Improved Feed Water Pipe Arrangement for Steam Boilers.
Year: 1898

page_text: Date of Application, 7th Mar., 1898-Accepted, 7th May, 1898
COMPLETE SPECIFICATION.
Improved Feed Water Pipe Arrangement for Steam Boilers.
I, CARL REICH, of Dieterichstrasse 16A, Hanover, Germany, Civil Engineer, do
hereby declare the nature of my invention and in what manner the same is to be
be performed to be particularly described and ascertained in and by the following
statement:-
The present invention relates to feed water pipes for steam boilers and consists
in mounting the same within the boiler in such manner that in the event of a
break down of any part of the feed apparatuses or pipes whilst the boiler is in opera-
tion, no water can escape from the boiler after the lowest water level of the boiler
has been reached.
This object is attained by arranging the end of the feed pipe within the boiler at
the level of the lowest water level, and fitting a piece of pipe of larger diameter and
having both ends open, to the end of the feed pipe proper, the said larger pipe reach-
ing from the highest waterlevel or a short distance above the same to approximately
the bottom of the boiler.
And in order to render the present specification more easily intelligible reference
is had to the accompanying drawings in which similar letters of reference denote
similar parts throughout the several views:
Fig. 1 is a cross section through a steam boiler and the feed pipe therein, for
plant in which the feed pipe enters the boiler at the top.
Fig. 2 is a part longitudinal section showing a boiler with feed pipe entering
it at about the middle of the boiler end and
Fig. 3 shows a similar section of a boiler having the feed water pipe entering
at the bottom.
The lowest water level is indicated by N W and as will be seen from the draw-
ings, the feed water pipe proper ends downwardly just at or slightly above this
level as at a. Affixed to the end of the feed water pipe proper is a pipe of larger
diameter 6 which extends from the highest water level or slightly above the same
down towards the bottom of the boiler and has both ends open.
The device operates in the following manner;--
If a break down occurs in the feed pipe system or in connection with the feed
apparatuses, no water can be forced out of the boiler after the lowest level has been
reached since the feed pipe proper ends at this level and when it has been reached.
steam will issue from the boiler.
If on the other hand the feed apparatuses and pipes are in proper working
order, the feed water entering the boiler, will sink in the pipe b, owing to the fact
that the upward extension of the latter allows a greater water column, and also
to the lower temperature of the feed water introduced.
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:-
The arrangement of a feed water pipe within a steam boiler, according to which
the feed water pipe proper ends at or about at the lowest water level, the said end

page_text: being enclosed in a pipe of larger diameter having both ends open and extending
from about the highest water level to approximately the lowest point within the
boiler substantially as described...
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.