A NEW ENGINE FOE COMMUNICATING POWER, TO ANSWER THE PURPOSES OF A STEAM ENGINE
Year: 1826

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ADOLPHE
EUGENE DE ROSEN, of Princes Street, Cavendish Square, in the County of
Middlesex, a Count of the Swedish Empire, send greeting.
WHEREAS I, the said Adolphe Eugene de Rosen, in consequence of a
communication made to me by John Ericsson, of Terntland, in Sweden, (a
Foreigner residing abroad,) am in possession of an Invention of a new engine
for communicating power, to answer the purposes of a steam engine;
and whereas His present most Excellent Majesty King George the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date
at Westminster, the First day of August, in the seventh year of His reign,
did, for Himself, His heirs and successors, give and grant unto me, the said
Adolphe Eugene de Rosen, His especial licence that I, the said Adolphe
Eugene de Rosen, my exors, adiñors, and assigns, or such others as I, the
said Adolphe Eugene de Rosen, my exors, adññors, or assigns, should at any
tine agree with, and no others, from time to time and at all times during the
term of years therein expressed, should and lawfully might make, use, exercise,
and vend, within England, Wales, and the Town of Berwick-upon-Tweed, and
also in all His said Majesty's Colonies and Plantations abroad, the said Inven-
tion of "A NEW ENGINE FOE COMMUNICATING POWER, TO ANSWER THE PURPOSES OF
A STEAM ENGINE;" in which said Letters Patent is contained a proviso obliging
me, the said Adolphe Eugene de Rosen, by an instrument in writing under
my hand and seal, particularly to describe and ascertain the nature of my said
Invention, and in what manner the same is to be performed, and to cause the

page_text: same to be enrolled in His said Majesty's High Court of Chancery within six
calendar months next and immediately after the date of the said recited
Letters Patent, as in and by the same, reference being thereunto bad, will
more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Adolphe Eugene de Rosen, do hereby declare the nature of the said Invention
to consist in an engine so constructed that the air used to feed the fire in the
furnace of the said engine, together with the gases produced from the fuel
of which the said fire is made or used in an expended and heated state, to act
directly, as they leave the furnace, either upon an ordinary piston in a cylinder,
or else to act on a surface or body of water to generate steam for the purpose
of acting in such cylinder, in order to communicate power; and in further
compliance with the said proviso, I, the said Adolphe Eugene de Rosen, do
hereby describe the manner in which the said Invention is to be performed by
the following description thereof, reference being had to the Drawing annexed,
and to the figures and letters marked thereon (that is to say):-
DESCRIPTION OF THE DRAWING.
A is an air cylinder or blowing apparatus, fitted with valves, marked a, and
a piston and rod marked B and C. This blowing apparatus feeds the furnace
with atmospheric air through the pipe E, E, as the piston is in motion,
whether up or down. F is a furnace, inclosed in a double case, the better to
prevent the radiation of heat; D is the ashpit; inside of this furnace is
placed a spiral pipe, cylinder, or worm, shown in section in this Drawing; G
is its upper end and H is its lower end. It will be observed that the upper
end opens into the furnace and the lower end opens out of the furnace into
the pipe K; this pipe K may lead either directly into a cylinder to move a
piston for the purpose of communicating power, or it may lead into a boiler
to generate steam for that purpose, as hereafter to be explained; but as this
furnace constitutes one principal part of the said Invention, I will now proceed
to describe the effect produced by the application of such a furnace to the
purposes of communicating power as follows, that is to say:-
A fire being lighted in the furnace F, and atmospheric air being forced into
the furnace, under the fire bars r, r, r, by means of the blowing apparatus A,
through the pipes E, E, the fire is fed, ignition kept up, and gas evolved,
which gas, together with the air which passes through tho fire, escapes in an
expanded and heated state through the spiral pipe or worm, till it reaches the
end H, by which time all the carbon and other matter which is at first drawn
into the pipe with it becomes consumed, and the air and gas so escaping at

page_text: the end H of the said pipe will be in a sufficiently rarified and expansive state
to be applied at once to any proper cylinder with a piston and rod for
communicating power.
In further description of the furnace, as shewn by this Drawing, we should
state that L is a hopper or place for feeding the furnace F with coals; M is
a sliding door, which shuts tight while the upper door N of the same kind is
opened, ard coals are put into the space L, between the two doors; the upper
door N is then closed again, and the lower door M being opened, of course the
coals fall down into the furnace; the lower door M is then again shut, and the
furnace remains in the state shown in the Drawing. P, P, is a reservoir,
placed in that situation merely for the purpose of taking advantage of the
radiating heat from the upper part of the furnace to heat the water which
afterwards is led into a boiler or steam case, when such is used, and which
boiler or steam case constitutes a second part of the said Invention, as follows,
that is to say:-
R, R, R, is a boiler, fitted with shelves or shoots, as here described, by
which water poured on to the upper shelf flows downward from shelf to
shelf till it reaches the bottom shelf, by which time the whole should be con-
verted into steam; Q is a pump which feeds the boiler from the reservoir P, P,
and from which the water flows through the pipe S on to the first or upper shelf;
K is a pipe by which the heated air aud gases which are generated in, pass
through, and escape from, the furnace, are let in upon the various surfaces of
water contrived in the boiler, thereby generating steam from the said water; T
is a pipe for the steam so generated to escape at, and may be designated by the
ordinary appellation of the steam pipe. It is evident that the steam from
this pipe may be allowed to enter into a cylinder, for the purpose of moving
an ordinary piston and rod for communicating power, or into any other place
where such steam may be required.
Now whereas I claim as the said Invention, first, an engine, such as
herein-before described, whereby the atmospheric air used to feed a previously
created combustion is afterwards used, together with the gases evolved by
such combustion, in an expansive and rarified state, either to act in a cylinder
immediately on a piston and rod for the purpose of communicating power, or
else in a boiler or steam case to generate steam or increase the temperature
of steam which may have been otherwise generated for the purpose last
aforesaid; and secondly, I claim as the said Invention, a boiler or steam case,
such as is herein-before described, whereby the heat used to generate or raise
the temperature of steam therein, as the case may be, is conveyed in a current
of heated air and gases immediately upon the surface of or into a body of

page_text: water where steam is to be generated, or into the body of the vapour itself
where the temperature of steam which has been previously generated requires
to be raised for the purpose of being employed to communicate power; and
such an engine for communicating power, involving such principles as aforesaid,
both as to the 1st and 2nd part of my said claim, being, to the best of my
knowledge and belief, entirely new, and never before used within that part
of His said Majesty's United Kingdom of Great Britain and Ireland called
England, His said Dominion of Wales, or Town of Berwick-upon-Tweed, nor
in any of His said Majesty's Colonies or Plantations abroad, I do hereby
declare this to be my Specification of the same, and that I do verily believe this
my said Specification doth comply, in all respects, fully and without reserve
or disguise, with the proviso in the said herein-before in part recited Letters
Patent contained; wherefore I hereby claim to maintain exclusive right and
privilege to the said Invention.
De
A. L. V. KUSEN. (L.S.)
AND BE IT REMEMBERED, that on the First day of February, in the
year of our Lord 1827, the aforesaid Adolphe Eugene de Rosen 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 stamped according
to the tenor of the Statute made for that purpose.