Improvements in the Working of Internal Combustion Engines.
Year: 1897

page_text: Date of Application, 13th Oct., 1897
Complete Specification Left, 13th July, 1898- Accepted, 17th Sept.,
1898
PROVISIONAL SPECIFICATION.
Improvements in the Working of Internal Combustion Engines.
We, WILLIAM DENT PRIESTMAN and SAMUEL PRIESTMAN, of Holderness
Foundry, and HAROLD RICHARDSON, of 57, Walmsley Street, both in the Town
and County of Kingston-upon-Hull, Engineers, do hereby declare the nature
of this invention to be as follows:-
This invention relates to the working of hydrocarburetted-air and other
"internal combustion" engines, and consists essentially in diluting the working
charge with water.
With a view to regulate the temperature of the combustible charge, we draw
or force a small quantity of water into the motor cylinder, combustion cham-
ber or vapour chamber, of the engine; such water being in part volatilised by
the heat arising from the combustion of the charge, and in part thrown down
or recondensed on the walls of the motor cylinder.
By these means, the friction between the piston and the cylinder is reduced,
the escape of gas past the piston is diminished and the efficiency of the engine
improved by reason of the external circulating water carrying away a smaller
proportion of the heat generated.
Improvements in the Working of Internal Combustion Engines.
We, WILLIAM DENT PRIESTMAN and SAMUEL PRIESTMAN, of Holderness
Foundry, and HAROLD RICHARDSON, of 57, Walmsley Street, both in the Town
and County of Kingston-upon-Hull, Engineers, do hereby declare the nature
of this invention and in what manner the same is to be performed to be par-
ticularly described and ascertained in and by the following statement:
-
This invention relates to the working of hydrocarburetted-air and other
"internal combustion" engines, and consists essentially in diluting the working
charge with water.
:
With a view to regulate the temperature of the combustible charge, we draw
or force a small quantity of water into the motor cylinder, combustion cham-
ber or vapour chamber, of the engine; such water being in part volatilised by

page_text: the heat arising from the combustion of the charge, and in part thrown down
or recondensed on the walls of the motor cylinder.
One mode of carrying out our invention is illustrated, by way of example, in
the accompanying drawings. Fig. 1 is a vertical section taken through the water
inlet port and valve casing. Fig. 2 is a side elevation showing the means for
regulating the supply of water to the combustion chamber. Figs. 3, 4 and 5
are detail views of the regulating cock; Fig. 3 being a transverse section of the
plug, and Figs. 4 and 5 vertical sections looking respectively at the right and
left-hand sides of Fig. 3. The outline of a portion of the cylinder is indicated
by a dot-and-dash line.
A is the pipe for conducting the water, one end being connected at a with
the water-jacket of the motor cylinder, while the other end is similarly con-
nected with a valve B, whereof the valve box b communicates with the bore of a
casting C screwed into a boss formed on the cylinder, and in communication
with the combustion chamber of said cylinder. In the pipe A is a cock A¹
and gauge A whereby the flow of water may be regulated. The plug a¹ of the
cock A is formed with a small transverse hole a whereof one end is splayed
while the other end opens into a V or file cut, the object being to restrict the
flow of water through the pipe A. 6¹ is a valve, same being maintained on its
seat by means of the spring 62.
The valve b is shown closed, or in its normal position. Upon the piston in the
motor cylinder performing its outward stroke, the valve b' is relieved of pressure
and opens, owing to the vacuum caused in the cylinder, with the effect that
water in regulated quantities finds ingress to, or is drawn in with, the combustible
charge.
By these means, the friction between the piston and the cylinder is reduced,
the escape of gas past the piston is diminished and the efficiency of the engine
improved by reason of the external circulating water carrying away a smaller
proportion of the heat generated.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we claim:-
1. In the working of hydrocarburetted-air and other "internal combustion
engines, diluting the working charge with water, substantially as herein described
and whereby the temperature of the working charge is regulated, friction be-
tween the piston and the cylinder reduced and the efficiency of the engine
improved.
2. In the working of hydrocarburetted-air and other internal combustion "
engines, the herein described means for diluting the working charge with water,
same comprising a pipe in communication at one end with the water-jacket
of the motor cylinder and at the other end with the interior of the said cylinder,
combustion chamber or vapour chamber, a regulating cock for controlling the
supply of water and a non-return or delivery valve, arranged and operating sub-
stantially as set forth.