IMPROVEMENTS IN STEAM GENERATORS
Year: 1872

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine,
Lake, & Co., Patent Agents, Southampton Buildings, London, for
the Invention of "IMPROVEMENTS IN STEAM GENERATORS."-A com-
munication from abroad by Elijah Weston, of Buffalo, New York,
United States of America.
Sealed the 14th March 1873, and dated the 11th October 1872.
PROVISIONAL SPECIFICATION left by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition,
on the 11th October 1872.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co.,
Patent Agents, Southampton Buildings, London, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN STEAM GENERATORS,"
a communication, to be as follows:-
This Invention consists in improvements in the steam generator for
which Letters Patent were granted to Clinton Edgcumbe Brooman,
bearing date the 31st day of May, A.D. 1869, No. 1674, the same being

page_text: a communication from Elijah Weston, of Buffalo, in the United States
of America. The essential features of this generator are, first, a smoke
combustion chamber in connection with the fire-place separated therefrom
by a bridge constituting part of the water space, a narrow space being
left for the passage of the flame between the top of the bridge and the
crown sheet; second, the peculiar construction of the firc-door for
admitting air to facilitate combustion and effect the consumption of the
smoke; and third, partitioning the water jacket about the fire space and
combustion chamber to promote the circulation of the water within the
boiler.
The present improvements relate first, to the combination of a pendant
water space with a combustion chamber; second, to combining with the
said bridge tubes extending through the same, whereby heated air and
a portion of the products of combustion may be transmitted directly
from the fire-place to the combustion chamber without passing over the
bridge; third, to the combination of the several improvements herein
described to constitute a perfected steam generator as a whole.
The said water space is projected into the upper part of the combustion
chamber. It is formed by deflecting downward the crown sheet over
the combustion chamber. Within this are placed two partitions con-
sisting of thin sheets of iron arranged and held fixedly each at a suitable
distance, say about one inch from its adjacent wall, to form a water
jacket at either side of the partitions, terminating upward a little below
the surface of the water and extending downward not quite to the
bottom of the said water space. By this arrangement an active cir-
culation of the water within the said pendant water space is effected, the
water in contact with the walls as it becomes heated rising into the
boiler, and that between the partitions not so much heated descending
and passing under their lower edges to supply its place. By this arrange-
ment the heating surface is extended and the making of steam greatly
promoted.
Rising vertically from the top of the bridge may be opened one, two,
or more passages connecting the water space around the bridge with the
water space above the crown sheet, through which the steam formed
within the bridge may ascend at once to the steam dome or space above
the crown sheet. Through these openings the circulation of the water
within the bridge is also promoted, thereby preventing the overheating
of the skin of the bridge.

page_text: . Small tubes are inserted in the bridge at any suitable distance above
the fire-grate, extending directly through from the fire space into the
combustion chamber. These tubes permit the intensely heated air to
pass directly from the fire into the combustion chamber, thereby pro-
moting the combustion of the smoke in the same.
These tubes may or
may not be employed at the option of the manufacturer.
Partitions are placed within the water space enveloping the fire-place
and combustion chamber, whereby a circulation of the water is effected,
the same being more fully described in the Specification of Letters Patent
herein-before referred to.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Robert Lake in the Great Seal Patent
Office on the 10th April 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London, send grecting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eleventh day of October, in the year
of our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Robert Lake, Her special licence
that I, the said William Robert Lake, my executors, administrators, and
assigns, or such others as I, the said William Robert Lake, my
executors, administrators, and assigns, should at any time agree with,
and no 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," a communication to me from abroad
by Elijah Weston, of Buffalo, New York, United States of America, upon
the condition (amongst others) that I, the said William Robert Lake,
my executors or administrators, 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 Scal

