Improvement in Apparatus for Heating Feed Water and Promoting' Water Circulation in Locomotive and other Steam Boilers.
Year: 1898

page_text: PROVISIONAL SPECIFICATION
An Improvement in Apparatus for Heating Feed Water and Promoting'
Water Circulation in Locomotive and other Steam Boilers.
I, CHARLES DENTON ABEL, of Bukbeck Bank Chambers, Southampton Buildings.
Chancery Lane, in the County of London, Consulting Engineer and Chartered
Patent Agent, do hereby declare the nature of this invention (as communicated to
me from abroad by John King, Charles Downes and Mihangel Ap, Iwan, all of
Buenos Anes, Argentine Republic,) to be as follows.
In the Specification to Patents No 2279 of 1896 and 15167 of 1897 were described
constructions of feed water heaters consisting of box shaped receptacles which were
arranged in the fine-box or furnace of locomotive and other steam boilers and' were
made to take the place of the fire brick deflecting arch usually employed in such
fire boxes, through which receptacles the feed water was circulated by means of
a pump, and whence the heated water was led by a pipe through the crown plate
o sides of the fire box into the water spaces of the boiler
The present invention relates to an improved construction of the said feed water·
heater and apparatus in connection therowith, whereby a more effectual heating
of the feed water and circulation thereof 18-effected, and whereby also, when not
required to act as feed water heater, it is made to act as an auxiliary steam
generator, through which the water of the boiler is made to cuculate.
For this purpose the apparatus is constructed as follows.--Within the fire box,
in the position usually occupied by the fire brick arch, 18 fixed a feed-water heater
which is constructed as follows. On each side of the fire box 18 fixed a tubular
chamber which inclines upwards from its rear end, which is close to the tube plate,
to its front end which corresponds in position with the front of the inclined brick
arch usually employed to deflect the flame and gases Those two side chambe18
are connected by two rows of tubes, the tubes of the upper row being aanged
over the spaces between the tubes of the lower row, so that the passage of flame
or gases directly upward 18 much obstructed, and can be entirely prevented when
desired by laying a plate over the upper tubes. The rear ends of the chambers
are connected to the feed pump or injector, and from the front ends of the chambers
pipes ascend to the water space of the boiler above the fire box Thus the feed'
water in its passage through the chambers and tubes is heated, and ascends with
such steam as is generated to the boiler space above the fire box. The pipes lead-
ing to the rear ends of the chambers may have branches connecting, them to the
barrel of the boiler, these branches as well as those connecting to the feed pump
or injector being provided with suitable valves, so that when desired, instead of
feed water passing through the heater, water from the barrel of the boiler may pass,
becoming heated on its way
Dated this 8th day of June 1898.
ABEL & IMRAY;
Agents for the Applicant.

page_text: An Improvement in Apparatus for Heating Feed Water and Promoting
Water Circulation in Locomotive and other Steam Boilers.
I, CHARLES DENTON ABEL, of Birkbeck Bank Chambers, Southampton Buildings,
Chancery Lane, in the County of London, Consulting Engineer and Chartered
Patent Agent, do hereby declare the nature of this invention (as communicated to
me from abroad by John King, Charles Downes and Mihangel Ap Iwan, all of
Buenos Aires, Argentine Republic,) and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following state-
ment;-
In the Specification to Patents Nos. 2279 of 1896 and 15167 of 1897 were
described consta uctions of feed water heaters consisting of box shaped receptacles
which were arranged in the fire-box or furnace of locomotive and other ateam
boilers and were made to take the place of the fire brick deflecting arch usually
employed in such fire boxes, through which receptacles the feed water was circu-
lated by means of a pump, and whence the heated water was led by a pipe through
the crown plate or sides of the fire box into the water spaces of the boiler.
In a late Specification No 1413 of 1898 18 described a heater in the firebox
consisting of two tubular receptacles which cross the fire box and are connected
by a number of tubes sloping up from the receptacle close to the back of the fire-
box, to the other receptacle which is at a higher level, situated about the middle
of the firebox and is connected by two pipes to the water space above the fire box.
The present invention relates to an improved construction of the said feed water
heater and apparatus in connection therewith, whereby a more effectual heating
of the feed water and circulation thereof 18 effected, and whereby also, when not
required to act as feed water heater, it is made to act as an auxiliary steam
generator, through which the water of the boiler is made to circulate,
For this purpose the apparatus 18 constructed as shown on the accompanying
drawings.
Fig 1 is a longitudinal section Fig 2 is a transverse section and Fig. 3 is
a sectional plan of the fire box with feed heater according to the present invention
arranged therein.
Within the fire box, in the position usually occupied by the fire brick arch, is
fixed a feed-water heater which is constructed as follows; On each side of the fire
box is fixed a tubular chamber a which inclines upwards from its one end, which
is close to the tube plate to its front end which corresponds in position with the
front of the inclined brick arch usually employed to deflect the flame and gases.
Those two side chambers are connected by two rows of tubes b, the tubes of the
upper row being arranged over the spaces between the tubes of the lower row, so
that the passage of flame or gases directly upward 18 much obstructed, and can be
entirely prevented when desued by laying a plate over the upper tubes. The rear
ends of the chambers are connected by pipe c to the feed pump or injector, and
from the front ends of the chambers pipes d ascend to the water space of the boiler
above the fire box
Thus the feed water in its passage through the chambers and tubes 18 heated, and
ascends with such steam as is generated to the boiler space above the fire box The
pipe may have branches connecting it to the barrel of the boiler, these branches
as well as those connecting to the feed pump or injector being provided with suit-
able valves, as described in the Specification No. 1413 of 1898 above referred to,
so that, when desired instead of feed water passing through the heater, water from
the barrel of the boiler may pass, becoming heated on its way

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what
I claim is.-
-
In combination with the fire box of a steam boiler a feed water heater consisting
of two tubular chambers, one at each side of the hie box, sloping upwards from
their ends next the tube plate, connected by two rows of closs tubes, having their
lower ends connected by pipes to the feed pump or injector and to the barrel of the
boiler and the upper ends connected by pipes to the water space above the fre
box, substantially as described with reference to the drawings.
Dated this 16th day of February 1899
ABEL & IMRAY,
Agents for the Applicant