IMPROVEMENTS IN FEEDING STEAM GENERATORS, APPLICABLE ALSO TO THE CONDENSATION OF STEAM AND THE PRODUCTION OF VACUUM
Year: 1864

page_text: LETTERS PATENT to Ernest Ulysse Parod, of Paris, in the Empire. of
France, Engineer, for the Invention of "IMPROVEMENTS IN FEEDING
STEAM GENERATORS, APPLICABLE ALSO TO THE CONDENSATION OF STEAM AND
THE PRODUCTION OF VACUUM."
Sealed the 30th September 1864, and dated the 2nd April 1864.
VISIONAL SPECIFICATION left by the said Ernest. Ulysse Parod
at the Office of the Commissioners of Patents, with his Petition, on
the 2nd April 1864.
ERNEST ULYSSE PAROD, of Paris, in the Empire of France,
eer, do hereby declare the nature of the said. Invention for "IMPROVE-
FEEDING STEAM GENERATORS, APPLICABLE ALSO TO THE CONDENSATION OF
THE PRODUCTION OF VACUUM," be as follows:-
1
tion consists in the employment of a jet of water under pressure,
ner as to induce along with the jet a current of gas or steam,
the condensation of the escape, steam of steam engines, and
a vacuum; whilst at the same time as the jet of water
duce the current of gas or steam possesses a high velocity
momentum, it is proposed to utilise its momentum by
any with the condensed steam, to penetrate into the steam
ucing a novel system of feeding steam generators.. The
e jet should be such that its momentum will be greater
I sized jet issuing from the boiler under the steam
ill thus be seen. that this Invention embraces two
be carried out and utilized together or separately.

page_text: Firstly, the condensation of the waste steam of steam engines by the lateral
induction of such steam produced by a jet of water under pressure; and,
secondly, the forcing of this same jet of water with the condensed steam into
the boiler or generator.
According to one mode of practically carrying out this Invention, it is pro-
posed to force water by means of a pump or otherwise into a strong closed air
vessel or receiver provided with a manometer to show the water pressure, and
a water-level guage. The object of this receiver is to insure as nearly as
possible a regular force of jet by the pressure of the air in the upper part of
the receiver, but it is not indispensable where a steady pressure is available
from any other source. A cock is provided for the discharge of air or water
from the vessel or receiver when requisite. From the lower part of the
receiver a pipe branches off provided with a stop-cock, which enables the
working of the apparatus to be arrested at pleasure by closing the cock; this
pipe contains a jet nozzle, which may be more or less opened or closed by a
valve or plug fitting therein worked by a screw spindle passing through a
stuffing box. The jet as it issues from the nozzle is directed forward into
a contracted portion of the pipe, and between the jet nozzle and this contracted
part a branch pipe communicates leading to the exhaust or waste-steam pipe
of a steam engine, or to any vessel or chamber in which a vacuum or partial
vacuum is required to be produced. The steam will be drawn forward or induced
by the action of the water jet, and will be condensed by contact therewith and
carried forward in the form of water of condensation along with the jet back
into the boiler if it be required to feed a steam boiler, or allowed to esca
simply if condensation or the production of a vacuum alone bé desired
which purpose the pipe which receives the jet after passing through
tracted part may be provided with a lateral branch having
stop-cock or tap, and another branch leading direct into the st
small valve opening inwards towards the boiler being fitted in
the pipe to prevent the escape of the water from the boiler
SPECIFICATION in pursuance of the conditions of the
by the said Ernest Ulysse Parod in the Great Seal
30th September 1864.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters.
Patent, bearing date the Second day of April, in the year of our Lord.
One thousand eight hundred and sixty-four, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Ernest Ulysse Parod, Her special license that I, the said:
Ernest Ulysse Parod, my executors, administrators, and assigns, or such:
others as 1, the said Ernest Ulysse Parod, my executors, administrators,
or assigns, should at any time agree with, and no others, from time to
time and at all times thereafter during the term therein expressed, should:
and lawfully might make, use, exercise, and vend, within the United Kingdom:
of Great Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for "IMPROVEMENTS IN FEEDING STEAM GENERATORS, APPLICABLE ALSO
TO THE CONDENSATION OF STEAM AND THE PRODUCTION OF VACUUM," upon the
condition (amongst others) that I, the said Ernest Ulysse Parod, my:
executors or administrators, by an instrument in writing under my hand.
and seal, or under the hand and seal of one of them, should particularly
describe and ascertain the nature of the said Invention, and in what manner.
the same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately after the
date of the said Letters Patent..
NOW KNOW YE, that I, the said Ernest Ulysse Parod, do hereby.
declare the nature of my said Invention, and in what manner the same is to.
be performed, to be particularly described and ascertained in and by the
✓ wing statement, reference being had to the accompanying Drawings,
5 Enginhe letters and figures marked thereon, that is to say :-
MENTS Invention consists in the employment of a jet of water under
STEAM AND Such a manner as to induce along with the jet a current of gas or
This Invery effecting the condensation of the escape steam of st m
in such a man production of a vacuum, whilst at the same time as the jet of:
O thereby effectines to induce the current of gas or steam possesses a high
the production oiderable momentum, it is proposed to utilise its momentum
which serves to iompany with the condensed steam to penetrate into the
and considerable as producing a novel system of feeding steam generators..
causing it, in compre of the jet should be such that its momentum will be
5 generator, thus proon equal sized jet issuing from the boiler under the steam
pressure or force of twill thus be seen that this Invention embraces two.
than that of an equay be carried out and utilised together or separately.
pressure therein: It won of the waste steam of steam engines by the lateral
distinct ideas, which may produced by a jet of water under pressure; and,

