IMPROVEMENTS IN STEAM- GENERATORS AND APPARATUS FOR HEATING AND CIRCULATING WATER FOR HORTICULTURAL AND OTHER PURPOSES
Year: 1880

page_text: LETTERS PATENT to John Bellamy, of Byng Street, Millwall, in the County
of Middlesex, Engineer, for an Invention of "IMPROVEMENTS IN STEAM-
GENERATORS AND APPARATUS FOR HEATING AND CIRCULATING WATER FOR
HORTICULTURAL AND OTHER PURPOSES."
PROVISIONAL SPECIFICATION left by the said John Bellamy at the Office
of the Commissioners of Patents on the 19th February 1880.
JOHN BELLAMY, of Byng Street, Millwall, in the County of Middlesex, Engineer.
"IMPROVEMENTS IN STEAM GENERATORS AND APPARATUS FOR HEATING AND
CIRCULATING WATER FOR HORTICULTURAL AND OTHER PURPOSES."
My Invention relates to horizontal tubular steam generators and apparatus for
heating and circulating water for horticultural and other purposes.
In apparatus according to my Invention the products of combustion from the
fireplace, which is arranged inside the shell of the boiler or heater, after passing
through suitable fire tubes to a chamber or chambers at the back end of the
apparatus, are caused to pass thenco through the water space to the front end of
the apparatus by return tubes of larger diameter than the first named fire tubes,
such diameter not being less than about of the length, and such tubes being so
proportioned that the sum of the cross sectional areas of the return tubes shall
exceed the sum of the cross-sectional areas of the first-named fire tubes; from the
front end of the apparatus I carry the heated gases or products of combustion back
to the rear end of the apparatus in suitable flues or channels arranged exteriorly
of the boiler or heater, and thence I allow them to escape by a suitable chimney.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Bellamy in the Great Seal Patent Office on the 17th August
1880.
JOHN BELLAMY, of Byng Street, Millwall, in the County of Middlesex, Engineer.
"IMPROVEMENTS IN STEAM GENERATORS AND APPARATUS FOR HEATING AND
CIRCULATING WATER FOR HORTICULTURAL. AND OTHER PURPOSES."
My Invention relates to horizontal tubular steam generators and apparatus for
heating and circulating water for horticultural and other purposes.
In apparatus according to my Invention the products of combustion from the
fire-place, which is arranged inside the shell of the boiler or heater, after passing
through suitable fire tubes to a chamber or chambers at the back end of the
apparatus, are caused to pass thence through the water space to the front end of
the apparatus by return tubes of larger diameter than the first-named fire tubes,
such diameter being, by preference, equal to about from one thirty second to one
twenty second of the length, and such tubes being so proportioned that the sum of
the cross sectional areas of the return tubes shall exceed the sum of the cross sectional
areas of the first-named fire tubes; from the front end of the apparatus I carry
the heated gases or products of combustion back to the rear end of the apparatus in
suitable flues or channels arranged exteriorly of the boiler or heater, and thence I
allow them to escape by a suitable chimney.
Referring to the accompanying Drawings, Fig. 1 is a central longitudinal vertical
section of one of my improved steam boilers.
Fig. 2 is a sectional plan of the same; and
Fig. 3 shows a half elevation of the firebox end, and a half transverse vertical
section taken in the liue A, B, of Fig. 1.
The
1 is the body or shell of the boiler; 2 is the firebox or furnace surrounded by
water as shown; 3, 3, are the fire tubes through which the products of combustion
pass from the furnace to the chamber 4 formed at the back end of the boiler.
hot gases pass from the chamber 4 back through the water space of the boiler
by the tubes 5 into chambers 6 and 7 at the front ond of the boiler, and thence by
a side flue 8 and a diagonal flue 9, underneath the boiler, to the fluo 8* and
chimney 10, as shewn by the arrows; 11 is a door to the back chamber 4 allowing
of access to the tubes.
A portion (12) of the front of each of the chambers 6 and 7 is made removable
to afford access to the tubes 5.
In some cases additional return tubes 13 may be provided through the steam
space of the boiler (for superheating the steam), as shewn in Figs. 4 and 5, the back
chamber 4 being carried up higher, and a partition 14 fixed below the tubes 13,
through which partition is or are a hole or holes provided with a damper or dampers
to regulate the amount of heat passed through such tubes. The front chambers are
united above the fire door, thus forming one chamber 6 in front for receiving the
gases from the return tubes 5 and 13 and conveying them down to the dues 8 and
(not shown).
Fig. 6 is a central longitudinal vertical section of a boiler or apparatus for
heating and circulating water for horticultural and other purposes.
Fig. 7 is a sectional plan of the same; and Fig. 8 shews a half elevation of the
fire place end, and a half transverse section taken in the line C, D, of Fig. 6.
In this case the return tubes 5 aro arranged in a single row around the top and
sides of the fire box and series of tubes 3, and are connected with a single chamber
4 at the back and a single chamber 6 in front of the boiler. The fire box is of
large dimensions in proportion to the dimensions of the shell of the boiler, by which
arrangement, if the furnace be fully charged with fuel, the boiler may be kept at
work many hours without further attention.

page_text: To afford access to the tubes 5, the upper portion of the front of the chamber 6 is
hinged at 15 so that it may be turned down, being kept in its closed position by
the fasteners 15 a.
In other respects this boiler resembles in general arrangement (except as to the
proportion of the water space) that illustrated in Figs. 1 to 3, and the saine
reference numerals are used to denote like parts.
Having described the nature of my said Invention and explained in what manner
the same is to be or may be performed or carried into practical effect, I would have
it understood that what I consider to be novel and original, and therefore claim as
secured to me under the Letters Patent herein before in part recited is,-
The constructing and arranging steam generators and apparatus for heating and
circulating water for horticultural and other purposes, substantially as hereinbefore
described, and as illustrated in Figs. 1 to 3, in Figs. 4 and 5, and in Figs. 6 to 8
of the accompanying Drawings.
In witness whereof, I, the said John Bellamy, have hereunto set my hand
and seal, this Seventeenth day of August, in the year of our Lord Oue
thousand eight hundred and eighty.
JOHN BELLAMY. (L.S.)