Improvements in Hydraulic Motors.
Year: 1897

page_text: Date of Application, 28th Dec., 1897
Complete Specification Left, 13th Aug., 1893-Accepted, 28th Dec., 1898
Improvements in Hydraulic Motors.
I, RAOUL MOREL DE TANGRY, Engineer, of 92, Avenue du Sud, Anvers, in the
Kingdom of Belgium, do hereby declare the nature of this invention to be as
follows:
This invention relates to an improved hydraulic motor working with so-called
"closed" cycle, since owing to its particular arrangement, a given volume of
liquid is kept in constant circulation under variable pressure, whereby the
useful or working effect exerted upon the power transmitting mechanism is
rendered continuous.
The essential feature of this improved motor consists in the insertion, between
two water reservoirs or columns, namely one for high and the other for low
pressure; of the power transmitting mechanism and of a transfusion vessel, in
such a manner that the liquid, under high pressure, admitted to the power
mechanism and emitted into the low pressure reservoir is owing to this said
low pressure, collected in the transfusion vessel and subsequently forced by the
latter into the high pressure reservoir; the closed cycle, thus formed, com-
prising two phases, namely, that of high and low pressure; the useful or working
effect of the motor being proportional to the difference of the two pressures.
The degree of pressure in the two reservoirs may be obtained in any suitable
manner, for instance by appropriately arranging the corresponding heights of
the two water columns, but as this method is rather cumbersome in most cases
of practical application, it is preferable to use closed receptacles, instead, in
which receptacles the liquid compresses a gaseous medium such as air.
The motor may be of any kind, it being however preferable to choose the
rotary form and to employ a turbine of the most advantageous type.
The transfusion vessel, on the other hand is so constructed that quantities of
liquid variable relatively to the maximum pressure can be forced into the reser-
voir without its regular operation being thereby interfered with, and for this
purpose, the most appropriate system is the arrangement of a vessel, in which
an explosion of a gaseous mixture in contact with the liquid to be forced is
produced.
The water reservoirs are connected to the motor and transfusion vessel by
suitable conduits and valves and the explosive device is connected to or forms
part of the transfusion vessel and is suitably connected to the motor shaft.
Dated this 28th day of December 1897.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.
COMPLETE SPECIFICATION.

page_text: or by any other appropriate igniting device. The shaft of the injector I in its
turn actuates a slide valve V for discharging the combustion gases.
The operation of this improved hydraulic motor can be easily inferred from
the above description.
When the motor has been adjusted to a given maximum flow of liquid per
second, the liquid, compressed in the reservoir H flows after having exerted
its power upon the motor M, through into the reservoir B, thus increasing the
normal pressure therein and causing the valve a¹ to be opened and subsequently
rising to the maximum level in the cylinder C.
At this moment the explosion takes place, so that the volume of liquid is
forced back, and likewise the valve r¹ which retains the liquid in the reservoir H
wherein the cycle is closed at the time when the open valve V discharges the
products of combustion, thus reducing the pressure in the cylinder to zero, so
as to allow of a fresh quantity of liquid being admitted and forced back by a
fresh explosion and so forth.
On stopping the motor by closing the shutter O. the operation of the trans-
fusion apparatus is also instantly stopped so that the pressure existing at this
moment in the reservoir H remains accumulated therein and will serve for again
starting the motor by simply opening the shufter ().
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. A hydraulic motor with a closed cycle of operations, its characteristic
feature consisting in the insertion between the high pressure reservoir H and the
low pressure reservoir B, of a power transmission device M and of a transfusion
apparatus C, the latter collecting the liquid discharged from the said power
transmission device into the low pressure reservoir in order to force it back into
the high pressure reservoir, by which the power transmission device is supplied.
2. In the hydraulic motor with closed cycle of operations, as ascertained in
the first claim, the use of a turbine of any appropriate type, as the power trans-
mission device; the said turbine being inserted between the conduits A and E;
and the use of the shutter in connection with the emission conduit E.
3. In the hydraulic motor with closed cycle of operations as described, the
means of utilizing as a transfusion apparatus, a cylinder, in which a gaseou³
mixture is exploded, this cylinder being supplied with a combustible charge
by means of an injector I actuated by the motor M simultaneously with the
valve V for discharging the products of combustion, in order to produce during
a given time the number of explosions necessary for transfusing the amount of
liquid emitted from the power transmitting device, the said liquid being retained
in the reservoir H by the valve r and prevented from returning toward the
reservoir B by the valve a¹.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.