IMPROVEMENTS IN STEAM GENERATORS
Year: 1874

page_text: LETTERS PATENT to Alfred Vincent Newton, of the Office for Patents,
66, Chancery Lane, in the County of Middlesex, Mechanical
Draughtsman, for the Invention of " IMPROVEMENTS IN STEAM
GENERATORS." -A communication from abroad by William Edward
Kelly, of New Brunswick, in the State of New Jersey, United
States of America.
PROVISIONAL SPECIFICATION left by the said Alfred Vincent
Newton at the Office of the Commissioners of Patents, with his
Petition, on the 12th March 1874.
I, ALFRED VINCENT NEWTON, of the Office for Patents, 66, Chancery
5 Lane, in the County of Middlesex, Mechanical Draughtsman, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN STEAM
GENERATORS," to be as follows:—

page_text: inclined tubes arranged to connect at their one or forward end with a
chamber common to each are used, and in which the tubes are longi-
tudinally divided to promote circulation, the fire or gaseous products of
combustion acting upon the outsides of the tubes. Said boiler may be
composed of any number of such sectional constructions arranged side
by side, and the Invention under this first general division consists in a
longitudinal partition or dividing plate within each tube arranged to
separate the latter into upper and lower sections in communication at
the back end of the tube, in combination with pockets bending upwards
within the chamber at the front end of the tubes, whereby a very
perfect circulation is obtained, and water carried up by the steam is
returned for recirculation through the tubes, and a rapid generation of
steam produced. Furthermore the partition plates in said tube are so
secured therein in connection with the pockets that said plates are held
securely in position in every direction with provision for their expansion
and contraction, as well as providing for their ready attachment or
detachment and secure hold in proper relation with cach other of the
tubes, partition plates, and pockets. This is effected by bending up the
ends of the plates and clamping them by their bent up ends to the
pockets.
**J
The Invention under its other or second general division may either
be used as an improvement in tubular boilers of sectional construction,
or as an improvement in the fire-box, sides, or surfaces of boilers, and it
relates to those water or steam gencrating combinations in which a
series of horizontal or inclined tubes connecting at their one end with a
chamber common to cach are used, and in which supplementary pipes
or tubes arc employed to promote circulation. Such portion of the
Invention consists in a certain combination of tubes in couplets one
outside of the other, and arranged so as to be unequally exposed to the
action of the fire, with a divided front end chamber to the several tubes,
and independent back connections for each couplet of tubes, whereby a
perfect circulation is kept up. Such portion of the Invention also
includes a novel and advantageous construction of the back connections
to each couplet of tubes. The tubes at their back ends are screwed
cach into half boxes cast with a water way through them. The contact
faces of these half boxes are packed, and a coupling band which embraces
them is tightened up by wedges driven between the boxes and the
band.
.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Alfred Vincent Newton in the Great Seal Patent
Office on the 11th September 1874.
}
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALFRED
VINCENT NEWTON, of the Office for Patents, 66, Chancery Lane, in the
County of Middlesex, Mechanical Draughtsman, send greeting.
→
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twelfth day of March, in the
year of our Lord One thousand cight hundred and seventy-four, in
the thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Alfred Vincent Newton,
Her special license that I, the said Alfred Vincent 'Newton, my exc-
cutors, administrators, and assigns, or such others as I, the said Alfred
Vincent Newton, my exccutors, 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," (being a communi-
cation to me from abroad by William Edward Kelly, of New Brunswick,
in the State of New Jersey, United States of America), upon the
condition (amongst others) that I, the said Alfred Vincent Newton,
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 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 Alfred Vincent Newton, .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 Drawing
hiereunto annexed and to the letters and figures marked thercon (that
is to say):
This Invention may be divided under two heads the first of which

page_text: :
inclined tubes arranged to connect at their one or forward end with a
chamber common to each are used, and in which the tubes are longi-
tudinally divided to promote circulation, the fire or gaseous products of
combustion acting upon the outsides of the tubes. Any number of
these sectional constructions arranged side by side may be combined to
constitute a boiler according to the capacity of boiler required. The
improvements under the first head of the Invention consist in a longi-
tudinal partition or dividing plate within each tube arranged to separate
the latter into upper and lower sections in communication at the back
end of the tube in combination with pockets bending upwards within
the chamber at the front end of the tubes, whereby a very perfect
circulation is obtained, and water carried up by the steam is returned
for recirculation through the tubes and a rapid generation of steam
produced. Furthermore the partition plates in said tubes are so secured
therein in connection with the pocket that said plates are held securely
in position in every direction with provision for their expansion. and
contraction as well as providing for their ready attachment or detach-
ment and secure hold in proper relation with each other of the tubes,
partition plates and pockets.
The second head of the Invention relates to an improvement that may
either be used as an improvement in tubular boilers of sectional con-
struction, or as an improvement in the fire-box, sides, or surfaces of
boilers, and it relates to those water or steam generating combinations
in which a series of horizontal or inclined tubes, connecting at their one
end with a chamber common to each are used, and in which supple-
mentary pipes or tubes are employed to promote circulation. Such
portion of the Invention consists in a certain combination of tubes in
couplets one outside of the other, and arranged so as to be unequally
exposed to the action of the fire, with a divided front end chamber to
the several tubes, and independent back connections for each couplet of
tubes, whereby a perfect circulation is kept up. Such portion of the
Invention also includes a novel and advantageous construction of the
back connections to each couplet of. tubes.
Having thus specified the object.or. objects and nature of the Inven-
tion, its description will be proceeded with in reference to the accom-
panying Drawing.
Fig. 1 represents a front elevation of a steam generator constructed in

