Improvements in Vertical Multitubular Steam Generating and Water Heating Boilers.
Year: 1891

page_text: Date of Application, 11th June, 1891
Complete Specification Left, 10th Mar., 1892-Accepted, 11th June 1892
PROVISIONAL SPECIFICATION.
Improvements in Vertical Multitubular Steam Generating and
Water Heating Boilers.
I GEORGE CATTON KENDAL of 80 Blacker Road North, Huddersfield in the
County of York, of no present occupation, do hereby declare the nature of this
invention to be as follows:-
For improvements in vertical, multitubular steam generating and water heating
boilers, and its objects are by more perfect combustion of fuel, to prevent smoke,
and economise fuel and labour.
These improvements are effected by a boiler constructed according to my said
invention.
This boiler may contain one or more furnaces of the following description.
These said furnaces may be of any convenient shape but when strength is
required the circular form is preferable.
The base of these furnaces are of larger diameter than their upper portion, which
two sections are connected to a tube plate. Thus connected the upper portion
forms a dome on the aforesaid base or lower section of the said furnace.
Into the before mentioned tube-plate are inserted the lower ends of a quantity
of flue tubes, and their opposite ends are secured in the crown plate of the boiler.
The said tubes act as conveyers of the products of combustion to the chimney,
and distributers of heat to the contents of the boiler.
Beneath the tube-plite, at any convenient distance therefrom are placed the fire
bars. The said distance depending on the requisite quantity of fire, in each case.
When in use, it is necessary for the purposes of this invention, to maintain a
sufficient quantity of burning fuel in the furnace to extend from the grate bars to
a short distance above the tube plate.
By this means the fuel contained between the said grate bars, and tube-plate is
raised to a very high temperature, which causes the liberation of the volatile gases
from the fuel above. When thus liberated these said gases descend into the
incandescent fuel below resulting in the ignition and consumption of all the
inflammable fuel gases.
A portion of the atmospheric air necessary for the combustion of the fuel is
admitted through the air spaces between the grate bars, and the rest through the
furnace doorway above the fire.
Dated this 10th day of June 1801
GEORGE CATTON KENDAL.
COMPLETE SPECIFICATION.
Improvements in Vertical Multitubular Steam Generating and
Water Heating Boilers.
I GEORGE CATTON KENDAL of 80 Blacker Road North Huddersfield, in the
County of York, no occupation 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 :-
The objects are by more perfect combustion of fuel to prevent smoke and
economise fuel and labour. These improvements are effected by a boiler con-
structed according to my said invention.
This boiler may contain one or more furnaces of the following description.
These said furnaces may be any convenient shape, but when strength is required

page_text: the circular form is preferable. The base of these furnaces are of larger diameter
or size than their upper portion, which two sections are connected by a tube plate.
Thus connected the upper portion forms a dome on the base or lower section of the
said furnace.
Into the before mentioned tube plate are inserted the lower ends of a quantity
of flue tubes, and their opposite ends are secured in the crown plate of the boiler.
Beneath the tube plate, at any convenient distance therefrom are placed the
fire bars. The said distance depending on the requisite quantity of fire in each
case.
When in use it is necessary for the purposes of this invention to maintain a
sufficient quantity of burning fuel in the furnace to extend from the grate bars to
a short distance above the aforesaid tube plate.
By this means the fuel contained between the said grate bars and tube plate is
raised to a very high temperature which causes the liberation of the volatile gases
from the fuel above. When thus liberated these said gases descend into the
incandescent fuel below resulting in the ignition and consumption of all the
inflammable fuel gases. A portion of the atmospheric air necessary for the com-
bustion of the fuel is admitted through the air spaces between the grate bars,
and the rest through the furnace doorway above the fire.
Having described the nature of my improvements, I herewith annex drawings
illustrative thereof.
DESCRIPTION OF DRAWINGS.
Figure 1. is a vertical section, and Figure 2. is a sectional plan.
Letter a, is the base of the furnace. 1, is the upper portion or dome of the
furnace as shown on Figures 1. and 2. e, Figures 1 and 2. is tube plate.
d, Figures 1. and 2. are flue tubes. e, Figures 1. and 2. is fire door for feeding.
Figure 1. is clinkering door. 9, are grate bars. h, is fire brick lining. i, is
man-hole. j, is tube cover. k, is chimney and 1, Figures 1. and 2. is water space.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is,
1. General construction and arrangement of parts.
Dated this 9th day of March 1809
GEORGE CATTON KENDAL.