A NEW MODE OF PRODUCING A ROTATORY MOTION APPLICABLE TO USEFUL PURPOSES
Year: 1803

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, BRYAN
DONKIN, of Dartford, in the County of Kent, Millwright, send greeting.
WHEREAS His most Excellent Majesty King George the Third did, by
His Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Third day of August, in
the forty-third year of His reign, give and grant to me, the said Bryan Donkin,
His especial licence, that I, the said Bryan Donkin, during the term of years
therein mentioned, should and lawfully might use, exercise, and vend, within
England, Wales, and the Town of Berwick-upon-Tweed, my Invention of "A
NEW MODE OF PRODUCING A ROTATORY MOTION APPLICABLE TO USEFUL PURPOSES;"
in which said Letters Patent there is contained a proviso obliging me, the said
Bryan Donkin, by an instrument in writing under my hand and seal, to cause
a particular description of the nature of my said Invention, and in what
manner the same is to be performed, to be enrolled in His Majesty's High
Court of Chancery within one calendar month after the date of the said
recited Letters Patent, as in and by the same, relation being thereunto had,
may more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Bryan Donkin, do hereby declare that my said Invention is described in
manner following; that is to say:-

page_text: any
I carry my new method of producing a rotatory motion into effect by intro-
ducing steam beneath the surface of water or any other dense fluid, that a
temperature too elevated to produce any notable degree of condensation in
the same; and I dispose or present within the said water or dense fluid, and
immediately over the place of introduction of the said steam, a certain inverted
vessel or bucket, which, when filled with (and rendered buoyant by), the said
steam, will ascend with considerable force, and carry along with it any other
moveable apparatus to which it may be attached, until the arrival of the said
vessel or bucket to such a place or position as shall permit the said steam to
escape. And I do dispose, arrange, and combine various other such buckets or
vessels as aforesaid along with the first-mentioned bucket or vessel, either by
fixing the same to the periphery of a wheel or to a circulating chain, or by
other convenient and suitable method, in such a manner that the assent of
any bucket or buckets containing steam shall regularly and successively cause
the other bucket or buckets to arrive at the proper situation for becoming
likewise charged with steam, and ascending in their turns. And I do declare
that my said method of producing a rotatory motion doth consist in the con-
struction, use, and application of the apparatus as here described and combined,
namely, of the usual steam boiler or boilers, and of the receptacle, with its
charge of hot water or other dense fluid, or of the combination of buckets, by
a revolving wheel, or by an endless chain and buckets, or by any other of
the well-known ways of applying buckets (in cases where the direct weight
and not the buoyancy of a fluid is used as the first mover); and that the
motion so produced in the shafts or arbors of the wheels, round which the
said buckets in all and every such case and cases must pass or revolve, in con-
sequence of their successive assent in the said heated water or dense fluid,
is the rotatory motion meant and intended to be produced by my said
new method. And, moreover, that I do apply the said motion or force to
mills and to other useful purposes by the usual and various means of con-
necting first movers with the several kinds of work intended to be done, all
which are too generally known and understood to be repeated in my present
Specification.
In witness whereof, I, the said Bryan Donkin, have hereunto set my
hand and seal, this Nineteenth day of August, in the year of our
Lord One thousand eight hundred and three.
BRYAN DONKIN. (L.S.)

page_text: AND BE IT REMEMBERED, that on the Nineteenth day of August, in
the year of our Lord 1803, the aforesaid Bryan Donkin came before our
said Lord the King in His Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stampt according
to the tenor of the Statutes made for that purpose.
AND BE IT REMEMBERED, that on the Nineteenth day of August, in
the year of our Lord 1803, the aforesaid Bryan Donkin came before our
said Lord the King in His Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stampt according
to the tenor of the Statutes made for that purpose.
Inrolled the Twentieth day of August, in the year of our Lord One
thousand eight hundred and three.