Improvements in Furnaces for Steam Boilers and other purposes.
Year: 1894

page_text: Date of Application, 18th Sept., 1894-Accepted, 20th Oct., 1894
COMPLETE SPECIFICATION.
Improvements in Furnaces for Steam Boilers and other purposes.
We, HANS LUTZ, of 26 Lauferthormauer, Nuremburg, Engineer, and WILHELM
SCHAEFER, of Steinsdorfstrasse 19, Munich, Merchant, both in the Kingdom of
Bavaria, 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 :-
Our invention relates to furnaces for generating steam in boilers and for other
purposes, and the chief object of our invention is to consume the fuel so
completely that there shall be practically no smoke.
And in order that our invention may be fully understood and readily carried
into effect we will describe the accompanying sheet of drawings reference being
had to the figures and letters marked thereon.
Fig. 1 is a sectional side elevation and Fig. 2 a plan view of part of Fig. 1, of
a furnace constructed according to our invention, adapted to be applied to a steam
boiler, or for other purpose.
In the drawings,-A represents part of the outer portion of the furnace, B a
lining of fire brick or other suitable refractory substance, C the front of the
furnace, H the furnace door through which the fuel is fed into a space R,
DD transverse pipes or passages composed of any suitable material, D² passages
in the furnace lining B, connected by passages D' with a space D³ which is divided
from the furnace by a plate P, preferably solid, and a movable plate P¹ both of
which plates are supported by the sides, or sides and front C of the furnace; a
valve V is fitted in the front plate to admit air for combustion and a flue F
conducts the heated gases from the furnace to the steam boiler or other place
where the heat is to be employed.
The operation is as follows:-
Fuel is fed through the door H on to the plate P and air for combustion is fed
through the valve V into the space D³, and through the side passages D¹ D² into
the open pipes D. When the fuel is properly ignited the air in the pipes D
becomes thoroughly heated; fresh fuel is admitted as required through the
door H onto the incandescent fuel in the space R so that as the smoke arises from
the fresh fuel it is met by the heated air from the pipes D and is thereby almost
completely consumed.
The amount of air admitted to the furnace is regulated by varying the position
of the valve V.
The ashes and dirt collect upon the plate P¹ and are removed at intervals as
required.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
In a furnace for steam boilers and other purposes-
1. A furnace composed of an inclined plate, a door above the same for the
admission of fuel, a valve placed below to admit air, with means such as the side
passages for admitting air to open pipes placed in the upper part of the furnace,
substantially as and for the purposes described.

page_text: 2. The general arrangement and combination of parts forming our improved
furnace substantially as and for the purposes described.
Dated this 17th day of September 1894.
H. B. BARLOW & GILLETT,
17, St. Ann's Square, Manchester, Agents for Applicants.