Improvements in Cooling the Surfaces of the Cylinders of Explosively Driven Engines.
Year: 1897

page_text: Date of Application, 25th May, 1897
Complete Specification Left, 16th Feb., 1898-Accepted, 19th Már., 1898.
DEPORTIVATION.
Improvements in Cooling the Surfaces of the Cylinders of Explosively
Driven Engines.
I, FREDERICK RICHARD SIMMS, of Amberley House, 12, Norfolk Street, Strand,
in the County of London, Engineer, do hereby declare the nature of this invention
to be as follows;-
This invention relates to improvements in cooling the surfaces of the cylinders
of explosively driven engines, the said invention forming an improvement upon the
invention described in the Specification of former Letters Patent granted to me,
namely, No. 10424 of the 15th May 1896.
In the specification of my said former patent, I described a means of cooling the
surfaces of the cylinders of explosively driven engines or motors wherein the engine
cylinder is provided with a number of radiating ribs and along which a current of
air is caused to flow by the motion of the said cylinder or by means of a fan; the ribs
serving to retard the air current and to provide a larger surface for the radiation
of heat from the cylinder.
upon
Now, according to this invention I construct the cylinders of explosively driven
engines with jackets preferably containing water, another suitable liquid, gas or
other suitable material and I arrange the radiating ribs externally around the said
jacket. Or, in lieu of the water jacket, I project a stream or spray of water
the blades of the fan producing the air current which water is thereby sprayed on
to the outside of the cylinder wall and immediately vapourized thus abstracting
heat from the said wall. Or instead of being sprayed from the blades of the air
propeller, the water can be introduced into the current of air in any other suitable
manner.
When the water or other suitable liquid is confined in the jacket it may be con-
nected to a supply tank. In the case where the water is sprayed I advantageously
provide means for regulating its supply, it being obvious that when the air sur-
rounding the cylinder is colder less water is required.
The radiating ribs are preferably formed longitudinally on the surface of the
cylinder or cylinder jacket and are made of a metal which is a good conductor of
heat, for instance, copper.
With this arrangement it will be obvious that in addition to the heat abstracted
from the walls of the cylinder by the flow of the air current, I also obtain the
advantage derived from the employment of a water jacket, or from the water sprayed
or otherwise brought into contact with the surface of the cylinder of the engine
or motor in such a manner that it is vapourized thus abstracting heat.
Dated the 25th day of May 1897.
G: F. REDFERN & Co.,
,4, South Street, Finsbury, London, Agents for the Applicant.

page_text: Improvements in Cooling the Surfaces of the Cylinders of Explosively
Driven Engines.
I, FREDERICK RICHARD SIMMS, of Amberley House, 12, Norfolk Street, Strand,
in the County of London, Engineer, 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 improvements in cooling the surfaces of the cylinders 5
of explosively driven engines, the said invention forming an improvement upon the
invention described in the Specification of former Letters Patent granted to me,
namely, No. 10424 of the 15th May 1896.
In the specification of my said former patent, I described means for cooling the
surfaces of the cylinders of explosively driven engines or motors, wherein the engine
cylinder is provided with a number of radiating ribs and along which a current of
air is caused to flow by the motion of the said cylinder or by means of a fan, the ribs
serving to retard the air current and to provide a larger surface for the radiation
of heat from the cylinder.
Now, according to this invention I construct the cylinders of explosively driven
engines with jackets preferably containing water, or other suitable liquid, gas or
other suitable material and I arrange the radiating ribs externally around the said
jacket. Or, in lieu of the water jacket, I project a stream or spray of water upon
the blades of the fan producing the air current which water is thereby sprayed on
to the outside of the cylinder walls and immediately vapourized thus abstracting
heat from the said walls. Or instead of being sprayed from the blades of the air
propeller, the water can be introduced into the current of air in any other suitable
manner.
When the water or other suitable liquid is confined in the jacket it may be con-
nected to a supply, tank. In the case where the water is sprayed I advantageously
provide means for regulating its supply, it being obvious that when the air sur-
rounding the cylinder is colder less water is required.
i
The radiating ribs are preferably formed longitudinally on the surface of the
cylinder or cylinder jacket and are made of a metal which is a good conductor of
heat, for instance, copper.
By my invention it will be obvious that, in addition to abstracting heat
from the walls of the cylinder by the flow of the air current, I also obtain the
advantage derived from the employment of a water jacket, or from the water sprayed
or otherwise brought into contact with the surface of the cylinder of the engine
or motor in such a manner that it is vapourized thus abstracting heat.
In combination with the fan I may also arrange a dynamo for igniting the
explosive mixture for driving the engine, the said dynamo preferably having its
armature mounted upon the rotating fan spindle and its field magnets secured to a
fixed part of the engine, although, if desired, the reverse arrangement can be made
use of.
To enable my invention to be fully understood I will describe it by reference to
the accompanying drawings in which;-
Figure 1 is a sectional elevation of an explosion engine cylinder having a ribbed
water or other jacket in combination with a fan:
Figure 2 is an elevation of an explosion engine cylinder provided with a fan and
means for spraying or introducing water into the air current generator by the fan:
Figure 3 is a sectional elevation illustrating the combination with the fan of a
dynamo for igniting the explosive charge in the motor.

