Improvements in Steam Generators.
Year: 1890

page_text: Date of Application, 25th Nov., 1890
Complete Specification Left, 25th Sept., 1891-Accepted, 7th Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in Steam Generators.
I WILLIAM COOKE of Jackson Chambers South Castle Street, Liverpool in
the County of Lancaster, Engineer do hereby declare the nature of this invention
to be as follows:-
The invention relates mainly to steam generators of large diameter such as those
used on board ship, and the object is to so construct such boilers that whilst
retaining a large heating surface construction will be facilitated and durability and
efficiency increased.
The invention consists essentially in constructing generators with an internal
heating surface composed of a series of plates so fashioned and united together as
to form practically a series of heating flattened tubes separated by water spaces.
The said shaped and joined plates are further so made that they can as a whole be
readily placed in position and withdrawn from the shell of the boiler.
A suitable method of construction is the following:-Sheets of metal (by
preference mild steel) are rolled to the required thickness and cut to a suitable
form, these are afterwards heated and put into a press which imparts such form to
the plate that by placing two or more in a group connected as hereafter described
spaces are formed so that each alternate pair of surfaces form flattened tubes or
flues and the other pair of surfaces form water spaces. In the process of rolling
ribs may be formed on the surface of one side of the plate, for the better conduction
of heat.
The plates after being rolled are pressed into the required form and are welded
together thereby forming a box or nest of alternating water and fire spaces. The
said box is flanged at the two opposite ends in such a way that the said nest or box
may be secured to the front plate of the boiler at one end and to the flame box at
the other, and may be removed without interfering with the structure of the
boiler.
The shell and ends of the boiler are of any usual construction.
Dated 1 T
1900
Per pro J. T. KING,
W. B. Johnson,
Agent.
COMPLETE SPECIFICATION.
Improvements in Steam Generators.
I WILLIAM COOKE of Jackson Chambers South Castle Street, Liverpool, in
the County of Lancaster, Engineer, 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 invention relates mainly to steam generators of large diameter such as those
used on board ship, and the object is to so construct such boilers or generators that
whilst retaining a large heating surface construction will be facilitated and
durability and efficiency increased.
The invention consists essentially in constructing generators with an internal
heating surface composed of a series of plates so fashioned and united together as
to form practically a series of heating flattened tubes separated by water spaces.
The said shaped and joined plates are further so made that they can as a whole be
readily placed in position and withdrawn from the shell of the boiler.

page_text: A suitable method of construction is the following:-Sheets of metal (by
preference mild steel) are rolled to the required thickness and cut to a suitable
form, these are afterwards heated, and put into a press which imparts such form to
the plate that by placing two or more in a group connected as hereafter described,
spaces are formed, so that each alternate pair of surfaces form Hattened tubes or
flues, and the other pair of surfaces form water spaces. In the process of rolling,
ribs may be formed on the surface of one side of the plate for the better conduction
of heat.
The plates after being rolled are pressed into the required form and are welded
together, thereby forming a box or nest of alternating water and fire spaces. The
said box is flanged at the two opposite ends in such a way that the said nest or box
may be secured to the front plate of the boiler or generator at one end, and to the
flame box at the other, and may be removed without interfering with the structure
of the boiler or generator.
The shell and ends of the boiler or generator are of any usual construction.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a front view half being in transverse section and Figure 2, is a
longitudinal section of a boiler or generator constructed in accordance with my
invention..
a is a cylindrical shell. 6 front plates. c back plates. d flues which may be
plain, corrugated, cylindrical, or of other desired form. e, f, flame box or com-
bustion chamber walls. top of flame box or combustion chamber. h, i, j, show
three modifications of series of flattened welded tubes with flanged ends. The
flanges are welded together at the ends forming the water spaces, so as to form end
or tube plates k, l, m, or the said tubes are welded to end plates so as to form boxes
or nests of tubes. The rear end plates of which 1, m' are shown on the drawings
are of smaller area than the front end plates of which k, l, are shown on the
drawings, so that the said end plates may pass through openings in the front plate b
of the boiler or generator and be secured to the plate e of the flame box or
combustion chamber, whilst the front plates k,l & m, which last is not shown,
of the box or nest of tubes are secured to the front plate of the boiler or generator.
The end plates are connected to the boiler or generator by rivets in the usual way.
The nest of tubes are shown of ribbed inetal; and the nest of tubes i of
corrugated metal and the nest of tubes j of combined ribbed and corrugated
metal. 21 heating spaces.
o water spaces. Figures 3, 4 and 5 show each of the
above modifications drawn to a large scale with end flanges km².
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
First. Steam generators substantially as herein set forth.
Second. Steam generators constructed with boxes or nests of flattened tubes
formed of ribbed plates connected by end plates, substantially as set forth and
illustrated in Figs. 1. 2 and 3.
Third. Steam generators constructed with boxes or nests of flattened tubes
formed of corrugated plates, connected by end plates substantially as set forth and
illustrated in Figs. 1. 2 and 4.
Fourth. Steam generators constructed with boxes or nests of flattened tubes
formed of combined ribbed and corrugated plates connected by end plates sub-
stantially as set forth and illustrated in Figs. 1. 2 and 5.
tho
Unted the u
Per
pro
J. T. KING,
J. Johnson,
Agent.
Per pro J. T. KING,
J. Johnson,
Agent.