The Governor – controlling the power of steam machines

Power without control is unusable power, and long after the invention of the steam engine, finding ways of applying that power to tasks where consistency was of paramount importance was the 'Holy Grail' which many steam engineers sought to find. The best known of them was Greenock-born James Watt, whose name is forever associated with the story of steam power, although his achievements drew heavily on the innovations of others. The Governor explores the history and development of the centrifugal governor and its role in accelerating the Industrial Revolution. It was the centrifugal governor which brought precision to the application of steam power, and its story can be traced back to 17th century Holland and Christiaan Huygens' development of both the pendulum clock and system controls for windmills.

The hardback book, illustrated with modern photographs, historic plans and contemporary illustrations, will be published by Pen & Sword Books and is currently in production.

The Governor – controlling the power of steam machines is published in hardback by Pen and Sword Transport, price £30

The last few copies of The Victorian Photographs of Dr Thomas Keith and John Forbes White are available in hardback direct from the author at half price – £10 plus P&P. Use Contacts Page to order.

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All images and text © John Hannavy