Improvements in Apparatus for Cooling Circulating Water in Gas and Oil and other Engines Working by Explosion of Vapour or Gas in Cylinders, and Improvements in Apparatus for Heating the Air to be Mixed with Oil or Gas Previous to Explosion.
Year: 1894

page_text: Date of Application, 3rd July, 1894
Complete Specification Left, 3rd Apr., 1895-4ccepted, 4th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Cooling Circulating Water in Gas
and Oil and other Engines Working by Explosion of Vapour or
Gas in Cylinders, and Improvements in Apparatus for Heating
the Air to be Mixed with Oil or Gas Previous to Explosion.
STEPHEN HARDING TERRY Engineer, 17 Victoria Street, Westminster, S. W.
do hereby declare the nature of this invention to be as follows:-
This apparatus has for its object the economy of water used for circulating and
also economy in oil or gas by the use of a portion of the waste heat in the water
for the warming of air before mixture with the gas, spray, or vapour. I am aware
that various methods have been proposed, some of which are in use for the cooling
of the water after it comes from the water jacket round the cylinder. In these
apparatuses the water in the form of spray or streamlets is exposed to a current of
air induced by the exhaust up the chimney, or the air is by the same cause made to
flow over the surface of the water in shallow trays & so to cool it. By these and
kindred arrangements evaporation is induced with consequent loss of water, and the
air although somewhat warmed is rendered too moist to be used economically for
explosive purposes in the cylinder. By my arrangement I provide a tank which
may be rectangular or cylindrical and may form the base or frame of the engine.
In this tank are a series of tubes as in a portable engine. Through these tubes air
is caused to flow as described in my Patent Specification No. 16496 1893, either by
the action of the exhaust in the chimney or by the aid of fans or other artificial
means. The tubes are surrounded by the water in the tank (means for circulating
which may be provided) and the air in this case does not come in contact with the
water, does not produce evaporation and consequent loss of water. It abstracts the
heat from the water whilst remaining dry and attains a temperature which admits
a portion of it being used advantageously to mix with the gas, vapour, or spray
before explosion, thereby raising the temperature of explosion and increasing the
economy. The air may be further heated to increase the efficiency in this direction
by a specially constructed heater consisting of passages cast in a chamber surrounding
the exhaust or a series of pipes arranged so as to abstract heat from the exhaust
vapour before entering the chimney. I provide suitable means for adjusting and
controlling the flow of air through the cooler and for circulating the water in the
tank.
Ond Tal.. 1004

page_text: Improvements in Apparatus for Cooling Circulating Water in Gas
and Oil and other Engines Working by Explosion of Vapour or
Gas in Cylinders, and Improvements in Apparatus for Heating
the Air to be Mixed with Oil or Gas Previous to Explosion.
1, STEPHEN HARDING TERRY, Engineer, of 17, Victoria Street, Westminster,
in the County of London, 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 apparatus has for its object the economy of water used for circulating and
also economy in oil or gas by the use of a portion of the waste heat in the water
for the warming of air before mixture with the gas, spray, or vapour. I am aware
that various methods have been proposed, some of which are in use, for the cooling
of the water after it comes from the water jacket round the cylinder. In these
apparatuses the water in the form of spray or streamlets is exposed to a current of
air induced by the exhaust up the chimney, or the air is by the same cause made to
flow over the surface of the water in shallow trays and so to coul it. By these and
kindred arrangements evaporation is induced and consequent loss of water, and the
air although somewhat warmed is rendered to moist to be used economically for
explosive purposes in the cylinder.
By my arrangement I provide a tank which may be rectangular or cylindrical
and may form the base or frame of the engine. In this tank are a series of tubes
as in a portable engine. Through these tubes air is caused to How as described in
my Patent Specification No. 16496:93, either by the action of the exhaust in the
chimney or by the aid of fans or other artificial means. The tubes are surrounded
by the water in the tank (means for circulating which may be provided) and the air
in this case does not come in contact with the water and therefore does not produce
evaporation and consequent loss of water. It abstracts the heat from the water
whilst remaining day and attains a temperature which admits of a portion of it.
being used advantageously to mix with the gas, vapour, or spray before explosion,
thereby raising the temperature of explosion and increasing the economy. The air
may be further heated to increase the efficiency in this direction by a specially
constructed heater consisting of passages cast in a chamber surrounding the exhaust
or a series of pipes arranged so as to abstract heat from the exhaust vapour before
entering the chimney. provide suitable means for adjusting and controlling the
flow of air through the cooler and for circulating the water in the tank.
It will be obvious that the above described invention may be carried into effect
in many ways and by various arrangements of parts and elements of parts; I will
however describe one arrangement in reference to the accompanying drawings
in which Fig. 1 is a side elevation partly in section, and Fig. 2 a section on
line Y-Z of Fig. 1 showing an apparatus adapted and fitted to a portable type
oil engine.
G is the cylinder; the combustion chamber; E the exhaust pipe from cylinder
to base of funnel F. A is a closed tank in which the circulating water is contained
and cooled B B represent a number of internal submerged air tubes which may be
arranged in any way adapted to afford sufficient cooling area. They are shown as
fitted between two tube plates a a, and through them atmospheric air is impelled
(by the exhaust or by a fan driven by the engine or otherwise
any convenient
manner) to the uptake box & communicating with the funnel F. The water in tank
or cooler A is circulated through the cylinder jacket by a centrifugal or suitable
pump, the suction pipe of which may with advantage be arranged to draw water
from the lower part of the tank, which is returned to and delivered at or about the

page_text: top thereof, whence as it becomes cooler it descends to the bottom; or the engine
may be fixed beneath the tank or cooler, whereby automatic or gravity circulation
will ensue without the aid of pumping, and this form of construction offers many
advantages for it forms an undertype oil or explosion engine. The air in its passage
through the cooler is warmed to some extent, but in order to further leat that
portion thereof which having passed through the tubes B into the box is to be
used for mixing with the charge in the combustion chamber 9. I surround the hot
exhaust pipe E with a heating jacket or chamber D through which the said air
must pass on its way to the combustion chamber, and thus it takes up further heat
and becomes thoroughly dried, and deprived of moisture.
By this arrangement as above stated great economies and other advantages are
rained; firstly, in water, since (this being efficiently cooled as described in a closed
vessel) there is no loss through evaporation, and the rapid cooling assists circulation;
and secondly, in oil or gas, since the heat abstracted from the hot water by the
passing air (which effects its cooling) serves to heat and dry such air, and to
hereby render it more effective for admixture with the oil, gas, or vapour in the
engine cylinder for explosive purposes. These economies are of special advantage
in locomotive explosion engines, as well as in cases where water is scarce.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. Means such as are hereinabove set forth for cooling the circulating water used
in gas, oil, and other explosion engines, and at the same time heating and drying
the air which is to be mixed with the charge, which consist essentially is passing
cold air through tubes submerged in the hot circulating water in a closed tank or
cooler, and utilizing the air so heated and dried, substantially in the manner
described.
2. In connection with an explosion engine, the arrangement of a closed tubulous
circulating water tank constructed or adapted for use substantially as specified in
combination with a supplementary air heating device such as D surrounding or
applied to the cylinder exhaust pipe E, as and for the purposes above set forth.
Dated this 3rd day of April 1895.