Year: 1886

page_text: ANDREW SWEET 102 Hampstead Road London N.W. Iron-Monger do hereby
declare the nature of my said invention to be as follows:-
The boiler or heater I make of a number of double or water containing cylinders
of different diameters a number of these jacketed cylinders being built up con-
centrically, leaving such flue space between them that the heated air and products
of combustion escaping at the top are comparatively cool in virtue of the extended
surface presented, where quickness of heat is most important as in a boiler of the
"instantaneous" kind, I place at the top or outlet end tubes bent cylindrically
and perforated so that the water supply comes into the boiler in a downpour or
shower.
My improvement connected with the gas supply or heat generator is the
arrangement of an automatic appliance in the form of a supplementary valve
operated upon by expansion or pressure whereby the gas or other heat generator,
cannot be kept burning unless and only when under the influence of such
expansion or pressure.
My improvement in relation to measuring the quantity of water or height of
column is by causing such pressure to act upon a column of mercury and in the
case of an "Instantaneous" water heater indicating the measured quantity flowing
under varying pressures.
My improvement in relation to measuring the temperature in "Instantaneous"
water heaters is to affix a thermometer on the outter case with its lower end
inserted into the outlet,

page_text: Improvements in Water Heating Apparatus.
ANDREW SWEET 102 Hampstead Road, London N.W. Iron-Monger, 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:-
The boiler or heater I make of a number of double or water containing cylinders
of different diameters, a number of these jacketed cylinders being built up con-
centrically, leaving such flue space between them, that the heated air and products
of combustion escaping at the top are comparatively cool in virtue of the extended
surface presented Wherever quickness of heat is most important as in boilers of
the instantaneous kind I leave the top of these jacketed cylinders open, into these
I fit hollow rings perforated with a number of holes and connected together so
that one inlet supplies the whole of them with water.
My improvement connected with the gas supply or heat generator is an automatic
contrivance in the form of a supplementary valve operated upon by the pressure of
the water to turn it on or open it as the water service enters whereby the gas or
other heat generator cannot be kept burning unless and only when under the
influence of such pressure.
My improvement in relation to measuring or denoting the quantity of water
passing through the beater per minuite is by attaching a glass tube to the outter
case and experimentally determining the quantity at varying heights.
In relation to measuring the temperature of the water I make a tubular inlet
into the spout and insert a thermometer by sliding it down a fitted case into the
aforesaid tubular inlet.
The whole arrangement of contrivances will be better understood by reference to
the drawings herewith.
Fig. 1. A. A shows the sectional elevation of the outter jacket of the boiler, B is
the boiling plate C. C. C are the hollow rings connected to the one iplet J and
shown in plan in Fig. 4. D is a tubular inlet from the jacketed outside cylinder
and the 2 other cylinders C. C. E is the outlet F the tubular inlet in the outlet
or spout to receive the thermometer G is the base.
Fig. 2 shows the automatic contrivance in section 1 is the outter jacket of
boiler 2¹ is the inlet for water 2 the supply pipe to J. 3 a hole to empty pipe 2.
when the water is turned off 4 a diaphragm piece of rubber 5 a spindle and
spring with seating attached 6 the gas inlet to the burner 8 the supplementary
valve seat which stops the gas passing through to the burner, until diaphragm 4 is
depressed which can only be done by turning on the water. The gas is shut off or
lowered by an ordinary tap at outlet 9 the drawing shows the automatic at rest, it
will readily be seen that when water is turned on at 2¹ it will rise in the tube 2 to
supply J this column of water being of sufficient height to depress the diaphragm 4
and so open the supplementary valve 8. but should the water fail from any reason
the tube 2 will empty through the hole 3 when the valve will immediately close.

page_text: Fig. 3 shows the glass tube connected with the outter case and the figs. 1. 2. 3. 4
are the indications to shew when the water line is up to those points that so many
gallons of water are flowing through the heater per minuite.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
my claim is
1st. The cylindrical Boiler as described.
2. The automatic arrangement actuated by pressure.
3. The quantity indicator by the height of the column of water.
4. The tubular spout for insertion of Thermometer.