page_text: Patent Office within six calendar months next and immediately after the
date of the said Letters Patent.
NOW KNOW YE, that I, the said William Robert Lake, 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 following statement, reference being had to the accom-
panying Drawing forming a part of this Specification:-
This Invention consists in improvements in the steam generator for
which Letters Patent were granted to Clinton Edgcumbe Brooman,
bearing date the 31st day of May 1869, No. 1674, the same being a
communication from the said Elijah Weston. The essential features of
this generator are, first, a smoke combustion chamber in connection
with the fire-place, but separated therefrom, constituting part of the
water space, a narrow space being left for the passage of the flame
between the top of the bridge and the crown sheet; second, the peculiar
construction of the fire-door for admitting air to facilitate combustion
and effect the consumption of the smoke; and third, the partitioning
the water jacket about the fire space and combustion chamber to pro-
mote the circulation of the water within the boiler.
The present improvements relate, first, to the combination of a pendant
water space with a combustion chamber as particularly herein-after
described; second, to combining with the said bridge tubes extending
through the sapic, whereby heated air and a portion of the products of
combustion may be transmitted directly from the fire-place to the com-
bustion chamber without passing over the bridge; third, to the com-
bination of several improvements herein described to constitute a per-
fected steam generator as a whole.
The Drawings represent these improvements as applied to a locomotive
boiler.
Figure 1 is a longitudinal section on the line x, x, Figure 2; Figure 2
is a transverse section on the line y, y, Figure 1. Like letters indicate
corresponding parts in both Figures.
A is a fire box; B, the combustion chamber; C, the boiler space;
c, the water jacket which surrounds the fire box and combustion chamber;
c', the ordinary tubes of a locomotive boiler; and G, the bridge which
separates the fire space from the combustion chamber. D is a water

page_text: space projected into the upper part of the combustion chamber. It is
formed by deflecting downward the crown sheet over the combustion
chamber as shown. Within this space are placed two partitions e con-
sisting of thin sheets of iron arranged and held fixedly each at a suitable
distance, say about one inch from its adjacent wall. They form a water
jacket at either side of the partitions, terminating upward a little below
the surface of the water and extending downward not quite to the
bottom of the said water space. By this arrangement an active circu-
lation of the water within this pendant water space is effected, the water
in contact with the walls as it becomes heated rising into the boiler, and
that between the partitions not so much heated descending and passing
under their lower edges to supply its place. The heating surface is also
extended and the making of steam greatly promoted.
Rising vertically from the top of the bridge G may be opened one,
two, or more passages d, d, connecting the water space around the bridge
with the water space above the crown sheet, through which the steam
formed within the bridge may ascend at once to the steam dome or space
above the crown sheet. Through these openings the circulation of the
water within the bridge is also promoted, thereby preventing the over-
-heating of the skin of the bridge.
ff, are small tubes (any desired number may be used) inserted in
the bridge G at any suitable distance above the firc-grate, extending
directly through from the fire-place into the combustion chamber. These
tubes permit the intensely heated air to pass directly from the fire into
the combustion chamber, thereby promoting the combustion of the
smoke in the same. These tubes may or may not be employed at the
option of the manufacturer.
e, e, are partitions within the water space enveloping the fire-place
and combustion chamber, whereby a circulation of the water is effected,
the same being more fully described in the Specification of Letters
Patent, No. 1674, in the year of our Lord, 1869, herein-before referred
to.
Having thus fully described the said Invention as communicated to
me by my foreign correspondent, and the manner of performing the same,
I wish it understood that I claim,-
First. The pendant water space D containing the partitions e', e', in a

page_text: steam generator in combination with the combustion chamber B,
bridge G, and firo-placo A, substantially as set forth.
Second. The tubes f, f, leading directly across the bridge G from the
fire-place A into the combustion chamber B, substantially as set forth.
Third. The combination in a steam generator of the fire-place A, the
combustion chamber B, the bridge G, with or without the tubes f, ƒ, tho
partitions e, e, and the water space D, with the partitions e³, e', con-
structed and arranged as herein set forth and for the purpose specified.
In witness whereof, I, the said William Robert Lake, have here-
unto set my hand and seal, this Tenth day of April, in the
year of our Lord One thousand eight hundred and seventy-three.
Witness,
JAMES EDWARDS,
8, Southampton Buildings,
London.
W. ROBT. LAKE. (L.S.)

