US1369827A - Internal-combustion engine - Google Patents

Description

C. L. MAcVEY.

INTERNAL COMBUSTIO NNNNNN E. APPLICATION HLEDsriPTA 1111111 9.

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[im Arm/mers' yad vnarran stares onlinr-ns LLOYD MACVEY, orV snnnviiron'r, LOUISIANA.'

iNTnRivAL-coiviBUsrioN l ENGINE.

Specification of Letters atent. l

Patented-Mar. i1, 192i.

Application inea. septemberee, 1919. vserial Noleeea.

To aZZwzom t may concern."

Be it known that I, CHARLES L. MAGVEY, a citizen of the United States, residing at Shreveport, lin the parish of Caddo and State of Louisiana, have invented new and useful Improvements in Internal-Combustion Engines, of which the following is a specification. j

My invention relates-to improvements in internalV combustion engines of the rotary valve type. ,I Y

in important object of the invention is to provide a simplified construction of rotary valve by use of which the four functions of intake, compression, firing and exhaust, may be performed upon one complete revolution of the valve.

A further object of the invention is to provide an internal combustion engine of the above mentioned character having gravity operated means for lubricating the rotary valve, and for feeding' the used oil from the valve to the interior of the cylinder for lubricating the piston, the spent oil being subsequently exhausted from the cylinder.

A further object cf the invention is to provide means whereby the rotary valve may expand longitudinally and circumfer entially without binding action. A

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of lthis specification and in .which like numerals are employed to designatelike parts throughout the same,

Figure 1 is a plan View of an engine embodying my invention, with the cap of the valve housing removed and the rotary valve removed, V

F ig. 2 is a vertical longitudinal section taken on line 2 2 of Fig. 1,

Fig. 3 is a transverse sectional view taken on line 3-3 of Fig. 1, with the valve in place,

Fig. i is a front elevational view showing the valve timing,

F ig.- 5 is a plan view of the valve housing cap,

Fig. 6 is a perspective view of a rotary the cylinders to function in proper order.

valve.

In the drawings, wherein for the `purvpose of illustration is shown a preferred embodiment of my invention, the numeral 10 designates the cylinders 'of an internal combustion engine, whichjare shown as vertical for the purpose ofillustration. A piston. 11 is mounted-to reciprocate within each cylinder and is connected with a pitman 12,

connected with a crank shaft A18.

' There may be any suitable numberof cylinders, .and in the event that there are a plurality of them, thesame vmay be cast in a Single block, providing a headl. Spark plugs'l are carried ,bythehead and'project into the top of the cylindersV vA lvalve housing is secured'to the cylinders or cylinder block and is designated as a whole by the numeral 17 This housing embodies an inner section 18, preferably cast integral with the cylinder block, The

numeral 19 designates an outer section or cap, secured to the inner section 1S by bolts 20, carrying nuts 21, zwith spring washers 22 arranged beneath ,the nuts. frlh'e'fiiiiction of these spring washers is to permit of a slight outward movement ofthe section or cap 19 upon the circumferential eXpansion of the rotary valve, to be described.

The sections 18 vand 19 lare provided with recesses 28, which are semi-circular in cross section andare infregistratio'n to form a cylindrical chamber, having both ends open, andadapted for the reception of a rotary solid valve 24.-. This rotary solid valve,

which may betermed a rotary ,shaft valve, is provided nea-r one endwith an annular flange 25, rotatable within an annular groove 26, formedin the housing 'sections 18 and 19. The. function of this flange and groove is to hold the rotary shaft valve against bodily longitudinal displacement, but to permit of the longitudinal expansion of the same, without binding action, as the opposite end of the saine is free fromr connection. 27, preferably secured to its end, near the Harige 25, this gear being connected with the crank shaft of the engine to be driven at a suitable speed.

The rotary sha-ft valve 24 is provided with a plurality of twin units inlet and eX- haust ports 28 and 29, there beingv as many vunits as there are cylinders, and the units being Varranged in proper circumferential adjustment upon the shaft valve, to cause .up one fourth of the circumferential spacev The shaft valve is driven by a gearv of the shaft valve, the inlet port 28 taking up one fourth of the circumferential space, andthe exhaust port 29 taking up one fourth of the same. The inlet port starts at the end line of the exhaust port, thereby leavingytwo fourths of the circumferential space of the shaft valve solid, which solid space serves to close the passages to the cylinder, during the twostages of compression and explosion. It is thus seen that I have provided a twin unit inlet and exhaust ports arranged at 90,- and occupying two fourths of the circumferential area of the shaft valve, the remaining two fourths being solid, with the result that upon a coniplete rotation of the shaft valve the four functions of the engine, to wit, intake, compression,V firing, and exhaust will be performed.

Each cylinder 10 has a relatively wide common port 30, leading into the upper end thereof, and adapted to be placed alternately into communication with supply and exhaust ports or passages 31 and 32, formed in the housing section 18. The inlet port 28 is adapted to establish communication between the ports 30 and 31, while the exhaust port 29 may establish communication between ports 30 ,and 32. The charge is fed to the intake port 31 by any suitable means,

I provide gravity operated means to supply oil or other lubricant to the rotatable shaft valve, comprising a suitable number of spaced oil supply pipes 33, which extend. through vertical openings in the top of the section or cap 19, and deposit oil upon the periphery of the shaft valve. The construction of the shaft valve is such that it permanently retains the pressure within the cylinders from the flow of oil, Which enables the use of the Y gravity feed which effects a continuous flow of oil upon the top of the shaft valve. I omit any device to remove the spent oil from the shaft valve,vas tlieksharp edges of the lports 28y andL 29 will pick up the refuse oil so that-the same is next drawn into the cylinders, upon the intake strokes of the pistons, furnishing lubrication to the cylinder walls and pistons, and after the explosion in the cylinders, the burnt cil is exhausted into the atmosphere.

In View of the. foregoing description it is thought that the construction and operation, of 'my engine should be fully understood, it being understood that certain changes in v the shape, size, and arrangement of parts,

may be resorted to without departing from the spirit of my invention, or the scope of `the subjoined claim.

Having `thus described my invention, I claim Y In an internal Vcombustion engine of the ,character describe-2l, a plurality of cylinders,

pistons arranged therein, a housing secured tothe cylinders and having twin units of inlet 'and exhaust ports, said housing embodying a can and having an interior annular groove, yielding means to hold the cap in pl ace, a rotary shaft valve arranged with- Vshaft valve.

CHAS. LLOYD MACVEY.

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