IMPROVEMENTS IN THE CONSTRUCTION OF BOILERS FOR HEATING CONSERVATORIES GREENHOUSES AND OTHER ANALOGOUS PURPOSES
Year: 1884

page_text: I JOHN WATSON of St Albans in the County of Herts do hereby declare the
nature of my Invention for IMPROVEMENTS IN THE CONSTRUCTION OF BOILERS
FOR HEATING CONSERVATORIES GREENHOUSES AND OTHER ANALOGOUS PURPOSES
to be as follows:-
The object of my invention is to construct boilers of that description known as
"Watsons suspension boiler" for heating conservatories greenhouses and other
analogous purposes in a simple and efficient manner and with a large heating
surface.
I construct such boilers of wrought or cast iron or other suitable metal the body
of the boiler being horizontal, and having an internal horizontal flue. The sides
of the boiler rise diagonally outwards towards the upper part of an angle of
about 75 degrees or thereabouts. The two sides are then turned inwards at an
angle of about 60 degrees up to the crown which is horizontal but I do not confine
myself to these angles as they may be very much varied. The walls bottom and
crown are so constructed as to form water spaces as usual with horticultural boilers.
The metallic surfaces of my improved boilers are all utilized as heating surfaces
the furnace being placed underneath and the heating gases passing by means of
ordinary flues to and through the internal flue to the chimney.
In constructing my improved boilers of large size 1 provide an additional amount
of heating surface by means of a central waterway, of a wedge form, attached to
the crown and running the whole length of the internal flue. In small boilers this
addition may be dispensed with to save expense.
The usual fittings, pipes and plugs are fitted to provide for the circulation of the
water, blowing off and cleansing the inside of the boiler.
11

page_text: I JOHN WATSON of St. Albans in the County of Herts, do hereby declare the
nature of my said Invention for IMPROVEMENTS IN THE CONSTRUCTION OF
BOILERS FOR HEATING CONSERVATORIES, GREENHOUSES AND OTHER ANALOGOUS
PURPOSES, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
The object of my invention is to effect improvements in boilers of the description
known as "Watson's suspension boiler" for heating Conservatories, Greenhouses
and other analogous purposes and to construct the same in a simple and efficient
manner, and with a large heating surface.
I construct such boilers of wrought or cast iron or other suitable metal, the body
of the boiler being horizontal, and having an internal horizontal flue. The sides of
the boiler rise diagonally outwards towards the upper part, for about two thirds of
the height the two sides are then turned inwards at a considerable angle up to
the crown, which is horizontal; but I do not confine myself to any particular angles,
as they may be very much varied-The walls, bottom and crown are so constructed
as to form water spaces, as usual with horticultural boilers. The metallic surfaces
of my improved boilers are utilized as heating surfaces, the furnace being placed
underneath the boiler and the heating gases circulate outside the boiler and also
through the central flue communicating heat to the plates before passing away by
the chinney.
In constructing my improved boilers of large size, I provide an additional amount
of heating surface by means of a central water way of a wedge form, attached to
the crown and running the whole length of the internal flue. In small boilers this
addition may be dispensed with to save expense.
The usual fittings, pipes, and plugs are fitted, to provide for the circulation of
the water, flowing off and cleansing the inside of the boiler.
And in order that my said invention may be clearly understood, reference is
hereby made to the accompanying drawings, in which similar letters of reference
indicate corresponding parts.
Fig. 1 is an end view of my improved boiler in position in the furnace, with the
front wall removed-Fig 2 is a cross sectional view of the same-Fig 3 shews
another formation of crown to the boiler being made semicircular or thereabouts
at as shewn. Fig: 4 is an end view shewing a method of obtaining increased
heating surface when required and Fig 5 is a perspective view of Fig: 4-a a is
the brickwork, b the furnace bars-c the boiler, is the internal flue, d d are
longitudinal tubes to increase the heating surface-f is a manhole and cover, and g
is the flue.
In Fig 4 an additional central waterway h is shewn, for increasing the heating
surface when necessary.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1 The use of boilers having inclined heating surfaces and internal flues arranged
and constructed substantially as and for the purposes hereinbefore described and
shewn in Figs 1 and 2 of the drawings.
2. The use of Boilers with a central waterway h in the internal flue-substantially
as hereinbefore described and shewn in Fig 3 of the drawings.

page_text: 3 The several arrangements and combinations of parts together forming my
improvements in the construction of boilers for heating conservatories, green
houses and other analogous purposes, hereinbefore described and shewn on the
drawings or any mere modification thereof.
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