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Патент USA US2133458

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Oct. 1s', v1938.
COOLING SYSTEM FOR SIDEBOARD` MOTORS
original Filed Nov. 2, 195s
3 Sheets-Shed 1
oct. 1s, 193s.
A. LESAGE
' 2,133,458
cooLING_sYSTEM FOR sIDEBoARD‘MoToRs
Original `F‘iled'Nov. 2, 1935
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3 Sheets-Sheet 2
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Inventor
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Oct. 18, 1938.
A. LESAGE
2,133,458
COOLING SYSTEM Fon sIDEßoARn MoToRs,
Original Filed Nov. 2, 1935>’4
3 Sheets-Sheet 3‘
Inventor
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2,133,458
Patented Oct. 18, 1938
" UNITED STATES
vPATENTl OFFICE
' 2,133,458
COOLING SYSTEM FOR SIDEBOARD MOTORS
Alfred Lesage, Schweinfurt, Germany
l
Original application November 2, 1933, Serial No.A
696,303. Divided and this `application Decem
ber 29, 1936, Serial N_o. 118,167. In Germany
November 5, 1932
4 Claims. (ci. 11s-_17)
This application is a division of my copending
to the crank shaft of the engine and parallel to
application Serial No. 696,303, filed November 2, i the axis of the engine cylinder i, the drive being
1933, now Patent No. 2,070,364.
The invention relates to a cooling system for
outboard'engines, and" more particularly side
board engines, and the special arrangement of
the feeding and discharge conduits both extend
ing with their free ends into the water.
a worm or helical gear I5 the reduction ratio of
which is preferably one half.
'I'he water cooling system of the motor cylin- -
through by the combined effect of the admission
der is composed of a `trunk I8 pivotally articu
lated to the bottom part of the unit through a
swing valve or hollow pivot I9, channels 26 lead
ing to the water jacket 21 of themotor cylinder 10
l, and other channels ‘28 interconnecting the
pressure due to the travel of the vessel and the
suction generated in the discharge branch due
peller shaft 8, the discharge being made through
The object of the invention is to so devise the
10 cooling circuit that the water is driven there
to centrifugal force.
15
transmitted thereto through the intermediary of
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This object is4 attained by the provision of a
feeding pipe extending substantially vertically
from the motor down into-the water and dis
charge channels formed in the hollow propeller »
said jacket to the inner end of the hollow pro
said shaft and holes I6 of the vanes of the
propeller I1.
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15
The operation of the water cooling conduit is
as follows.
~
When the nozzle I8 is swung down as shown in _
shaft and the propeller vanes. This arrange
20 ment will constitute a circuit of the least length
Fig. 1 in full lines its water admission opening
I8a is placed in the direction of travel of the 20
boat so that the pressure generated therein by
means being required for impelling the water
through the cooling jacket of the motor.
Another object of the invention is to reduce
the reactionof the water will rise a Water stream
to the valve I8 and further through the channel
26 into the jacket 21. - A boss ’I8b of the nozzle
striking an abutment 18a of the crank case 5 will 25
and high cooling effect, no separate driving
as
weight and dimension of the unit and to render
the motor compact by articulating a projecting secure the nozzle I8 .in its right working position
>feeding pipe of the cooling system upon the , against the reaction of the water. T_he .cooling
motor thereby facilitating the evacuation and the water having passed the jacket 21 is discharged
through the channel 28', the bore of theV propeller 30
transport of the motor.
_
In the annexed drawings, which form a part of shaft 8 and the discharge holes in the vanes of
30
this specification, by way of example a sideboard the propeller I1, a suction eiïect due to centrifu
motor in connection with the cooling appliance gal force assisting the circulation in the conduit.
Before dismounting the unit from the boat, the
according to the invention is represented.
Fig. l is a longitudinal sectional elevation of nozzle can be swung upwards lengthwise the unit 35
35 the outboard motor and cooling circuit on the
- broken line I--I of Fig. 2;
Fig. 2 is a plane view, partly in section, on the
line II-lI of Fig. l;
Fig. 3 isan end view of the outboard-motor
40
unit.
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as shown in Fig. 1 by .dotted lines and in Fig. 2
by full lines. Then air can enter the nozzle
through the mouth- 18a, permitting the evacua
tion of the entire system from water which flows
out through the propeller shaft-and propeller. 40
The unit thus made lighter and compacter can
Like >numerals denote like parts throughout all
now be handled more easily.
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figures of the drawings.
I claim:
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The sideboard motor comprises the engine cyl
1. 1n> combination with an outboard motor unit,
inder 4, _the crank case 5, a ñywheel-magneto de
. including an internal combustion engine, a. cool 45
45 vice 6, a starting appliance 1 attached to the
flywheel, the propeller shaft 8, a fuel tank 8 ing jacket for said engine,"a- hollow propeller shaft
placed above the engine cylinder 4, a muiiler 25 communicating with said jacket, and a propeller
arranged -by the side of, and‘directly connected having cooling water discharge apertures com
to, the motor, and a carbureter III, all these items municating with the interior of said shaft, a 50
being combined to form a.- unit. From the water admission pipe communicating with said
jacket whereby cooling water will circulate suc
,crank case 5 laterally projects a sleeve II de
signed to interconnect the said unit with a tubu- , cessively through said pipe, said jacket and said
i `lar carrier I2 projecting from the side board of a shaft, and out through said apertures, said pipe
being pivotally connected to said- unit so that
boat.
when swung vertically downward said circulation 55
55
The propeller shaft 8 is arranged transversely
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2,133,458
starts and whenswung above the water level
automatic discharge of the circuit takes place.
2._ The combination with an outboard unit, of
on internal combustion engine, a cooling jacket
of said engine, and a circuit interconnected with
said jacket, including an admission branch and
a discharge branch, said admission branch in
cluding atubular nozzle with its mouth facing in
the direction of travel and a pivotal connection
10 permitting adjusting said nozzle to a lower oper
of the motorl boat, in water receiving position,
and a hollow adjustable pivot device located at _
the upper end of said pipe, providing communi
cation between said pipe and said cooling jacket
and permitting adjustment of thepipe from oper
ative vertical to inoperative horizontal position.
_ 4. The combination with an outboard motor
unit, of an internal combustion engine, a cool
ing jacket of said engine, and a circuit ínter
connected with said jacket, including an ad
ative circulation position or to an upper inoper
mission branch and a discharge branch, said ad
ative and totally discharging position, and said
mission branch including a tubular nozzle with
discharge branch including a hollow propeller
shaft and propeller vanes, the latter having dis
15 charge apertures radially spaced from the pro
peller axis.
its mouth facing in the direction of travel of the
motor, in water receiving position, and a pivotal
3. In combination with an outboard motor unit,
including an internal combustion engine, a cool
ing jacket for said engine, a hollow propeller
20 shaft _communicating with said jacket, a propeller
nozzle to a lower operative circulation position
or to an upper inoperative and totally discharg-v
,having cooling water discharge apertures com
municating with the interior of said shaft, a
Water admission pipe having its lower'water ad
g mission aperture facing in the direction of travel
10
connection in the shape of an adjustable cock
like articulation permitting " adjustment of said
ing position, and said discharge branch includ
ing a hollow propeller shaft and propeller varies, 20
the latter having discharge apertures radially
spaced from the propeller axis.
ALFRED LESAGE.
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