Improvements in Water-cooling Apparatus.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Water-cooling Apparatus.
I, GOTTLIEB DAIMLER, of Cannstatt, in the Kingdom of Wurttemberg, German
Empire, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to an improved device, for use more especially in con-
nection with explosion-motors, though it is not limited solely to such use, the
said invention having for its object to withdraw or reabsorb the heat which
the cooling-water has taken up whilst circulating around the cylinder of the
motor.
It will be recognised, as absolutely necessary, not only when employing explosion
motors in general, but particularly when such motors are employed for motor-cars
of all kinds, to provide means, whereby the water circulating around the cylinder
shall not simply be slightly cooled, but rather must such cooling be of a very
thorough and efficient character, for the apparent reason, that only a small quantity
of water can be carried, and furthermore, because the space at disposal upon a motor-
car for the cooling of the cooling-water is usually exceedingly limited.
All the above mentioned difficulties have been removed by my improved
apparatus hereinafter more fully described, and the cooling-water is efficiently
cooled in a manner hitherto not attained.
In view of the aforementioned limited space at disposal for mounting a cooling-
apparatus in connection with motor-cars or the like, I employ in the example
(shown in the accompanying drawing) of the water-cooling apparatus forming the
subject of this invention, a flat cooling vessel, and within such cooling vessel I
arrange a large number of tubes, these tubes penetrating the said cooling-vessel
in a cross-direction.
As regards the regulated course of the cooling-water I remark, that the same
may be kept in circulation by a small pump or the like attached to the motor,
the said cooling-water upon passing out of the water jacket of the cylinder being
conducted direct to the cooling-apparatus, or more precisely, to the cooling-
vessel.
Here the water does not however, pass through the before mentioned tubes in
the cooling-vessel but is caused to pass around the tubes, and as the number of
such tubes is large, it will be clear that the cooling-water vessel can only receive
a small quantity of water, the said water by the continued contact with the cool
pipes thus becoming very soon considerably reduced in temperature.
To cool the tubes, or more precisely, to maintain the air within the tubes
continually at a low temperature I employ a fan or the like mounted upon the
shaft of the motor, by means of which fan, as is apparent, a constant and powerful
air-suction takes place through the tubes.
I may mention, that I make the cooling-water-vessel of flat shape (in comparison
with say a round vessel) so that it may prevent by its smaller flat surface the air
within the cooling tubes becoming unnecessarily warmed by the cooling water.

page_text: In order to make my invention more clear, I refer to the accompanying drawing,
in which similar letters denote similar parts throughout the several views, and
in which:
Figures 1 & 2 show a general view of an improved cooling-water-apparatus,
constructed according to my invention, whilst
Figure 3 shows the apparatus as employed for an explosion motor.
Proceeding to describe the drawing I remark, that the flat or approximately
flat vessel a is provided with as large a number of tubes as possible, said tubes
passing through the vessel a.
At the one side of this cooling vessel the tubes 6 terminate (as shown in
Figure 1) in a closed chamber c and in front of said chamber c a fan d is arranged
upon the shaft of the motor, the revolution of the fan causing, as is apparent, a
strong current of air to be drawn by suction through the tubes 6 with great
velocity.
The cooling water which has become heated by its circulation around the
cylinder, enters the cooling water vessel a through the tube, e,. passes or flows
around the tubes b, as hereinbefore indicated, until the said water reaches the
bottom of the vessel a from which the same passes away through the tube f back
again to the jacket of the cylinder in a sufficiently cool condition to be again
employed for cooling the cylinder.
This circulation of the cylinder-cooling-water through the said cooling apparatus,
and the re-employment of the same water for cooling the cylinder can with my
improved apparatus be repeated many times with entire success.
Furthermore, by my improved construction which retains the water in an
enclosed space,
I reduce to a minimum the loss of water by evaporation, which loss,
as is clear, must inevitably be much greater when the water is exposed to the
evaporating influences of the atmosphere.
This circulation of the water with only a minimum of loss is, as is clear, a
matter of the greatest importance as regards its bearing upon motor-carriages.
Figure 3 shows a general view of my improved cooling water-apparatus con-
nected to the motor. This may be effected in such manner, that the fan d is
directly mounted upon the shaft of the motor. The details of the construction
will be clear from the drawing, and therefore I abstain from any further
description.
In conclusion, instead of the fan, as herein before mentioned, I may employ more
especially for motor-carriages any other suitable device for catching a strong
current of air, and conduct these powerful air-currents through the tubes 6, whereby
an efficient cooling of the circulating water of the cylinder can be also obtained.
Furthermore Figure 3 shows at h a small pump for the purpose of maintaining
the constant circulation of the cooling-water from the water-jacket of the cylinder
through the cooling-water apparatus and again to the water-jacket of the cylinder
as hereinbefore described.
16
1000
I, GOTTLIEB DAIMLER, of Cannstatt, in the Kingdom of Wurttemberg, German
Empire, Engineer, do hereby declare the nature of this invention, and in what

