Improvements in Steam-boilers and in the Method of Firing the same.
Year: 1891

page_text: Date of Application, 23rd July, 1891
Complete Specification Left. 5th Nov.. 1891-Accepted. 19th Dec.. 1891
PROVISIONAL SPECIFICATION.
Improvements in Steam-boilers and in the Method of Firing the
same.
We HENRY WARRINGTON, and HENRY JAMES WARRINGTON, of Berry Hill
Works, Stoke-on-Trent, in the County of Stafford, Ironmasters, do hereby declare
the nature of this invention to be as follows:-
This invention relates to improvements in steam-boilers and the method of firing
the same, and consists-
Firstly, in constructing the boiler with a return or additional flue, and
Secondly, in placing the boiler furnace outside the boiler in a position which
facilitates the passage of the heated gases through the flues.
The grate-bars of the furnace are placed in a slanting position, and are built-in
sideways and domed, so that the gases naturally follow the flue. This method of
firing facilitates stoking, ensures a better draught and diminishes the burning of
hoiler plates.
HUGHES, SON & Co.,
38, Chancery Lane, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Steam-boilers and in the Method of Firing the
same.
We HENRY WARRINGTON, and HENRY JAMES WARRINGTON, of Berry Hill
Works, Stoke-on-Trent, in the County of Stafford, Ironmasters, 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 invention relates to improvements in steam boilers and in the method of
firing or heating the same, and consists―
Firstly in constructing the boiler with an additional flue or water space, and
Secondly in placing the boiler furnace outside the boiler in a position which
facilitates the passage of the heated gases through the flues.
The invention will be more readily understood on reference to the accompanying
drawings, in which
Fig. 1 represents a two-flued boiler with the front of the firebox removed, and
Fig. 2 a section of the same through one of the flues.
a represents the body of the boiler in each of the ordinary flues of which is
placed a second flue or water space c connected with the main water space by
tubes d, thus leaving an annular space for the passage of the heated gases, and
affording a great increase of heating surface.
The furnace is erected completely outside the boiler, e being the furnace bars
which rest on supports built into the side and centre walls which are connected
by arched roofs h.
The fuel is supplied by means of hoppers j, one of which is provided for each
furnace; these hoppers are not shewn in Fig. 1.
The ashes are collected upon an iron plate k, and the heated gases after passing
through the flues b, take a downward course, and travel back underneath the boiler,
as indicated by arrows, and pass away to the stack through the opening 1,

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :
1. The construction of steam boilers with a flue or water space c, arranged
concentrically within the ordinary flue, and connected with the main water space,
by tubes d, substantially as described and illustrated in the accompanying
drawings.
2. The improved method of firing or heating steam boilers consisting in the
employment of externally located furnaces, substantially as described and
illustrated in the accompanying drawings.
Dated this 5th day of November 1891.
HUGHES, SON & Co.,
38, Chancery Lane, London, Agents for the Applicants.