page_text: secondly, the forcing of this same jet of water with the condensed steam into
the boiler or generator.
According to one mode of practically carrying out this Invention, it is pro-
posed to force water by means of a pump or otherwise into a strong closed
air vessel or receiver provided with a manometer to show the water pressure
and a water-level guage. The object of this receiver is to ensure as nearly as
possible à regular force of jet by the pressure of the air in the upper part of
the receiver, but it is not indispensable where a steady pressure is available
from any other source. A cock is provided for the discharge of air or water
from the vessel or receiver when requisite. From the lower part of the
receiver a pipe branches off provided with a stop-cock or valve, which enables
the working of the apparatus to be arrested at pleasure by closing the same.
This pipe contains or leads to a jet nozzle, which may be more or less opened
or closed by an adjustable valve or plug worked by a screw spindle passing
through a stuffing box. The jet as it issues from the nozzle is directed
forward into a contracted portion of the pipe, and between the jet nozzle and
this contracted part a branch pipe communicates leading to the exhaust or
waste steam pipe of a steam engine, or to any vessel or chamber in which a
vacuum or partial vacuum is required to be produced. The steam will be
induced or carried along by the action of the water jet, and will be condensed
by contact therewith and carried forward in the form of water of condensation
along with the jet back into the boiler if it be required to feed a steam
boiler, or allowed to escape simply if condensation or the production of a
vacuum alone be desired, for which purpose the pipe which receives the pé
after passing through the contracted part may be provided with a; for
branch having a discharge stop-cock or tap, and another branch lead the con-
into the steam boiler, a small valve opening inwards towards the discharge
fitted in this branch of the pipe to prevent the escape of the yeam boiler, a
boiler when the jet is not turned on.
this branch of
And in order that my said Invention may be fully unders' when the jet is
proceed more particularly to describe the same, and for th
refer to the several Figures on the annexed Sheet of I
letters of reference indicating corresponding parts in all th
Fig. 1 of my Drawings represents a vertical section
improved apparatus. Water is forced into the air v
aperture B by means of any suitable pump, or by t
artificial pressure. C is a retaining valve fitted insi
D which leads from the interior of the air vessel, LL COME, I, ERNEST
being sufficiently powerful to prevent the valve for Engineer, send greeting.
Letters Patent, filed
Patent Office on the

page_text: pressure is obtained. in the vessel. The air which is confined and compressed,
in the upper part Ę of the vessel serves as a pressure regulator. F is a stop;
valve for starting and stopping the working of the apparatus. A pressure,
guage should be-fitted to the vessel A in order to show the degree of pressure;
therein, and a water guage should also be provided to indicate the level of the,
water in such vessel. The water which escapes by the valve C passes through,
one or more nozzles G of any suitable form, and flows into and through the
funnel-shaped opening II, the orifice of which should have the same form in
transverse section as that of the jet nozzle G, but rather larger. The powerful
jet of water thus obtained will draw along with it the steam which arrives by.,
the escape or eduction pipe I of a steam engine, and will carry it downwards
to the base of the funnel mouth, where the steam will become intimately:
mixed with the water on passing through the contracted orifice K, which, as.
I before stated, is slightly larger than that of the jet nozzle. Beneath the,
orifice K a conical pipe L may be made to communicate with the inlet valve.
box M of a suction and force pump N of any suitable construction, which is.
shewn in transverse section in Fig. 1. This pump (of a capacity greater than..
the volume of water discharged during one stroke of the piston by the jet,
under the pressure of the air vessel) will exert a powerful sucking action, which.
will-augment the motive power of the jet, and at the same time will prevent:
any choking action which might occur at the base of the funnel mouth. So soon.
as the piston of this pump has completed its suction stroke, it will on its return.
stroke force the water and condensed steam (previously drawn in through the
ck O) through the lower clack P and pipe Q into the boiler, or into a reser-:
tank according to the level of the water in the boiler. For this purpose-
is fitted on to the pipe Q leading from the force pump to the boiler,.
when open
allows the water and condensed steam to be discharged:
reservoir. In this case the retaining valve S in the boiler is closed,
of the steam therein, and the whole of the water discharged.
ys in to the tank, whence it is again drawn up by the force.
water which serv
at B to the air vessel, and made to pass again through the:
velocity and consi e described, to be re-discharged into the tank or directed.
by causing it in che case may be. When it is necessary to feed the boiler
steam generator, thu
losed, and the jet of water and condensed steam will then be
The pressure or fore
er, opening the valve S in its passage. Although I have:
greater than that of an
a suction and force pump situate between the jet nozzle:
pressure therein. It
iler, yet this pump is not absolutely necessary to the:
distinct ideas which ma
tus, as the jet may if preferred be directed at once:
Firstly, the condensatio
without the intervention of the suction and force;
induction of such steam
follo
and to
My said
pressure, in
steam, thereby
engines and the

