Improvements in the Method of and in Apparatus for Superheating Steam, Circulating Water and Controlling the same.
Year: 1897

page_text: Improvements in the Method of and in Apparatus for Superheating
Steam, Circulating Water and Controlling the same.
I, JOHN WILLOUGHBY, Engineer, of Gomersal, near Leeds, in the County of
York, do hereby declare the nature of this invention to be as follows:-
-
The object of my invention is to produce dry or superheated steam; for use in
steam engines or for general purposes, such as boiling dye-pans, heating, tentering,
combing, and carding machines, and for any heating and drying purposes required.
I construct my superheater so that a person may at will circulate water through
it instead of steam, either direct from the boiler, or from outside sources, when it
at once acts as an economizer, with multiplied advantages over the ordinary type,
by reason of its being in closer contact with the hot gases, thus acting as a source
of hot water supply of great utility as "feed water" to the ordinary marine boiler,
and where necessary to the ordinary type of Lancashire boiler, or generally for
supplying hot water as required.
I construct my superheater for the ordinary type of Lancashire boiler of a series
of vertical pipes or tubes, connected to one or more top and bottom boxes or
clambers and fixed in the back flue or combustion chamber, in such a manner
that the bottom box or boxes is directly connected' with an arrangement of pipes,
running under and outside the boiler, which are so contrived that with the aid of
a steam valve and water cock, steam is let into the superheater, or, for the purpose
of preventing collapse of apparatus when getting up" steam, water may be
circulated through the superheater, or in the case for marine purpose steam may
be blown through from other boilers to assist in generating steam and preventing
collapse of apparatus.
The top box or boxes is connected to an arrangement of pipes running on the
top of the boiler in direct communication with the engine also with the boiler, so
governed and regulated by the aid of stop valves and a check valve that the engine
may receive the whole of the superheated steam, or for it to be used proportionally
between engine and boiler, or so that the whole may be injected into the bottom
or coldest part of boiler, for the purpose of generating steam.
For the purpose of increasing greatly the superheating area I further fix a
tubular coil from a position near the fire bridge and carry the same to a connec-
tion with lower box or boxes, thus forming part of superheater.
This coil is likewise so arranged as to make it possible to blow steam through
it, or circulate water through it, as a safe guard against collapse when "getting
"steam.
up
The whole of the apparatus is so fixed as to constitute no impediment to the
draught, and all pipes leading to the engine are so arranged as to be above the
level of water line" of boiler, so that in the event of any pipe or pipes breaking,
or joints bursting, water is prevented from getting to engine with consequent
serious results.
"
i
When applied to the ordinary type of marine boiler I fix my superheater in t'e

page_text: uptake in such an elevated position as to constitute no inconvenience when clean-
ing out boiler tubes.
I construct my superheater for marine boiler of a series of curved pipes or
tubes, for the purpose of allowing for expansion and contraction, and connect the
same in a horizontal position to one or more boxes or chambers, the whole when
fixed to be practically no obstruction to draught.
It has all the advantages before described when applied to the Lancashire
boiler.
I so construct and arrange my superheater for both Lancashire type of boiler
and marine boiler as to require no fire proof wall or other non conducting material
as a shield or guard against the hot gases.
With proper regulation it will receive without restriction the full inpingement of
the hot gases whilst insuring a free and uniform circulation.
Dated this 23rd day of Tun1007
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent for Applicant.
Improvements in the Method of and in Apparatus for Superheating
Steam, Circulating Water and Controlling the same.
I, JOHN WILLOUGHBY, Engineer, of Queen Street, Gomersal, near Leeds, in the
County of York, 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:-
The object of my invention is to produce dry or superheated steam, for use in
steam engines or for general purposes, such as boiling dye-pans, heating, tentering,
combing, and carding machines, and for any heating and drying purposes required.
I construct my superheater so that a person may at will circulate water through
it instead of steam, either direct from the boiler, or from outside sources, when the
apparatus acts as a source of hot water supply of great utility as "feed water"
to the ordinary marine boiler, and where necessary to the ordinary type of
Lancashire boiler or generally for supplying hot water as required.
DESCRIPTION OF DRAWINGS.
Fig. 1 shows side elevation of my apparatus applied to a Lancashire boiler.
Fig. 2 is a plan of Fig. 1.
Fig. 3 is a front elevation of Fig. 1.
Fig. 4 is a sectional front elevation of Lancashire boiler showing coil behind
the bridge to the superheater.
Fig. 5 is a side elevation of Fig. 4, partly in section.
Fig. 6 is a side elevation showing my invention applied to a Lancashire boiler,
made in sections for overcoming difficulties in regard to space in the combustion
chamber.
Fig. 7 is a plan of Fig. 6.
Fig. 7 is an end view of Fig. 6.
Fig. 8 is a front elevation of my superheater as applied to a marine boiler.
Fig. 9 is a side elevation of Fig. 8.
Fig. 10 is a plan of same.
I construct my superheater for the ordinary type of Lancashire boiler of a series
of either straight or curved vertical pipes or tubes A connected to one or more.

