Good morning,
we have published a page dedicated to the speed limiters of the first systems of the late 1800s. The technique adopted is retraced in the light of the patents contained in the Google patent service.
as you will see, right from the start, the basic principle is the one that Watt first exploited even before the elevators were installed.
The site has taken an international turn and now has pages also in English. Nicola Imbimbo made himself available to translate the pages already published.
Happy reading everyone
and as usual any contribution is desired.