Year: 1890

page_text: Date of Application, 5th Nov., 1890
Complete Specification Left, 5th Aug., 1891-Accepted, 5th Sept., 1891
I, VICTOR AIMÉ PROST, of Mayenmoutier, in the Republic of France, Director,
do hereby declare the nature of this invention to be as follows:-
My invention relates to an automatic hydro-extractor which allows the water to
pass whilst arresting the useful steam.
The improved hydro-extractor constructed according to the said invention
comprises a cylindrical receptacle provided with an admission pipe and a discharge
pipe. A cover is fixed upon the receptacle by means of three cottars. To the
bottom of the receptacle and at its centre is secured a column communicating
with the admission pipe and having a valve seat at its upper orifice which at a
given moment can be closed by a valve G fixed to a screw with a quick thread,
the nut of which is secured to the aforesaid column. In this nut is provided a
chamber wherein the valve is placed and which is pierced with a number of orifices.
The valve is simply formed of a small disc of hard india-rubber held in position by
a small screw. The above mentioned screw is provided with a lever arm, the
extremity of which engages with a groove formed in a bell of galvanized sheet
iron or copper resting upon the bottom of the receptacle and in which is enclosed
the aforesaid column and the screw carrying the valve. This bell has at its top a
cylindrical rod of bronze. Upon the cover of the receptacle are placed two guides
provided with helical slots in which can move a cross-piece fixed to the said rod by
means of a pressing screw and nut. The bell being raised is compelled by the
cross-piece to turn upon its axis, which movement is transmitted to the said lever
arm by the bell, so that the screw will descend in its nut until the valve bears upon
its seat.
Suppose the extractor is set in communication through the admission pipe with
the water outlet orifice of a steam apparatus and the receptacle is filled with water.
The bell resting upon the bottom of the receptacle, the valve is lifted. The steam
being admitted to the apparatus the air which fills it escapes through a cock which
is opened for the purpose. When steam is blown out through this cock the latter
is closed and the extractor commences to operate. As long as water arrives it
flows out freely through the raised valve, escapes through the aforesaid orifices
formed in the width of its chamber and leaves through the discharge pipe, but
when steam arrives in the extractor it exerts pressure upon the under side of the
upper part of the bell which is then lifted. At the same time this bell turns as
above stated, acts upon the lever arm which causes the screw to descend so that
the valve will intercept the steam. When the bell is no longer subjected to the
pressure of the steam its upward movement ceases; it descends imperceptibly by
reason of its own weight, and this movement in the opposite direction to that of the
former movement causes the valve to open again. If water arrives the bell
continues to descend and the valve opens further, but as soon as steam passes in,
the bell rises, finally assuming a mean position wherein it will control the opening
of the valve so as to allow only the passage of water without useful steam.
When the work is terminated and the steam arrested, a vacuum will be produced
in the apparatus so that it is necessary to open the aforesaid cock for allowing the
access of air, but should this by inadvertence be forgotten the air will be sucked
by the extractor which it will traverse in order to pass into the apparatus.
The
The cost of keeping the apparatus in order is reduced to a minimum.
apparatus can be taken to pieces in a few minutes, because for this purpose it is
sufficient to remove the above-mentioned cottars, take hold of the slotted guides

