THROTTLING GOVERNORS


| January/February 1958


Alden, Minnesota

LIKE THE STEAM ENgine itself, the throttling governor was invented and first used in England. Watts first governor made in that country, was of crude type without valve and valve chamber being built integral with the revolving ball assembly, as American governors were made. It was of the plain, gravity-type head, usually mounted on the engine frame and was connected to a butterfly valve which might be placed anywhere on the steam line leading to the engine, by a rod with suitable linkage to fit the engine to which it was attached.

It might be said, that a Watt engine was governed by remote control, as often the governor was located several feet distant from the butterfly valve. American governor 'builders discarded the old butterfly valve and substituted a valve of the dual-disc type and placed this valve in a chamber directly connected with the governor head itself.

In this country about the first attempt to make a throttling governor was made by Judson in 1848 at Rochester, New York.



This governor used the gravity-type of ball head, the balls were of large size and of sufficient weight to pull the governor valve wide open (whenever the engine throttle was closed) by the force of gravity alone, no springs were employed in its design to raise the valve from its seat.

In 1859 Robert Gardner designed a gravity-type governor quite similar to the old 'Judson' and his governor, known to the trade as the 'Gardner Standard Governor' was built and sold by The Gardner Governor Co., of Quincy, Illinois, for many years.














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