page_text: top B and bottom boxes or chambers B' and fixed in the back flue or combustion
chamber C, in such a manner that the bottom box or boxes B is directly connected
with an arrangement of pipes D running under and outside the boiler which are so
contrived that with the aid of steam valves E steam is let into the superheater, or,
for the purpose of preventing collapse of apparatus when "getting up steam,”
water may be circulated through superheater, by means of cocks F.
19
H, L, and L' are superheated steam valves to engines, L and L³ are superheated
steam valves to boiler, H' are check valves to boiler, N are superheated steam valves
for general purposes, P is ordinary wet steam valve to engines, R are air valves, S
aro drain cocks, T are pipes to return superheated steam to boiler
The top box or boxes 13 is connected to an arrangement of pipes 'G, running on
the top of the boiler in direct communication with the engine by means of branch
pipes G, and steam valve H. The whole is so governed and regulated by the
aid of the said stop valves and check valves so that by opening valves H, L and L'
the engine may receive the whole of the superheated steam, or for admitting
superheated steam proportionately to the boiler and engine, I partially open
valves, H, L, L', L, and L³ or I may close valve L and L and open valve L and L³
when steam will be admitted proportionately between boiler and engine. Also
by closing valves L L', L³, and L and opening valves N, the whole of the super-
heated steam may be used for general purposes. By this means I may also if
desired employ the valves and pipes upon one side for admitting the superheated
steam to the engine and the other for employing it for general purposes, or I
may pass the steam upon one side to the boiler, and use the other for general
purposes.
The superheated steam when passed to the boiler is injected into the bottom or
coldest part of boiler, by means of extension pipes G³ and branches K to which
are connected a series of smaller pipes T, for the purpose of assisting in the genera-
tion of steam.
By opening air valves R, and drain cocks S, air is circulated through superheater
with the object of preventing damage to apparatus in the event of it being necessary
to disconnect it from the boiler when working.
For the purpose of greatly increasing the superheating area, I further fix,
when desired a tubular coil J see Figs. 4 and 5, from a position near the fire bridge
and carry the same to a connection with the lower box or boxes B', thus forming
part of the superheater, or in place of the coil I may employ a straight pipe.
The said coil or straight pipe is likewise so arranged by means of pipes K and
valves K¹ as to make it possible to blow steam through it, or by means of water
cocks K2 to circulate water through as a safe guard against collapse when "getting
up sleam."
The whole of the apparatus is so fixed as to constitute no impediment to the
draught and all pipes leading to the engine are so arranged as to be above the level
of "water line" of boiler, so that in the event of any pipe or pipes breaking, or
joints bursting, water is prevented from getting to engine with consequent serious
results.
FIGS. 6, 7, AND 7*.
For the purpose of overcoming difficulties in regard to space in the combustion
chamber of Lancashire type of boiler or difficulties of position when erecting or
fixing, I construct my superheater in sections so that one part or section at a
time may be let down into position, and so that one or more sections may be
detached and removed as desired without interfering with the efficient working
of apparatus with remaining sections.
When this detachable form of superheater is adopted I construct ny apparatus
of a series of one or more vertical pipes or tubes A (straight or curved) which are
combined at the bottom with a horizontal piped chamber B1 flanged at end; and
in like manner pipes or tubes are combined at top with a piped chamber B flanged
at right angles.
The whole of the sections are then connected at the bottom to a horizontal pipe B³