page_text: for removing at the same time the cover and bell so as to uncover the screw
provided with the said valve.
The exterior movement will at once indicate whether the extractor acts and by
a simple pressure with the finger upon the rod referred to, the regularity of the
operation may be ascertained.
Dated this 5th day of November 1890.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Steam Traps.
I, VICTOR AIME PROST, of Mayenmoutier, in the Republic of France, Director,
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:-
My invention relates to an automatic hydro-extractor which allows the water to
pass whilst arresting the useful steam.
In the accompanying drawing
Figure 1 is a vertical section of my improved extractor.
Figure 2 is a plan of the same and,
Figures 3 and 4 show a detail of the same.
The improved hydro-extractor constructed according to the said invention
comprises a cylindrical receptacle L provided with an admission pipe Q and a
discharge pipe N. A cover C is fixed upon the receptacle by means of three
cottars A. To the bottom of the receptacle and at its centre is secured a column U
communicating with the admission pipe Q and having a valve seat at its upper
orifice which at a given moment can be closed by a valve G fixed to a screw F
with a quick thread, the nut of which is secured to the aforesaid column U. In
this nut is provided a chamber in which the valve is placed and which is pierced
with a number of orifices Z. The valve is simply formed of a small disc of hard
india-rubber held in position by a small screw.
The above mentioned screw F is
provided with a lever arm I the extremity of which engages with a groove H
formed in a bell D of galvanized sheet-iron or copper resting upon the bottom of
the receptacle and in which are enclosed the aforesaid column and the screw
carrying the valve.
This bell has secured to its top a cylindrical rod T of bronze.
Upon the
cover C of the receptacle are placed two guides B B provided with helical slots
in which a cross-piece P fixed to the said rod T by means of a set screw K and a
nut V is adapted to move.
When the bell is raised it is compelled by the cross-piece P to turn upon its
axis, in the direction of the arrow X Figure 1. This movement is transmitted to
the said lever arm I by the bell so that the screw will descend in its nut until the
valve bears upon its seat.
The bell D is provided with an automatic blow off valve designed to allow the
escape of the air. This valve shown separately to full size scale in Figures 3
and 4 is composed of a disc a of bronze provided at its centre with a hole b of
about 23 millimetres in diameter, the said disc being fixed upon the upper part of
the bell D. Within the said hole is arranged to move a triangular body part c
of bronze carrying at its lower extremity a disc d of hardened indiarubber of
about 32 centimetres in diameter and held by means of a nut e. This part c carries
at the upper part of its angles a flanger so that when it rests upon the disc a there
is left between it and the disc a free space of about 3 millimetres.
Suppose the extractor is set in communication through the admission pipe Q
with the outlet orifice of a steam apparatus. The bell resting upon the bottom of
the receptacle, the valve G is lifted.

page_text: When steam is admitted into the apparatus through the inlet Q the air is first
driven under the bell D, passes through the blow off valve and to the outside
through the outlet pipe N but as steam arrives in the bell D the pressure
augments imperceptibly and when the pressure is sufficient the disc of the
blow off valve causes the same to be closed and then enables the bell to operate,
which takes place in the following manner. As long as water passes through Qit
flows freely through the valve G which is raised and through the four orifices Z
passing out through the pipe N. But when steam passing into the extractor as
above stated creates a pressure upon the under side of the upper part of the bell
the latter is then lifted. At the same time the bell turns as above stated, and
acts upon the lever arm I which causes the screw F to descend so that the valve G
will intercept the steam. When the bell is no longer subjected to the pressure of
the steam its upward movement ceases; it descends imperceptibly by reason of its
own weight, and this movement causes the valve to be open again. If water passes
into the extractor the bell D continues to descend and the valve G opens further,
but as soon as steam passes in the hell rises, finally assuming a mean position
wherein it will control the opening of the valve G so as to allow only the passage
of water without useful steam.
When the work is terminated and the steam is arrested a vacuum will be
produced in the apparatus. Then disc d of the blow off valve is automatically
lowered and air can enter the receptacle D by passing through the said valve and
below the valve G of the extractor.
The cost of keeping the apparatus in order is reduced to a minimum. The
apparatus can be taken to pieces in a few minutes, because for this purpose it is
sufficient to remove the above-mentioned cottars A. of the plate, take hold of the
slotted guides for removing at the same time the cover and bell so as to uncover
the screw provided with the said valve G. The exterior movement will at once
indicate whether the extractor acts, and by a simple pressure with the finger upon
the rod referred to the regularity of the operation may be ascertained.
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
The improved hydro-extractor provided with an interior screw having a valve
operating automatically in such a manner as to permit the outlet only of water and
prevent the escape of useful steam, combined and operating substantially as above
described with reference to the accompanying drawing.
Dated thin 5th day of August 1001
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.