Improvements in Water Tube Steam Boilers
Year: 1895

page_text: Date of Application, 10th May, 1895-Accepted, 22nd June, 1895
COMPLETE SPECIFICATION.
Improvements in Water Tube Steam Boilers
I, WILLIAM TIJOU, of 48 Dalmeny Road, Tufnell Park, London, N., Engineer,
do hereby declare the nature of this inventio and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to improvements in water tube steam boilers, and has for
its object to provide large heating surface in compact form to secure ample
circulation of the water through the tubes and consequently to prevent the deposit
of scale therein, and to facilitate the passage of steam through the water contained
10 the tubes. This I effect by the construction and arrangement of water tube
steam boiler having conical or tapered water tubes disposed large end uppermost,
as hereinafter described. Further, according to my invention, I connect the water
tubes with the upper water and steam chambers and lower water chambers by
rivetting, as hereafter described, whereby the connections are rendered as strong
and as little able to leakage as any ordinary rivetted seam in a steam boiler.
In the accompanying drawings in which similar letters refer to corresponding
parts in all the figures.-
Fig is a transverse section shewing one form of steam boiler according to my
invention, and Fig 2 18 a longitudinal section thereof.
Figs. 3, 34, and 4, are transverse sections of slightly modified for mns.
Referring to Figs. 1 and 2, the upper water and stearn chambers A A are
connected with the lower water chambeis B B by the water tubes CC. I make
these tubes of conical or tapered form and dispose thein large end uppermost
The
said tubes are formed with flanges c at each end which are secured by the rivets cl
to the upper water and steam chambers A and lower water chambers B. The
tubes Care arranged to cross one another and connect the water and steam
chamber A on one side with the water chamber B on the other side, whilst the
tubes C¹C lend from the water and steam chainber AA to the water chambers BB
immediately beneath. Ample circulation of water and steam through the entire
boiler is thus secured. D indicates the fire from which the flame and products of
combustion pass within the seating or casing E around the water tubes, water and
steam chambers, and water chambers, up to a suitable flue or chimney F
In Figs. 3 and 34, the lower water chambers B B are represented as directly
connected together by water tubes C, the latter being shown as cylindrical in
Fig. 3, aud conical or tapering in Fig. 34.
In Fig. 4, which shews a maine boiler, constructed according to my invention,
only one upper water and steam chamber A is represented, connected by the
conical or tapering water tubes C with the lower water chambers B B, which
latter are duectly connected together by the water tubes C².
In every arrangement the water tubes must all be enclosed within the boiler
casing or seating E
Having now particularly described and ascertained the nature of the said inven-
tion and in what maunor the same 18 to be performed I declare that what I
claim is :-
1. A water tube steam boiler having upper water and steam chambers and
lower water chambers connected by conical or tapered water tubes disposed large
end uppermost, some of the said water tubes crossing one another and connecting
מ

page_text: the upper water and steam chamber on one side with the lower water chamber on
the other side, and others of the said tubes connecting each upper water and steam
chamber with the water chamber immediately beneath, the whole of the said tubes
being enclosed within the boiler casing or seating, substantially as described with
reference to and illustrated in Figs. 1 and 2 of the drawings.
2 A water tube steam boiler having an upper water and steam chamber or
chambers connected with lower water chambers by conical or tapered water tubes
disposed large end uppermost, said lower water chambers being directly connected
together by water tubes C', the whole of the said tubes being enclosed within the
boiler casing or seating, substantially as described with reference to and illustrated
in Figs. 3, 34, and 4 of the drawings
3. In a water tube steam boiler, the employment of comical or tapered water
tubes disposed large end uppermost and connected with the upper water and stenm
chambers and lower water chambers by vetting, substantially as described with
ieforence to and illustrated in the drawings.
4. A water tube steam boiler constructed and arranged substantially as illustrated
in the annexed drawings.
Dell you! I SV. 1905
E. P. ALEXANDER & SON,
Chartered Patent Agents,
19 Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.