page_text: a is the cylinder of the explosion engine or motor and b, b are the longitudinal
ribs of suitable material such as copper with which the said cylinder is provided
externally. c is an outer sheet-metal jacket or casing enclosing the cylinder a, the
said jacket or casing having for its object to direct the cooling current of air as
hereinafter described.
d is the fan, the said fan being mounted upon a spindle e, arranged at the outer
end of the cylinder a, and being rotated from the crank-shaft of the engine by means
of a belt or cord f which passes over a pulley g upon the spindle e and a pulley upon
the crank-shaft. h is one of a pair of guide-pulleys for the belt f, the said pulleys
being carried in a bracket i (Figure 3) fixed to the jacket c.
Figure 1 shews the arrangement wherein the cylinder a is provided with a water
jacket a upon which the ribs b, b are fitted.
In the construction illustrated in Figure 2 the explosion engine is shewn pro-
vided with a water supply adapted to be sprayed upon the cylinder walls. In the
said figure I have shewn in full lines a supply pipe having a spraying device k for
spraying the water on to the cylinder and in dotted lines I have shewn the supply
pipe as provided with a nozzle k¹ for directing the water upon the vanes of the fan,
and thence by the action of the fan on to the cylinder in the form of spray, instead
of directly upon the walls of the cylinder. I is a cock for controlling the supply
of water, as it will be obvious that the cooler the air surrounding the cylinder the
less the water that is required.
In Figure 3 I have shewn a motor having combined with the fan a dynamo for
upon the
igniting the explosive charge. The armature of the motor is mounted
fan spindle e so as to rotate with the fan between the field magnets m of the dynamo
which are fixed to the jacket c of the engine. The commutator brushes n, n are
carried in a frame o also connected to the cylinder jacket c.
As above mentioned it is to be understood that the armature of the dynamo can
be fixed and the field magnets rotatably mounted in connection with the fan.
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. In explosion engines or motors of the kind wherein a fan for directing a current
of air along the cylinder is employed, providing the cylinder with a water or other
jacket having external ribs of a good heat conducting material, substantially as
and for the purpose, hereinbefore described.
a
2. In explosion engines or motors of the kind wherein a fan for directing
current of air along the cylinder is used, the employment of means for spraying
water upon the vanes of the fan or into the air current generated by the fan, sub-
stantially as, and for the purpose, hereinbefore described.
3. In explosion engines or motors of the kind described in the preceding claiming
clauses the combination with the fan of a dynamo for igniting the explosive charge
of the motor, substantially as herein before described.
4. The improved explosion engines, herein before described and illustrated in
Figures 1, 2 and 3 respectively of the accompanying drawings.
1
Taka 1808
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.