IMPROVE- MENTS IN APPARATUS FOR WARMING BUILDINGS IN WHICH HIGH-PRESSURE STEAM ENGINES ARE EMPLOYED
Year: 1867

page_text: LETTERS PATENT to William Anthony Herring, of Chertsey, in the County
of Surrey, Engineer and Ironfounder, for the Invention of "IMPROVE-
MENTS IN APPARATUS FOR WARMING BUILDINGS IN WHICH HIGH-PRESSURE
STEAM ENGINES ARE EMPLOYED."
Sealed the 6th March 1868, and dated the 4th December 1867.
PROVISIONAL SPECIFICATION left by the said William Anthony Herring
at the Office of the Commissioners of Patents, with his Petition, on the
4th December 1867.
I, WILLIAM ANTHONY HERRING, of Chertsey, in the County of Surrey,
Engineer and Ironfounder, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN APPARATUS FOR WARMING BUILDINGS IN WHICH HIGH-
PRESSURE STEAM ENGINES ARE EMPLOYED," to be as follows:-
This Invention has for its object improvements in apparatus for warming
buildings in which high-pressure steam engines are employed. For this
purpose I cause the exhaust steam from the engine to pass through a coil of.
pipe of such diameter that the back pressure on the engine may be insignificant.
This coil I enclose in a cistern or close tank with which pipes for warming the
building are connected. The outlet pipe passes away from the top of the
cistern or tank, then circulates through the rooms or buildings to be warmed
in the ordinary way of a hot-water apparatus, and afterwards the pipe returns
the same water in a comparatively cold state to the bottom of the cistern or
tank; this water remains in the cistern or tank until it again becomes hot,

page_text: and then it again circulates through the pipes of the hot-water apparatus.
In this way the rooms or buildings are warmed without other fuel than that
necessary to keep the high-pressure steam engine at work, and at the same
time an economy of water is effected, which sometimes is of importance, the
exhaust steam from the engine being condensed into a pure water which is
returned into the boiler.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Anthony Herring in the Great Seal Patent Office
on the 4th June 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ANTHONY HERRING, of Chertsey, in the County of Surrey, Engineer and Iron-
founder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of December, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said William Anthony Herring, Her special licence that I, the said William
Anthony Herring, my executors, administrators, and assigns, or such
others as I, the said William Anthony Herring, my executors, adminis-
trators, and assigns, should at any time agree with, and no others, from time
to time, and at all times thereafter during the term therein expressed, should
and lawfully might make, use, exercise, and vend, within the United Kingdom
of Great Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for "IMPROVEMENTS IN APPARATUS FOR WARMING BUILDINGS IN
WHICH HIGH-PRESSURE STEAM ENGINES ARE EMPLOYED," upon the condition
(amongst others) that I, the said William Anthony Herring, my executors,
or administrators, by an instrument in writing under my, or their, or one of
their hands and seals, should particularly describe and ascertain the nature of
the said Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Anthony Herring, do
hereby declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement thereof, that is to say :-
This Invention has for its object improvements in apparatus.for warming

page_text: for the circulation of the water being for the most part omitted; Figures 3
and 4 are similar views, with portions of the external casing broken away;
Figure 5 is an end view similarly represented; Figure 6 is a transverse
section of the apparatus.
a, a, is a tank fitted with a close cover; b is a pipe passing through one end
of the tank by a water-tight joint, and set into a socket on the box c. On the
other side of this box are a number of sockets c*, c*, into which pipes d, d,
b
The other ends of these pipes are similarly fitted into sockets c** in
another box c' at the other end of the tank. The boxes c and c¹ have partitions
in them so arranged that the steam entering the box c by the pipe 6 passes
simultaneously by the three pipes d in the top row, and at the front to the
box c¹, thence it passes across the box and returns by three other pipes d at
the back to the box c, and so on. The pipes are all inclined downwards in
the direction of the flow, and at the bottom the three pipes d at the back are
collected into a single pipe, and this is in connection with the pipe e, which
passes out through the bottom of the tank by a water-tight joint, and from it
the condensed water is received, and usually it is forced back into the steam
boiler. The tank a is kept constantly full of water, and is in communication

page_text: with a coil or set of warming pipes, of which is the outflow pipe and g is the
return pipe. The arrangement of the warming pipes will depend on the
construction of the building to be warmed, they will, however, be applied as is
usual when warming with hot water pipes.
The way of making the joints between the boxes c and c¹ and the pipes d is
shown full size at Figure 7, in which C is a part of the box; C, its sockets;
C², its transverse partitions; and C³, a back cover secured by bolts, and made
tight to the partitions by a packing. X, X, are india-rubber rings placed in
the sockets around the pipes, and Y is a packing; it may be of hemp, gold
size, and red lead, filled in between the india-rubber rings; an elastic and
water-tight packing is thus made, which allows the pipes to expand and con-
tract freely as they are heated and cooled.
The apparatus shewn in the Drawing is adapted to a six-horse engine; the
warming coil should expose from 600 to 1,000 feet of surface. There is in it
about 100 feet of condensing surface. Where so large an extent of heating
surface is not required the water coil may be connected with a tank out of
,doors in which the water may cool.
A similar arrangement is applicable in ships or vessels propelled by high-
pressure engines, and in this case the pipes may be connected with the
external water after passing any desired distance within the ship or vessel.
It will be understood that the shape of the parts shewn in the Drawings
may be varied without departing from my Invention.
In witness whereof, I, the said William Anthony Herring, have here-
unto set my hand and seal, this Third day of June, in the year of our
Lord One thousand eight hundred and sixty-eight.
WILLIAM ANTHONY HERRING. (L.s.)