US1299129A - Cooling internal-combustion engines. - Google Patents

Description

I COATALEN.

COOLING INTERNAL COMBUSTION ENGINES.

APPLICATION FILED MAY 23. 19:1.

1,299, 1 29. Patented Apr. 1,1919.

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Male" UNITED STATES PATENT OFFICE.

LOUIS GOATALEN, OF WOLVERHAMPTON, ENGLAND, ASSIGNOR OF ONE-HALF TO I SUNBEAM MOTOR CAR COMPANY LIMITED, OF WOLVERHAMPTON, ENGLAND.

Specification of Letters Patent.

Application filed May 23, 1917. Serial No. 170,540.

To all whom it may concern."

Be it known that I, LOUIS COATALEN, a subject of the King of England, residin in Wolverhampton, Stafford'shire, Englan have invented certain new and useful Improvements in Cooling Internal-Combustion Engines, of which the following is a specification.

This invention has for its object to improve the cooling of the interior of internal combustion engines, particularly such as are used on aeroplanes and the like. It has previously been proposed to pass air through the crank chamber, and it is the object of this invention to provide a system of this kind for engines having a cam shaft arranged above the cylinder.

According to this invention, air is admitted at the end of the crank chamber opposite to that at which the cam shaft drive I is arranged and the air passing along the crank chamber is then caused to travel up the cam shaft gear casing preferably after having passed through a centrifugal separator or filter. Thus the oil picked up by the air passing along the crank chamber is .not carried up the cam shaft gear casing. At the top of the casing there are provided one or more outlets, preferably with a cowl or ventilator projecting in the opposite direction to the air draft.

The accompanying drawing shows in side elevation more or less diagrammatically a four cylinder engine provided with a reducin ear throu h which the propeller is drlven and to w applied. I

The crank chamber is indicated at A and this contains a longitudinal crank shaft supich this invention has been ported in bearings in any suitable manner.

The cylinders are indicated at B and inside a casing C is a cam shaft the axis of which is indicated at D. This cam shaft is driven by gearing of any suitable kind located in the casing E and driven from the crank shaft, the axis of which is at F. The crank shaft also drives through a reducing gear on to the propeller shaft G the reducing gear being located in the housing H. This housing is provided with an air funnel J causing air to pass in the direction of the arrows downward into the crank case. Further, the

Patented Apr.1, 1919.

propeller shaft G may be hollow and air may enter this in the direction of the arrows and if desired the crank chamber may be provided with one or more air inlets K.

-The air entering in this manner travels along the crank chamber, up the casing E, and out through the outlet funnel L. At the bottom of the casing E may be a filter or filters of any suitable kind, or some known form of centrifugal separator may be used A to separate the particles of oil from the air.

Alternatively the filters or filtering devices What I to secure by Letters Patent is claim as my invention and desire 1. In an internal combustion engine for use in aerial machines, a crank casing having holes therein, a casing projecting upwardly from sa1d crank casing and containing the gear driving the overhead cam shaft and means for causing air to pass through the holes and out through the top of the upwardly projecting casing.

2. In an internal combustion engine for use in aerial machines, a crank shaft, propeller driven by the crank shaft, a casing for the crank shaft, an air funnel on the casing in proximity to the propeller, an overhead cam shaft, a casing projecting upwardly from the crank casing and containing the gear for driving the overhead cam shaft and at the opposite end of the crank casing to the propeller and a funnel on the gear casing, for the purpose described.

3. In an internal combustion engine for use in aerial machines, a crank shaft, 21. propeller driven by the crank shaft, a hollow propeller shaft, a casing for the crank shaft, an air funnel on the casing in proximity to the propeller, an overhead cam shaft, a casing projecting upwardly from the crank casing and containing the gear for driving the overhead cam shaft and at the opposite end of the crank casing to the propeller and a funnel on the gear casing, for the purpose described.

4. In an internal combustion engine for of the gear casing and a funnel on the gear use in aerial machines, a crank shaft, a procasing, for the purpose described. peller driven by the crank shaft, a casing for In testimony whereof I have signed my the crank shaft, an air funnel on the casing name to this specification in the presence of 5 in proximity to the propeller, an overhead two subscribing Witnesses.

cam shaft, a casing projecting npwardly from the crank casing and containing the LOUIS COATALEN' gear for driving the overhead cam shaft and Witnesses: at the opposite end of the crank casing to C. W. JONES,

10 the propeller, an oil separator at the bottom L. V. 002mm.

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