US 1420411 A
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ENGINE VENTILATOR. I APPLICATION FILED MAY 12. 1920.
Paten td Jun e120, 1922.
Fi -4 i s ATTDENEIYT UNITED STIAT EMERSON GURRIE,
ONE-HALF r0 BOTH or LOS ENGINE vEn'rILAroB.
Application filed May 12,
To all whom it may concern:
Be it known that I, EMERSON CURRIE, a citizen of the United States, residing at the city of Los Angeles, county of Los Angeles, State of California, have invented new and useful Improvements in Engine Ventilators, of which the following is a specification.
My invention relates to means for ventilatmg the crank case of an internal combustion engine and the object thereof is to I admit air into the crank case and to permit the escape from the crank case of the heated gases thereby cooling the cylinders.
In the drawings forming a part of this application Figure 1 is a front elevation of my device as applied to an internal combustion engine, a portion of which is shown, the engine being that of a Ford car. Figure 2 is a longitudinal central section of my device, with portions of the engine in section and other portions in elevation. Figures 3, 4 and 5 are views of the several pieces of the device detached.
Referring to the drawings, 10 is the casing which covers the transmission gears of the engine from which the usual door is removed and in its place I attach the base plate 11 of my ventilator by means of screws 12 which are usually used to secure the door of the case in place. Near the lower end of plate 11 I slit the plate by a transverse cut and press the upper edge of the late at the slit outwardly as best shown in igure 2 thereby forming base plate slot 12. On the outer side of plate 11 and secured thereto by rivets 13 is the cover 14 which is of metal, the central portions of which are pressed outwardly to. form between it and the base plate a condensing chamber 15 in which the oil vapors may be condensed and then run back into the crank case through slot 12. To retard the flow of the vapor and to aid in condensing it I secure to cover a sheet of wire gauze 16 Specification of Letters Patent.
Patented June 20, 1922.
1920. Serial No. 380,876.
which lies over slot 12. The upper end of the gauze preferably engages the base plate above the slot. I could omit the gauze but it works better with it in. In the upper end of cover 14: is a transverse slit, the lower edge of which is pressed inwardly therebyv forming the cover slot 17. By this construction it will be seen that I have provided an eflicient means of ventilating the transmission case, which will permit the heated air to pass out of and the crankcase. It will also be seen that the passage way is provided with deflectors that will throw down any particles of liquid oil that might have a tendency to splash out, and that the vaporized oil has a chance to condense and run back into the crank case.
Having described my invention I claim:
1. A ventilator for internal combustion engines comprising a base plate adapted to be secured upon the transmission casing, said plate having lower end thereof, the metal forming the upper edge of the slit being pressed outwardly to form a slot; a cover plate having the central portions pressed outwardly secured to said base plate to cover said slot said cover plate bein slitted transversely near the upper end, the metal forming the lower edge of the slit being pressed in wardly to form a slot.
2. In an internal combustion engine a ventilator for the transmission case comprising a casing composed 'of a baseplate and a cover plate secured upon the transmission case, said casing having a slot in the base plate near the bottom and another slot in the cover plate near the top; and wire gauze covering the slot in the base plate.
In witness that I claim the foregoing I have hereunto subscribed my name this 7th day of May, 1920.
cool air to pass into a transverse slit near the