trevithick had desisted from securing; a patent for 

 the large high-pressure steam-boilers and expansive 

 working, on a verbal understanding that he should 

 receive one quarter of the saving from the reduced con- 



Portion ol'a letter written at l'en/;imv, stli l-Ylmiaiy, 1853. 



