Year: 1888

page_text: A communication from HIRAM RUSHTON, of the City of Toronto, in the County
of York, in the Province of Ontario, Canada, Boiler Maker.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E. 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 :-
The object of the invention is to design a device by which mud or any solid matter
will be prevented from collecting around the tubes and bottoin of the boiler; and it
consists in forming a long narrow chamber on the inside of the boiler immediately
over the hole through which the feed water enters, the said chamber being sufficiently
narrow to fit between the boiler plate and tubes, and it is shaped to extend from the
lower portion of the boiler below the tubes to a point slightly above high water mark;
a trough shaped top being formed on the chamber with a series of slanting partitions
arranged to cross the trough so as to leave only small openings between the trough
and the interior of the water chamber, substantially as and for the purpose herein-
after more particularly explained.
Figure 1 is a section of a boiler provided with this device.
Figure 2 is a side elevation of one of the chambers.
Figure 3 is a plan of one of the chambers.
In the drawings A represents long narrow chambers shaped so as to fit into the
boiler within the space left between the tubes or the space left between the tubes and
shell of the boiler. Each chamber A communicates with a pipe B extending along
its entire length a slot being made in the pipe B so as to leave a clear passage-way
between its interior and that of the chamber A. One end of the pipe B is carried
through the shell of the boiler and has a blow-off cock C fitted onto it.
D is a feed pipe provided with the ordinary check-valve and entering the chamber A
at a point below the water.
b is a deflecting-plate placed over the feed pipe entrance when entering the chamber
located between the sholl and tubes so that the water entering through the said feed

page_text: pipe will be directed down towards the bottom of the chamber A. At the top of each
chamber A a trough E is formed having a series of deflecting plates F arranged to
cross it as indicated, so as to partition said trough, and leave only a series of small
openings between the interior of the trough and that of the chamber A. These
deflecting-plates or partitions F are designed to keep the main body of water within
the chamber A and prevent the scum which will naturally rise to the surface of the
water within the trough E from overflowing into the boiler.
The operation of the improved device is as follows:-The feed water entering at a
is thrown towards the bottom of the chamber A where the mud or any foreign matter
entering with the water will naturally settle. When the level of the water reaches
the holes e made in the end plate of the chamber A it will flow into the boiler and as
the deflecting-plate F¹ separates the end portion of the trough E from the main body
of the water within the said trough and as the water which passes through the holes e
must come from the chamber A through the small opening g (see fig. 2) the scum
which may form on the surface of the water within the trough will not pass through
the holes e but will finally settle to the bottom of the chamber A and escape through
the pipe B when the blow-off cock C is open.
While this device has been specially designed for locomotive boilers, it is equally
applicable to stationary boilers, or to any other class of steam boilers.
As locomotive boilers are fed from both sides two chambers A are provided both
being arranged in the manner herein described.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed, as communicated to me by my foreign
correspondent, I declare that what I claim is :-
1. A chamber A fitted onto the inner side of the shell of the boiler and arranged
so that its interior. shall communicate with the feed pipe D in combination with tho
pipe B provided with a blow-off cock C arranged substantially as and for the purpose
specified.
2. A chamber A fitted onto the inner side of the shell of the boiler and communi-
cating with the interior of the pipe B which is provided with a blow-off cock C as
specified in combination with a feed pipe D communicating at a with the interior of
the chamber A and having a deflecting-plate 6 located substantially as and for the
purposo specified.
Dad the of T1000