Improvements connected with Smoke-consuming Apparatus for Furnaces.
Year: 1895

page_text: Date of Application, 12th July, 1895-Accepted, 17th Aug., 1895
.
COMPLETE SPECIFICATION.
Improvements connected with Smoke-consuming Apparatus for
Furnaces.
to
We, SAMUEL VON GOLDBERGER Manufacturer, of VI Theresienring No. 6,
and JOHAN RADSETAULAL, Engineer, of III Lajosgasse No. 104, both of
Budapest, in the Kingdom of Hungary, 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 connected with smoke-consuming
apparatus for furnaces and has for object a device for automatically regulating the
flow of air in the same.
Apparatus of this kind hitherto in use depend for their action on the introduction
into the furnace of an additional quantity of air necessary for the complete com-
bustion of the smoke and to enable such apparatus to work economically it is
particularly important that the introduction of the said air should be regulated
according to the changes in the process of combustion. Such regulation is usually
-effected by the stoker who raises a damper or the like to a certain height, imme-
diately after feeding the fuel into the grate, the said damper or the like being
closed gradually and automatically by the action of a pneumatic or other suitable
arrangement. As the damper or the like is raised by the stoker who to this end
either depresses a lever attached to the apparatus and connected with the damper
by an arrangement of levers or the like, or winds up the same, by means of a
chain, rope, or the like, it is evident that the efficient action of the apparatus is
entirely dependent on the stoker, that is to say, if he neglects to wind up the
regulating apparatus, he prevents the smoke-consuming apparatus from working,
or, if he operates it at the wrong moment, he reduces its efficiency.
Now our invention has for its object to ensure the efficient working of any
smoke-consuming appliance based on the aforesaid principles, without the inter-
vention of the stoker. For this purpose, the regulating apparatus is no longer
opened directly by the stoker, but automatically by means of a device hereinafter
described, which also simultaneously winds up the apparatus which causes the
damper to close gradually.
To enable our invention to be fully understood we will describe it by reference
to the accompanying drawing, in which :-
Figure 1 is a front elevation of our device applied to a steam boiler :
Figure 2 is a side view partly in section of Figure 1 :
Figure 3 is a plan of the same; and,
Figure 4 is a modification of a part of the device.
According to our invention we provide the furnace door with a strip or catch a
which, on the furnace door being opened, engages the arm b, moves it a short
distance, and then releases it by passing underneath it, but which on the door being
closed strikes the lug c on the arm band carries the latter with it for a certain
distance thereby rotating the horizontal shaft d to which the arm bis affixed.
As shewn in detail in Figure 4 one side of the boss of the arm b is provided with
two notches in which the pin or cotter e works, the said pin e having sufficient
play in the notches to allow the door to open without rotating the shaft d.
fis a collar provided to prevent the arm 6 from being displaced longitudinally
on the shaft d which is supported in bearings g and h carried by iron brackets j
and k, of which ; is secured to the shell of the boiler and k to a wall or other

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suitable support. At the end of the shaft & farthest from the boiler we provide a
lever which, when the said shaft d is rotated, moves in an arc of a circle, strikes
the arm m and depresses the same thereby operating the dampers regulating the
admission of the additional air and at the same time winding up the device for
regulating the gradual closing of the dampers. The shaft d is further provided
with a weight n or with a spring which brings it back to its original position as
soon as the catch a releases the arm b.
It is obvious that the dampers and the device for regulating the gradual closing
of the same can be operated by the rotation of the shaft in any other suitable
manner and I do not limit myself to the arrangement shewn.
In order to enable our improved apparatus to be disconnected at will, for instance
whilst firing the boiler, the arm 6 may be made in two parts 61, 62, jointed together
as shewn in Figure 4.
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 :-
1. A device for automatically opening the dampers regulating the inflow of air
:1 in smoke-consuming appliances and for automatically winding up the apparatus by
-means of which these dampers are gradually closed, the said device comprising a
shaft d mounted in bearings and adapted to be rotated when the furnace door is
opened, thereby operating, by means of an arm l, the device through the medium
of which the dampers of the smoke-consuming appliance is opened and the winding
up of the device for causing the gradual closing of the said dampers is effected,
the said device, when the furnace door has disengaged itself from the shaft, being
released by the backward rotation of the latter, brought about by a weight or a
spring, substantially as described.
2. In apparatus of the kind described in Claim 1, an arm keyed on the shaft d
and adapted to be rotated by the movement of the furnace door by means of a
catch secured to the latter, the said arm brotating the shaft when the door is
closed but riding freely on the same when the door is opened substantially as, and
for the purpose, described.
Dated this 12th day of July 1805
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.