page_text: constructed with the necessary number of branches for coupling to flanges of
piped chambers. With the aid of steam valve E and one or more lengths of
pipes starting from dome G of boiler and directed down the back end of the boiler
into the mouth of flue, under, and outside the boiler, thence running full length
of one side of flue and returning along the opposite side to a connection with the
aforesaid horizontal branched pipe B, wet steam is flowed into superheater sections.
In like manner by the aid of a top branched pipe H coupled to an arrangement
of pipes H, governed by valve M, superheated steam may be directed, wholly or
partly through one or more lengths of pipes H to engine, or by means of branch H³
in conjunction with check valve J and valve J¹ superheated steam may be returned
wholly or partly to crown of boiler.
The whole may be so regulated and controlled as to supply superheated steam
under the same conditions as defined in Figs. 1 and 2.
"3
For the purpose of guarding against damage to apparatus when "getting up
steam a curved pipe K with water cock K³ attached to front end of boiler
within the water line and connected to U joint of pipes F, by which means water
may be circulated through the several sections at will. By removing blank
Hanges P and P, air is circulated through apparatus with the object of preventing
damage to superheater in the event of it being necessary to disconnect it from boiler
when working. Pipe K¹ connected to U joint of pipes F and combined with water
cock K² is for the purpose of draining apparatus of waste water as required.
FIGS. 8, 9, AND 10.
When applied to the ordinary type of marine boiler I fix my superheater in the
uptake in such an elevated position as to constitute no inconvenience when cleaning
out boiler tubes.
I construct my superheater for marine boiler of a series of curved pipes or
tubes A for the purpose of allowing for expansion and contraction, and connect the
same in a horizontal position to one or more boxes or chambers Band B¹, the whole
when fixed to be practically no obstruction to the draught.
Dis a valve for wet steam from boilers, E is a valve for dry steam to engines, F
is a valve for dry steam to boiler which is returned to the base or coldest part by
means of a series of curved pipes or tubes H connected to pipes J and J. G is
check valve. C is valve to receive steam or water from outside sources by which
means steam may be flowed from other boilers into superheater or water may be
circulated through it, when getting up steam," when apparatus acts as an
auxiliary to boiler in generating steam.
Generally it has all the advantages before described when applied to the
Lancashire boiler.
I so construct and arrange my superheater for both Lancashire type of boiler
and marine boiler as to avoid scaling of pipes and so as to require no fire proof
wall or other non-conducting material as a shield or guard against the hot gases.
With proper regulation it will receive without restriction the full impingement
of the hot gases whilst insuring a free and uniform circulation.
This apparatus by acting as part of the boiler when getting up steam increases
the area and volume of the boiler as a whole.
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. Apparatus for superheating steam, consisting of elements, tubes or pipes, and
boxes or chambers fixed in the combustion chamber at back end of Lancashire
type of boiler in such a position as to received freely full impingement of hot gases,
as shown and described.
2. Apparatus for superheating steam consisting of the arrangement of tubes or
pipes and boxes or chambers with valves fixed in the uptake of marine boilers in
such a position as to receive freely the full impingement of the hot gases sub-
stantially as shown and described.

page_text: 3. The use in combination with the apparatus for superheating steam, of one
or more lengths of pipes running under boiler in external flues and receiving wet
steam from front end of boiler by means of valve and ourved pipe and flowing
same to the connection with main apparatus as shown and described.
4. The use in combination with the superheater and pipes under boiler in
external flues, of a spiral coil in the internal flue of Lancashire type of boiler, so
arranged as by means of curved pipe and valve as to flow steam to a connection to
the main apparatus as shown and described.
.
5. In combination with the superheater and pipes under boiler in external flues
with or without the spiral coil, the series of pipes, valves and check valves fixed
on the top of boiler and so connected to the apparatus as to return superheated
steam wholly to the crown or to the bottom of the boiler for generating wet steam
or direct to the engine, or it can be used proportionally between boiler and engine
or wholly or partly for general purposes as shown and described.
6. Apparatus for superheating steam constructed in sections with tubes, pipes.
and boxes or chambers (fixed in the combustion chamber) for overcoming
difficulties as to space or position when erecting and so that the superheating area
may be varied as desired by detaching sections as shown and described.
7. Apparatus for superheating steam as before described in conjunction with
one or more water cocks so connected with pipes and boiler, or spiral coil that it
acts as a water circulator as shown and described.
Dated this Twenty-third day of March 1898
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds, and
Crossley Street, Halifax,
Patent Agent for the Applicant.