IMPROVEMENTS IN STEAM GENERATORS AND IN FIRE-BARS EMPLOYED THEREIN
Year: 1861

page_text: LETTERS PATENT to Richard Archibald Brooman, of 166, Fleet Street, in
the City of London, Patent Agent, for the Invention of "IMPROVEMENTS
IN STEAM GENERATORS AND IN FIRE-BARS EMPLOYED THEREIN."-A com-
munication from abroad by Alexandre Friedmann and Emile d'Erlanger,
both of Paris, France.
Sealed the 24th June 1862, and dated the 27th December 1861.
PROVISIONAL SPECIFICATION left by the said Richard Archibald Brooman
at the Office of the Commissioners of Patents, with his Petition, on the
27th December 1861.
I, RICHARD ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of.
London, Patent Agent, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN STEAM GENERATORS AND IN FIRE-BARS EMPLOYED THEREIN,"
(communicated to me from abroad, by Alexandre Friedmann and Emile
d'Erlanger, both of Paris, France,) to be as follows:-
This Invention is for improvements upon a former Invention communicated
by the said Alexandre Friedmann and Emile d'Erlanger, and for which
Provisional Protection, No. 2778, was granted to me on the 5th of November
last.
The first improvement consists in a new form of joint for closing the
aperture made in the fire-box for connecting the water vessel in the fire-box
with the water and steam spaces in the boiler.

page_text: The second improvement consists in carrying the pipes and the joints, whereby
communication is effected between the said water vessel and the boiler proper
outside of the fire-box, and in providing plugs which admit of removal for
allowing the insertion of tools for cleansing the interior of the water vessel.
The third improvement consists in an arrangement of fire-bars in steam
boiler furnaces.
The joint consists of a plate or tube with double flanges. The plate or
length of the tube occupies the space between the fire-box and the outer
skin; one of the flanges is rivetted to the fire box, and the other flange to
the skin. The water vessel is connected to the outer flange, and is inde-
pendent of the fire-box, with the sides of which it does not come in contact,
and, as before stated, the connecting joints to the boiler proper are all made
outside of the fire-box. The fire-bars are composed of fixed and moveable
bars, the ends of which overlap. The overlapping ends are supported upon
one cross bar. The other ends of the movable bars are held upon another
support, which is connected by plates to the cross bar in such manner that
they may be made to pivot around the cross bar. This pivotting is effected
by means of levers united to a vertical rod under control of the attendant.
Furnace bars arranged as before described, possess the advantages of exposing
along their whole length spaces for the admission of air between them, while
the movable part allows of the discharge from the fire of the clinkers and
other residue when required.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Archibald Brooman in the Great Seal Patent Office
on the 27th June 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of London, Patent
Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of December, in the year of our
Lord One thousand eight hundred and sixty-one, in the twenty-fifth year of
Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said Richard Archibald Brooman, Her special licence that I,
the said Richard Archibald Brooman, my executors, administrators, and
assigns, or such others as I, the said Richard Archibald Brooman, my
executors, administrators, and assigns, should at any time agree with, and no

page_text: 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 "IMPROVEMENTS IN STEAM GENERATORS AND IN
FIRE-BARS EMPLOYED THEREIN," (communication from Alexandre Friedmann
and Emile d'Erlanger, both of Paris, France,) upon the condition (amongst
others) that I, the said Richard Archibald Brooman, my executors or admi-
nistrators, by an instrument in writing under my, 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 I, the said Richard Archibald Brooman, do hereby
declare the nature of the said Invention, and in what manner the same is to be.
performed, to be particularly described and ascertained in. and by the fol-
lowing statement thereof, reference being had to the Drawings hereunto
annexed, that is to say:
This Invention is for improvements upon a former Invention, communicated
by the said Alexandre Friedmann and Emile d'Erlanger, and for which Letters
Patent were granted to me, No. 2778, dated. the 5th of November 1861..
The first improvement consists in a new form of joint for closing the
aperture made in the fire-box for connecting the water vessel in. the fire-box
with the water and steam spaces in the boiler.
The second improvement consists in carrying the pipes and the joints,
whereby communication is effected between the said water vessel and the
boiler proper outside of the fire-box, and in providing plugs which admit of
removal for allowing the insertion of tools for cleansing the interior of the
water vessel.
The third improvement consists in an arrangement of fire-bars in steam
boiler furnaces.
The joint consists of a plate or tube with double flanges. The plate or
length of the tube occupies the space between the fire-box and the outer skin;
one of the flanges is rivetted to the fire box, and the other flange to the skin.
The water vessel is connected to the outer flange, and is independent of the
fire-box, with the sides of which it does not come in contact, and, as before
stated, the connecting joints to the boiler proper are all made outside of the
fire-box. The fire-bars are composed of fixed and movable bars, the ends of
which overlap. The overlapping ends are supported upon one cross bar. The
other ends of the moveable bars are held upon another support, which is con-

