AN IMPROVED CONSTRUCTION OR ARRANCE- MENT OF VERTICAL STEAM BOILER."
Year: 1881

page_text: LETTERS PATENT to George Kingdon, of Kingswear, in the County of Devon,
Engineer, for an Invention of "AN IMPROVED CONSTRUCTION OR ARRANCE-
MENT OF VERTICAL STEAM BOILER."
PROVISIONAL SPECIFICATION left by the said George Kingdon at the Office
of the Commissioners of Patents on the 4th July 1881.
GEORGE KINGDON, of Kingswear, in the County of Devon, Engineer.
IMPROVED CONSTRUCTION OR ARRANGEMENT OF VERTICAL STEAM BOILER."
"AN
The object of this Invention is a special construction or arrangement of vertical
steam boiler, and consists in making the outer shell of the boiler very large in
diameter in proportion to its height, and also the upper part containing the steam
space and water surface larger in diameter than the lower part containing water,
thereby reducing the size of fire grate and the water space in proportion to steam
space and water surface, and lowering the total height. In increasing the number
of tubes which are of less diameter and also of shorter length than is usual, in
making the steam space much larger, and in staying the upper or larger of the two
tube plates directly to the lower outside shell or small part of the boiler.
"
The several features in the construction above mentioned are employed in
combination, whereby the following advantages are gained, large steam room and
water surface for the steam to rise off, and very dry steam supplied, thereby
entirely obviating all priming. The tubes being proportionally sinaller as the
depth of water through which they pass is less, to enable the products of combustion
which escape to the funnel to pass off at a very low temperature. The large size of
the fire grate in proportion to the power of the boiler makes it quick in raising
steam, and enables a full supply to be kept up with a very moderate natural draft,
thereby saving an immense amount of wear and tear in the boiler. The boiler is
consequently easy to construct and repair, and the arrangement of stays enables it
to carry a high pressure in proportion to its weight.
The formation of the boiler is such that although almost the whole of the water
is above the level of the fire, which ensures perfect circulation, yet by the arange-
ment of the bottom flanges sufficient room is left for any accumulation of mud
which takes place.
It contains very little water in proportion to its power, but from its construction
a considerable alteration in the amount of water in the boiler can take place
without materially affecting the water level.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Kingdon in the Great Seal Patent Office on the
31st December 1881.
GEORGE KINGDON, of Kingswear, in the County of Devon, Engineer.
IMPROVED CONSTRUCTION OR ARRANGEMENT OF VERTICAL BOILER."
"AN
The object of this Invention is a special construction or arrangement of vertical
steam boilers, as represented in the annexed Drawings, Figures 1 and 2, and
consists in making the outer shell A of the boiler very large in diameter in
proportion to its height, and also the upper part B containing the steam space C
and water space C³ larger in diameter than the lower part D containing the water
(thereby reducing the size of the boiler in proportion to the grate surface,
heating surface, steam space, and water surface). In increasing the number of
tubes E, E, which are of less diameter and also of shorter length than is usual,
in making the steam space C much larger, and in staying the upper or larger of
the two tube plates F, F, directly to the lower outside shell or small part A of the
boiler.
The several features in the construction above mentioned are employed .in
combination, whereby the following advantages are gained, large steam room and
water surface for the steam to rise off, and very dry steam supplied, thereby
entirely obviating all priming. The tubes being proportionately smaller as the
depth of water through which they pass is less, enable the products of combustion
which escape to the funnel G to pass off at a very low temperature. The large size
of the fire grate H in proportion to the power of the boiler makes it quick in
raising steam, and enables a full pressure to be kept up with a very moderate
natural draught, thereby saving an immense amount of wear and tear in the
boiler.
The boiler is easy to construct and repair, and the arrangement of staying
enables it to carry a high pressure in proportion to its weight.
The formation of the boiler is such that although almost the whole of the water
is above the level of the fire, which ensures perfect circulation, yet by the arrange-
ment of the bottom flanges I, I, sufficient room is left for any accumulation of mud
which may take place. It contains very little water in proportion to its power,
but from its construction a considerable alteration in the amount of water in the
boiler can take place without materially affecting the water level.
Having now described the nature of my said Invention and in what manner the
same is to be performed, I declare that I claim,-
The special construction of vertical steam boiler, as shown in the annexed Sheet
of Drawings, in which the several features herein before mentioned are in
combination for the purposes set forth.
In witness whereof, I, the said George Kingdon, have hereunto set my band
and seal, this Thirtieth day of December, in the year of our Lord One
thousand eight hundred and eighty one.
GEORGE KINGDON. (L.S.)