Year: 1894

page_text: Date of Application, 10th July, 1894'
Complete Specification Left, 10th Apr., 1895-Accepted, 22nd June, 1895:
I WILLIAM TALLETT of 40 Divinity Road Oxford, Locksmith, do hereby
declare the nature of this invention to be as follows:-
This invention' refers to the class of water-heaters used for rapidly heating, water
for use in baths and for like purposes.
It consists of a cylinder outside which is an annular space for water. At the
top of the cylinder is a copper d'ome also containing water in communication. with
the annular water-space. Inside the cylinder is a powerful atmospheric gas burner
and above is a flue-pipe passing through the copper dome.
A triple coil of copper or other pipes connected at the lower end to the water
supply, wind's upwards pyramid' fashion, that is to. say, each coil is of smaller
diameter than the one beneath it. This coil occupies the centre of the cylinder
above the atmospheric burner:
At the summit of the coil the three pipes which compose it connect to a single
pipe which is carried up to a horizontal ring on the top of the flue pipe. This
ring is perforated and allows heated. water to descend outside the flue, into
the copper dome and' thence into the annular water space, whence it flows out by
an ordinary outlet pipe to the bath.
It will be seen that the arrangement described' ensures great economy of heat,
for not only is the water heated as it ascends the pyramidal coil, but also in
descending outside the flue pipe, and in the copper dome which rests on the cover
of the cylindrical chamber, and it also receives further warmth from the inner wall
of the annular water space.
The gas burner is furnished with a small jet of pure gas regulated by a separate
tap. This jet serves as a pilot light which when lit ignites the atmospheric
burner.
The gas supply tap is fixed beneath the water supply tap and both are
connected so that by turning a lever handle the two taps are turned on and off
simultaneously, the gas supply being proportioned to the amount of water to be
heated: Thus it is impossible to leave the gas burner on when the water is
turned off.
Ventilating air holes are provided for the burner, and the heater is placed on
suitable legs or a stand, and a portable pan is placed beneath to receive
condensation water.

page_text: I, WILLIAM TALLETT, of 40 Divinity Road Oxford, Locksmith, 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':-
This invention refers to the class of water-heaters used for rapidly heating water
for use in baths and for like purposes.
It consists of a cylinder surmounted by a flue pipe outside which is an annular
space for water enclosed by an outside cylinder and flue pipe. At the top of the
inner cylinder is a copper dome also containing. water in communication with the
annular water space.
:
Inside this cylinder is a powerful atmospheric gas burner and above is a flue pipe
passing through the copper dome.
A triple coil of copper or other pipes connected at the lower end to the water
supply winds upwards, spiral or pyramid fashion, that is to say, each coil is of
smaller diameter than the one beneath it. This coil occupies the centre of the inner
cylinder above the atmospheric burner.
At the summit of the coil the three pipes which compose it connect to a single
pipe which is carried up to a horizontal ring on the top of the flue pipe.
This ring is perforated and allows heated water to descend outside the flue into
the copper dome and thence into the annular water space whence it flows out
by an ordinary pipe to the outlet.
I will now describe the invention with reference to the accompanying drawing
in. which
Fig. 1 shows a vertical sectional elevation of my water heater.
a is a vertical cylinder surrounded by an outside casing a'.
The interior of the cylinder a forms a hot air chamber, and encloses the tubular
hot water coils b. b.
b. b. are the hot water tubes arranged pyramidal fashion, the water in same being
heated by the gas burner c beneath.
The tubes emanate from a small dome c¹ on top of a shallow hot water
chamber d.
Thus as the temperature rises the water is forced higher and higher up through
the tubes and the top of cylinder a. after which it is drawn off as hereafter
described.
e is the cold water supply pipe furnished with a cock e¹ at its outer end, and a
check valve e for regulating the quantity of water in proportion to the gas supply.
fis the gas supply pipe with the usual air bulb leading to the atmospheric gas
burner c beneath cylinder. care ventilating holes formed in the outside casing a¹.
just above the gas burner c to increase the draught.
is the gas cock. The two cocks el f¹ (gas and water) are connected together
and operated simultaneously by a handle g so that there is no danger of the gas
being lit before the water supply is turned on, and the supply of gas is regulated to
the quantity of water to be heated.
h. h. are legs to hold up the water heater.
is a condensed water pan placed under the gas burner c.
is the chimney to allow the gases of combustion to escape.
is a dome shaped enlargement of the chimney ; formed in same just above the
top of cylinder a.
is a telescopic prolongation of chimney j.
The chimney is surrounded by an outer and higher chimney k, thus preventing
any escape of heat.

page_text: The tubes b. b. as shewn are arranged in triple tiers which are led into a small
junction piece at the upper end of cylinder a. and from thence in a single tube m
which runs up alongside of and follows the shape of chimney; and ends in a
perforated tubular beading m' round the top of j. Thus no heat is wasted.
When the water is forced through the perforations of the beading m¹ it
trickles downwards on to the top of cylinder a, from whence it escapes by means
of small holes formed in the vertical projecting sides of the cylinder a down
between the walls of same, and then drawn off by means of the outlet pipe n.
It will be seen that the arrangement described ensures great economy of heat,
for not only is the water heated as it ascends the spiral coil, but also in
descending outside the flue pipe, by chamber j¹ inside the outer copper dome, and
also receives further, warmth from the inner wall of the annular water space.
The gas burner is furnished with a small jet of pure gas regulated by a
separate tap (not shown).
This jet serves as a pilot light which when lit ignites the atmospheric burner.
The gas supply tap is fixed beneath the water supply tap and both are connected
so that by turning a lever handle the two taps are turned on and off simultaneously,
the gas supply being proportioned to the amount of water to be heated.
Thus it is impossible to leave the gas burner on when the water is turned off.
Ventilating air holes are provided for the burner, and the heater is placed
on suitable legs or a stand, and a portable pan is placed beneath to receive
condensation water.
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. In a rapid water heater for gas, the combination of a double or water-
jacketted cylinder with flue, atmospheric burner with pilot light, treble spiral or
pyramidal coil of tubes, dome on cylinder, swell on flue pipe of inner cylinder,
combined gas and water tap with check valve, shield for burner and condensation
pan, as herein described and set forth.
2. In a rapid water heater for gas and for like purposes the double action gas
and water tap with or without check valve and pilot light, as herein described
and set forth.
Dated this 10th day of April 1895.
S. S. BROMHEAD,
97, Newgate Street, London, E.C., Agent for Applicant.