IMPROVEMENTS IN BOILERS FOR HEATING GREENHOUSES AND OTHER BUILDINGS BY HOT WATER, AND IN THE MANU- FACTURE THEREOF
Year: 1882

page_text: LETTERS PATENT to Charles Hulseberg, of Finsbury, in the County of
Middlesex, for an invention of IMPROVEMENTS IN BOILERS FOR HEATING
GREENHOUSES AND OTHER BUILDINGS BY HOT WATER, AND IN THE MANU-
FACTURE THEREOF.
PROVISIONAL SPECIFICATION left by the said Charles Hulseberg at the
Office of the Commissioners of Patents on the 14th June 1882.
CHARLES HULSEBERG of Finsbury in the County of Middlesex IMPROVEMENTS
IN BOILERS FOR HEATING GREENHOUSES AND OTHER BUILDINGS BY HOT WATER,
AND IN THE MANUFACTURE THEREOF.
The object of my invention is to enable me to manufacture very cheaply a
boiler that shall yet be very powerful and economical for heating buildings, rooms,
greenhouses or conservatories by hot water. The boiler I use is in general shape
a saddle boiler, but to carry out my object I divide the boiler longitudinally along
the crown thereof and make it in two separate and distinct parts, each of which
contain the water to be heated. When these two parts are placed together they
form a saddle boiler with water spaces at each side of the fire box, and I make the
internal shell of the boiler or the sides of the fire box of a corrugated form so as to
increase the heating surface. Through the crown of the boiler over the the fire box
I make two or more horizontal flues, which may extend the width of the fire box,
through which the products of combustion are made to pass on their way to the
chimney. The upper and lower surfaces, or either one of them, of these flues are
also of a corrugated form. I can also make a terminal water way end to the fire
box, the water space of which would be in communication with the water space
immediately above the lowest horizontal flue as well as with the side water spaces.
This boiler is divided longitudinally into two parts as aforesaid, and the faces of
the parts that come together, namely the terminal water way ends, and the water
spaces in the crown of the boiler above and below the horizontal flues, are made of

page_text: such a suitable shape that they fit closely, and do not allow the passage of the
products of combustion between them when the two parts of the boiler are placed
in position for usc. To preserve these faces, I could also cover them with any
substance that may be suitable. The boiler may be made of cast or wrought metal,
and the wrought metal may be welded or rivetted. When the boiler is cast, I
prefer to make the outer side plates separate. The internal shell could then be
very cheaply cast and the outer plate secured thereto. There would be flow and
return sockets to each part of my boiler, or they may communicate by pipes.
When the two parts are properly placed together, the boiler would be surrounded
with the usual brickwork.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Charles Hulseberg in the Great Seal Patent Office on the
26th August 1882.
CHARLES HULSEBERG of Finsbury in the County of Middlesex
IMPROVEMENTS
IN BOILERS FOR HEATING GREENHOUSES AND OTHER BUILDINGS BY HOT WATER
AND IN THE MANUFACTURE THEREOF
The object of my invention is to enable me to manufacture very cheaply a
boiler that shall yet be very powerful and economical in heating buildings rooms
greenhouses or conservatories by hot water. The boiler I use is in general shape a
saddle boiler but to carry out my object I divide the boiler longitudinally along
the crown thereof and make it in two separate and distinct parts each of which
contains the water to be heated. When these two parts are placed together they
form a saddle boiler and the faces of the parts that come together are so made that
they fit closely and do not allow the gases and other products of combustion to pass
between them. The boiler may be made of cast or wrought metal and the
wrought metal can be either welded or rivetted. When the boiler is of cast
metal I prefer to make the outer side plates separate. The internal shells could
then be very cheaply cast and the outer plates secured thereto. This would be the
most economical method of carrying out my invention. To increase the heating
surface of the boiler I can if I should so desire make the internal shell thereof or
the sides of the firebox of a corrugated form. I can also if advisable make two or
more or less flues through the crown of the boiler over the firebox which flues may
be of any convenient size and shape. The surfaces of these flues or any of them
may also be of a corrugated form. I can also add a terminal water way end to the
boiler which would also be divided into two parts each of which parts would be
joined to or in communication with one of the parts of the boiler. There would be
flow and return sockets to each part of the boiler or the two parts may com-
municate together by pipes.
Having thus described my invention in order to clearly explain the same I refer
to the accompanying drawing shewing a boiler constructed according to this my
invention. This boiler has two horizontal flues through the crown thereof and
also a terminal water way end. The sides of the firebox and the upper surfaces of
the flues of this boiler are of a corrugated form.
Figure 1 is an elevation of the front end of the boiler the two parts whereof are
drawn apart to shew the division.
Figure 2 is a longitudinal elevation of one part of the boiler shewing the
meeting faces.
Figuro 3 is a horizontal section of the fire box and water spaces round the same
taken at a bin Figure 1.
Figure 4 is a vertical section of the boiler taken at c d in Figure 1 shewing
one method of mounting this boiler.
The letters are the same in all the Figures.
The boiler is divided longitudinally into the two parts A and B and when these
two parts are placed together they form a saddle boiler. The faces of the parts
that come together may be made in any shape to prevent the passage of the gases
and products of combustion between them. I shew three different shapes at M, H
and K. I can also make these faces perfectly plain as shewn at L and cover if
desirable the parts with plastic fire clay or any other suitable material. The boiler
may be made of wrought metal as the part A or may be of cast metal as the
part B in which the outer side plate N is separate from the internal shell. This

