A Doners, Аpplicable also to Steam Boilers.A APPARATUS
Year: 1885

page_text: A Doners, Аpplicable also to
Steam Boilers.
FRED SILVESTER Engineer Newcastle Staffordshire do hereby declare the nature
of this my invention for HEATING APPARATUS to be as follows:-
The Boiler as represented by the enclosed Drawing is specially designed for
Heating Apparatus A being the water space B the fire box containing the fire
and C the proposed patent water way bridge; this bridge may be either plain or
formed with tubes as shown, the number of such tubes may be varied or the
size and position altered.
The water way bridge is connected to the Boiler by means of circulating or
return pipes H H. in the fire box and underneath the grating and the branch pipe
or pipes K forms the flow and is connected at the top of fire box by a flange as
shown, thus a perfect circulation and great economy is secured. The water bridge
may be placed in any position or desirable distance from the front of the Boiler,
the said water bridge may be made seperate and attached to the flue as specified
or may be worked in the boiler by either weilding or reviting and it may be made
entirely of cast or wrought iron or of steel or other metal or a combination.
The outer shell of the Boiler I purpose to make of steel or if desired entirely of
steel, to be formed in any number of plates but preferably of two, the outer shell
is of the form or shape of an ellipse in front section and tapering from front to
back more or less as shown. The ring at front of Boiler which connects the shell
and flue plates I make of wrought iron or malleable cast or connected by means of
a Z shaped ring (in section), or flange & weild same in Boiler, this ring I make to
fill the elliptical part of the shell and cylindrical flue and a mud hole is formed
in same of any convenient size or form, which may be easily removed for cleaning
out the Boiler. In the mud hole door a blow off tap is fixed to be used as may
be required, the cast iron bracket carrying the frent of Boiler is made to fit the
outer shell the seperate combustion plate door."J" is placed loose in the cavity
in the bridge or combustion plate for easy removal for cleaning out at the back of
bridge.

page_text: The plain cast iron combustion plate marked D on the drawing may be used
seperate, or in lieu of the water or plain bridge, the plate door J is used also in
conjunction with this combustion plate.
The foregoing improvements viz:-The water way combustion plate C the loose
door J, and the elliptical shaped front with manhole for cleaning out I also claim
to be used or applied to all Steam Boilers.
My claim is for the water way bridge combustion plate C, the elliptical shaped
shell with malleable or other metal ring as also the combustion plate D, and the
application of all or any of these matters to all Steam Boilers.
Date: 19th dow of Nawamhan 100K

page_text: Improvements in Circulating-boilers, Applicable also to
Steam-boilers.
I FRED SILVESTER of Newcastle Staffordshire, Engineer do hereby declare the
nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:_
My invention relates to and consists in combinations and arrangements of parts
for heating water and causing it to circulate in the boiler and through pipes in
connection therewith, and is also applicable to boilers for generating steam.
Fig. 1 is a longitudinal elevation in section; fig. 2 a plan section; fig. 3 a
cross sectional elevation at A-B fig. 1, looking towards and in front of the bridge;
fig. 4a back end elevation, and fig. 5 a front end elevation of my improved
circulating Boiler.
Fig. 6 is a front and fig. 7 an edge view of a combustion plate shown detached.
Fig. 8 is a front and fig. 9 an edge view of the hollow waterway combustion
plate shown detached.
Fig. 10 is a front elevation and fig. 11 an end sectional elevation of the door
and frame used in combination with the combustion plate or hollow water way
combustion plate.
The outer shell a of the boiler is larger in diameter at the front than at the back
end and its lower part is formed to bend outwards from the cylindrical form, so
that when the boiler is placed with the upper surface of the shell in a horizontal
position a hollow channel a¹ will be formed by the lower part of the shell along
which mud and deposit from the water will pass to the front of the boiler, where a
hole is formed which is covered water tight when the boiler is in use by a plate a¹
secured by screws to the front of the boiler, this plate (a³) having also a cock or
tap a formed or secured in it.
By means of the cock a³ water can at any time be rapidly drawn off and with
it the mud or sediment, and when desired the plate a' can be removed, and a rake
or other suitable instrument introduced to break up and withdraw any incrustation
or sediment.
b is the inner shell of the boiler which is or may be cylindrical from end to end
leaving the water spaces b¹ as shown between it and the outer shell a.
The furnace and combustion chamber is formed within the inner shell b.
b³ is the casting attached to the front of the boiler in or on which the furnace
door or doors are formed; 6ª is the dead plate which carries the outer ends of the
fire bars 64, the inner ends of which are supported on a ledge formed in front of
the bridge or combustion plate c.
In figs. 1, 2 and 3 the hollow waterway combustion plate or bridge c is shown
combined with the inner shell 6 of the boiler.
It is formed as illustrated in the figs. 1, 2 and 3-and as shown detached in
figs. 8 and 9.
Its edge fits close to the inner shell b at its two sides, and at its lower part
(except where the doorway is formed) and there is a branch c¹ from its upper edge

