On Sun, 20 Mar 2005, Paul O'Malley wrote:
> famous example one only has to look the years of delay in the
> implementation of the high pressure steam engine. Another example
Interestingly, just as Watt's patent on the external condenser
prevented others from advancing work on high-pressure engines, Watt's
own engine designs were slightly 'ham strung' by not being able to
use a crank-shaft to convert reciprocal motion of piston to rotary
because Watt believed this to be covered by a patent[1].
1. http://www.bbc.co.uk/history/historic_figures/watt_james.shtml
regards,
--
Paul Jakma paul at clubi.iepaul at jakma.org Key ID: 64A2FF6A
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