US Patent: 1,734,181
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| Internal-Combustion Engine
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Patentee:
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| Charles W. Pendock (exact or similar names) - Milwaukee, Milwaukee County, WI |
| Assignees: |
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Le Roi Co. - West Allis, Milwaukee County, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 14, 1923 |
| Granted: |
Nov. 25, 1929 |
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Joel Havens
"Vintage Machinery" entry for Le Roi Co.
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Description: |
| Abstract:
This invention relates to improvements in internal combustion engines and, more particularly, to the power transmitting mechanism of such engines. It is well known that internal combustion engines do not run efficiently at low speeds and although it is possible, by proper design, to control within limits the speeds at which a given engine will operate efficiently, it is nevertheless a fact that for many purposes the range of speeds through which, such engines can be made to operate has been far too limited and it has been necessary to use reduction gearing. Internal combustion engines of relatively small size and low power may be used with great effectiveness for driving comparatively Heavy machinery at slow speeds. Concrete mixers and other like machinery driven at relatively slow speeds would impose heavy, if not impossible, burdens upon a small engine if the engine were coupled directly to the mixers. If, however, a 2:1 reduction gearing is employed to connect the gearing with the mixer, the motor is allowed to run at speeds enabling it to operate efficiently and the torque transmitted to the mixer is- double that which would be obtained if the engine were coupled directly thereto. The above statement is intended merely to be general and has obviously left out of consideration such minor losses as friction losses in the reduction gearing. It frequently happens that a manufacturer of internal combustion engines supplies such engines to various manufacturers of special machinery. In many instances, the work for which the engine is desired is such that it may be 'directly coupled to the machinery which it is to drive. In other instances, such as that above mentioned, it is desirable to couple the driven machinery to the engine through reduction gearing. In these latter instances, probably the most usual ratio in the reduction ,gearing is the ratio of 2:1. At any rate, it will be evident that an engine designed to render its power available either in direct ratio or in the ratio of 2:1 will have a far wider variety of uses than would an engine without this feature.
Claim:
An internal combustion engine including a crank shaft, a crank case provided with journals for the crank shaft, a cam shaft having a portion adequate for the transmission of full engine power, a housing enclosing said cam shaft portion and provided with adequate bearings therefor, said housing being in communication with the interior of said crank case, an oil collecting channel above one of said bearings and provided with a passage leading thereto, intermeshing gearing upon the crank shaft and the cam shaft within said housing, and means for maintaining a constant level of oil in said housing, tie level being such that one of said gears will dip therein whereby said gearing and said bearing are lubricated. |
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