IMPROVEMENTS IN APPARATUS FOR HEATING PROVISIONAL SPECIFIC
Year: 1881

page_text: LETTERS PATENT to Thomas Drake, of Huddersfield, in the County of York,
Gentleman, for an Invention of
IMPROVEMENTS IN APPARATUS FOR HEATING
PROVISIONAL SPECIFICATION left by the said Thomas Drake at the Office
of the Commissioners of Patents on the 29th June 1881.
THOMAS DRAKE, of Huddersfield, in the County of York, Gentleman. ." IMPROVE-
MENTS IN APPARATUS FOR HEATING AND BOILING WATER FOR DOMESTIC AND
OTHER PURPOSES,"
This Invention relates to a new construction and arrangement of apparatus for
heating and boiling water for domestic or other purposes. The form of apparatus
employed consists of an outer casing or shell, within which is placed two pipes or
tubes, having their upper ends closed and their lower ends open. Passing through
these tubes towards their bottom ends is a horizontal pipe, having a burner
perforated with a number of holes placed within each tube. Cold water is
introduced through the outer casing by means of a pipe which is coiled around the
outside of the first upright tube, and is thence carried forward and coiled around
the second upright tube, and is afterwards coiled again to fill.the space of the casing
above the two upright tubes, and thence to the outlet pipe. The water in the
coiled pipes is heated by means of jets of gas, which are made by a series of
holes formed in a spiral direction around the two upright tubes, and by other lights
from the top of the upright tubes. For the purpose of lighting the gas a horizontal
pipe passing over the top of the tubes is employed, having a slit or groove formed
therein, so that when a light is applied to the slit or grooved pipe the light spreads
along the slit, and the gas passing through the top of each upright tube is lighted.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Drake in the Great Seal Patent Office on the 29th
December 1881.
"s
THOMAS DRAKE, of Huddersfield, in the County of York, Gentleman. IMPROVE-
MENTS IN APPARATUS FOR HEATING AND BOILING WATER FOR DOMESTIC AND
OTHER PURPOSES."
This Invention relates to a new construction and arrangement of apparatus for
heating and boiling water for domestic and other purposes. The apparatus consists
of an outer casing or shell, within which are placed two pipes or tubes having
their upper ends closed and their lower ends open. Passing horizontally through
these tubes towards their bottom ends is a gas pipe having a burner branching
therefrom about the centre of each tube. The burner has a solid concave cap
which projects slightly so as to form a rim, and a series of holes are made in the
burner at an angle of 45°, so that the gas as it escapes from the perforations in the
side of the burner is thrown up against the inner sides of the two pipes at the said
angle of 45°.
Around each of the vertical tubes is a coil of metal piping connected together
and communicating with a third coil of larger dimensions placed in the upper
portion of the casing. The water in the coiled pipes is heated by means of jets
of gas which issue from a series of holes formed spirally around the two upright
tubes.
In order that my Invention may be more fully understood, I herein give reference
to the accompanying Sheet of Drawings illustrative thereof.
Fig. 1 represents an elevation of the external parts of the apparatus; Fig. 2 is a
vertical section shewing the interior thereof; Fig. 3 is a plan view of the upper or
large coil; and Fig. 4, a sectional plan taken about the letter A. The casing, which
may be of sheet iron or other suitable metal, is open at the bottom and closed
at the top by a perforated lid or cover B, other perforations being formed as
indicated by the darkened circles in Fig. 1. The two pipes or tubes are shewn
at C and D, both of which are supported by a bar or bearer E bolted to the sides
of the casing. These pipes are closed at the top and open at the bottom, and have
a series of perforations arranged spirally about the portions thereof above the bearer E.
Passing through both these pipes is a gas pipe F having burners G, which supply
gas thereto, the gas being thrown against the tubes rises and escapes at the spiral
perforations, and is there ignited by placing a light to the hole H formed for
that purpose in the casing. It will be seen that the gas is consumed on Bunsin's
principle, air being admitted at the bottom of the tubes and mixing with the gas
as it escapes from the burners G. Around the pipes C and D is coiled the pipe I
for containing the water, and this pipe is carried to the upper part of the casing
and there formed into a solid coil J, being supported by cross bars K suspended by
rod and bolt from the perforated partition S. The pipe, as shewn in Fig. 2,
commences at a (which is the inlet), being first wound into a helix around the
pipe D, on reaching the top of which it is bent downwards at b, and coiled around
the pipe C. Thence commencing from the centre it is coiled in a series of gradually
enlarging spirals J, the disengaged end passing finally down the centre, as shewn at c
in Fig. 3, to the outlet P. The inlet end of the pipe is provided with two taps, the
principal one L being provided with an index plate and pointer d, and corresponds
with the outlet tap M. Both these taps are so constructed that it is impossible to
close them entirely. When in use they are to be adjusted according to the demand
for water, and the supply of gas regulated accordingly. To put the apparatus into
operation the inlet tap must be connected with the water service pipe, being turned

page_text: off as far as the pointer & will allow it to be, and the gas lighted. The water will
commence to travel through the pipe in the direction above described, and will
boil before reaching the outlet M; and as long as the water is supplied by the
service pipe to the coils and the gas remains lighted, the supply of boiling water
will continue. By opening the inlet tap L a little wider the quantity and
temperature of the water can be regulated.
The outlet tap is provided with two ways or passages, so that the same apparatus
may serve for different rooms in one building, the tap being so constructed that
when one port is opened the other port is closed, by which means explosion from
confined or superheated water is prevented.
The coils I are preserved from contact with the tubes C and D by means of ribs
or projections N formed at the top and bottom thereof. The laps of the coils are
also formed clear of each other, so as to admit a complete circulation of the heated
gases around every portion of the pipe.
Having now described the nature of my Invention, and described by the aid
of Drawings how the same may be carried into practice, I would have it
understood that I do not limit myself to the precise details of construction or
configuration of the parts I have described and shewn, as the same may be
variously modified without departing from the nature of my said Invention, but
what I do claim and desire to be secured to me is,-
Firstly. The use and employment of the solid coil J in combination with one or
more smaller coils I passing around one or more tubes C, D, for the purpose,
substantially as herein shewn and described.
Secondly. The use and employment of the solid coil J when used in combination
with one or more tubes C and D, for the purpose herein described.
Thirdly. The general combination and arrangement of the parts, herein shewn
and described for heating and boiling water.
In witness whereof, I, the said Thomas Drake, have hereunto set my hand and
seal, this Twenty seventh day of December, in the year of our Lord One
thousand eight hundred and eighty one.
Witness,
A. B. CROSSLEY,
Tasker & Crossley,
Patent Agents,
Halifax & Huddersfield.
THOS. DRAKE. (L.S.)