IMPROVEMENTS IN STEAM BOLLERS
Year: 1887

page_text: Date of Application, 25th July, 1887
Complete Left, 4th Apr., 1888
Complete Accepted, 25th May, 1888
1 JAMES BALDWIN of Devonshire Brass Works, Keighley in the County of York,
Engineer, do hereby declare the nature of this invention for "IMPROVEMENTS
IN STEAM BOLLERS to be as follows:-
My Boiler is a Sectional Ring Boiler made multitubular with pockets and can be
built up in the form of a Lancashire, or Cornish, or Return Tube Marine type of
Boiler. It is made in sections my great object being to obtain a Boiler which
will stand working at high pressures, combined also with great heating surface and
good circulation of water.
The land type 1 propose making as follows:-Each section is formed by having
Rings, or Tubes bent in Ring form, welded or riveted together with a pocket placed
halfway down (or this pocket may be placed in any other position as may be con-
sidered desirable) inside the Ring forming tube plates.-Through these pockets tubes
pass screwed into plates or otherwise and on the bottom of these pockets there is a
tube or tubes which connects with the outer ring for circulation.
At the bottom end of the outer ring there is a pipe connected by branches, or
otherwise as may be thought best, and at the top end there is a steam chest
connected to each sectional tube or tube ring with a connecting pipe or pipes
from the steam chest to the bottom circulating pipe or pipes. These Ring pockets
are placed side by side, the fire passing through the space where there are no tubes,
then through the tubes in the next section and so on until the desired heating
surface is obtained.-The fire-box is formed of rings, without the pockets, of a
number sufficient to give the desired fire-grate surface. The flues can return from
the end at the sides or bottom in the ordinary manner.
These Boilers can be in single sections or Rings set side by side and connected to
the steam chest and to the bottom pipe or pipes by branches forming two independent
flues.

page_text: The proposed Marine type of Boiler I make in the same way with pockets to all
the sectional rings the fire passing through the bottom half of the inside of the
Rings and returning through the tubes that are placed in the pockets. These
Rings can be riveted or welded together in halves and connected by branches or
otherwise as described above.
I can also make these sectional rings without the pockets connected inside by
Galloway or other tubes for circulating the water and extra heating surface.
If desired I can also make this boiler with the box at the bottom and the fire at the
top returning through the tubes at the bottom then passing at the bottom of the
Rings and to the flues or up-take.
The sectional rings may be made either round, or oval, or flat sided, or of whatever
form or shape considered best or desirable.

page_text: I, JAMES BALDWIN, of Devonshire Brass Works, Keighley, in the County of York,
Engineer, do hereby declare the nature of this invention for IMPROVEMENTS IN STEAM
BOILERS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
My Boiler is a sectional ring boiler made multitubular with or without pockets,
and can be built up in the form of a Lancashire, or Cornish, or Return Tube Marine
type of boiler.
It is made in sections, my great object being to obtain a boiler which will stand
working at high pressures, combined also with great heating surface and good
circulation of water.
The land type I propose making as follows:-Each section is formed by having
rings, or tubes bent in ring form, welded or riveted together, with a pocket placed
half-way down (or this pocket may be placed in any other position as may be con-
sidered desirable) inside the Rings, forining tube plates, or they can be fitted with
cross tubes.
Through these pockets, tubes pass, screwed into plates or otherwise, and on the
bottom of these pockets there is a tubo or tubes, which connects with the outer ring
for circulation. At the bottom end of the outer ring there is a pipe connected by
branches, or otherwise as may be thought best, and at the top end there is a steam
chest connected to each sectional tube or tube ring, with a connecting pipe or pipes
from the steam chest to the bottom circulating pipe or pipes.
These ring pockets are placed side by side, the fire passing through the space where
there are no tubes, then through the tubes in the next section, and so on, until the
desired heating surface is obtained.-The fire box is formed of rings, without the
pockets, of a number sufficient to give the desired fire grate surface.
The flues can return from the end, at the sides or bottom in the ordinary manner.
These Boilers can be in single sections, or rings set side by side, and connected
to the steam chest, and to the bottom pipe or pipes, by branches, forming two
independent flues. The proposed Marine type of Boiler I make in the same way,
with pockets to all the sectional rings, the fire passing through the bottom half of the
inside of the rings, and returning through the tubes that are placed in the pockets.--
These rings can be riveted or welded together in halves, and connected by branches or
otherwise, as described above.
I can also make these sectional rings without the pockets, connected inside by
Galloway or other tubes, for circulating the water and extra heating surface.
If desired, I can also make this boiler with the box at the bottom, and the fire at
the top returning through the tubes at the bottom, then passing at the bottom of the
rings, and to the flues or up-take.
The sectional rings may be made either round, or oval, or flat sided, or of whatever
form or shape considered best or desirable.
The fire-box can be placed at the bottom with two or more ring sections on the top

