US1068056A - Combined air and oil valve for internal-combustion engines. - Google Patents

Description

C. W. JACKSON. COMBINED AIR AND OIL VALVE PoR INTERNAL coMBUsTIoN ENGINES. APPLICATION FILED IBB.27, 1913-b 1,068,056. Patented July 22, 1913.

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@wi/[Maanen C. W. JACKSON. GOMBINBD AIR AND 0IL VALVE FOR INTERNAL coMBUsTIoN ENGINES.

APPLIoATIoN FILED Imm?, 1913.

Patented Jul)T 22, 1913.

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COLUMNA ILANOGRAPM C0., WASHINGTON, D. c.

UNITED STATES PATENT OFFICE.

CLARENCE WI-IITTINGTON JACKSON, OF DUNKIRK, MONTANA, ASSIGNOR OF ONE HALF T0 NELS l. HANSON, 0E DUNKIRK, MONTANA.

wCOMBINED AIR AND OIL VALVE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented July 22, 1913.

Application filed February 27, 1913. Serial No. 751,034.

To all whom t may concern:

Be it known that I, CLARENCE WV. JACK- soN, a citizen of the United States, residing at Dunkirk, State of Montana, have invented certain new and useful Improvements in Combined Air and Cil Valves for Internal- Combustion Engines, of which the following is a specilication.

This invention relates to a combined air and oil valve for internal combustion engines.

In internal combustion engines having crank case lubrication, particularly those of the four-cycle type, the oil in the crank case is thrown about and tends to escape in the form of an oil-mist, there being air pressure in the crank ease on account of the operation of the engine. To relieve this air pressure means should be provided for its escape from the crank case, but with the air there also escapes the lubricating oil.

The present invention has for its object the provision of a. combined air and oil valve which can be applied to the crank case of either a two or four-cycle internal combustion engine, whether of the horizontal or vertical type, whereby the air pressure in the crank case will be relieved, air supplied to the crank case, and the lubricating, more or less atoniized oil, escaping with the coinpressed air, will be automatically returned to the crank case on a succeeding suction or intake of air, thereby affording means for saving the oil and using it over and over again wit-hout danger of its discharge from the engine and at the same time affording means for the intake and exhaust or relief of air.

The embodiment of the invention set forth hereinafter and shown in the accompanying drawings is a preferred form, but is to be deemed as illustrative, rather than restrictive, of the scope of the invention.

In the accompanying drawings: Figure l is a longitudinal section through a horizontal internal combustion engine, with my invention applied thereto, which is shown in section; Fig. 2, a view showing the invention applied to a vertical engine; Fig. 3, an enlarged detail longitudinal section of the invention; Fig. Ll, a plan view thereof; Fig. 5, a horizontal section; and Fig. 6, a detail of the spring-actuated valve.

In Fig. l there is shown a horizontal engine and in Fie'. 2, a vertical engine. Each engine shown has a crank case 1 crank 2, piston and cylinder Ll, the lubricating oil in the crank case appearing at 5.

In those types of horizontal engines which have a flat top, the invention may be applied to such flat top as shown in Fig. l, but if the engine has no such top, the invention may take the form shown in .lli-g. 2, which adapts it for application to any horizontal or vertical engine. In that form, in addition to the valve construction and case hereinafter described, there is a pipe section G adapted to be attached to lthe crank case and leading to a boar or chest 7 to which the base S of the valve is connected in any suitable manner by fastenings 9.

lWhere the engine has a, flat top to its crank case, as shown in Fig. l, atV l0, the base 8 is directly fastened thereto by fastenings or bolts 1l. Preferably, cast or formed integral with the base, is a casing 12 which has a central partition 13 dividing` it into chambers or compartments lll and l5. The top of the casing is curved at 1G and extends down at 17 in rentrant manner into the casing to a point below the `upper end of the partition 13, the latter having a flange 18. The remaining Awall 19 of the casing l2 is open to the atmosphere at 2O and is preferably fornied on a compound curve so as to more readily admit the air to be drawn into the crank case and to void the air therefrom.

The base 8 is provided with valve seats 2l and 22 and there are provided an air and oil outlet valve 23 and an air and oil inlet valve 2l. The valves are of substantially the same form, but open in opposite directions, the valve Q3 opening outwardly and the valve 2l opening inwardly in relation to the crank shaft. Valve 23 may be spring close-d, but is preferably simply pivoted at 25 and closes by gravity, being prevented from assuming an exact vertical position by stops QG. Valve 2a is preferably spring closed, a convenient adjustable spring means for this purpose being shown at 27, the tension of the spring being regulated by the pivot 28 and the set screw Q9.

The present invention admits and voids air to and from the crank case as the piston moves forward and returns without any resultant loss of the lubricant 5. lllhen the piston goes forward, the oil is forced past the valve 23 and when the piston returns,

the valve 28 closes and air is sucked down through 2O and 19 and past valve :24C into the cra-nk case, drawing with it th'ge oil which has previously1 been forced past valve Q3. The curved form of the casing or shell top 16 causes the oil to be thrown down on thevalve 24; so that when that. valve is opened downwardly 0r inwardly by the suction of the piston 3, the air and the oil deposited on the valve pass into the crank case.

Having` thus described my inventioinwhat I claim as new and desire to secure by Let-l ters Patent, is:-

l. The combination with the crank case of an internal combustion engine, of a combined air and oil valve therefor adapted to relieve the air pressure in the crank case and to admit thereto the ydischarged lubricantand air.

2. The combination with a crank case of an ii'iternal combustion engine, of a shell or casing having communicating compartments and an air opening, an admission valve adaptedl to admit air and Vlubricant from one compartment of the casing to the crank case, and an outlet valve adapted to admit air and lubricant discharged from the crank case, the compartments of the casing being arranged and adapted for the passage of the lubricant from one to the other so that itmay reenter the crank case without interfering with the escape of the air discharged from the crank case.

3. A combined air and oil valve embodying a casing having a partition subdividing said casing into communicating chambers or compartments, means for admittingair to one of said compartments, and admission and discharge valves for the respective compartments.

4. A combined air and oil valve embodying a casing having an a-ir admission mouth,

vsaid. casing having a wall renteringsaid mouth, a partition in the casing which terminates short of the rent-rant part aforesaid, thereby leaving an opening by which the compartments of the casing are placed 1n communication, a discharge valve for the.

compartment which is in communication withthe mouth aforesaid, and an admission valve for the other compartment.

In testimony whereof, I hereunto aiiiX my signature in presence of two witnesses.

CLARENCE WHITTINGTON JACKSON. litnesses NnLs P. IIANsoN, HANS E. 'IIANSON Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patenti. Washington, ID. C.

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