AN IMPROVED APPARATUS FOR HEATING APARTMENTS, CONSERVATORIES, AND BATHS
Year: 1866

page_text: LETTERS PATENT to George Shrewsbury, of Lower Norwood, in the
County of Surrey, Ironmonger, for the Invention of "AN IMPROVED
APPARATUS FOR HEATING APARTMENTS, CONSERVATORIES, AND BATHS."
Sealed the 25th June 1867, and dated the 31st December 1866.
PROVISIONAL SPECIFICATION left by the said George Shrewsbury at
the Office of the Commissioners of Patents, with his Petition, on the
31st December 1866.
I, GEORGE SHREWSBURY, of Lower Norwood, in the County of Surrey,
Ironmonger, do hereby declare the nature of the said Invention for "AN
IMPROVED APPARATUS FOR HEATING APARTMENTS, CONSERVATORIES, AND BATHS,"
to be as follows:-
This Invention relates to an improved apparatus for heating apartments,
conservatories, and baths by means of gas.
The Invention consists of an upright outer casing of a cylindrical or other
suitable form enclosing a vertical boiler of smaller diameter and closed at top
and bottom, through which pass vertically pipes or tubes which are open at
top and bottom; below this boiler I place a gas tube or pipe bent to an
annular shape provided with one ordinary fish-tail or other burner for each
tube;
each of the burners is enclosed in an upright metallic tube about two or

page_text: three inches long pierced with holes and lined with wire gauze, so as to admit a
plentiful supply of atmospheric air to the burners, and prevent the gas from
igniting at the bottom of the tube; these burners effect the total consumption
of the gas, and prevent the apparatus from becoming clogged by the collection
of soot. The ring pipe with its burners is constructed so as to turn on a joint
in order that it may be brought outside the casing for lighting and then
turned in to its proper position beneath the tubular boiler. It will be observed
that the heat and flame from the gas pass through the tubes which are
surrounded by the water in the boiler, and thus the water becomes heated.
The boiler is provided with flow and return pipes connected' thereto near the
top and bottom by ordinary union joints. Above the boiler is a metal box of
rather smaller diameter than the outer case and enclosing a piece of fire-brick
to deflect the heat down again and prevent it from radiating upwards, and
above this fire-brick is a layer of sand or other non-conductor of heat for
the same purpose. The whole is enclosed by a lid or cover, in the centre
of which is an outlet pipe for carrying off the products of combustion.
SPECIFICATION in pursuance of the conditions of the Letters Patent; filed
by the said George Shrewsbury in the Great Seal Patent Office on the
29th June 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
SHREWSBURY, of Lower Norwood, in the County of Surrey, Ironmonger, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirty-first day of December, in the year of our Lord
One thousand eight hundred and sixty-six, in the thirtieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
George Shrewsbury, Her special licence that I, the said George Shrewsbury,
my executors, administrators, and assigns, or such others as I, the said George
Shrewsbury, my executors, administrators, 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 "AN IMPROVED
APPARATUS FOR HEATING APARTMENTS, CONSERVATORIES, AND BATHS," upon the
condition (amongst others) that I, the said George Shrewsbury, my executors
or administrators, by an instrument in writing under my, or their, or one of

page_text: 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 George Shrewsbury, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement in writing, and on reference to the accompanying Sheet of Drawings,
that is to say-
This Invention relates to an improved apparatus for heating apartments,
conservatories, and baths by means of gas.
The Invention consists of an upright outer casing of a cylindrical or other
suitable form enclosing a vertical boiler closed at top and bottom, through
which pass vertically pipes or tubes which are open at top and bottom;
below this boiler I place a gas tube or pipe bent to an annular shape provided
with one ordinary fish-tail or other burner for each tube; each of the burners
is enclosed in an upright metallic tube about two or three inches long pierced
with holes and lined with wire gauze, so as to admit a plentiful supply of
atmospheric air to the burners, and prevent the gas from igniting at the
bottom of the tube; these burners effect the total consumption of the gas,
and prevent the apparatus from becoming clogged by the collection of soot.
The ring pipe with its burners is constructed so as to turn on a joint in order
that it may be brought outside the casing for lighting and then turned into
its proper position beneath the tubular boiler. It will be observed that the
heat and flame from the gas pass through the tubes which are surrounded by
the water in the boiler, and thus the water becomes heated; the boiler is
provided with flow and return pipes connected thereto near the top and
bottom by ordinary union joints. Above the boiler is a metal box of rather
smaller diameter than the outer case, and enclosing a piece of fire-brick to
deflect the heat down again and prevent it from radiating upwards, and above
this fire-brick is a layer of sand or other non-conductor of heat for the same
purpose. The whole is enclosed by a lid or cover in the centre of which is
an outlet pipe for carrying off the products of combustion.
Such being the nature and object of my said Invention for "An Improved
Apparatus for Heating Apartments, Conservatories, and Baths," I will now
proceed to describe more in detail the manner in which the same is to be or
may be performed or carried into practical effect; and in order that the same
may be distinctly understood I have annexed hereunto a Sheet of Drawings