page_text: for the return heat, or one or more steam chests can be arranged, and the same for
the blow-off pipe and feed inlet.
In the drawings appended hereto, Fig. 1 shows a section of the rings and the
tubular pocket, Figs. 2, 3, and 4, are front elevations, and Fig. 5, shows a side elevation
partly in section.
Fig. 1. shows eight of the tubular rings side by side, the front showing the Fire-
bars S. in the first four rings A. B. C. & D. in section; these rings are made in two
halves, and riveted together as shown, in Fig. 5. at T. T., the flanges joining.-The
rings E. F. G. & H. are fitted with pockets, as shown in Figs. 2 and 5. letter I, with
a cross tube, P, joining the bottom of the pocket to the inside of the tubular rings;
or they can be fitted with cross tubes as shown in Fig. letter J. At the top of
these rings, there is a steam chest, K. K., with branches, L. I., joining on each
of the tubular rings, A. B. C. D. E. F., G. & H.-At the bottom of these rings there is
a blow off pipe or feed inlet, M. M., with branches, N. N., on the top side, leading to
the outside of each tubular ring; and a connection O. O. on each end of this pipe
leading to the steam chamber K. which act as circulating pipes.
The section Fig. 5, shows the tubular pocket I with a tube at the bottom end P.
joining on the inside of the rings.
Fig. 2 also show the Fire Door R on the front end. The pockets I shown on
Fig. 2. are placed at an angle so that the sections cross each other.-Fig. 4 gives an
end view of the Rings, with cross tubes J. placed in the inside of each Ring; and
the position of the cross tubes in each Ring crossing each other, is shown. Fig. 3.
shows the Rings without cross tubes or pockets, so that these Boilers can be made to
represent any of the various types of steam Boilers.
Figs. 6. 7. 8. & 9. show Marine types of Boiler figs. 6 & 7 giving the tubular
pockets 1. at the bottom with cross tubes P in the last two Rings D. and E. as shown
in section in fig. 6; and figs. 8 & 9. give the tubular pockets I. on the top over the
firebars S. with the cross tubes P. underneath the pocket and inside the outer rings.
In other respects these Boilers are of exactly the same construction as before
described.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
-
1. A Steam Boiler made with Ring Tubes of any section, welded or flanged, or
otherwise joined together, as shown in drawing Fig. 5.
2. Tubular pockets placed inside the Tubular Rings, welded or Riveted, or other-
wise fastened, as shown, with tubes passing through them, the front and back forming
tube plates, as and for the purpose described.
3. A tube connecting the bottom end of the pocket to the inside of the Tubular
Ring, substantially as described.
-
4. The method of joining each Ring, with a branch, to a steam chamber or
chambers, substantially as described.
5. The method of placing a tube or tubes, at the bottom of the rings, with branches
on to each tubular ring, to form the blow off and feed inlet, substantially as
described.
6. The two end tubes as shown in fig. 1. acting as circulating pipes.
7. The method of placing the tubular rings one above the other, and connecting
same together by branch pipes, substantially as described, the heat passing through
the bottom row, and returning through the top or at the sides.
8. The improved steam Boiler substantially as described.
Dated thi 2.1 1
A
11000