Improvements in Steam Generators.
Year: 1891

page_text: Date of Application, 10th Jan., 1891
Complete Specification Left, 29th Sept., 1891-Accepted, 31st Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Steam Generators.
A communication from abroad by THE SOCIÉTÉ ANONYME DU GÉNÉRATEUR DU
TEMPLE, of 2, Rue Casimir Perier, of Paris, in the French Republic.
I, ALLEN PARRY JONES of 55 and 56 Chancery Lane in the County of
Middlesex, Fellow of the Institute of Patent Agents, do hereby declare the nature
of this invention to be as follows:-
This invention relates to steam generators and particularly to generators or
boilers of the "du Temple" type.
According to this invention the boiler consists of an upper horizontal drum or
generator in which the main body of water is contained and two or more lower
smaller horizontal collectors placed to the right and left of the upper. The upper
generator is connected with the lower collectors by a series of small tubes of
serpentine shape preferably arranged in series of two or four along the length of
same. These tubes are secured in place by brass or similar metal cones attached to
same by which and by nuts carried by the threaded ends of said tubes they may be
secured on the inside of the generator and collectors respectively. By this arrange-
ment single tubes may be removed for renewal when desired. To facilitate this the
collectors are provided with bolted doors and the steam generator with a suitable
man-hole. Tubes of larger diameter communicate with the generator and collectors.
These tubes are not in contact with the flames and gases but are preferably outside
the boiler, whereby a lower temperature is obtained around same with the result
that the water is caused to circulate between the generator and collectors and is
subsequently forced up into the former by the high heat around the serpentine
tubes which with the generator is exposed to the full heat of the flames.
To increase the combustion steam pipes are arranged in openings in the side walls
of the grate which are covered by a door by which jets of steam may be forced in
and caused to draw in air therewith.
A baffle plate is preferably arranged near the chimney to retard the escape of the
products of combustion.
COMPLETE SPECIFICATION.
Improvements in Steam Generators.
A communication from abroad by THE SOCIÉTÉ ANONYME DU GÉNÉRATEUR DU
TEMPLE, of 2, Rue Casimir Perier, of Paris, in the French Republic.
I, ALLEN PARRY JONES of 55 and 56 Chancery Lane in the County of
Middlesex Chartered Patent Agent, 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 steam generators and particularly to generators or
boilers of the "du Temple" type such as described in the Specifications to Letters
Patent No. 2003 of 1876, and No. 2554 of 1880.

page_text: accompanying drawing in which :-
Fig. 1 represents side and end views respectively of the tubes heretofore
employed.
Fig. 2 represents the improved form of tubes in accordance with this invention.
Fig. 3 represents on an enlarged scale the means employed for securing the
tubes.
Fig. 4 is a longitudinal eleration partly in section of a generator provided with
the present improvements.
Fig. 5 is an end elevation of same partly in section, and
Fig. 6 represents on an enlarged scale an arrangement which is hereinafter
described for supporting the combustion in the furnace.
According to the invention the boiler consists of an upper drum or generator A
which serves to hold the steam and a part of the water, and two lower holders or
collectors B, B, placed to the right and left respectively of the upper drum.
The
upper drum A. is connected to the lower by a series of tubes a of small diameter
and of serpentine form as shown in Fig. 2. These (preferably four in number) are
arranged in groups in the same plane one above the other, a series of these groups
being placed side by side along the length of the generator. The tubes are given
a plain serpentine form as shown, in place of the spiral or twisted shape previously
employed as illustrated in Fig. 1, and are arranged one above the other as described.
Each tube is secured in place by cones & Fig. 3, which are screwed on the ends of
the tubes, each of which is threaded to receive same. These cones which may be of
bronze or similar material fit into cone shaped recesses in the holders A and B
respectively and are held therein without packing by means of the nuts d which
also screw upon the tubes and afford a simple and ready means of tightening up the
cone b.
By this arrangement single tubes may be readily removed for renewal when
desired, the drum or holder A being provided with a man hole at some convenient
point, and the holders B with suitable doors e secured by bolts f to enable said tubes
to be readily reached.
Tubes E of larger diameter communicate with the drum A and holders B.
These tubes are not in contact with the flames and gases but are preferably outside
of the furnace casing so that a lower temperature is obtained around the same with
the result that the water is caused to circulate between the two, rising from the
small tubes into the drum A in which the steam is collected, and then passing down
through the tubes E back into the collectors B, B, from whence it rises again, suit-
able water supply connections being provided at a convenient point. The tubes a
and the drum A are exposed to the full heat of the flames.
To increase the combustion, openings g Fig. 6 are arranged in the walls of the
furnace, and in front of these is placed a steam pipe h from which project nozzles i
their ends passing into the openings g. At intervals steam may be admitted to the
pipe so that the jets will pass from the nozzles into the furnace drawing in air
therewith and serving to improve the combustion. A sheet metal plate ; may be
provided by which the openings g may be closed when the nozzles are removed or
lifted out of the way.
In place of the arrangement of screens or baffle plates heretofore employed it is
preferred to use the single plate c which is situated beneath the funnel passage to
prevent the too rapid exit of the products of combustion.
с
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is :-
1. In a steam generator the employment of a series of groups of tubes of serpentine
or approximately serpentine form, the tubes of each group being in the same plane,
substantially as described.
2. As a means of securing the tubes of steam generators the employment of cones

page_text: carried by the tubes, said cones fitting into corresponding openings in the plates and
held therein by nuts, substantially as described.
3. The employment in a steam generator of an upper drum, two lower collectors,
serpentine tubes connecting the upper drum with the collectors and outside
circulating pipes, substantially as described.
4. The arrangement in a steam generator of the steam nozzles and air openings,
substantially as described.
5. In a steam generator of the type illustrated the arrangement of the baffle
plates, substantially as described.
6. The improvements in steam generators substantially as described and illus-
trated.
Dated this 29th day of September 1891.
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London, Agent for the Applicant.