page_text: manner the same is to be performed, to be particularly described and ascertained in
and by the following statement:-
This invention relates to an improved device, for use more especially in con-
nection with explosion-motors, though it is not limited solely to such use, the
said invention having for its object to withdraw or reabsorb the heat which
the cooling-water has taken up whilst circulating around the cylinder of the
motor.
It will be recognised, as absolutely necessary, not only when employing explosion
motors in general, but particularly when such motors are employed for motor-cars
of all kinds, to provide means, whereby the water circulating around the cylinder
shall not simply be slightly cooled, but rather must such cooling be of a very
thorough and efficient character, for the apparent reason, that only a small quantity
of water can be carried, and furthermore, because the space at disposal upon a motor-
car for the cooling of the cooling-water is usually exceedingly limited.
All the above mentioned difficulties have been removed by my improved
apparatus hereinafter more fully described, and the cooling-water is efficiently
cooled in a manner hitherto not attained.
In view of the aforementioned limited space at disposal for mounting a cooling-
apparatus in connection with motor-cars or the like, I employ in the example
(shown in the drawings sent in with the Provisional Specification) of the water-
cooling apparatus forming the subject of this invention, a flat cooling vessel, and
within such cooling vessel I arrange a large number of tubes, these tubes
penetrating the said cooling-vessel in a cross-direction.
As regards the regulated course of the cooling-water I remark, that the same
may be kept in circulation by a small pump or the like attached to the motor,
the said cooling-water upon passing out of the water jacket of the cylinder being
conducted direct to the cooling-apparatus, or more precisely, to the cooling-
vessel.
Here the water does not however, pass through the before mentioned tubes in
the cooling-vessel but is caused to pass around the tubes, and as the number of
such tubes is large, it will be clear that the cooling-water vessel can only receive
a small quantity of water, the said water by the continued contact with the cool
pipes thus becoming very soon considerably reduced in temperature.
To cool the tubes, or more precisely, to maintain the air within the tubes
continually at a low temperature I employ a fan or the like mounted upon the
shaft of the motor, by means of which fan, as is apparent, a constant and powerful
air-suction takes place through the tubes.
I may mention, that I make the cooling-water-vessel of flat shape (in comparison
with say a round vessel) so that it may prevent by its smaller flat surface the air
within the cooling tubes becoming unnecessarily warmed by the cooling water.
In order to make my invention more clear, I refer to the drawings sent in
with Provisional Specification, in which similar letters denote similar parts
throughout the several views, and in which:
Figures 1 & 2 show a general view of an improved cooling-water apparatus,'
constructed according to my invention, whilst
Figure 3 shows the apparatus as employed for an explosion motor.
Proceeding to describe the drawing remark, that the flat or approximately
flat vessel a is provided with as large a number of tubes 6 as possible, said tubes
passing through the vessel a.
At the one side of this cooling vessel the tubes 6 terminate (as shown in
Figure 1) in a closed chamber c and in front of said chamber c a fan d is arranged
upon the shaft of the motor, the revolution of the fan causing, as is apparent, a
strong current of air to be drawn by suction through the tubes 6 with great
velocity.
The cooling water which has become heated by its circulation around the
cylinder, enters the cooling water vessel a through the tube e, passes or flows
around the tubes b, as hereinbefore indicated, until the said water reaches the

page_text: bottom of the vessel a from which the same passes away through the tube f back
again to the jacket of the cylinder in a sufficiently cool condition to be again
employed for cooling the cylinder.
This circulation of the cylinder-cooling water through the said cooling apparatus,
and the re-employment of the same water for cooling the cylinder can with my
improved apparatus be repeated many times with entire success.
Furthermore, by my improved construction which retains the water in an
enclosed space, I reduce to a minimum the loss of water by evaporation, which loss,
as is clear, must inevitably be much greater when the water is exposed to the
evaporating influences of the atmosphere.
This circulation of the water with only a minimum of loss is, as is clear, a
matter of the greatest importance as regards its bearing upon motor-carriages.
Figure 3 shows a general view of my improved cooling water-apparatus con-
nected to the motor. This may be effected in such manner, that the fan d is
directly mounted upon the shaft g of the motor. The details of the construction
will be clear from the drawing, and therefore I abstain from any further
description.
In conclusion, instead of the fan, as hereinbefore mentioned, I may employ more
especially for motor-carriages any other suitable device for catching a strong
current of air, and conduct these powerful air-currents through the tubes b, whereby
an efficient cooling of the circulating water of the cylinder can be also obtained.
Furthermore Figure 3 shows at h a small pump for the purpose of maintaining
the constant circulation of the cooling-water from the water-jacket of the cylinder
through the cooling-water apparatus and again to the water-jacket of the cylinder
as hereinbefore described.
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 an apparatus for cooling-water, the combination of a vessel adapted to
receive the water, with tubes passing through said vessel and being opened at both
ends and with means for effecting a strong draft through said tubes, for the purpose
as described.
2. In an apparatus for cooling water, the combination of a vessel adapted to
receive the water, with tubes passing through said vessel and being opened at
both ends, with a fan arranged so as to suck air through said pipes, and means for
operating said fan, for the purpose as described.
3. In an apparatus for cooling water, the combination of an upright flat vessel
adapted to receive the water, with a large number of horizontal tubes passing
through said vessel, and communicating at both ends with the open air, and with
means for sucking the air through said tubes, for the purpose as described.
4. In an explosion motor, the combination with the water jacket of the cylinder
of the same, of a vessel adapted to hold the cooling-water for said jacket, tubes
connecting said vessel with said jacket, other tubes passing through the said vessel
and being open at both ends, a fan arranged so as to suck air through said tubes,
and means for connecting the fan to the motor, for the purpose as described.
Dated this 1st day of February 1899.
GEO. THOS. HYDE,
1, Broad Street Buildings, Liverpool Street, London, E.C.,
Agent for the Applicant.