page_text: nected by plates to the cross bar in such manner that they may be made to
pivot around the cross bar; the pivotting is effected by means of levers united
to a vertical rod under control of the attendant. Furnace bars arranged
as before described, possess the advantages of exposing along their whole
length spaces for the admission of air between them, while the movable part
allows of the discharge of the fire of the clinkers and other residue when
required.
Figure 1 of the accompanying Drawings is a longitudinal section of a
tubular steam generator with the water vessel applied to it; this water vessel
is independent of the fire-box in which it is placed, and where it is maintained
by connections or couplings outside the boiler, communication between it and
the generator being preserved by pipes extending outside from the top to the
bottom of the fire-box; Figure 2 is a horizontal section, taken through the
lines A, B, and C, D, of Figure 1; Figure 3 is a view, partly in elevation and
partly in section of the rear end of the fire-box, showing the internal and
external arrangement thereof; Figure 4 is a rear view of the fire-box, ready
to receive the water vessel; Figures 5 and 6 are two vertical sections of a
steam generator, with a different water vessel secured by a joint, as hereafter
described; Figure 7 is a detached view of this joint with frame. F is the
water vessel, its shape and construction are similar to that described in the
Specification of the Patent, herein-before referred to, as will be seen by refer-
ence to Figures 1, 2, and 3. To introduce this water vessel into the fire-box,
say, of a locomotive, an aperture o, Figure 4, is formed in the wall; the water
vessel F is introduced from the bottom supported by a cross piece s, Figure 3,
and fixed to the outside by means of angle irons. The hinged joint for closing
the aperture o, which is formed through the double walls of the fire box is
composed of two flanges or angle pieces e and i and frame C, seen detached at
Figure 7 as well as in Figures 1 and 2. The external flange e is first rivetted
to the fire-box, then the other flange i to the skin; the frame C is now placed
so that it may be rivetted between the flanges e and i. To the exterior of the
water vessel F two ends of the pipes b, 61, are rivetted; to the branch ba
tube t, Figures 1, 2, and 3, is connected, by which water from the boiler
passes to the water vessel F; to the other branch 6¹ a tube t¹ is united, by
which steam generated in the water vessel F escapes into the boiler. The
joint b is provided with a plug a', by withdrawing which, as well as the plugs a,
access can be had to the water vessel F for cleaning it; R is a discharge tap,
which also serves for cleaning the water vessel F by the pressure of steam in
the generator; p is a door, whereby the furnace is charged with fuel. The
improvements in the fire-bars are shewn at Figures 1, 2, and 3; 9, 9, are

page_text: fixed bars, and g', g¹, are movable bars. The bars of the grate overlap and
rest on the shaft d, and on the two supports m and n. The support n and the
shaft & are united by two cross bars q, and thereby form a frame pivoted about
the axis of the shaft d. This pivotting is effected by means of the shaft u
and the rod w, which transmits its motion to the cross bar q by means of the
levers and connecting pieces y. The movable bars g¹ may be inclined, as
required, without altering the continuity of the surface of the grate. The
movable grate g¹ at the same time serves to discharge the fire. The incli-
nation of the grate and its distance from the water vessel F is regulated by
the nature of the fuel and the size of the fire-place.
That part of this Invention which relates to the joints and to the effecting
of a communication between the water vessel and the boiler by means of
external tubes without any joint inside, and that part in which the grate is
described as formed in two parts with the bars overlapping one another and
pivotted, are applicable to any other furnace containing any other description of
water vessel than that herein-before described. An illustration of this is shewn
at Figures 5 and 6, where a fire-place, known as "Tembrinck's," is shewn
modified, and fitted with joints and tubes for effecting a communication with
the water vessel and boiler, as before described. This furnace has a water vessel
introduced at the bottom, as shown at B; it is kept in position by four pipes,
which are placed inside the fire-box, and which at the same time form a com-
munication between the water vessel and the generator. Now, according to
this Invention, two apertures corresponding with the section of the water
vessel B, Figure 5, are formed in the double wall of the fire-box of the
locomotive; the two apertures being closed by the joints, before described,
consisting of the two flanges e and i, with frame C, as shewn at Figure 7.
One side of the water vessel B is closed by a plate s¹, Figure 6, two ends or
joints, one bat bottom, the other 6¹ at top are rivetted to this plate. Two
external pipes t, t¹, branch off from the joints b, b', each of which enters the
steam space in the boiler. The result of this arrangement, which is similar
to that described with reference to Figures 1, 2, and 3, is that a free circula-
tion between the water vessel and the generator is maintained by external
pipes without any internal joints. The water vessel is with equal facility
cleaned by means of the plugs or stoppers a and a', which are fitted to the
joints b, b¹. Although not shewn in the Drawing the grate arrangement
described with reference to Figures 1, 2, and 3, is equally applicable to that
just described with reference to Figures 5 and 6.
And having now described the nature of the said Invention, and in what
manner the same is to be performed, I declare that I do not limit myself to

page_text: the particular arrangement of steam generator herein-before described, the
Invention being applicable to generators generally where the fire-box con-
tains a water vessel, whether it be constructed in the manner described in the
Specification of the Letters Patent herein-before referred to, or according to
any other arrangement where a water vessel is employed for the purpose of
increasing the heating surface of the said generator; but I claim as the
"Improvements in Steam Generators and in Fire-bars employed therein,❞—
First, the employment of joints for closing apertures constructed in manner
and for the purposes herein-before described and illustrated in the accompanying
Drawings.
Second, effecting communication between the water vessel in the fire-box
and the generator by means of tubes or pipes carried outside the fire-box
without any internal joint in the furnace, together with the employment of
plugs, which when removed allow the water vessel to be cleaned, all as
herein-before described with reference to the accompanying Drawings.
Third, the arrangement of fire-bars, as herein-before described and illus-
trated in the accompanying Drawings.
In witness whereof, I, the said Richard Archibald Brooman, have here-
unto set my hand and seal, this Twenty-seventh day of June, One
thousand eight hundred and sixty-two.
D A PROOMANT