Improvements in Steam Generators.
Year: 1894

page_text: Date of Application, 18th Dec., 1894
Complete Specification Left, 17th Sept., 1895-Accepted, 2nd Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in Steam Generators.
WILHELM HÖк, Naval Architect, 13 Ashmore Street, Sunderland, and
CONSITT ELLIOTT, Superintending Engineer, 142 High Street West, Sunderland
do hereby declare the nature of this invention to be as follows:-
This steam generator is what is commonly called a water tube boiler.
The principal parts are the receiver or receivers A, the cylinder B, the
circulating pipes CC₁, the chambers such as D D, D, and D₁, G G₁ G, and G, and
the tubes such as E E, E, E, and F F₁ F, F.
;
The feed water enters the cylinder B through a pipe which is led either direct
into it, or first through such spaces as H, and H between the tubes in the boiler
then it passes through the circulating pipes C C, which are also led either direct
to the chambers D and G as on the drawing or first through such spaces as H
and H₁. Thence the water in D passes alternately through such tubes and
chambers as E G E, D, E, G, E., and that in G through F˚D₁ F₁ G, F, D, F,
and enters the receiver or receivers A in the form of steam.
Below the tubes E and F is the grate.
The furnace gases or the products of combustion rise either straight up from the
fire between the different tubes and enter the smokebox K; or they are prevented
from solely rising vertically and are forced to alternately travel horizontally by means
of fireproof tiles inserted between part of the upper and lower tubes in each or some
of the nests (a nest being E for instance).
The receiver A (which may be one or more) is either of the form shown on
the drawing consisting of two flat sides, set at an angle, taking the tubes E,
and F, and a cover which is bolted or bolted and hinged; or the receiver may be
cylindrical and is in both cases attached to the cylinder B by means of necks as
shown.
The chambers DD, D, D, and G G₁ G, G, the number of which is not necessarily
four at each side but depending on the number of nests of tubes are bounded on one
side by the continuous plates de f, which plates may be rolled or pressed or
hammered or in some alternative way manufactured to some such section as shown,
by the covers ghij which are convex or flat and either bolted or bolted and hinged
to the plates def, and by small end covers one at each end of each chamber. The
inner side of the chambers which is formed by the continuous plate def has either
one flat part, or two flat parts set between themselves at an angle, which flat part
or parts take the tubes.
These chambers may be made cylindrical; or instead of the several chambers
on each side being manufactured from one plate, each individual chamber may be
manufactured from a separate plate, which plates are afterwards connected with
one another by either riveting, bolting or welding so as to form a continuous
whole.
The tubes are either screwed with or without nuts, or expanded into the chamber
sides, or inserted in some other efficient way; and they may also bave ferrules on
the furnace side as a protection against the fire. There may be two or more nests
of tubes crossing each other, and there are two nests of tubes, i.e. the upper nests,
which do not cross. The tubes are inclined with reference to the horizontal and
may be either straight or bent and may be any diameter, thickness, length and
material.

page_text: The ends of the boiler consists of plates bolted or riveted to the front and
back plate. They are, as well as the front and back between the chambers,
lined with firebricks.
As an alternative the upper nests of tubes E, and F, may be led direct
from the chambers G, and Ds to the cylinder B in which case the receiver A is
omitted.
111 3
Dhan 100.1
Improvements in Steam Generators.
WILHELM HÖK, Naval Architect, 13 Ashmore Street, Sunderland, and
CONSITT ELLIOTT, Superintending Engineer, 142, High Street West, Sunderland
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:—
This steam generator is what is commonly called a water tube boiler.
The principal parts are: the receiver or receivers A, the cylinder B, the
circulating pipes C C₁, the chambers such as D D₁ D, and D₂, G G₁ G, and G
and the tubes such as E E, E, E, and F F, F, F. (See the drawings left with
the Provisional Specification.)
The feed water enters the cylinder B through a pipe which is led either direct
into it, or first through such spaces as H₁ and H between the tubes in the boiler;
then it passes through the circulating pipes C C₁ which are also led either direct
to the chambers D and G as on the drawings or first through such spaces as
and H₁. Thence the water in D passes alternately through such tubes and
chambers as E G₁ E₁ D, E, G, E., and that in G through FD, F, G, F, D, F„,
and enters the receiver or receivers A in the form of steam.
Below the tubes E and F is the grate.
The furnace gases, or the products of combustion, rise either straight up from
the fire between the different tubes and enter the smokebox K; or they are
prevented from solely rising vertically, and are forced to alternately travel
horizontally by means of fireproof tiles inserted between part of the upper and
lower tubes in each or some of the nests (a nest being E for instance).
The receiver A (which may be one or more) is either of the form shown on
the drawing, consisting of two flat sides, set at an angle, taking the tubes E,
and F„, and a cover which is bolted or bolted and hinged; or the receiver may
be cylindrical, and is in both cases attached to the cylinder B by means of necks
as shown.
The chambers D D₁ D, D, and G G₁ G, Ga, the number of which is not
necessarily four at each side but depending on the number of nests of tubes, are
bounded on one side by the continuous plates def, which plates may be rolled, or
pressed, or hammered, or in some alternative way manufactured to some such section
as shown; by the covers g hij, which are convex or flat and either bolted, or bolted
and hinged to the plates def; and by small end covers one at each end of the
chamber. The inner side of the chambers which is formed by the continuous
plate def has either one flat part or two flat parts set between themselves at an
angle, which flat part or parts take the tubes.
These chambers may be made cylindrical, or instead of the several chambers
on each side being manufactured from one plate, each individual chamber may be
manufactured from a separate plate, which plates are afterwards connected with

page_text: one another by either riveting, bolting, or welding so as to form a continuous
whole.
The tubes are either screwed, with or without nuts, or expanded into the
chamber sides, or inserted in some other efficient way; and they may also have
ferrules on the furnace side as a protection against the fire. There may be two
or more nests or tubes crossing each other, and there are two nests of tubes, i.e. the
upper nests, which do not cross. The tubes are inclined with reference to the
horizontal and may be either straight or bent, and may be any diameter, thickness,
length, and material.
The ends of the boiler consists of plates bolted or riveted to the front and back
plate. They are, as well as the front and back between the chambers, lined with
firebricks.
As an alternative the upper nests of tubes E, and F, may be led direct
from the chambers G, and D, to the cylinder B in which case the receiver A is
omitted.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :
1. In steam generators of the water tube type the arrangement of two or more
tiers of horizontal water chambers connected by tubes (which tubes are moderately
inclined with reference to the horizontal) with other horizontal and opposite water
chambers as substantially described above and illustrated in the drawings left with
the Provisional Specification.
2. In steam generators of the water tube type the arrangement of adding a steam
receiver or receivers above the steam and water cylinder (which cylinder is common
to almost all water tube boilers), into which the mixture of water and steam from
the tubes connecting the receiver or receivers with the aforesaid upper water
chambers, is discharged.
3. In steam generators of the water tube type the sectional form of steam receiver
indicated in Fig. 1 of drawings left with the Provisional Specification.
4. In steam generators of the water tube type the arrangement of making the front
and back each of one vertical plate, which plate is so shaped, either by rolling,
hammering, or pressing as to form the inner sides (i.e. the sides taking the tubes) of
the different water chambers.
Dated this 16th day of September 1895.