page_text: could be cast very cheaply and the plate N secured thereto as herein before
described. The sides C of the fire box are of a corrugated form to increase the
heating surface of the boiler. Two flues D and E are made through the crown of
this boiler and the upper surfaces of these flues are also of a corrugated form. Fis
a terminal water way end divided into two parts the water spaces in which are in
communication with the water spaces G G at the sides of the firebox and with the
water spaces immediately above the flue D. OO are the flow and return sockets
of which there are two to each part of the boiler. The water spaces in these two
parts may also communicate with each other by pipes if I should so desire. The
two parts A and B of the boiler are to be placed close together and they would
then be surrounded with the usual brickwork in any convenient form one method
of constructing which is shewn in Figure 4.
I would have it understood that I do not limit myself to the particular shape of
the boiler shewn in the accompanying drawing though I consider this boiler as
shewn would be very powerful and economical but I may make any number of
flues that I may desire and form them of any shape or I may make the boiler of a
simple saddle form without any flues or terminal water way end. What I consider
novel and my invention which will enable me to make these boilers very cheaply
is the dividing these boilers longitudinally and making them in two parts as is
hereinbefore described.
Having thus particularly described and clearly explained my invention and in
what manner the same is to be performed and used I claim as my invention which
is protected by the herein before in part recited Letters Patent.
1. The boiler divided longitudinally into two separate and distinct parts each of
which contains the water to be heated substantially as herein before described and
declared and shewn in the accompanying drawing.
2. The method of manufacturing this boiler the said method consisting in
making the boiler in two separate and distinct parts of wrought or cast metal with
or without a corrugated internal shell and placing the said two parts close together
so as to form a saddle boiler substantially as herein before described and declared
and shewn in the accompanying drawing.
3. The method of manufacturing this boiler of cast metal the said method con-
sisting in casting the internal shell of the boiler in two separate and distinct parts
either corrugated or plain securing the outer side plates to the internal shells
and placing the said two parts close together so as to form a saddle boiler
substantially as hereinbefore described and declared and shewn in the accompanying
drawing.
In witness whereof I the said Charles Hulseberg have hereunto set my hand
and seal this twenty first day of August in the year of our Lord one
thousand sight hundred and aicht v tuzo
CHAS. HULSEBERG. (L.S.)