Improvements in Apparatus for Heating by Hot Water.
Year: 1889

page_text: Date of Application, 10th Jan., 1889
Complete Specification Left, 10th Oct., 1889-Accepted, 16th Nov.,
1889
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Heating by Hot Water.
I, LOFTUS PERKINS, of 6 Seaford Street, Grays Inn Road, in the County of
Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
My improvements relates to apparatus in which the water employed for conveying
heat is contained within a closed system of pipes generally known as Perkins hot
water heating apparatus.
With such apparatus as heretofore constructed it has always been necessary that
the coil or part of the system which is to be beated by the furnace should be below
the level of the pipes by which the heat is distributed.
The object of my invention is to construct heating apparatus of this kind in such
manner that the coil and furnace may be placed at a level above the heat distributing
pipes.
To admit of this I lead a pipe upwards from the coil for a distance and then
make it to open into an upright tube or vessel of larger diameter. The upper part
of this tube I make to serve as the expansion tube which is to allow for the expansion
of the water as it becomes heated.
The heated water after entering the expansion tube quickly becomes more or less.
cooled owing to the comparatively large diameter and exposed outer surface of this
tube.
From the bottom of the tube a pipe is led away downwards to the pipes which
are to be heated. The return pipe from the heating pipes I couple to bottom of the
furnace coil.
If the pipes to be heated are at a considerable distance below the level of the
furnace coil then the return pipe to the bottom of the furnace coil may be caused to
rise up through a tube of larger diameter through which heated water is descending
from the bottom of the expansion vessel.
Heating apparatus of this kind is adapted for heating buildings in places where
it is inconvenient for the furnace to be below the level of the floor which carries
the heat distributing pipes-and for heating railway carriages with a furnace placed
above the carriage roof and other such like uses.
Dated this 10th day of January 1889.
CARPMAEL & Co.,
Arante
COMPLETE SPECIFICATION.
Improvements in Apparatus for Heating by Hot Water.
I, LOFTUS PERKINS, of 6, Seaford Street, Grays Inn Road, in the County of
Middlesex, 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 :-
My improvements relate to apparatus in which the water employed for conveying
heat is contained within a closed system of pipes generally known as Perkins hot
water heating apparatus.
With such apparatus as heretofore constructed it has always been necessary that
the coil or part of the system which is to be heated by the furnace should be below
the level of the pipes by which the heat is distributed.
The object of my invention is to construct heating apparatus of this kind in such
manner that the coil and furnace may be placed at a level above the heat distributing
pines.

page_text: To admit of this 1 lead a pipe upwards from the coil for a distance and then make
it to open into an upright tube or vessel of larger diameter. The upper part of this
tube I make to serve as the expansion tube which is to allow for the expansion of
the water as it becomes heated.
From the bottom of the tube a pipe is led away downwards to the pipes which are
to be heated. The return pipe from the heat distributing pipes I couple to the bottom
of the furnace coil.
The heated water as it rises up from the furnace coils and enters the expansion
tube becomes freed from bubbles and somewhat cooled consequently the body of
water descending through the expansion tube to the heat distributing pipes is
heavier than the column of water in the furnace coils and the pipe that rises from it
and so the heated water is caused to circulate through the pipes.
If the pipes to be heated are at a considerable distance below the level of the
furnace coil then the return pipe to the bottom of the furnace coil may be caused
to rise up through a tube of larger diameter through which heated water is descending
from the bottom of the expansion vessel.
Heating apparatus of this kind is adapted for heating buildings in places where
it is inconvenient for the furnace to be below the level of the Hoor which carries
the heat distributing pipes-and for heating railway carriages with a furnace
placed above the carriage roof and other such like uses.
The drawing Figure 1 shows an elevation partly in section of apparatus con-
structed according to my invention.
A is a stove of ordinary construction for heating the coil B of the closed system
of pipes C is a pipe rising up from the top of the coil and opening into the tube D
of larger diameter. This tube is only filled with water to a short distance above
the point where the pipe C opens into it so that the upper part of the tube may
act as the expansion vessel of the system of pipes. From the bottom of the tube Ď
a pipe is led away downwards to the heat distributing pipes E and from these a
return pipe F passes to the bottom of the coil B.
At Figure 2 I have shown the return pipe made of larger diameter than the pipe F
and the pipe F led downwards through it so that the water in the upward return
pipe may be heated by the water which is descending to the heat distributing pipes.
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 closed system of hot water heating pipes in which the pipe passing from
the coil or part to which heat is applied is led upwards into an upright or it might
he somewhat inclined tube of larger diameter from the bottom of which a pipe is
led downwards to heat distributing pipes which are below the level of the heated
coil and from which a return pipe is led upwards to the bottom of the heated coil.
2. The construction of the apparatus substantially as herein before, described with
the upper part of the upright tube serving as the expansion vessel.
3. The construction of the apparatus substantially as described with the upward
return pipe heated by the water which is descending to the heat distributing pipes.
Dated this 7th day of October 1889.
LOFTUS PERKINS.