CERTAIN IMPROVEMENTS IN STEAM EN- GINES, BEING FURTHER IMPROVEMENTS ON MY FORMER PATENTS FOR 'AN IMPROVED METHOD OF ACTING UPON MACHINERY
Year: 1818

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
MOULT, of Bedford Square, in the County of Middlesex, 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 Fifteenth day of
January, in the fifty-eighth year of His reign, give and grant unto me, the
said William Moult, my exors, adñiors, and assigns, His special licence, full
power, sole privilege and authority, that I, the said William Moult, my exors,
adiñors, and assigns, should and lawfully might, during the term of years therein
mentioned, make, use, exercise, and vend, within England, Wales, and and the
Town of Berwick-upon-Tweed, and also in all His Majesty's Colonies and
Plantations abroad, my Invention of "CERTAIN IMPROVEMENTS IN STEAM EN-
GINES, BEING FURTHER IMPROVEMENTS ON MY FORMER PATENTS FOR 'AN IMPROVED
METHOD OF ACTING UPON MACHINERY;'" in which said Letters Patent there is
contained a proviso that if I, the said William Moult, shall not particularly
describe and ascertain the nature of my said Invention, and in what manner
the same is to be performed, by an instrument in writing under my hand
and seal, and cause the same to be inrolled in His Majesty's High Court of
Chancery within six calendar months next and immediately after the date
of the said Letters Patent, that then the said Letters Patent; and all liberties

page_text: and advantages whatsoever thereby granted, shall utterly cease, determine,
and become void, as in and by the same, relation being thereunto had, may
more fully and at largo appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
William Moult, do hereby declare that the nature of my said Invention,
and the manner in which the same is to be performed, are particularly de-
scribed and ascertained in and by the following description thereof (that is to
say):
My improvements are applicable to that part of my said former Inventions
which relates to the use of steam vessels fastened at the end of a working
hollow beam, as mentioned in my Specification, inrolled in His Majesty's High
Court of Chancery on the Thirteenth day of February, One thousand eight
hundred and seventeen, instead of which I use a circular hollow tube, with a
stop in the inside of the same at the top thereof; the mercury or any other
ponderous fluid is inclosed in this tube, and the steam is introduced alternately
on each side of such stop between that and the mercury other ponderous
fluid by pipes connected with a cock similar to the one in, described in my
said former Specification, which is placed in the centre of such machinery,
by which steam the mercury or other ponderous fluid and the stop are forced
in opposite directions, and the tube is made to move through part of the
circle on one side until the steam is introduced on the other side, and then
it is made to move in a similar manner in the contrary direction. The steam
is introduced alternately by the motion of the machine striking with tappits
fastened to a semicircular bar moving with the circular tube; the key of the
cock by which it is turned was to supply the steam to each side alternately,
and at the same time to allow the waste or used steam to pass off on the
opposite side. The shape of the cock is described in my said former Specifi-
cation. This machine may be made to act upon any machinery to which it
is applied by means of a rod and crank fastened to the centre shaft thereof,
and connected with a crank and wheel, as described in my said former Specifi-
cation. I also use my said machine for the purpose of producing a circular
motion, which is effected by introducing steam into a circular hollow tubo
from the centre of such circle by means of hollow pipes connected with a
cock in form similar to the one described in my Specification bearing date
the Fourteenth day of August, One thousand eight hundred and sixteen, each
of which pipes opens into the circular hollow tube between the mercury or
other ponderous fluid and a valve shutting upwards, by which the said tube
is forced round, the mercury or other ponderous fluid remaining in the lower
part thereof. The steam is discharged through the same pipe in its passage

page_text: round the circle by an aperture in the cock connected with a waste pipe, as
described in my said former Specification.
In witness whereof, I, the said William Moult, have hereunto set my
hand and scal, this Fourteenth day of July, in the year of our Lord
One thousand eight hundred and eighteen.