They eventually swallowed up the rival Copperhouse Foundry run by Sandys, Carne and Vivian.

By the time Woolf retired in 1836 the Cornish engine, owing largely to his efforts, was a thing of magnificent beauty and efficiency.

In 1803, Woolf obtained a patent on an improved boiler for producing high pressure steam.

As a Cornishman, he was also familiar with Trevithick and his newly developed high-pressure 'puffer' engines that were then entering service.

[2] Examples of Woolf compound rotative beam engines may be seen at Abbey Pumping Station, Blagdon Lake, Claymills Pumping Station, The Hamilton Museum of Steam & Technology, and the Western Springs Pumphouse, now part of the Museum of Transport and Technology Auckland, New Zealand.