Year: 1898

page_text: "1
I, ALFRED LANGTON, of Messrs. Humphrys Tennant & Co., of Deptford Pier,
Kent, Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to the construction of water-tube steam generators of the
kind described in the Specification to Niclausses' Patent No 1052 of 1891, in
which a water chamber or collector" divided by a longitudinal partition inte
two compartments, has projecting from it outer steam generating tubes communi-
cating at one end with the one compartment of the collector and closed at the
other end, within which tubes were inner feed tubes communicating with the other
compartment of the collector so that the water was made to flow from the latter
through the inner tubes into the generating tubes from which the steam and
water passed back into the first compartment, whence the generated steam was led
into a steam chamber.
In the anangement described in Niclausse's Specification No 1052 of 1891 the
part of the outer tube which was fixed in the collector was formed separate from
the other pait and was constructed of malleable cast iron with lateral openings
for the entrance of the water and escape of steam, such casting, which is called the
"lantein," extending transversely through both compartments of the collector,
the generating tubes being screwed into the one end thereof, while the other
end was closed by a screw cap which also supported the inner water tube.
My present invention has for its object to simplify and to make more efficient
the above described construction, by doing away with the separate malleable cast
iron lantern and its screwed connection with the outer tube, and it consists in
extending the generating tube right through the two compartments of the collector,
and providing lateral openings therein in both compartments respectively for the
entrance of water into the inner tube and for the escape of steam from the gene-
rating tube
The latter has a coned shoulder formed on it by staving by which
it is fitted into the hole in the inner wall of the collector, while on or in its
outer end is screwed a cap of steel, iron or other metal on the outer surface of
which is formed the coned shoulder that is fitted into the hole of the outer wall
of the collector
At the point of the generating tube corresponding to the position of the mouth
of the inner tube an internal ring is fixed in the generating tube so as to close
the annular space between this and the mouth of the inner tube, and thus insure
that the feed water shall pass from the outer compartment of the collector into the
inner tube

page_text: I, ALFRED LANGTON, of Messis Humphreys Tennant & Co., of Deptford Piel,
Kent, Engineer, do hereby declare the nature of this invention and in what manner
the same 18 to be performed to be particularly described and ascertained in and
by the following statement.-
*
"
My invention relates to the construction of water-tube steam generators of the
kind described in the Specification to Niclausse's Patent No 1052 of 1891, in
which a water chamber or collector divided by a longitudinal partition into
two compartments, has projecting from it, outer steam generating tubes communi-
cating at one end with the one compartment of the collector and closed at the
other end, within which tubes were inner feed tubes communicating with the other
compartment of the collector, so that the water was made to flow from the latter
through the inner tubes into the generating tubes from which the steam and
water passed back into the first compartment, whence the generated steam was led
into a steam chamber.
In the arrangement described in Niclausse's Specification No 1052 of 1891, the
part of the outer tube which was fixed in the collector was formed separate from
the other part and was constructed of malleable cast iron with lateral openings
for the entrance of the water, and escape of steam, such casting, which is called the
"lantein," extending transversely through both compartments of the collector,
the generating tubes being screwed into the one end thereof, while the other
end was closed by a screw cap which also supported the inner water tube.
This construction suffered from the disadvantages firstly, that the necessarily
very fine screw threads of the joint, between the tube and the "lantern," were
liable to give way under the longitudinal strain to which they were subjected,
when withdrawing the tubes, and secondly, that the comparatively weak parts of
the malleable cast iron lantern, between the lateral openings, were liable to
fracture
According to my present invention I obviate the above defects and at the same
time simplify the construction by entirely dispensing with the said malleable cast
iron lantern, and in lieu thereof, extending the generating tube right through
the two compartments of the collector, and providing lateral openings in both
compartments, respectively for the entrance of water into the inner tube and for
the escape of steam and water from the generating tube.
My said improved construction of the generating tubes is shewn on the accom-
panying drawing in which Figure 1 shews a pait horizontal longitudinal section
through one of the generating tubes, Figure 2 shews an elevation of the front end
of the generating tube, and vertical section of part of the collector, Figure 3
shews an end view of the same, Figure 4 shows a cross section at XX Figure 1.
Figure 5 shewa a modified arrangement of the cap fixed on the front end of the
tube The steam generating tube A instead of stopping short at the inner wall B¹
of the collector B, and being there screwed into the malleable cast iron lantern,
as in Niclausse's patent, is extended right through the collector B, and has a
coned collar formed on it at A' by staving, by means of which it is fixed in the
hole of the plate B¹.
It passes loose through a hole in the partition B of the collector and has
screwed on its front end a cap C with coned shoulder at C¹ by which it is fixed
in the hole of the front plate B³
This cap has an external hexagonal surface for enabling it to be screwed on to
the tube A, and into it is screwed the plug D¹ that carries the inner tube D in
the same manner as described in Niclausse's patent

page_text: In the upper and lower sides of the tube A are cut openings at A³ and A¹ which
serve respectively to give entrance to the feed water into the inner tube D from
the chamber B of the collector, and to allow the steam and water to pass from
the generating tube A into the chamber B5 of the collector, A 1ng is fixed
inside the tube A at the mouth of the tube D, so as to close the annular space
between this and the tube A, and thus insure the cuculation of the water and
steam in the above described manner
The inner end of the tube A is closed by a screwed plug F as in Niclausse's
construction and the steam generator is also otherwise the same as that construc-
tion, and need therefore not be further described
In the modification shewn at Figure 5 the cap C is screwed into the interior
of the mouth of A instead of on the exterior thereof
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim is.
In water tube steam generators of the kind herein referred to, a steam gene-
ating tube such as A having an external coned shoulder such as A¹ to fit the
coned opening in the inner wall of the collecting chamber, an extension formed in
one therewith passing right through the collecting chamber and having two sets
of openings such as A and A3 and a cap such as C screwed on to oi into the
outer end of the said tube, and having a coned shoulder such as C¹ to fit the coned
hole in the outer wall of the collecting chamber, substantially as described.
Dated then 15th law of Wohnen 1900
ABEL & IMRAY,
Agents for the Applicant.