Improvements in or applicable to Internal Combustion Engines.
Year: 1893

page_text: Date of Application, 30th June, 1893
Complete Specification Left, 30th Apr., 1894-Accepted, 2nd June, 1894
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Internal Combustion Engines.
We, WILLIAM DENT PRIESTMAN and SAMUEL PRIESTMAN, Directors of
Priestman Brothers, Limited, of Holderness Foundry, 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 motor engines operated by the combustion of gaseous
or vaporous hydrocarbon mixed with air, such combustion taking place in a water-
jacketed cylinder; the object of our present invention being to reduce, or to
prevent excessive rise in, the temperature of the water which circulates through
the said cylinder-jacket, and thereby to render possible the employment, with an
engine of any given size, of a considerably reduced body of cooling water,
economy in cost, space occupied and weight resulting.
According to one mode of carrying out our invention, we cause the water, after
leaving the cylinder-jacket and before returning to the tank, to pass through a
finely perforated plate or other device adapted to separate the water into thin
streams or spray, in which state it is exposed to the influence of a current of cold
air flowing by preference in a direction opposed to that traversed by the streams
of water. The current of air may be created by a fan or like instrument driven
by the engine, or may be induced by causing the exhaust gases to escape from a
nozzle arranged within a casing, as from a locomotive blast-pipe; the air-inlets
being situated by preference at the lower part of the casing.
According to an alternative mode of accomplishing the object of our invention,
instead of exposing the circulating water as a spray or in fine streams to the
cooling action of a current of air, the circulating tank may be fitted with numerous
thin tubes or with a coil or coils arranged beneath the water-level, a fan or
blower, or the suction due to the exhaust gases escaping as from a blast-pipe,
being employed to force or draw cold air through the said tubes or coil and
thereby to cool, or to prevent excessive rise of temperature in, the water contained
in the tank and bathing the tubes or coil.
Dated the 30th day of June 1893.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Chartered Patent Agent.
COMPLETE SPECIFICATION.
Improvements in or applicable to Internal Combustion Engines.
We, WILLIAM DENT PRIESTMAN and SAMUEL PRIESTMAN, Directors of
Priestman Brothers, Limited, of Holderness Foundry, 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 particularly
described and ascertained in and by the following statement :-
This invention relates to motor engines operated by the combustion of gaseous
or vaporous hydrocarbon mixed with air, such combustion taking place in a water-
jacketed cylinder; the object of our present invention being to reduce, or to
prevent excessive rise in, the temperature of the water which circulates through
the cylinder-jacket, and thereby to render possible the employment, with an engine
Price Al

page_text: of any given size, of a considerably reduced body of cooling water, economy in
cost, space occupied and weight resulting.
In the accompanying drawings, Fig. 1 is a view, partly in vertical section and
partly in side elevation, showing a portable engine constructed in accordance with
our invention. Fig. 2 is a similar view representing an alternative construction.
According to the mode of carrying out our invention illustrated in Fig. 1, we
cause the water, after leaving the cylinder-jacket A and before returning to the
tank B, to pass through a finely perforated plate C or other device adapted to
separate the water into thin streams or spray, in which state it is exposed to the
influence of a current of cold air, indicated by the arrows a, flowing in a direction
opposed to that traversed by the streams of water, indicated by the arrows y.
The current of air may be created by a fan or like instrument driven by the
engine. In the construction shown in the drawing, it is, however, induced by
causing the exhaust gases, indicated by the arrows z, to escape from a nozzle Ď
arranged within a casing E, the action resembling that of a locomotive blast-pipe.
The water from the jacket A may be conducted to the casing E by means of a
pipe F furnished with a rose G, as represented in the drawing. H is the air-
inlet. K is the suction-pipe leading to the pump by which water is drawn from
the tank B and delivered to the jacket A.
According to the alternative mode illustrated in Fig. 2 of accomplishing the
object of our invention, instead of exposing the circulating water as a spray or in
fine streams to the cooling action of a current of air, the circulating tank B may
be fitted with numerous thin tubes B¹ (or with a coil arranged beneath the water-
level), the suction due to the exhaust gases escaping from the nozzle D being
employed to force or draw cold air through the tubes B' (or coil) and thereby to
cool, or to prevent excessive rise of temperature in, the water contained in the
tank B and bathing the tubes B' (or coil). A fan or blower may be used, instead
of the nozzle D, for creating the current of cold air. The water is conducted
from the jacket A to the tank B by the pipe F', though a pipe F and rose G
arranged in the casing E, as shown in Fig. 1, may be employed, in addition to the
tubes B (or coil), if preferred.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, we claim :-
:-
1. In an internal combustion engine, subjecting the water which circulates
through the cylinder-jacket to the cooling action of a current of air, substantially
as herein described.
2. The improved means for reducing, or preventing excessive rise in, the
temperature of the water which circulates through the cylinder-jacket of an
internal combustion engine, substantially as described with reference to Fig. 1 of
the accompanying drawings, and whereby a considerably smaller volume of water
is rendered sufficient.
3. The alternative means for reducing, or preventing excessive rise in, the
temperature of the water which circulates through the cylinder-jacket of an
internal combustion engine, substantially as described with reference to Fig. 2 of
the accompanying drawings.
Dated the 30th day of Anxil 1901