Year: 1885

page_text: I, MATTHEW STRAKER of No 1 Salisbury Street, Broughton Road, South Shields,
in the County of Durham, Boiler and Tank Maker, do hereby declare the nature of
this invention to be as follows:-
I construct the interior of the boiler in two cylindrical parts, the lower of
which forms the furnace or fire box, fitted with grate, above an ash pit and fire
door as usual and the top of this fire box is dome shaped. From one side a circular
or oval uptake leads into an upper cylindrical chamber which forms the flame box,
or combustion chamber, the top and bottom of which are curved, convex to the
water space (making it form an oblate sphere) and are joined by a conical water
tube to assist circulation and act as a stay. The junction of the uptake with this
combustion chamber forms a hollow bridge or water space passing over which the
flame and gases, surrounding the conical water tube, pass by an opening through
side of shell of boiler to the smoke box and thence to ebimney which may be
placed where most convenient by extending the smoke box like a belt round
boiler. The dome shaped top of the furnace and convex form of bottom of com-
bustion chamber leave between them a space for access for cleaning and repairs
and, in boilers of the larger sizes, I form pockets in sides of combustion chamber
which leave space between it and the shell for a man to get down from upper part
of boiler where the manhole is placed. In boilers of small size a separate manhole
may be provided for access to this part. The whole of the fire box, uptake and
combustion chamber are completely surrounded by and covered with the water
and there are no flat nor nearly approaching to flat surfaces requiring stays
though I provide for a stay passing down from top of shell-which will also be
dome shaped-through the conical water tube to top of fire box. In some cases-
to increase the evaporating power-I propose to use in the basin shaped bottom of
combustion chamber a supply of any inflammable oil which, igniting by the flame
and gases as they pass over the water bridge, will set up intense combustion and
tend to consume smoke. The furnace can be easily adapted for liquid fuel by any
of the appliances now used for that purpose and in using such fuel the oil may or
may not be used in combustion chamber.
Dated this 97th of NL1002
W. LLOYD WISE,
Agent for the Applicant.

page_text: I MATTHEW STRAKER of N° 1 Salisbury Street Broughton Road, South Shields
in the County of Durham Boiler and Tank Builder 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:-
I construct the interior of the Boiler in two cylindrical parts the lower of which
forms the furnace or fire box fitted with grate above an ashpit and fire door as
usual and the top of this fire box is dome shaped-From one side a circular or
oval uptake leads into an upper cylindrical chamber which forms the flame box or
combustion chamber the top and bottom of which are curved convex to the water
space (making it form an oblate sphere) and are joined by a conical water tube to
assist circulation and act as a stay-The junction of the uptake with this com-
bustion chamber forms a hollow bridge or water space passing over which the
flame and gases surrounding the conical water tube pass by an opening through
side of shell of boiler to the smoke box and thence to chimney which may be
placed where most convenient by extending the smoke box like a belt round boiler
-The dome shaped top of the furnace and convex form of bottom of combustion
chamber leave between them a space for access for cleaning and repairs and in
boilers of the larger sizes I form pockets on sides of combustion chamber which
leave a space between it and the shell for a man to get down from upper part of
boiler where the manhole is placed-In boilers of small size a separate manhole
may be provided for access to this part-The whole of the fire box uptake and
combustion chamber are completely surrounded by and covered with the water
and there are no flat nor nearly approaching to flat surfaces requiring stays though
provide for a stay passing down from top of shell which will also be dome
shaped through the conical water tube to top of fire box-In some cases to
increase the evaporating power-I propose to use in the bason shaped bottom of
combustion chamber a supply of any inflammable oil which, igniting by the flame
and gases as they pass over the water bridge, will set up intense combustion and
tend to consume smoke: The furnace can be easily adapted for liquid fuel by any
of the appliances now used for that purpose and in using such fuel the oil may or
may not be used in combustion chamber.
DESCRIPTION OF DRAWINGS.

page_text: S, S, is the shell with domed top standing on ash pit A, P, and containing the
fire box F, B, from one side of which leads the furnace uptake F, U, over the
water bridge W, B into the combustion chamber C, B which is strengthened by
the conical tube C, T which also acts to assist circulation-The flue F leads through
shell into the smoke box S, B, on which is the chimney-In boilers of this size one
manhole only is provided the pockets P, P Figures 2 and 4 allowing a man to pass
down into the space between furnace top and combustion chamber but in small
boilers those pockets are dispensed with and a manhole provides for access to the
space. The combustion chamber C, B, may contain a quantity of some inflammable
oil, supplied by a pipe through the flue F, which igniting with the flame will increase
the combustion and consume the smoke.-This boiler is equally adapted for burning
oil or liquid fuel by removing the bars and fitting into the ash pit a suitable form
of burner.
As will be seen there is no portion of the boiler presenting other than curved
surfaces concave or convex to the pressure and therefore not a single stay is
required, all the internal parts are easy, of construction and access can be easily
obtained for examination and repairs-The boiler is fitted with mudholes and all
the usual mountings which are not shewn.
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. The construction and application of vertical Steam Boilers consisting of a
cylindrical shell containing a circular furnace with a domed or hemispherical top
communicating by an oval or circular uptake flue with a combustion chamber
forming an oblate sphere with a water bridge formed therein-and preferably a
water tube or tubes through it-opening through shell into a smoke box with
the objects of securing strength without stays, efficient combustion of fuel and
evaporation of water with facility of access for examination and repair substantially
as described and illustrated.
Second. In vertical steam boilers constructed according to this invention, or of
analagous forms of the combustion chamber, the use in such chamber of oil for the
purpose of increasing the combustion and evaporation power and consuming smoke
substantially as described.