Improvements in or connected with Hot Water Boilers.
Year: 1894

page_text: Improvements in or connected with Hot Water Boilers.
I, HORACE POSTLE READ, of Blofield, near Norwich, in the County of
Norfolk, Market Gardener, do hereby declare the nature of this invention to be as
follows:-
My improvements relate to boilers of the sectional type and are adapted for
horticultural and other similar uses.
In order that the nature of my invention may be readily understood I shall
proceed to describe it with reference to the accompanying drawings which illustrate
a contemplated form of my invention and in which drawings similar parts are
indicated by similar letters of reference.
In the said drawings,
Figure 1 is a side elevation partly in section of the said contemplated form of
my invention,
Figure 2 is an end elevation with the cover plates e² c* removed.
It will be seen that my boiler is of the sectional type. The water tubes are
indicated by the letters A. Three sections of tubes are shown those lettered a¹
constituting one section those lettered a² another section and those lettered a³ a
third section. It will be noticed that the water boxes B B¹ are divided into four
sections 61 62 63 the said water boxes being closed externally by the cover
plates c¹². D is the furnace space, E the supply pipe and FF exit pipes
(say heating pipes) passing to hot houses or other buildings or apartments to be
heated. The back plates G of the water boxes are constructed with annular
recesses g surrounding the tube holes and the ends of the tubes when the latter
are in position. The said annular recesses are designed for the reception of
the packing employed to cause the tubes to fit in a water-tight manner in the
water boxes.
The circulation of the water is as follows.
into the water box through the pipes a¹ to
water box 63 through pipes a³ to water box
or spaces to be heated.
Entering by supply pipe E it passes
the water box 62 through pipes a² to
and thence through F to the buildings
It will be seen that by means of my invention sections can easily be added for
any desired purpose and further that in the event of any renewals or repairs being
required such can easily be effected as when the cover plates are removed not only
the ends of the tubes but the whole of the packing of the same are freely exposed
for manipulation.
3
1004

page_text: Improvements in or connected with Hot Water Boilers.
I, HORACE POSTLE READ, of Blofield, near Norwich, in the County of
Norfolk, Market Gardener, 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:-
My improvements relate to boilers of the sectional type and are adapted for
horticultural and other similar uses.
In order that my invention may be readily understood I shall proceed to describe
it with reference to the accompanying drawings in which similar parts are indicated
by similar letters of reference.
In the said drawings,
Figure 1 is a side elevation partly in section of the said form of my invention,
Figure 2 is an end elevation with the cover plates c² 4 removed.
Figure 3 is an elevation of a front water box of a small size of my boiler with
the cover removed.
Figure 4 is a similar elevation of a rear water box of same.
Figure 5 is a sectional view showing a modified and preferable form of recess
with tube therein.
It will be seen that my boiler is of the sectional type. The water tubes are
indicated by the letters A. Three sections of tubes are shown those lettered a
constituting one section those lettered a² another section and those lettered a³ a
third section. It will be noticed that the water boxes B B are divided into four
sections 61 62 63 64 the said water boxes being closed externally by the cover
plates c¹² cc. D is the furnace space E the supply pipe and FF exit pipes,
say heating pipes passing to hot houses or other buildings or apartments to be
heated. The back or inner plates G of the water boxes are constructed with
annular recesses 9 surrounding the tube holes and the ends of the tubes when the
latter are in position. The said annular recesses are designed for the reception of
the packing employed to cause the tubes to fit in a water-tight manner in the
water boxes.
In Figures and 2 it will be seen by the lines that the water boxes consist of
separate and distinct boxes. This however is not necessary in practice when the
boilers are small as in that case the water boxes may be integral with one another
and their compartiments simply shut off from one another by means of partitions.
In Figure 3 it will be seen that the front water boxes without the cover plates
are in a single casting and that in this case the two water boxes and are
separated by a mere partition. They do not consist of separate castings as in the
case of a large boiler as indicated in Figures 1 and 2. J is a boss projecting
from the hack or inner plate G forward to the cover d (see Figure 1) to which it
is bolted, the fore surface of the said boss being furnished with tapped holes for
that purpose. The said boss constitutes the mouth or fore part of the furnace.
In Figure 4 the part K of the back plate of the lower rear water box is shown
plain, this being the part to which no tubes extend from the front water box.
In Figure 5 show in section a convenient form of recess for packing which I
prefer on the whole to that shown in Figure 1. In this case the recess is conical
tapering from an apex on the tube side of the said back plate towards the water
box side of the said back plate.
I desire it to be understood that I do not limit myself to any particular shape of
recess provided it opens out towards the interior of the water box; and that
any suitable form of packing may be employed in such recesses.
The circulation of the water is as follows.
into the water box through the pipes a to
Entering by supply pipe E it passes
the water box through pipes a to

page_text: water box 6³ through pipes a³ to water box 6 and thence through F to the buildings
or spaces to be heated.
It will be seen that by means of my invention sections can easily be added for
any desired purpose and further that in the event of any renewals or repairs being
required such can easily be effected as when the cover plates are removed not
only the ends of the tubes but the whole of the packing of the same are freely
exposed for manipulation.
When I make my boiler with tubes exceeding say six feet in length I sometimes
make the furnace extend from end to end with an opening for feeding and stoking
at both ends. In that case the back or inner plate of the rear water box would
have a mouth such for example as that marked J in Figure 3.
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. A boiler constructed substantially as and for the purpose set forth.
2. In a boiler, a water box having orifices through the back plate for the
reception of the ends of the tubes, the said orifices being recessed or bevelled
towards the inner surface of the water box for the reception of packing, and the
said water box being fitted with a detachable cover plate substantially as and for
the purposes set forth
Dated this 5th day of September 1895.
For the Applicant,
J. G. LORRAIN, M. Inst. E.E., M.I. Mech. E.,
Norfolk House, Norfolk Street, Strand, London, W.C.,
Chartered Patent Agent.