Improvements in Feed-water Heaters.
Year: 1889

page_text: Date of Application, 15th June, 1889
Complete Specification Left, 14th Mar., 1890-Accepted 26th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in Feed-water Heaters.
I, ALEXANDER CHARLES MOFFATT, of 141 Queen Victoria Street, in the City of
London, Engineer, do hereby declare the nature of this invention to be as
follows:-
:-
.
This invention relates to feed water heaters such as are described in the specifi-
cation of a former patent granted to me No. 4202 in the year 1875.
This heater consists of a cylinder or barrel with inlet and outlet passages for the
water. The cylinder has end covers bolted on and in the covers are chambers for
steam. The steam chambers are connected together by tubes passing through the
cylinder or barrel. The joints are made with india rubber rings confined by flanges
on the tubes in sockets or recesses upon the inner walls of the steam chambers into
which the tubes are set.
Now there has been difficulty heretofore in making these joints tight because the
india rubber rings are liable to be twisted and displaced in the operations of putting
the parts together.
By my present Invention 1 overcome this difficulty, in place of forming the surfaces
between which the rings are compressed as planes at right angles to the axis of the
tubes. I make these surfaces conical and I make the india rubber rings of a corre-
sponding conical form.
Then in putting the parts together when the tubes are dropped down into the sockets
or recesses prepared to receive them, the end of the tube comes on to the inclined or
conical surface in the socket. Thus the tubes are accurately guided to the opening
through which the end is to pass and even if this opening be only slightly bigger than
the end of the tube the tube enters it freely and the india rubber ring upon the end of
the tube enters without touching the socket until it gets home to its place. Or even
if the ring should touch upon the edge of the socket in entering the form of the ring
is such that it is not liable to be displaced.
In the same way when the upper chamber of the heater is dropped into its place
over the upper ends of the tubes the inclined bottoms of the sockets lead the tnbes
to their places and the india rubber rings are not likely to touch upon the sides
of the sockets. in. entering and even if they do so they are not liable to be
displaced.
COMPLETE SPECIFICATION.
Improvements in Feed-water Heaters.
I, ALEXANDER CHARLES MOFFATT, of 141 Queen Victoria Street, in the City of
London, 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 relates to feed water heaters such as are described in the Specifi-
cation of a former patent granted to me No. 4202 in the year 1875.
This heater consists of a cylinder or barrel with inlet and outlet passages for the
water. The cylinder has end covers bolted on and in the covers are chambers for
steam. The steam chambers are connected together by tubes passing through the
cylinder or barrel. The joints are made with india rubber rings confined by Alanges
on the tubes in sockets or recesses upon the inner walls of the steam chambers into
which the tubes are set.

page_text: Now there has been difficulty heretofore in making these joints tight because the
india rubber rings are liable to be twisted and displaced in the operations of putting
the parts together.
By my present invention I overcome this difficulty, in place of forming the surfaces
between which the rings are compressed as planes at right angles to the axis of the
tubes, I make these surfaces conical and 1 make the india rubber rings of a corre-
sponding conical form.
Then in putting the parts together when the tubes are dropped down into the
sockets or recesses prepared to receive them, the end of the tube comes on to the
inclined or conical surface in the socket. Thus the tubes are accurately guided to
the opening through which the end is to pass and even if this opening be only slightly
bigger than the end of the tube the tube enters it freely and the india rubber ring
upon the end of the tube enters without touching the socket until it gets home to its
place. Or even if the ring should touch upon the edge of the socket in entering the
form of the ring is such that it is not liable to be displaced.
In the same way when the upper chamber of the heater is dropped into its place
over the upper ends of the tubes the inclined bottoms of the sockets lead the tubes
to their places and the india rubber rings are not likely to touch upon the sides
of the sockets in entering and even if they do so they are not liable to be
displaced.
In order that my said invention may be more fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a section of one of the tube plates having a tube and a ring in position
upon it.
Figures 2 are a section and plan of one of the rings.
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 :-
проп 10.
Figures 2 are a section and plan of one of the rings.
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. My improvements in feed water heaters which consist in making the sockets or
recesses of a conical form substantially as described.
2. Feed water heaters substantially as described and shown in the drawings.
Dated this 10th
L 1000