AN IMPROVED GOVERNOR FOR MOTIVE-POWER ENGINES
Year: 1871

page_text: LETTERS PATENT to Thomas Fawcett, of Dewsbury, in the County of
York, Timber Merchant, and James Coulter, of the same Place,
Engineer and Machinist, for the Invention of "AN IMPROVED GOVERNOR
FOR MOTIVE-POWER ENGINES."
Sealed the 18th June 1872, and dated the 21st December 1871.
PROVISIONAL SPECIFICATION left by the said Thomas Fawcett and
James Coulter at the Office of the Commissioners of Patents, with
their Petition, on the 21st December 1871.
We, THOMAS FAWCETT, of Dewsbury, in the County of York,
Timber Merchant, and JAMES COULTER, of the same Place, Engineer
and Machinist, do hereby declare the nature of the said Invention for
"AN IMPROVED GOVERNOR FOR MOTIVE-POWER ENGINES," to be as follows :-

page_text: speed of steam or other motive-power engines, and consists of a pair of
weighted lever arms hinged to a rotary spindle supported on a pillar or
stand (somewhat similar to ordinary engine governors).
These arms are hinged to the spindle one on each side, but so that
they cross each other, that is to say, the hinge or fulcrum is on one side
of the spindle, and the weighted end on the other side thereof. Each
lever is curved or bent forming an elbow near the fulcrum end, so that
the parts where they cross each other lie about horizontally with their
fulcrums. The said arms pass through through a slot hole formed in or
attached to the valve rod of the engine to be governed at the parts where
they cross each other, and the said valve rod may or may not pass through
the spindle, and stand according to the relative position of the valve.
A regulating weight is also required to be applied to the valve rod or
its connections to adjust this governor to the required speed of the
engine.
filed by the said Thomas Fawcett and James Coulter in the Great
Seal Patent Office on the 21st June 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, THOMAS
FAWCETT, of Dewsbury, in the County of York, Timber Merchant, and 2
JAMES COULTER, of the same Place, Engineer and Machinist, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-first day of December, in the
year of our Lord One thousand eight hundred and seventy-one, in the
thirty-fifth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto us, the said Thomas Fawcett and James
Coulter, Her special licence that we, the said Thomas Fawcett and
James Coulter, our executors, administrators, and assigns, or such
others as we, the said Thomas Fawcett and James Coulter, our
executors, administrators, and assigns, should at any time agree with,

page_text: and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "AN
IMPROVED GOVERNOR FOR MOTIVE-POWER ENGINES," upon the condition
(amongst others) that we, the said Thomas Fawcett and James
Coulter, our executors or administrators, by an instrument in writing
under our, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed
in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
•
NOW KNOW YE, that we, the said Thomas Fawcett and James
Coulter, do hereby declare the nature of our said Invention, and in
what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement and accompanying
Sheet of Drawings (that is to say) :—
This Invention relates to apparatus for governing or regulating the
speed of steam or other motive-power engines, and consists of a pair of
weighted lever arms hinged to a rotary spindle supported on a pillar or
stand (somewhat similar to ordinary engine governors).
These arms are hinged to the spindle one on each side, but so that
they cross each other, that is to say, the hinge or fulcrum is on one side
of the spindle, and the weighted end on the other side thereof. Each
lever is curved or bent, forming an elbow near the fulcrum end, so that
the parts where they cross each other lie about horizontally with their
fulcrums. The said arms pass through a slot hole formed in or attached
to the valve rod of the engine to be governed at the parts where they
cross each other, and the said valve rod may or may not pass through
the spindle, and stand according to the relative position of the valve.
A regulating weight is also required to be applied to the valve rod or
its connections to adjust this governor to the required speed of the
engine.

page_text: weights so as to cross each other, and there be connected to the valve
rod in manner substantially as shewn and described.
In witness whereof, we, the said Thomas Fawcett and James
Coulter, have hereunto set our hands and seals, this Eighteenth
day of June, in the year of our Lord One thousand eight hundred
and seventy-two.
THOMAS FAWCETT. (L.S.)
JAMES COULTER.
(L.S.)
Witness,
WALTER BRIERLEY,
(Tasker & Brierley,)
Patent Agents,
Halifax & Bradford.