CERTAIN IMPROVEMENTS IN BOILERS, APPLICABLE TO STEAM ENGINES AND OTHER PURPOSES
Year: 1835

page_text: RICKARD'S SPECIFICATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
WILLIAM ROWLEY RICKARD, of Thistle Grove, Kensington, Engineer, send
greeting.
WHEREAS His present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date
the Twenty-eighth day of April, One thousand eight hundred and thirty-five,
in the fifth year of His reign, did for Himself, His heirs and successors, give
and grant unto me, the said Charles William Rowley Rickard, His especial
licence, full power, sole privilege and authority, that I, the said Charles William
Rowley Rickard, my exors, adñiors, and assigns, or such others as I, the said
Charles William Rowley Rickard, my exors, adñiors, or assigns, should at any
time 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,
my Invention of "CERTAIN IMPROVEMENTS IN BOILERS, APPLICABLE TO STEAM
ENGINES AND OTHER PURPOSES;" in which said Letters Patent is contained a
proviso that I, the said Charles William Rowley Rickard, shall cause a par-
ticular description of the nature of my said Invention, and in what manner
the same is to be performed, to be inrolled in His said Majesty's High Court
of Chancery within six calendar months next and immediately after the date of
the said in part recited Letters Patent, as in and by the same, reference
being thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Charles William Rowley Rickard, do hereby declare that the nature of my said
improvements, and the manner in which the same are to be performed, are fully

page_text: represented and explained in the Drawings hereunto annexed, and by the fol-
lowing description thereof, that is to say:-
Figure 1 is a longitudinal section of a boiler constructed with my said
invented improvements; Figure 2 a side elevation; and Figure 3 an end
clevation of the same, with parts of the outer casing left out in each; and
Figure 4 a top plan thereof, the same letters of reference being employed to
denote the same parts in each of those Figures. A, A, is the outer casing, and
B, B, the inner casing of the boiler and furnace, which casings are in the form
of a parallelogram, of which the length is two fifths greater than the breadth;
b, b, the space between the two casings, which diminishes gradually upwards
from about four and a half inches to three inches, and communicates at top
by the pipes m, m, with the steam chamber I. C, C, is the central or main
portion of the boiler, which is of an oval shape, having the same proportions as
the casings in respect to length and breadth. D1, D2, D3, and D', are four flat
chambers about three inches in depth, which project from the said central or
main portion of the boiler C, C, and communicate interiorly therewith, these
chambers extending at one end and alternately as far outwards as the inner casing
B; that is to say, D' and D³ extend at one end to the front inner casing, and
D³, and D', extend to the back inner casing; 1, 1, are caps for defending the end of
the chambers D, D, D, D, from the action of the fire; E, E, E, are hollow
pillars, six at each end of the boiler, which serve as supports to the flat cham-
bers D, D, D, D, and communicate interiorly therewith; F is the furnace,
and the ash-pit; G, G, a continious flue, which proceeds from the furnace
in a series of longitudinal bends around and between the water chambers C,
and D, D, D, D, and the pillars E, E, E, till it terminates in the chimney H.
I is the steam chamber; K, the safety valve; and L, the eduction pipe.
When water is introduced into the boiler it fills the whole of the spaces coloured
blue in the accompanying Drawings, namely, the central portion C, the flat
chambers D, D, D, D, the pillars E, E, E, and the space between the casings
b, b, completely surrounding the furnace and flues in all parts except that
portion of the front where the furnace door and ash-pit are situated, by which
arrangement all the heat given out by the said furnace and flues is at once
taken up by the adjoining water, (with the exception of what escapes by the
chimney or by the doors of the furnace and ash-pit,) and a greater quantity of
steam is generated in a given time than can be generated by the common
boilers, or by any other boiler of equal dimensions with which I am acquainted.
And having now particularly described the nature of my said invented
improvements, and the manner in which the same are to be performed, I
declare that I do not claim any of the parts of the apparatus herein-before

page_text: described, separately or otherwise, than and in so far as the same are newly
combined and arranged for the purpose of generating steam for the use of
steam engines, and other purposes. And I declare that what I claim as my
Invention is the particular combination of fire and water chambers represented
in the accompanying Drawings, and herein-before particularly described. And
I declare that the number of the said fire and water chambers may be encreased
or diminished according as the power or magnitude of the boiler is encreased
or diminished. And I further declare that though I consider that the forms
and dimensions herein-before assigned to the different parts of my said improved
boiler are the most advantageous than can be adopted, I reserve to myself full
power and liberty to make the same, or any of them, of any other forms and
dimensions which shall not involve any material departure from the general
plan and principle of the aforesaid arrangements. And such my invented
improvements 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 Dominion of Wales, or
Town of Berwick upon Tweed, I do hereby declare this to be my Specification
of the same, and that I do verily believe that 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 my said invented
improvements.
In witness whereof, I, the said Charles William Rowley Rickard, have
hereunto set my hand and seal this Twenty-sixth day of October, in the
year of our Lord One thousand eight hundred and thirty-five.
CHARLES WILLIAM (L.S.) ROWLEY RICKARD.
AND BE IT REMEMBERED, that on the Twenty-sixth day of October,
in the year of our Lord 1835, the aforesaid Charles William Rowley Rickard
came before our said Lord the King in His Chancery, and acknowledged the
Specification aforesaid, and all and everything 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.
Inrolled the Twenty-eighth day of October, in the year of our Lord One
thousand eight hundred and thirty-five.