Improvements in and relating to the Cleaning of Boiler Furnace Flues.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to the Cleaning of Boiler Furnace Flues.
I, JOSEF VON WENUSCH, of 4, Giessergasse, Vienna IX, in the Empire of
Austria-Hungary, Engineer, do hereby declare the nature of this invention to be
as follows:-
My invention relates chiefly to continuously worked fire-tube or flue boilers,
and its object is to enable the ashes to be easily and rapidly removed therefrom.
According to my invention a special device is provided in the rear or lateral
masonry of the boiler. This said device consists of a semi-circular sheet metal
ash-pan provided with a folding or other handle, which pan moves on rails and
can be slid into the fire-tube or flue. Said pan is normally located in an opening
in the interior of the boiler-masonry closed by an inner slide-door and by an outer
slide or folding door, so that during the working of the boiler, any access of air is
efficiently prevented. The openings required for the passage of the handle of the
ash pan, are closed by rotary slides or valves.
In order to remove the deposited ashes from the flue, first the inner door of the
opening in the masonry is opened by a pulling or pushing action, thereupon the
semi-circular ash pan is moved inwards upon its rails into the end of the fire-
tube or flue; the ashes are then pushed into the pan and the latter with its contents
is subsequently drawn back into the opening in the boiler-masonry; thereupon
the inner door is closed, the outer door opened and the ash pan entirely withdrawn
from the opening in the masonry, in order to be emptied. Finally the empty ash
pan is re-inserted into the said opening and the outer door again closed.
Dated this 13th day of April 1897.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
Improvements in and relating to the Cleaning of Boiler Furnace Flues.
I, JOSEF VON WENUSCH, of 4, Giessergasse, Vienna IX, in the Empire of
Austria-Hungary, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
The present invention concerns a contrivance for clearing the cinders accumu-
lated in the flame-tubes of boilers with interior furnaces and flues, in a simple and
easy way, without interrupting the working of the boiler, or having to fear any
injurious penetration of cold air from the outside.

page_text: Fig. 2 is a transverse section on the line -y of Fig. 1 and
Fig. 3 is an exterior view of the door.
At the end or laterally, in the brick-work of the boiler an apparatus is arranged,
which completes the apparatus forming the object of my Patent No. 3026 of
February 4th 1897.
This apparatus is composed of a box M in sheet iron or any suitable matter
square or semi circular called ash-box, running on rails N and can be slid into the
flame tube by means of a handle or rod.
The ash-box, when it occupies the position I, is in a space made in the brick-
work of the boiler, this said space is shut by the interior trap-door K¹ and the
exterior trap-door K, so that the cold air cannot penetrate into the flame-tube.
At the top of the square box M cross-bars a are fixed, bent in a semi-circle, over
which the ash-scraper A, which forms the object of my Patent No. 3026 of the
4th 1897, can slide.
The look-hole S serves to see if the ashes are sufficiently numerous to be drawn
out.
When we wish to clear the flame-tube of its ashes, the trap-door K' is first
opened by drawing the chain k and the ash-box M is slidden on the rails N from
the position I to the position II as far as the end of the flame-tube, the ash-
scraper A is then drawn by means of the chain k¹ from behind the flame-bridge to
the end of the flame-tube and the ashes are thus pushed and fall into the sheet-
iron box; after which the box is drawn out by means of a rod in the cavity of the
brick work and the inner door is shut.
When the box is almost full, it is drawn out through the outside trap-door K.
Ash boxes of large dimensions can be fixed on rollers and the chain of the ash-
scraper can be worked by means of a hand-winch or with the hands.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
claim is:-
°
1) In boilers with interior furnaces and flues, with the object of clearing the
cinders from the flame-tube without interrupting the working of the boiler, the
combination, with the ash-scraper which forms the object of my Patent No. 3026
of the 4th February 1897, of a square or semi-circular ash-box located at the end
or laterally in an opening of the brick-work of the boiler provided with two trap-
doors; the said box can slide on rails against the flame-tube and the cinders can
be pushed into the box by the scraper which is drawn, by means of a chain, to
the end of the flame-tube.
2) An improved ash pan for boiler furnaces substantially as described and shown.
Dated this 11th day of January 1898.
L. DUVINAGE,
Patent Agent, 8, Rue des Princes, Brussels, Belgium.