page_text: line 15 the words commencing at "second," and I strike out the whole
in tho
of line 16, and the words terminating with the word "smoke
17th line. I also substitute for the word " third" in the 17th lino the
word second; and on the same page, in the 21st line, I insert after
the word "with" the words circulating plates and; and I strike
out the words in the 22cd line commencing with "second," the whole
of the 23rd and 24th lines, and the 25th line to the word "bridgo; "
and I substitute for the word "third" in the 25th line the words
and second; and in page 6 I strike out the second claim, and in tho
fifth line I substitute for the word "third" the word second.
And in order that the effect of the propoed Disclaimer and Memo-
randum of Alteration may be clearly understood, I annex a copy of the
Specification as it will appear after the said Disclaimer and Memorandum
of Alteration have been made, omitting the introductory and concluding
clauses of the said Specification.
"WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eleventh day of October, in the
year of our Lord One thousand eight hundred and seventy-two, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said William Robert Lake, Her
special licence that I, the said William Robert Lake, my executors,
administrators, and assigns, or such others as I, the said William Robert
Lake, my executors, administrators, and assigns, should at any timo
agree with, and no others, from time to time and at all times there-
after 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 Inven-
tion for "IMPROVEMENTS IN STEAM GENERATORS," a communication to mo.
from abroad by Elijah Weston, of Buffalo, New York, United States of
America, upon the condition (amongst others) that I, the said William
Robert Lake, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and scals, 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,

page_text: the combustion chamber, as shewn. Within this space are placed two
partitions e consisting of thin sheets of iron arranged and held fixedly
cach at a suitable distance, say, about one inch from its adjacent wall.
They form a water jacket at either side of the partitions, terminating
upward a little below the surface of the water, and extending downward
not quite to the bottom of the said water space. By this arrangement
an active circulation of the water within this pendant water space is
effected, the water in contact with the walls as it becomes heated rising
into the boiler, and that between the partitions, not so much heated,
descending and passing under their lower edges to supply its place.
The heating surface is also extended and the making of steam greatly
promoted.
Rising vertically from the top of the bridge G may be opened, one,
two, or more passages d, d, connecting the water space around the bridge
with the water space above the crown sheet, through which the steam
formed within the bridge may ascend at once to the steam dome or space
above the crown sheet. Through these openings the circulation of the
ater within the bridge is also promoted, thereby preventing the over-
heating of the skin of the bridge.
faro small tubes (any desired number may be used) inserted in the
bridge G at any suitable distance above the fire-grate, extending directly
through from the fire-placo into the combustion chamber. These tubes
permit the intensely heated air to pass directly from the fire into tho
combustion chamber, thereby promoting the combustion of the smoke in
the same. These tubes may or may not be employed at the option of 1
the manufacturer.
e, e, are partitions within the water space enveloping the fire-place
and combustion chamber, whereby a circulation of the water is effected,
the same being more fully described in the Specification of Letters Patent
No. 1674, in the year of our Lord 1869, herein-before referred to.
Having thus fully described the said Invention, as communicated to
me by my foreign correspondent, and the manner of performing the samo,
I wish it understood that I claim,—
First. The pendant water space D containing the partitions e¹, e', in a
steam generator, in combination with the combustion chamber B, a
bridge G, and fire-placo A, substantially as set forth.

page_text: Second. The combination in a steam generator of the fire-place A, the
combustion chamber B, the bridge G, with or without the tubes f, f, the
partitions e, e, and the water space D, with the partitions e¹, e¹, con-
structed and arranged as herein set forth and for the purpose specified."
In witness whereof, I, the said Elijah Weston, have hereunto set
my hand and seal, this Twenty-first day of May, in the year of
our Lord One thousand eight hundred and seventy-four.
MOODY B. SMITH.
To the Commissioners of Patents for Inventions.
I hereby grant my fiat, giving leave to the above-named Elijah
Weston, of Buffalo, New York, United States of America, assignee of
the within-named Patent granted to William Robert Lake, to file in the
Great Seal Patent Office, with the Specification to which the same relates,
the above written Disclaimer and Memorandum of Alteration.
JOHN HOLKED.