Improvements in Steam-jet Apparatus for Raising or Forcing Liquids.
Year: 1888

page_text: Date of Application, 28th Dec., 1888
Complete Specification Left, 30th Sept., 1889-Accepted, 2nd Nov.,
1889
Improvements in Steam-jet Apparatus for Raising or Forcing
Liquids.
I CHARLES HENRY ROSHER of No. 5 Westminster Chambers, Victoria Street, in
the City of Westminster, Civil Engineer do hereby declaro the nature of this inven-
tion to be as follows:-
My invention relates especially to the class of apparatus commonly called steam-
jet water lifters, raisers, or ejectors but it may also be applied to injectors or ejector
condensors.
The efficient working of the before-mentioned apparatuses depends to a great extent
upon the rapid condensation of the steam used to work them, and it is a well known
fact that such an apparatus when it becomes heated beyond a certain temperature
will cease working, and it is known also that liquids cannot be raised or forced if
their temperature exceeds about 160 degrees Fahrenheit.
The object of my invention is to construct apparatuses of this class in such a manner
that they will be able to force liquids at a much higher temperature than hitherto,
and to raise and force cold liquids with increased efficiency.
In order to carry out my invention I surround that part of the apparatus known
as the receiving cone "with an outer chamber or jacket, through which I cause
cold water to pass continually while the apparatus is working. The receiving
"is made as thin as possible and having its outer surface completely enveloped
with cold water, the steam which is used to work the apparatus is more rapidly con-
densed owing to the cold surface of the cone with which it comes in contact.
cone
In an apparatus for forcing hot liquids the vessel or jacket surrounding the
"receiving cone" would be coated on the outside with asbestos or some other non-
conductor of heat. When the apparatus is immersed in the liquid to be raised, the
cold water being supplied by an inlet pipe and passing out by an overflow pipe, but
it may be fixed outside the vessel containing the hot liquid at about the level of the
bottom of the liquid, in which case the jacket would not require to be covered with
any nonconductor of heat.
In apparatuses suitable for raising and forcing cold liquids the suction pipe of the
apparatus would be so connected with the jacket or vessel surrounding the "receiving
cone that the cold liquid to be raised will be compelled, in its passage, to
envelope the cone, and will itself serve to keep the working parts of the instrument
cool.
"
T
2
1000
COMPLETE SPECIFICATION.
Improvements in Steam-jet Apparatus for Raising or Forcing
Liquids.
I, CHARLES HENRY ROSHER, of 5, Westminster Chambers, Victoria Street, in
the City of Westminster, Civil Engineer, do hereby declare the nature of this inven-
tion 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 especially to the class of apparatus commonly called steam-
jet water lifters raisers, or ejectors, but it may also be applied to injectors or ejector
condensers. The efficient working of the before-mentioned apparatus depends to a

page_text: great extent upon the rapid condensation of the steam-jet upon which the action
depends, and it is a well known fact that such apparatus when it becomes heated
beyond a certain temperature; say 160° Fahrenheit, will cease working satisfactorily.
The object of my invention is to construct apparatus of this class in such a manner
that it will be able to force liquids at a much higher temperature than hitherto, and
to raise and force cold liquids with increased efficiency.
In order to carry out my invention, I surround that part of the apparatus known
as the "receiving cone "with an outer chamber or jacket through which I cause cold
water to pass continually while the apparatus is working. The "receiving cone
" is
made as thin as possible and having its outer surface completely enveloped with cold
water, the steam which is used in the apparatus is rapidly condensed by contact with
the cold surface of the cone. In an apparatus for forcing hot liquids, the water-
jacket or vessel surrounding the receiving-cone would be covered on the outside with
asbestos or some other non-conductor of heat when the apparatus is immersed in the
hot liquid to be raised, the cold water being supplied by an inlet pipe and passing
out by an overflow pipe but it may be fixed outside the vessel containing the bot
liquid at about the level of the bottom of the liquid in which case such non-conducting
covering would not be required.
In apparatus when used for raising and forcing cold liquids, the suction pipe of the
apparatus would be so connected with the jacket or vessel surrounding the "receiving
cone," that the cold liquid to be raised will be compelled in its passage to envelope
the cone and will itself serve to keep the instrument cool.
Reference is to be had to the accompanying drawings forming part of this Specifica-
tion, wherein figure 1 is a central vertical section of a steam jot apparatus suited for
raising hot liquids. Figure 2 is a diagrammatic view of the said apparatus in
relation to the tank from which the hot liquid to be raised is drawn. Figure 3 is a
central vertical section; figure 4 a cross section; and figure 5 an external view of
a similar apparatus for raising cold liquids. The same letters of reference indicate
like parts in all the figures.
a is the steam nozzle a¹ steam inlet, b the water space surrounding the nozzle,
e the suction pipe conveying thereto the liquid to be raised, d is the receiving cone on
which the steam and water mix and the energy of motion of the former is transferred
to the latter.
In figure 1, e is a water-tight chamber surrounding the whole length of the
receiving cone and provided with inlet and outlet pipes fg for a circulation of cold
water, the pipe f being in communication with a cold water cistern, the supply being
regulated by a cock and the water overflowing at J.
In figure 2, the above described apparatus is shewn at the right hand side of the
figure as placed on about a level with the bottom of the tank from which the hot
liquid to be raised is drawn, as in the case of hot liquids it. is not possible to raise
the hot liquid to the steam jet apparatus by atmospheric pressure by reason of the
temperature of the boiling point of the liquid within the space band suction pipe c
being lowered under the diminished pressure caused by the action of the steam jet
apparatus, the consequent generation of steam in b and c rendering intermittent or
stopping altogether the action of the steam-jet water raising apparatus.
In the apparatus shewn in figures 3, 4, 5, the water supply itself is used for
cooling the receiving cone d which is surrounded by an annular passage e that serves
the purpose of a water-jacket and is in communication at its upper end with the
suction pipe c and at its lower end with the mouth of the receiving cone, so that the
incoming cold liquid is caused to descend in contact with the outer surface of
the receiving cone for its whole length and thereby to prevent the latter becoming
unduly heated by the steam jet. By this means the steam is more quickly condensed
and the action of the raiser accelerated.
The drawings represent the invention applied to an ordinary steam-jet water raiser
but the application to an injector for feeding steam boilers or to an ejector con-
denser will be readily understood without further description.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is;
1. In a steam-jet apparatus for raising or forcing liquids, the combination with the
receiving cone of a water jacket or chamber enclosing the same and traversed by a
current of cold water, as and for the purpose specified.
2. In a steam jet-apparatus for raising or forcing cold liquids, so constructing the
instrument that the current of cold water to be raised shall come in contact with
the exterior of the cone before being forced through it by the steam, as and for the
purpose specified.
Dated this 30th day of September 1889.
это
C. H. ROSHER.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.