Improvements for Facilitating the Cleaning of Steam Generators or Boilers or other Tubular Apparatus.
Year: 1895

page_text: Date of Application, 30th July, 1895
Complete Specification Left, 23rd Apr., 1896-Accepted, 23rd May, 1896
PROVISIONAL SPECIFICATION.
Improvements for Facilitating the Cleaning of Steam Generators or
Boilers or other Tubular Apparatus.
1, JEAN HARTMANN, of 21 Boulevard Poissonnière, Paris, in the Republic of
France, do hereby declare the nature of this invention to be as follows:-
The subject of this invention is a perforated door which enables the soot or dust
deposited by the gases upon the walls of tubes, or on partitions, in steam boilers or
generators (whether heated with gas or coal), or in other tubular or partitioned
beating apparatus, to be swept out or off, without involving any diminution of
the intensity of the fire.
This door may consist of one or more hinged leaves, and be provided with
perforations, corresponding to the position of the tubes (or of the intermediate
Braces between the tubes, where the flame surrounds the several tubes).
The perforations are covered or concealed by a series of cover-plates each
of which generally covers a number of perforations at once, and is retained by a
central pin er pivot and a peg or key. Besides the aperture in which the said pin
or pivot engages, the plate referred to has only one perforation and, as it turns on
its pivot, it uncovers the perforations of the door one by one, and thereby affords a
ready passage for the insertion of a brush or other cleaning instrument.
The perforations in the doors should generally be set close together so as to
admit of the employment of a perforated plate; and where this arrangement
is adopted, the operator may use a single plate provided with one perforation,
substituting it for each of the non-perforated plates in succession, while he cleans
each tube (or each intermediate space between the tubes) of the boilers, one by one,
in rotation.
This method of boiler-tube cleaning offers the following advantages:
Inasmuch as the steam generating power of a boiler is in no way interfered with
or retarded by the cleaning process, this process may be repeated more frequently
than it could be hitherto. The surfaces of the tubes and other heating surfaces
may, therefore, always be kept entirely free from the soot or dust of combustion
gases, whereby the useful effect of the boiler will be increased while a saving
18 effected in the consumption of fuel. Besides, the currents of cold air, which
where the cleaning operation is performed through doors, as usually constructed-
are allowed to come into contact with the boiler, are here effectively kept away
from the same. These cold draughts have, up to the present, proved to be one of
the most powerful destructive agencies that have been at work in attacking tubular
or partitioned boilers. The present arrangement, therefore, renders boilers of this
class more durable than they have heretofore proved to be, and enables them
to operate satisfactorily for a longer period; while leakages, cracks or groovings or
other faults necessitating repairs are effectually obviated.
Dated this 30th day of Jule 1865
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: Improvements for Facilitating the Cleaning of Steam Generators or
Boilers or other Tubular Apparatus.
I, JEAN HARTMANN, of 21 Boulevard Poissonniere, Paris, in the Republic of
France, 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 :-
The subject of this invention is a perforated door which enables the soot or dust
deposited by the gases upon the walls of tubes, or on partitions, in steam boilers or
generators (whether heated with gas or coal), or in other tubular or partitioned
heating apparatus, to be swept out or off, without involving any diminution of the
intensity of the fire.
The invention will be best understood by reference to the accompanying drawing,
in which:
Figure is a front view of a door constructed in accordance with this
invention;
Figure 2 is an horizontal section thereof; and
Figure 3 is a partial elevation of the door of a steam boiler the tubes of which
are arranged at certain distances apart.
This door may consist of one or more hinged leaves, and be provided with
perforations A, corresponding to the position of the tubes, or of the intermediate
spaces between the tubes, where the flame surrounds the several tubes.
The perforations A are covered or concealed by a series of cover-plates B, each
of which generally covers a number of perforations at once, and is retained by a
central pin or pivot C and a peg or key D. Besides the aperture in which the said
pin or pivot C engages, the plate referred to has only one perforation A' and, as it
turns on its pivot, it uncovers the perforations of the door one by one, and thereby
affords a ready passage for the insertion of a brush or other cleaning instrument
(see Figure 3).
The perforations in the doors should generally be set close together so as
to admit of the employment of a perforated plate; and where this arrangement
(which is shown in Figures 1 and 2) is adopted, the operator may use a single
plate B' provided with one perforation, substituting it for each of the non-perforated
plates B, in succession, while he cleans each tube (or each intermediate space
between the tubes) of the boilers, one by one, in rotation. This substitution of
plates may also be obviated by providing the doors entirely with the plate B¹ the
hole of which is then covered by a small lid. In certain cases moreover each
hole A may be covered separately by a plate.
This method of boiler-tube cleaning offers the following advantages:
Inasmuch as the steam generating power of a boiler is in no way interfered with
or retarded by the cleaning process, this process may be repeated more frequently
than it could be hitherto. The surfaces of the tubes and other heating surfaces
may, therefore, always be kept entirely free from the soot or dust of combustion
gases, whereby the useful effect of the boiler will be increased, while a saving
is effected in the consumption of fuel. Besides, the currents of cold air, which-
where the cleaning operation performed through doors, as usually constructed-
are allowed to come into contact with the boiler, are here effectively kept away
from the same. These cold draughts have, up to the present, proved to be one of
the most powerful destructive agencies that have been at work in attacking tubular
or partitioned boilers. The present arrangement, therefore, renders boilers of this
class more durable than they have heretofore proved to be, and enables them to
operate satisfactorily for a longer period; while leakages, cracks or groovings or
other faults necessitating repairs are effectually obviated.

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 :-
-
A door for a boiler or other tubular apparatus having a number of perforations
corresponding to the situation of the several tubes, or spaces between the tubes, of
the said apparatus,-in combination with plates each of which serves to cover over
one or more perforations; such cover plates being either provided with a single
aperture or solid; substantially as and for the purpose specified, and illustrated in
the drawings.
Dated this 23rd day of April 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.