page_text: fitting close and having a flange by which it may be secured fluid tight with the
inner shell b.
It will thus be seen that the bridge or plate c forms a strong stay against internal
pressure tending to cause the inner shell b to collapse.
There is a space left between the upper edge of the bridge c and the shell b, and
hollow stays or tubes o³ are formed or inserted in and across the water space of the
bridge c to give flue space to allow the products of combustion to pass to the com-
bustion chamber behind the bridge c and then through the outlet at 6³ to the fluo
or chimney.
There is or may be a plate d faced with fire brick or similar fire resisting
material placed in an inclined position and attached to the back of the bridge o as
shown in fig. 1 to deflect the products passing through the bridge upwards and
ignite the unconsumed gases.
The water is made to circulate in the hollow bridge c by connecting the lower
part of the bridge by one or more angle pipes (two are shown) with the inner
shell b so that water will pass from the lower water space b¹ through the hollow
bridge c and out through the branch c¹ from it to the upper water space.
This arrangement causes the water to also circulate in the water spaces and in
the circulating pipes connected with the boiler the inflow junction for which pipes
is shown at e, figs. 1 and 3 and the outflow junction at e¹ figs. 1 and 3.
The outer shell a of the boiler is or may be strengthened at its lower part where
the outward bent (a¹) is made from the cylindrical form by stays across the bend
as shown by a* figs. 12 and 13.
cis the door in the combustion plate e* figs. 6 and 7 and waterway combustion
plate o figs. 8 and 9 to give access from the ash place to the combustion chamber
behind the bridge or plate c or c*.
It will be understood that the combustion plate c* figs. 6 and 7 is or may be
used in place of the waterway bridge c figs. 8 and 9-and my improved circulating
boiler apparatus may be formed of any suitable metal, malleable cast metal being
'suitable for the hollow waterway bridge c.
Fig. 12 is a longitudinally elevation in section fig. 13 a plan section and fig. 14
is a cross sectional elevation on the line A-B fig. 12, looking towards the fire
bridge, illustrating my improvements as applied to horizontal steam boilers.
Fig. 15 is a front and fig. 16 an edge view of the hollow water way fire bridge c
detached.
The same letters of reference which are used in describing my improvements in
circulating boilers illustrated in figs. 1 to 11 are also used in figs. 12 to 16 inclusive
on the same and corresponding parts which will therefore be readily understood
'without further explanation.
The hollow waterway fire bridge c illustrated by figs. 15 and 10 is different in
details of construction from that shown by figs. 8 and 9 as in the lower part of the
bridge shown by figs. 15 and 16, there are two inflow branches c³ directly from and
solid with the bridge c and two outflow branches c¹ in place of one shown in figs. 8
and 9 and the lower part of the bridge in figs. 15 and 16 does not come close to
the lower part of the inner shell or flue b the space between being closed by a
plate except that a hole is left in the plate for the door c.
C³
A mud hole covered
by a plate (a) and having a cock (c³) is not shown in fig. 12 but is or may be used
as shown in figs. 1 and 5.
Fig. 17 is an elevation in section and fig. 18 a plan section at A-B fig. 17 of a
vertical boiler having my improvements applied to it.
The shell of the steam boiler a and its combustion chamber b is of ordinary
'construction.
My combustion plate c* or hollow waterway plate c is or may be applied (the
latter is shown in figs. 17 and 18) to and combined with the sides of the combustion
or fire box.
It is formed by a hollow circular disec having flue, tubes c³ in it connecting the
'two sides.
.

page_text: It has radial branch pipes c¹ which fit close and are secured fluid tight to the
sides of the combustion chamber.
The hollow plate c is arched upwards as shown, and there is or may be an out-
flow pipe connected with the centre crown of the hollow waterway plate c and
then branching and being attached fluid tight to the crown of the combustion
chamber to promote a more rapid circulation of the water from the side water
spaces of the boiler to the space above the crown of the combustion chamber or
two of the branches c¹ are or may be made to branch from the upper part of the
disc c to the sides of the combustion chamber.
It will be understood that the combustion plate c* and hollow waterway com-
bustion plate or bridge o may be varied in shape and the waterway or hollow
plate c may be made with tubes through it or without and may be attached in any
convenient manner to the combustion chamber and can be used as hereinbefore
described or may be combined with and applied to existing water circulating and
steam boilers.
Any desired number of these plates are or may be used in the same flue or
combustion chamber leaving suitable spaces between them, so as to act as water
heaters and steam generators and to distribute and divide the heated gases and
strengthen the internal flues or chambers against collapse under internal pressure.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is,
1. The combination, arrangement and construction of circulating boilers, sub-
stantially as herein before described and illustrated by figs. 1 to 11 inclusive of the
drawings.
2. The construction of hollow waterway bridges or plates (c) and their com-
bination with the door (c) and with the combustion chambers or flues of boilers
for circulating liquids or generating steam, substantially as hereinbefore described
and illustrated by the drawings.
3. The combination of the combustion plate (c*) and door (c) with the com-
bustion chambers or flues of liquid circulating or steam generating boilers as and
for the purpose hereinbefore described.
4. The combination, arrangement and construction of boilers for generating
steam, substantially as herein before described and illustrated by figs. 12 to 18
inclusive of the drawings.
5. The construction, combination and arrangement of the outer shells of boilers
for circulating liquid or generating steam with a channel for sediment to collect in,
the channel being inclined to cause the sediment to flow to a door or cock at the
front of the boiler, substantially as hereinbefore described and illustrated by the
drawings.