IMPROVEMENTS IN APPARATUS FOR DRYING AND SUPER-HEATING STEAM AND FOR SIMILAR PURPOSES to be as follows:
Year: 1884

page_text: I WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, & Co Patent Agents
Southampton Buildings, London, in the County of Middlesex do hereby declare
the nature of said invention for "IMPROVEMENTS IN APPARATUS FOR DRYING AND
SUPER-HEATING STEAM AND FOR SIMILAR PURPOSES to be as follows:-
"
This invention relates to apparatus to be applied to steam-generators for drying
and super heating the steam produced thereby and has for its objects to produce
dry steam and to raise the same to a temperature above that which corresponds to
the pressure indicated by the manometer fixed to the steam generator. The said
apparatus may also be used for heating fluids other than steam The apparatus by
means of which such results are obtained comprises one or several serpentine pipes
placed in sand, and a fire-place serving to raise the said sand to the temperature
required for the production of the necessary effects, in such a manner that the steam
or other fluid, as it passes through the serpentine pipes, may be raised to the same
temperature as that of the sand surrounding the said pipes The sand bath has for
its object, first to store the heat developed by the combustion of fuel carried on in
the fire-place, secondly to regulate the drying and superheating of the steam, and
thirdly to protect the serpentine pipes from any injury which may result from a too
sudden and violent firing.
In the accompanying drawing
Figure 1 is a plan of the improved apparatus one half of each of the two lids
being removed.
Figure 2 is a central vertical section of the same.
Figures 3 and 4 are respectively a plan and a section of the movable grate.
Figure 6 is an underside view of the said apparatus and
Figure 6 is a plan of the bed of the same.
A is a steam admission pipe; A¹ is the aperture for the grate; Ab is the sand
placed between the two covers; and As the sand-bath surrounding the serpentine
pipes. B is the exit pipe for the dried and superheated steam.
C and D are iron
or copper serpentine pipes; E is a cover; and F a cast iron cylinder serving as a
fiue. is the furnace lined with refractory earth. H is a movable grate; I the

page_text: opening of the ash-box, and J is an internal cover through which pass the cast iron
tubular casings K. Through these casings pass the serpentine pipes the said casings
being filled with sand. L is a sheet iron casing enclosing the sand-bath and M an
outer sheet iron casing; between these two casings the heated gases circulate. N is
a flue serving to facilitate the lighting of the fire and O is another flue serving for
drawing purposes.
P is a cast iron base carrying the grate, and R is a cast iron bed supporting the
apparatus; S is the outer cover, and U the pivot upon which the grate moves.
V V are the slides of the movable grate and X X X X³ are doors arranged at the
lower part of the apparatus permitting the cleaning of the casings.
1 and 2 are joints of the steam pipes. 33 are the joint bolts of the cover, 4 is
the damper of the flue N, and 5 is the damper of the draught flue O.
6, 7, 8 and 9 are respectively the screws securing the sheet iron casings L and M,
the bed R, and the cylinder F.
The apparatus operates in the following manner, that is to say:-The movable
grate being placed in position the wood or other fuel is introduced by means of the
cover E into the cylinder F and thence into the fire-place G; the damper 4 of the
flue N being opened, the wood is set alight. The damper E being then closed the
products of combustion rise in the cylinder and circulate between the sheet iron
casings Land M descending subsequently to the bottom of the apparatus where they
pass out through the flue O provided with the damper 5. As soon as the fire is
lighted, the damper 4 is closed and steam is admitted; In order to stir the fire,
the grate His. moved from side to side thereby causing the fuel to descend and the
ashes to drop out. When it is required to extinguish the fire, the grate is withdrawn
and all the fuel falls in the ash box.
According to the intensity of heat produced, steam or any other gas may be raised
to a more or less high temperature. This apparatus is applicable for heating all
kind of vapours or gases. It may be provided with one or several serpentine pipes
and may be made of various shapes according to the applications for which it is
intended.
9

