Year: 1888

page_text: Date of Application, 1st Mar., 1888
Complete Specification Left, 10th Nov., 1888
Complete Specification Accepted, 14th Dec., 1888
Draught.
I, WILHELM Höк 5, St. Bede's Park Sunderland Naval Architect do hereby
declare the nature of this invention to be as follows:-
The steam generator is to be exclusively used with artificial draught.
The generator is multitubular; where there are tubes for transmitting heat they
are horizontal and of the ordinary kind with small diameter.
The flat sides of the combustion chambers are stayed with tubes instead of ordinary
screwed stays, so as to provide communication between the several combustion
chambers.
The fire bridge of iron is hollow and perforated.
The generator is provided with a return chamber.
The smoke box is provided with airtight doors.
The shell is cylindrical, but may be either vertical or horizontal.
The vertical boiler is a dry bottom boiler and has an exterior return chamber, lined
with non-conducting material and provided with airtight doors. The horizontal boiler
is a wet bottom boiler and has an interior return chamber.
The furnaces are horizontal and cylindrical; the cross section of a furnace in the
vertical boiler is semi-circular, in the horizontal circular.
The products of combustion go from the furnaces to the combustion chambers,
from thence through the first set of tubes (which in the horizontal boiler is on
the level with the furnaces, but in the vertical boiler above the furnaces) to the return
chamber, then through the second set of tubes (which is above the first set) to the
smoke box.
From the smoke box the products of combustion go into a tube which leads
into a rotary fan; after having gone through the fan, they are ejected through
another tube into the sea or into the air.
Th
1
1000

page_text: WILHELM HÖK 5, St. Bede's Park Sunderland Naval Architect do hereby declar
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 invention consists of improvements in the vessel in which steam in generated
and of a draught producer which takes the place of the ordinary chimney or
funnel.
The steam generator consists of a cylindrical shell and cylindrical furnaces (A) as
in ordinary marine boilers.
(B) is, in this generator, the combustion chamber proper, and (D) is a com-
bustion chamber of secondary importance called by me the return chamber on
account of the function it has to perform.
(B) communicates with (D) by ordinary marine boiler smoke tubes (C); (D) is
also in communication with the smoke box (F) by ordinary smoke tubes (E).
If there are two or more furnaces and one combustion chamber and one return
chamber to each furnace, then the inner sides of the combustion chambers (B) and
return chambers (D) are stayed with ordinary smoke tubes (K) [tubes attached to
plates as in ordinary practice] instead of with solid stays. The consequence of this
device is that the products of combustion in the different combustion chambers (B)
and return chambers (D) will intermix before entering the tubes () and (E).
To the smoke box (F), or uptake (G), or the place where the products of com-
bustion are generally collected before entering the chimney, is connected a tube or
funnel of small diameter. This tube leads into a rotary fan (EI) which fan when
the generator is at work, by exhausting through (1) the products of combustion into
the sea or into the air causes the draught that forces and maintains the fires.
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. In the case of generators having two or more furnaces and one combustion
chamber and one return chamber to each furnace, to stay the inner sides of the
combustion and return chambers with hollow tubes instead of solid stays in order to
obtain communication between the different combustion chambers and also between
the different return chambers.

page_text: 2. To have the combustion chamber connected with the interior return chamber
by ordinary smoke tubes in the manner shown.
3. The producer of the artificial draught consisting as described of a rotary fan
· connected by a tube to the uptake or the place where the products of combustion are
collected before entering the chimney, and to another tube through which the products
of combustion are ejected into the sea or into the air after having passed through the
rotary fan.
This draught producer and ejector of the products of combustion may be used in
connection with other steam generators.