Improvements in Steam Generators.
Year: 1892

page_text: Date of Application, 16th Sept., 1892
Complete Specification Left, 16th June, 1893-Accepted, 2nd Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Steam Generators.
I GABRIEL TAHIKIAN of 57 Britannia Road, Fulham, London, S.W. Engineer
do hereby declare the nature of this invention to be as follows:-
"
This invention principally relates to the class of steam generators usually known
as "sectional boilers in which the water is evaporated in tubes. In these boilers
the tubes being at their upper part filled and in contact with steam have a reduced
efficiency and are liable to strain and overheating. To remedy this in a simple and
effective way is the purpose of my invention which will be properly understood by
reference to the accompanying drawings, Figure 1 representing a side sectional
elevation of a steam generator of above description :
Figures 2 and 3, enlarged partial view of tube showing invention applied.
According to my invention I insert into the water inlet end 1 of each tube T a
metallic guide G having two or more preferably three, screw blades or wings B to
cause the mixture of water and steam to traverse the tube in helical convolutions;
as by the centrifugal power the water particles are driven against the heating
surface of the tube and the steam flows centrally, the tubes exercise their whole
steam creating power and are protected against strain or overheating.
The guides G are fixed to the boiler tube preferably by spring clips C (Figs. 2
& 3) provided at the extremities of the wings and grasping the rim R of the tube.
Dated this 16th day of September 1892.
FREDERIC PRINCE,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Steam Generators.
GABRIEL TAHIKIAN now of 304 Vauxball Bridge Road London S.W.
Engineer 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 principally relates to the class of water tube steam generators
usually known as "sectional boilers," being also applicable to any other steam
generators in which the water is evaporated in tubes.
In sectional boilers the water tubes when in work have their upper portion filled
with the traversing steam, which reduces their efficiency and renders them liable
to overheating and strain.
To remedy this in a simple and effectual way is the purpose of my invention.
This consists in a device composed of several gradually curved guide blades or wings
and fixed in the water inlet end of each steam generating tube to impart to the
rushing water the impetus to traverse the tube in helical convolutions. As by the
centrifugal power the water is driven against the whole heating surface of the tube
and the steam is caused to pass centrally, the tubes exercise their whole evaporating
power and are protected against overheating and strain. Referring to the accom-
panying drawings, in which :-
:―
Figure 1, is a sectional side view of an ordinary horizontal sectional boiler,
Figures 2 and 3, enlarged longitudinal and end view respectively of a water tube
fitted with the device,
Figure 4 detached perspective view of the device on a larger scale :-
I insert in the water inlet end of each steam generating tube T the device G

page_text: being a metallic guide-apparatus consisting of several-preferably three-gradually
curved guide blades or wings B, by which the rushing water receives a helical
impetus and is caused to pass through the tube in helical convolutions. The device
is held in the tube preferably by the spring clips C firmly grasping the end of
the tube.
In applying my device to sectional boilers with double or field tubes (Fig. 5) I
preferably form the same, as shown in Fig. 8, by mounting the blades B, upon a
collar D, and insert it likewise in the water inlet of the steam generating tube T
(Figs. 6 and 7.) by firmly slipping the collar over the end of the central water
supply tube T
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
In water tube steam generators a device consisting of several curved guide blades
or wings and firmly held in the water inlet end of each steam generating tube to
cause the circulating water and steam to traverse the tube in helical convolutions,
substantially as and for the purposes set forth.
Dated this 16th dox of June 1803
FREDERIC PRINCE,
1, Quality Court, Chancery Lane, London, Agent for Applicant.