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, London in the County of Middlesex do hereby declare
the nature of my invention for "IMPROVEMENTS IN APPARATUS FOR DRYING AND
SUPER HEATING STEAM AND FOR SIMILAR PURPOSES and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement:-
"
This invention relates to an apparatus designed to be applied to steam-generators
for drying and superheating the steam produced thereby.
The object of the said invention is to produce dry steam and to raise the same
to a temperature above that which corresponds to the pressure indicated by the
manometer fixed to the steam-generator. The said apparatus may also be used
for heating fluids other than steam.
The apparatus by means of which such results are obtained comprises one or
more coils placed in sand and a grate for containing fire serving to raise the said
sand to the temperature required for the production of the necessary effects; in
such a manner that the steam or other fluid, as it passes through the coils, may bo
raised to the same temperature as that of the surrounding sand.
This sand has accordingly for its object, firstly to store the heat developed by
the combustion of fuel carried on in the fire-place or grate; secondly, to regulate
the drying and superheating of the steam; and thirdly, to protect the coils from
any injury which would result from the direct action of the fire.
In the accompanying drawing
Figure 1 is a central vertical section of the complete apparatus constructed
according to this invention.
Figure 2 is a plan of the bed of the apparatus.
Figure 3 is a plan of the apparatus, one half of each of the two upper lids being
removed.
Figure 4 is an underside view of the apparatus.
Figure 5 represents a plan and a section of the movable grate.
A is a steam-admission pipe, A¹ is the aperture for the grato; Ab is sand
placed between the two covers and Ao the sand surrounding the coils.
B is the exit pipe for the dried and superheated steam or other fluid, C and D
are iron or copper coils; E is a cover of sheet iron placed in the filling aperture;
and Fa cast iron cylinder serving as a flue; G is the furnace, lined with refractory
material; H is the movable grate; I the opening of the ash box; and J an internal
cover carrying tho sheet iron tubular casings K. Through these casings pass the
ends of the coils, the said casings being filled with sand.
L is a sheet iron casing enclosing the sand and M an outer sheet iron casing;
between these two casings the heated gases circulate. N is a flue serving to
facilitate the lighting of the fire and O is another flue through which the products
of combustion escape.
P is a cast iron bottom carrying the grate, and R is a cast iron bed supporting
the apparatus; S is the upper cover; U is a pin around which the grate, which is
provided with an incision T, can be moved. VV are guides for the movable grate
and X X X X³ are doors arranged at the lower part of the apparatus and
permitting the cleaning of the space between the aforesaid casings.
1 and 2 are joints of the steain pipes. 33 are the fastening bolts for the cover,
4 is the damper in the flue N, and 5 is the damper in the flue O for the escape of

page_text: the products of combustion. 6, 7, 8 and 9 are respectively the screws securing the
sheet iron casings L'and M, the bed R, and the cylinder F.
The apparatus operates in the following manner, that is to say :-
The movable grate being placed in position, the wood for lighting the fire and
the fuel are introduced through the filling aperture at the top into the cylinder F
and thence pass into the fire-place G. The damper 4 of the flue N is open when
the wood is set alight. The cover E being then put in the filling aperture, the
products of combustion rise in the cylinder and circulate between the sheet-iron
casings L and M, and, descending to the bottom of the apparatus, pass out through
the Blue O provided with the damper 5. As soon as the fire is lighted, the damper 4
is closed and steam is admitted.
In order to stir the fire, the grate H is moved from side to side thereby causing the
fuel to descend and the ashes to drop out. When it is required to extinguish the
fire, the grate is withdrawn and all the fuel falls in the ash-box.
According to the intensity of the firing, steam or other vapour or gas may be
raised to a more or less high temperature. This apparatus is applicable for heating
all kind of vapours or gases. It may be provided with one or several coils and
have various shapes, according to the applications for which it is intended.
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 :-
First. Apparatus designed for drying and heating steam or other vapours or
gases, or mixtures of gas and vapour, and consisting of heaters formed of one or
more coils in which the vapours circulate, the said coils being placed in sand
occupying a space which surrounds a source of heat.
Second. The improved apparatus consisting of the parts constructed and com-
bined substantially as described with reference to the accompanying drawing, and
operating as, and for the purpose, specified.
1241
HASELTINE, LAKE & Co.,
For the Applicant.