IMPROVEMENTS IN FEED WATER HEATERS AND PURIFIERS FOR STEAM BOILERS AND OTHER PURPOSES as follows
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
We JOSEPH SAMUEL TAYLOR of the firm of Taylor and Challen of Nos 60
and 62 Constitution Hill Birmingham in the County of Warwick Machinists and
JOHN WITHINSHAW of Francis Road Birmingham aforosaid Mechanical Engineer
do hereby declaro the nature of the said invention for "IMPROVEMENTS IN FEED
WATER HEATERS AND PURIFIERS FOR STEAM BOILERS AND OTHER PURPOSES to
be as follows :—–
"
Our invention has for its object to purify as far as practicable the heated water
supplied to steam boilers and used for other purposes from such mineral matters as
are held dissolved in it by carbonic acid gas; and our said invention consists of the
improvements hereinafter described in closed feed water heaters and purifiers by
which improvements the whole of the carbonic acid gas liberated by the heating of
the feed water is discharged into the atmosphere and the precipitation of the matter
held in solution by the carbonic acid gas thereby more thoroughly effected.
We form in the top of the heater and purifier a valve seat and we fit to the said
valve seat a valve opening inwards. To this valve we attach a float inside the
heater and purifier. The buoyancy of the said float is so arranged that whenever
the level of the water in the heater and purifier is at or above a certain level the
valve is closed but when the level of the water in the heater and purifier falls below
the said level the valve opens automatically and the gaseous matter accumulated in
the upper part of the heater and purifier escapes into the air. When-ever the
scum-cock or blow-off cock of the heater and purifier is opened the water in the
heater and purifier falls and the valve opens automatically. Should tho scum-cock
or blow-off cock not be opened until there is a considerable accumulation of carbonic
acid gas in the heater and purifier the accumulation of the said gas at the top of
the heater and purifier causes the water to sink and the valve to open. The said
valve may be operated by a float external to the heater and purifier or in place of
or in addition to a float the valve inay be provided with levers or other gearing by
which it may be operated by hand. When the float is operated by hand the valve
may be opened and carbonic acid gas permitted to escape while the heater and
purifier is under the normal pressure and the valve may open either inwards or
outwards.
Dated this twenty fifth day of June 1
W, T. WHITENAN,
Agent for the Applicants.

page_text: We JOSEPH SAMUEL TAYLOR of the firm of Taylor and Challen of Nos 60
and 62 Constitution Hill, Birmingham in the County of Warwick, Machinists and
JOHN WITHINSHAW of Francis Road Birmingham, aforesaid, Mechanical Engineer
do hereby declare the nature of our Invention for "IMPROVEMENTS IN FEED
WATER HEATERS AND PURIFIERS FOR STEAM BOILERS AND OTHER PURPOSES" and 5
in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :—
Our invention has for its object to purify as far as practicable the heated water
supplied to steam boilers and used for other purposes from such mineral matters as
aro held dissolved in it by carbonic acid; and our said invention consists of the 1
improvements herein after described in closed feed water heaters and purifiers by
which improvements the whole of the carbonic acid gas liberated by the heating of
the feed water is discharged into the atmosphere and the precipitation of the matter
held in solution by the carbonic acid thereby more thoroughly effected.
We form in the top of the heater and purifier a valve seat and we fit to the said 1
valve seat a valve opening inwards. To this valve we attach a float inside the
heater and purifier. The buoyancy of the said float is so arranged that whenever
the level of the water in the heater and purifier is at or above a certain level the
valve is closed but when the level of the water in the heater and purifier falls below
the said level the valve opens automatically and the gaseous matter accumulated in 2
the upper part of the heater and purifier escapes into the air.
