Improvements in the Construction of Vertical, Donkey, or Marine Boilers.
Year: 1891

page_text: Date of Application, 25th Apr., 1891
Complete Specification Left, 23rd Jan., 1892-Accepted, 27th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Vertical, Donkey, or Marine
Boilers.
I, WILLIAM DENTON, of Perseverance Boiler Works, Wakefield, in the
County of York, Boiler Maker, do hereby declare the nature of this invention to
be as follows:-
The objects of this invention are to provide a high pressure boiler without brick
work, to obtain a greater heating surface, and to economize fuel; whereby a
greater quantity of water can be converted into steam than by the vertical or
donkey boilers now in use.
In carrying out my said invention, I construct the boiler with an outside shell
and flue between it and the inner shell, the said shells being connected by tubes,
which may be made of iron, steel, copper, or other suitable material.
The fire or furnace is at the bottom of the boiler and may be of such size as
shall be sufficient to impart the required heat.
The inner shell or fire box is provided with cross tubes which are so placed in
connection with the outer tubes, as to cause a thorough circulation of the water
throughout the whole boiler. The function of the outer shell and the outer tubes
is to further increase the temperature of the water by providing greater heating
surface and by means of the hot gases or heat derived from the products of
combustion which are passed upwards from the furnace, into the flues or
combustion chambers between the inner and outer shells, round the boiler and
upwards, thereby thoroughly utilizing the heat, after which the waste products
escape by the chimney or outlet. A suitable opening is provided between the two
shells for the passage of the heat and products of combustion from the inner shell
or fire box to the outer shell in the required manner.
Provision is made for readily cleaning out the connecting tubes and inner tubes
both inside and outside by providing sufficient room, easy access, and suitable doors.
Dated this 22nd day of April 1891.
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Construction of Vertical, Donkey, or Marine
Boilers.
I, WILLIAM DENTON, of Perseverance Boiler Works, Wakefield, in the County
of York, Boiler Maker, do hereby declare the nature of this invention, and in what
manuer the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
The objects of this invention are to provide a high pressure boiler without brick
work, to obtain a greater heating surface, and to economize fuel; whereby a greater
quantity of water can be converted into steam than by the vertical or donkey
boilers now in use.

page_text: In carrying out my said invention I construct the boiler with an outside shell A,
and flue or chamber B, between it and the inner shell C, so forming inner and outer
water spaces K and L, the said shells being connected by tubes D, which may be
made of iron, steel, copper, or other suitable material.
The fire or furnace E is at the bottom of the boiler and may be of such size as
shall be sufficient to impart the required heat.
The inner shell C or fire box is provided with cross tubes F, which are so placed,
in connection with the outer tubes D, as to cause a thorough circulation of the
water throughout the whole of the boiler. The function of the outer shell A, flue
or chamber B, and the outer tubes D, is to further increase the temperature of the
water, by providing greater heating surface, and by means of the hot gases, or heat
derived from the products of combustion, which are passed upwards through the
fire box G into the flue or combustion chamber B, formed between the inner and
outer shells, thereby thoroughly utilizing the heat, after which the waste products
escape by the chimney or outlet.
A suitable opening H is provided between the two shells for the passage of the
heat and products of combustion from the inner shell C or fire box to the flue or
chamber B and outer shell A in the required manner.
Provision is made for readily cleaning out the connecting tubes, and inner tubes
both inside and outside, by providing sufficient room, easy access, and suitable
covers or doors J.
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 :-
Constructing vertical, donkey, or marine boilers, with flues such as B, formed
between the inner shell C, and outer shell A, and provided with cross tubes F,
outer tubes D, and opening H, as and for the purposes shown and described.
Dated this 22nd day of January 1892.
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds, Agent for the Applicant.