IM- PROVEMENTS IN THE CONSTRUCTION OF BOILERS TO BE HEATED BY GAS
Year: 1876

page_text: LETTERS PATENT to Sigismund Leoni, of 66, Saint Paul Street, New North
Road, in the County of Middlesex, Manufacturer, for the Invention of "IM-
PROVEMENTS IN THE CONSTRUCTION OF BOILERS TO BE HEATED BY GAS."
PROVISIONAL SPECIFICATION left by the said Sigismund Leoni at the Office
of the Commissioners of Patents on the 24th October 1876.
SIGISMUND LEONI, of 66, Saint Paul Street, New North Road, in the County of
Middlesex, Manufacturer. "IMPROVEMENTS IN THE CONSTRUCTION OF BOILERS TO
BE HEATED BY GAS."
My Invention consists in the construction of boilers for the production of hot
water and steam, composed of a number of separate steam-tight tanks or chambers
connected together by communicating pipes and enclosed within an outer casing,
heat being applied by gas to the under surface of the lowest set of tanks or chambers,
and acting through them on the upper tanks or chambers by means of their
communications.
Each separate tank or chamber is furnished with a man-hole by means of which
it can be cleaned out as required. By constructing boilers in this manner a con-
siderable increase of heating surface is obtained with great facility for keeping them
clean, and thereby preventing incrustation when in use. By means of boilers
constructed in this manner large quantities of hot water can be produced with a
comparatively small expenditure of gas, and such boilers are not liable to get out of
order. These boilers when intended to be used for supplying steam to an engine
are fitted with a steam chest for the purpose, which can also be used to supply
steam for ordinary household or kitchen use. A hot closet or a griller may also be
fitted over the boiler if required, such griller being heated by an atmospheric
gas ring.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Sigismund Leoni in the Great Seal Patent Office on the 24th April
1877.
SIGISMUND LEONI, of 66, Saint Paul Street, New North Road, in the County of
Middlesex, Manufacturer. "IMPROVEMENTS IN THE CONSTRUCTION OF BOILERS TO
BE HEATED BY GAS."
My Invention of "Improvements in the Construction of Boilers to be Heated by
Gas" consists in the construction of boilers for the production of hot water and
steam, composed of a number of separate steam-tight tanks or chambers connected
together by communicating pipes and enclosed within an outer casing, heat being
applied by gas to the under surface of the lowest set of tanks or chambers, and
acting through them on the upper tanks or chambers by means of their com-
munications.
Each separate tank or chamber is furnished with a man-hole, by means of which
it can be cleaned out as required. By constructing boilers in this manner a con-
siderable increase of heating surface is obtained with great facility for keeping them
clean, and thereby preventing incrustation when in use. By means of boilers
constructed in this manner large quantities of hot water can be produced with a
comparatively small expenditure of gas, and such boilers are not liable to get out of
order. These boilers when intended to be used for supplying steam to an engine
are fitted with a steam chest for the purpose, which can also be used to supply steam
for ordinary household or kitchen use. A hot closet or a griller may also be
fitted over the boiler if required, such griller being heated by an atmospheric
gas ring.
Having thus stated the nature of the said Invention, I will proceed to describe
more particularly in what manner the same is to be performed by the aid of the
accompanying Drawings, in which are represented the tanks or chambers above
referred to, and certain applications of them when combined to different purposes.
In Sheet 1. Figures 1, 2, 3, and 4 represent the tanks or chambers; and in
Sheet II. Figures 5, 6, 7, and 8 represent them combined and applied to different
purposes.
Fig. 1 is a side elevation of one of the tanks or chambers; Fig. 2 is a plan view
of the same; Fig. 3 is a front view; and Fig. 4 represents another form of tank or
chamber.
Fig. 5 shews a number of tanks or chambers with communicating pipes combined
so as to form a boiler but without a casing.
Fig. 6 shews a boiler with a portable hot water tank over it.
Fig. 7 shews a boiler with a hot air closet; and Fig. 8 shews a boiler with a steam
chest and steamers for culinary purposes over it.
In these several Figures the same letters of reference indicate corresponding parts.
A, A, are the steam-tight tanks or chambers provided with flanges B; C is a
man-hole let into the front plate of the tank or chamber, by means of which it can
be cleaned out as required.
The tank or chamber represented in Figures 1, 2, and 3 is of a rectangular form,
with its greatest dimensions from front to back, and furnished with a flange B to
which the front plate D is bolted.
The tank or chamber shewn in Fig. 4 forms three sides of a square, the front
being intended to be covered by the outer casing, and thereby made to enclose a
space to receive heat and be utilized as required.
In Fig. 5 the arrangement for heating the lowest set of tanks or chambers A, A,
by means of gas is shewn at E; these tanks or chambers communicate with those
above them by means of the pipes F, F, and the same arrangement is continued

page_text: throughout the entire series of tanks or chambers combined to form a boiler. The
tanks or chambers behind the front covering plates are of less width than their
flanges, as shewn at Fig. 2, so that when several are combined there are spaces
between them for the passage of heat, and they are stayed as required at the back
part of the boiler. By means of this arrangement the heat applied at the bottom of
the boiler will ascend between the tanks or chambers throughout the whole enclosed
space, and will cause a constant circulation of the heated water through the tanks.
G, G, are pipes for the supply of water to the lower tanks or chambers; H, H, are
outlets for drawing off heated water; and I, I, are pipes or outlets for the escape
of steam.
The outer casing for the boiler and apparatus connected therewith is not shewn,
as this forms no part of the Invention, and will be varied as required.
In Fig. 6 is shewn a hot water tank K combined with the boiler; the whole
forming a portable apparatus to supply hot water for household purposes in any
part of the house.
In Fig. 7 a hot air closet L is shown over the boiler; and in Fig. 8 is shewn a
steam chest M fitted with steamers N, N, receiving steam generated in the tanks or
chambers A, A, communicating with the chest M.
It is obvious that other apparatus for cooking and other purposes may be
combined with a boiler composed of separate steam-tight tanks or chambers, as
above described.
Having thus described the nature of the said Invention and in what manner the
same is to be performed, I hereby declare that I do not claim as of my Invention
any of the apparatus represented and described as combined with my improved
boilers, but what I do claim is the construction of boilers for the production of hot
water and steam composed of separate steam-tight tanks or chambers constructed
and fitted together as described and connecting pipes, the whole being arranged so
as to divide the body of water and increase the heating surface in the manner
herein-before described.
In witness whereof, I, the said Sigismund Leoni, have hereunto set my hand
and seal, the Twenty-fourth day of April, in the year of our Lord One
thousand eight hundred and seventy-seven.