page_text: illustrative thereof, and have marked the same with figures and letters of
reference corresponding with those in the following explanation thereof,
that is to say:-
In the annexed Drawing Figure 1 is a vertical section through about the
central line of the apparatus; Figure 2 is a transverse or horizontal section
through the line A, B, in Figure 1, and Figure 3 is a similar section through
the line C, D, in the same Figure. Similar letters of reference are marked
upon corresponding parts of the apparatus in the several Figures.
a, a, is the outer casing enclosing the vertical boiler b, b, which is closed
at top and bottom, and has three tubes c, c, c, passing through it in a vertical
direction; these tubes are open at top and bottom, their upper ends or
orifices being contracted as shewn in Figure 1. I may here remark that
although three tubes and three gas burners are here shewn and described, for
the sake of illustration, the number of the same may be increased or diminished
according to the size of the apparatus and the particular purpose to which it
is to be applied. The gas tube d, d, (with its burners e, e, one below each
tube) is mounted upon a socket at f,f, so that it can be brought outside the
casing a, a, through the door 9, 9 for lighting, as shewn by dotted lines in
Figure 3, and then turned into its original position beneath the tubes of the
boiler; h, h, and i, i, are the flow and return pipes for the water; k, k, is a
metal box above the boiler, the lower half of which is filled with fire-brick l, l,
and the upper part with sand, stones, or other non-conductor of heat m, m,
for the purpose of deflecting the heat and preventing its loss from vertical
radiation ;n, n is the top or cover, in the centre of which is the outlet or
flue pipe o, o, for carrying off the products of combustion.
Figure 4 represents on a larger scale a plan view, and Figure 5 a vertical
section of the arrangement of gas burners which I propose to employ to heat
the above-described boiler, and Figures 6 and 7 are similar views of a
modification of the same.
In Figures 4 and 5, the gas pipe d, d is bent into an annular form, and
has screwed into it three ordinary gas burners or nipples p, p, each of which
is enclosed in a tube e, e, pierced with holes 9, 9, near the bottom, so as to
admit a plentiful supply of atmospheric air, and these tubes are lined with a
wire gauze cylinder r, r, closed with wire gauze at the top to prevent the gas
from igniting at the bottom of the tube.
In the modification shewn at Figures 6 and 7 a discoidal box 8, 8, is sub-
stituted for the annular part of the pipe d, d, the nipples p, p, are dispensed
with, the tubes being provided with necks at the bottom which screw into
the box, and the wire gauze cylinder r, r, is open at the top, the tubes e, e,

page_text: being themselves closed at the top by a screw cap t, t, which is perforated
with small holes all round.
Having now described the nature and object of my said Invention for "An
Improved Apparatus for Heating Apartments, Conservatories, and Baths,"
together with the manner in which the same is to be or may be performed or
carried into practical effect, I would remark in conclusion that I claim as my
Invention the improved apparatus shewn in the annexed Drawings and above
described, or any mere imitation or modification thereof, constructed and
operating in substantially the same or a similar manner.
In witness whereof, I, the said George Shrewsbury, have hereunto
set my hand and seal, this Twenty-eighth day of June, in the year of
our Lord One thousand eight hundred and sixty-seven.
Witness,
GEORGE DAVIES,
Patent Agent,
1, Serle St., Lincoln's Inn.
G. SHREWSBURY. (L.S.)