page_text: accordance with the first head of the Invention, and Fig. 2, a longi-
tudinal vertical section thereof; Fig. 3 is a partial longitudinal vertical
section of the same, shewing the tubes with partition plates, pockets,
and upright chamber with which the tubes connect at their forward
ends, and Fig. 4 is a horizontal or approximately horizontal section in
part of the same through the upright or main chamber in front, and
showing two vertical rows of the horizontal or inclined tubes as con-
necting with the one chamber, but only a single vertical row of such
tubes, or any number of rows may connect with cach main front or
upright chamber; Fig. 5 is a longitudinal vertical section upon a larger
scale of the forward end of one of the tubes together with the partition
plate in said tube, the pocket with which it connects and the clamp for
securing the plate to the pockets; Fig. 6 is a transverse section of the
same on the line x, x, in Figure 5; Fig. 7, a face view of the clamp or
bar by which the partition plate is held to the pocket, and Fig. 8 a
transverse section of the same.
Fig. 9 represents a vertical section in part of one row of tubes with
front end chamber attachment and back connection in accordance with
the second general division of the Invention, the structure represented
being only a single row or section of a tubular boiler made up of any
desired number of such rows arranged side by side, but the same com-
bination of parts might be used in the construction of the sides of fire-
boxes of steam boilers. Fig. 10 is a horizontal or approximately hori-
zontal section of the same in part through the upright or main chamber
with which the tubes connect at their one or forward end; Fig. 11 is a
vertical longitudinal section upon a larger scale of one of the back
connections to each couplet of tubes; and Fig. 12 a transverse vertical
section thereof.
Referring in the first instance to Figures 1, 2, 3, 4, 5, 6, 7, and 8 of
the Drawing, A. is the upright or main chamber in front of the tubes B,
which are arranged one above the other in each vertical row (when therċ
is more than one row) and are screwed at their forward ends into nozzles
projecting from the back side of the chamber A. These tubes B arè
closed at their rear ends by screw caps C.. The water may be admitted
to the boiler by an inlet b at or near the bottom of each chamber A, and
the storm as conorated is nassed off into a receiving duim on ολα οπλοκα

page_text: that caught by or deposited from the steam in the pockets E is caused
to circulate down or backwards over the tops of the partition plates D to
take the place of the steam generated in the hotter or lower spaces of
the longitudinally divided tubes, and made to pass upwards or forward
again along the under surface of the partition plates. This produces a
thorough circulation as well as rapid and perfect gencration of the
the longitudinally divided tubes, and made to pass upwards or forward
again along the under surface of the partition plates. This produces a
thorough circulation as well as rapid and perfect gencration of the
steam.
:
Referring in the next instance to Figures 9, 10, 11, and 12 of the
Drawing, A¹, A², represent the front upright or main end chamber of a
boiler constructed in accordance with the second head of the Invention,
and with which chamber the tubes connect at their forward. ends. This
chamber to which the feed water is admitted by an inlet 6 below, and
from which the steam is passed by an outlet c above, is divided vertically.
or throughout the greater portion of its length by a partition. S. into
front and back sections A³, A³, and preferably also by a horizontal
partition d, into an upper section or steam space which is in connection
by the upper couplet of tubes with the back section A² of the main
chamber or upright.
.
B1, B2, represent couplets, of tubes arranged to screw at their forward
ends into the main chamber, and so that the one tube B' of each couplet
connects with the back section A² of the main chamber; while the other
tube B² of the several couplets, except the uppermost onc, connects
through a socket or tubular connection g¹ with the front section A of
the main chamber. These tubes B¹, B³, are arranged outside of each'
other, the tube B², which may be smaller than the -tube B¹, being under
cover as it were of the latter tube and furthest removed from the action
of the fire, so that the tubes B2 which connect with the tubes B¹ in the
rear, being cooler, serve to keep up a circulation of the water backwards
through them to the hotter or steam generating tubes B2. In this way
a rapid and perfect generation of the steam is established and a thorough
circulation of the water obtained. The arrangement here represented is
such that the water circulating tubes B2 lie above the tubes B', which
arrangement is adapted to the application of the Invention to the boiler
itself, the fire playing from underneath the tubes. When, however, the
Invention is applied to the fire-box side of a boiler, then the tubes B
may be arranged alongside the tubes B', that is, between the latter and
the wall...
- C

page_text: and secured at their meeting faces by an outside clamp essentially as
described and shown in Figures 9, 11, and 12 of the Drawing.
In witness whereof, I, the said Alfred Vincent Newton, have here-
unto set my hand and seal, the Eleventh day of September,
in the year of our Lord One thousand cight hundred and seventy-
four.