Improvements in Steam Generators.
Year: 1899

page_text: Date of Application, 17th Apr., 1899
Complete Specification Left, 19th Feb., 1900-Accepted, 24th Mar., 1900
PROVISIONAL SPECIFICATION.
Improvements in Steam Generators.
LIONEL BERESFORD BETHELL, Kingswood Warren, Epsom, Gentleman, do
hereby declare the nature of this invention to be as follows:-
My invention consists of a steam generator or evaporiser. The water to be
evaporated is forced under pressure against the heating surface in the form of
a fine spray.
The heating surface is a tube or a series of tubes, preferably of
steel, which are arranged side by side connected either in series or parallel, and
fixed at a slight angle, and they communicate at the highest point with a steam
reservoir or superheater; at their lowest point they are fitted with a stop cock.
The oil, gas, or other furnace will be immediately below these tubes. The
water to be evaporated will be pumped into tubes of smaller diameter prefer-
ably of copper or iron which will be fixed inside the 'steel generating tubes.
These water tubes will be perforated so that they will discharge the water to be
evaporated in the form of a very fine spray against the inner surface of the
generating tubes.
The water tubes will be connected up in two or more groups and each group
can be supplied with water alternately; this will give the generating tubes in
each section time to heat up before receiving the spray.
The water before it reaches the perforated tubes will pass through a coil
which will receive heat from the furnace so that the temperature of the spray
will be high. The generating tubes will be fixed in such a manner that they
can be easily renewed.
Dated this 17th day of Anvil 1800
Improvements in Steam Generators.
I, LIONEL BERESFORD BETHELL, Kingswood Warren, Epsom, Surrey, Gentle-
man, 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 relates to steam generators. According to this invention the
water to be evaporated is forced under pressure against the heating surface
in the form of a fine spray. The heating surface is a tube or a series of tubes,
preferably of steel, which are arranged side by side and, are connected either in
series or in parallel, and fixed at a slight angle. They communicate at their
highest point with a steam reservoir or superheater and at their lowest point
Price S17

page_text: time to become heated up before receiving the water spray. This alternate
supply can be done by any suitable means.
In the case of two groups, this can be done by connecting the water supply
pipes to the opposite ends of a double acting feed water pump. In the case of
three or more groups, a single or double-acting pump may be employed the
delivery of which is controlled by means of a suitable cock or valve.
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
I claim is
1. In a steam generator, the employment of two tubes, the outer one being
heated by a furnace or other source of heat, and the inner one being perforated
so that water supplied to it under pressure issues into the outer tube in the
form of fine spray, as and for the purpose specified.
2. In a steam generator of the kind specified in the preceding claim, arrang-
ing the steam generating tubes with their contained water tubes in two or more
groups, and supplying the feed water alternately to each group of water tubes,
substantially as and for the purpose specified.
3. The improved steam generator substantially as described and as shown in
the accompanying drawings.
Dated this 19th day of February 1900.
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London,
Chartered Patent Agents.