page_text: pump or other equivalent, it being simply necessary to impart sufficient force
to the jet or jets to overcome the pressure in the boiler, for which purpose an
excess of pressure in the air vessel A should be constantly maintained. When
the feed is supplied to the boiler direct, an intermediate pipe Q' may be
employed similar to that shewn in Fig. 2, which is provided with an ordinary
cock and a. retaining valve, or with a three-way cock R', as shown in the
Drawing, with or without the retaining valve, fitted in the branch pipe leading
to the boiler.
Fig. 3 is a sectional view of a slightly modified arrangement of apparatus
constructed on precisely the same principle as that shewn in Fig. 1, but
having a tubular jet so as to utilise both the interior and exterior of the jet
in inducing and condensing the escape steam. According to this modification
the steam arrives simultaneously by the pipes I, I', and the lid or cover T
of the chamber U has an internal tubular projection or nozzle V formed
thereon corresponding with the straight portion of the pipe I, such internal
projecting nozzle entering the jet nozzle G, and terminating flush therewith
at its lower extremity as shewn. An annular space is left between the
exterior of the projecting nozzle V and the interior of the jet nozzle G,
through which annular space or opening flows," in the form of a tubular or
hollow jet, the water which is forced from the receiver or air vessel through
the pipe D. This tubular jet directed towards the bottom of the funnel
mouth H passes between the sides thereof and the external surface of the cone
W, the axis of which coincides exactly with that of the jet pipes above. To
the under side of the sole plate X, X, of this cone is fixed the pipe L, whi
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may either lead to the valve box of a suction and force pump, as herein before
described and illustrated at Fig. 1, or may pass direct to the boiler without
the intervention of the pump. The steam which enters by the pipe I' is
carried along by the friction of the inner sides of the jet against the inclined
surface of the cone W as far as the bottom of the funnel mo
uth, whilst the
steam which arrives by the pipe I round the exterior of the jet is carried
along by the friction of the external portion of the jet against the inner sides
of the funnel mouth H, the whole operating exactly in the manner herein-
before described. The temperature of the injection waters not of any great
moment, since the water operates principally by its inductive action, and
possesses the property of condensing steam up to a temperatue of 212° Fabren-
heit, but it will be advisable not to use water having
temperature higher
than from 170° to 180° Fahrenheit, in order that there may be no necessity
for imparting an excessive velocity to the jet, which would involve the
use of inconveniently large pumps for supplying the air vessel. It is

page_text: obvious that the form of the apparatus may be modified, and that any number
of jets may be applied to one boiler; that the condensing and feeding pro-
perties of the apparatus may be applied to various purposes, and in different
ways, whether the liquid jet traverse the steam to be condensed or envelope
it, or be employed in a tubular form, so as to admit of the steam entering the
interior of the jet and surrounding the exterior thereof at the same time, or
is mingled or intimately mixed with the steam in any other manner.
Having now described and particularly described the nature of my said
Invention, and the manner in which the same is or may be used or carried
into effect, I would observe, in conclusion, that what I consider to be novel
and original, and therefore claim as the Invention secured to me by the
herein-before in part recited Letters Patent is,-
First, the general construction and arrangement of apparatus for feeding
steam generators, condensing steam, and producing a vacuum separately or
together by the aid of a jet or jets of water substantially as herein-before
described and illustrated by my Drawings.
Second, the system or mode of condensing steam and feeding steam boilers
by the inductive power of a jet or jets of water, obtained substantially in the
manner herein-before described.
In witness whereof, I, the said Ernest Ulysse Parod, have to this my
Specification set my hand and seal this Twenty-ninth day of
September, One thousand eight hundred and sixty-four.
E. U. PAROD. (L.B.)