Whenever the scum-cock or blow off cock of the heater and purifier is opened the
water in the heater and purifier falls and the valve opens automatically. Should
the scum-cock or blow off cock not be opened until there is a considerable
accumulation of carbonic acid in the heater and purifier the accumulation of the 2
said gases at the top of the heater and purifier causes the water to sink and the
valve to open, when the feed supply is stopped. The said valve may be operated
by a float external to the heater and purifier; or in place of or in addition to a
float the valve may be provided with levers or other gearing by which it may be
operated by hand. When the float is operated by hand the valve may be opened 3
and carbonic acid gas permitted to escape while the heater and purifier is under the
normal pressure and the valve may be arranged to open either inwards or
outwards.
Figure 1 of the accompanying Drawing represents in elevation; Figuro 2 in
plan and Figure 3 in vertical section a vessel and apparatus situated external to a
feed water heater and purifier, the vessel and apparatus being made according to
our invention; Figure 4 represents a portion of the same in vertical section, the
parts being shown separated.
The other Figures represent detached parts as herein after explained.
The apparatus represented in the Drawing is fixed on the top of and external to 4
an ordinary water heater and purifier by means of screw bolts passed through the
flange a of the hollow cylinder b, or it may be screwed directly into the heater.
The interior of the hollow cylinder b opens into the heater and purifier and is
virtually part of the same, the level of the water in the said external cylinder b
rising and falling with the level of the water in the heater and purifier.
c is the conical valve seat; c is a stem or stalk, which may or may not be attached
to the valve and is connected with the lever f. The said leverf has a weight g at
one end and may have at its other end a connecting rod, chain or cord h; k is a
float situated in the hollow cylinder b on the top of which float the valve dis

page_text: situated; is a guide pin at the bottom of the float k which guide pin works in a
hole in the cross bar m at the bottom of the hollow cylinder b. The size of the
float is so arranged with respect to the lever fand its weight that when the water
in the heater is at about a certain level say the level indicated by the line n (Figure 3)
the valve d is raised to its seat c and that when the water sinks below the level
at n the valve d descends and a passage is opened between the upper part of the
cylinder and the exit pipe p by which pipe any gaseous matter accuinulated in
the upper part of the cylinder b escapes into the atmosphere. The descent of the
float and the opening of the valve d also takes place when the level n of the
water is depressed by the opening of the scum cock or blow off cock. Whenever
there is a considerable accumulation of carbonic acid gas in the upper part of the
cylinder b, the valve d opens automatically, that is, the said accumulation of gas in
the upper part of the cylinder depresses the float k and opens the valve.
The separate external hollow cylinder b in communication with the water in the
heater as represented in the Drawing, may be dispensed with and in place thereof
the float and valve may be situated in the beater itself, the valve seating itself on
a valve seat at the top of the heater. The internal float is furnished with the
external lover arrangement described and represented in connection with the
external float.
The rising and falling of the water in the water heater and purifier is thereby
inade to cause the rising and closing of the valve d and the falling and opening of
the said valve; or the valve may be partly balanced by means of a weight only
attached to the external lover.
Or the valve & may be worked by hand by attaching a handle q to the connecting
rod h.
When it is wished to operate on the valve d by hand only, the float k is dispensed
with and the lever f so weighted as to raise and close the valve d, the said valve
being depressed and opened by operating on the lever f through the rod h and
handle g.
Figure 5 represents the body of the float separately and Figure 6 represents its
separate ends; Figure 7 represents the lever f separately and Figure 8 the handle q
and connecting rod on the lever f.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
First The addition to or combination with closed feed water heaters and
purifiers and other water heaters and purifiers, of a valve which valve on the
depression of the level of the water by the opening of the scum-cock or blow off
cock or by the accumulation of carbonic acid in the upper part of the apparatus
opens and permits the escape of the carbonic acid into the atmosphere substantially
as herein before described and illustrated in the accompanying Drawing, whether
the float and valve be situated in the heater and purifier itself or in a vessel
external to but in communication with the water heater and purifier.
Secondly-The arrangement described for operating the valve by hand, that is,
effecting the closing of the valve by means of a weighted lever and the opening of
the valve by depressing the long arin of the said lever.
Dated this Tematy with defa 1001
JOSEPH SAMUEL TAYLOR.
JOHN WITHINSHAW.