US1111765A - Internal-combustion engine. - Google Patents

Description

J. N. ROSE, JR- INTERNAL COMBUSTION ENGINE.

APPLIOLTIOI IILBD NOV. 19, 1913.

PatentediSept. 29, 1914.-

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J. N/ROSE, 1R INTERNAL COMBUSTION ENGINE. APPLICATION FILED NOV. 19. 1913- l Patentedsept. 29, 1914.

' To all whom it may concern:

f UNITED, STATES PATENT omen JOHN n. ROSE, JR, or xmsrnv, KANSAS.

INTERNAL-COMBUSTION ENGINE.

, Be it known that I, JOHN N. ROSIE, J12, a

citizen of'the United States, residing at Kinsley,'in the county of Edward and State of Kansas, have invented certain new and useful Improvements in Internal-Combus tion Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invent.on relates to internal combustion engines of the four cycle type, and one of the principal objects ofthe invention is to simplify and render more eificient the valve mechanism of engines of the type referred to and to provide an intake and an exhaust valve of the piston type, to be operated by cams on a single shaft.

Another object of the invention is to provide means for constantly feeding oil to the lower portions of the valve casing so that as the piston valve'descends a small quantity of oil is taken up andapplied to the inner wall of the valve casing While an overflow pipe leads from the bottom of the valve casing to the crank chamber, said overflow pipe also serving to relieve the valve chambers of anyexcess of air or compression caused by the opening and closing of the valve.

Still another object of the invention is to provide an internal combustion engine, in which the intake and exhaust valves are not exposed to the action of the'gases excepting at the surface of the head of the piston where no harm can be done to the operation of the valve.

In engines of the type referred to, the valve mechanism is usually asouree of more trouble than any other .portion'of the engine, owing to/the 'fact that the valves are usually exposed in great part to the action of the gases aid this leads to many irregularities in the operation of the valve, which means constant attention.

t is one of the principal objects of this invention to overcome the defects and irregu' l arities referredto by means of 'valves of the piston type, which are not exposed to the di- I'BCtfiICllOli of the gases, excepting the surface of the head of the valve.

These and other objects may be attained by means of the construction illustrated in my invention, the lower portion of the crank chamber and oil receptacle, being broken.

casings, and. the oil receptacle, and Fig.3

1s a detail sectional view showing the means for operating the oil pump rod, said view being taken on the line 3-3 of Fig. 2, looking in the direction indicated by the arrows.

Referring to the drawings the numeral 1 mg, and 3 is the bottom of said casing. The

cylinder 1- is provided with a water jacket of the cylinder 1 at the top, as ndicated portion 7, on the crank shaft 8,-

Specification. of Letters Patent. P t t d S t, 29, 1914, Application filed November 19, 1913. Serial No. 801,923. p

designates the cylinder, 2 is the crank cas- An inlet pipe 11, from a source ofjfuel supply, leads into the valve casing 9, while an exhaust p pe 12 also communicates with the valve casing 9 in alinement with the exhaust valve, While the inlet pipe 11 communicates with the valve casing in line with the intake valve.

Since the intake valve and the exhaust valve are identical in construction, and are operated by thesame character of mechanism, a description of one of these valves will serve for both.

The intake valve comprises a piston head 13, having the usual expansion rings, and

a valve stem 14 preferably formed integral with the head 13. The valve stem 14 extending-through a guide element 15seccured to the top of the crank chamber 2,

said valve stem also extending through the top of said casing and being provided on its lower end with an anti-frictionroller 16, is adapted to bear upon acam l7 mounted on a cam shaft 18', which may be operated or actuated by means of a gear wheel 19 on said shaft which. meshes with a smaller gear 20 on the crank shaft 8., A spiral I spring 21 encircles the valve stem '13, "the" upper end of said spring'bearing against a boss at the lower end of the valve casing 9, While the lower end of said spring bears against an adjusting collar 22,provided with.

a set screw 23 for regulating the tension of p the spring 21.

The valve'casing 9 is provided atits upper end with .a removable plug 24, through which the spark plug 25 extends, while the exhaust valve casing is provided with a similar plug 26.

. An oil supply pipe 27 communicates with the lower 'end of the valve casing 9, as at 528,

said pipe extending down to an oil pump which carries a worm 31 operated by a worm gear 32 on the cam shaft 18, said pump rod extending through a guide bracket 33. The oil pump furnishes a'supply of oil 34: in each of the valve casings 9, at a sufficient height so that the valve head 13 dips into it at eachdownward stroke. An overflow oil pipe 3.3 'pommunicates with the oil pump in .the valve basing 9 at a point which determines the oil line in said pump, ,the overflow pipe discharging at its lower end 34 within the crank casing 2, and providing a quantity of oil 35 in the rounded bottom 36 ofthe crank casing. The' overflow pipe 33 also serves to relieve the valve casing 9 of undue compression, or vacuum. An oil reservoir 37 is located underneath 1 the crank chamber and a pipe 38 leads from l0 disposed at the oil line within the crank chamber 3, is bent down and communicates with the oil reservoir 37, so that an intake of oil is fed back to the reservoir 37 As shown in Fig. 1 the overflow pipe 33 is provided with a branch pipe, one end of which communicates with the inlet .valve and the other end with the exhaust valve.

The exhaust valve stem 14: is provided with a guide element 15 and an adjusting ring 22, and a spring 21*, which are substantially identical with the parts already described in relation to thefiinlet valve, and this exhaust valve is operated by a cam similar to the one already described and properly positioned upon the shaft. 18.

The f operation of the engine may be briefly-described as follows :\Vhen the-piston head 5 is at the limit of its upward stroke, the intake valve moves down past 7 the inlet pipe, and as the piston moves down it draws in a charge of gas. Asthe piston starts upward the intake valve closes and the exhaust valve being also closed, the

- the intake and exhaust valves of the piston type, provided With expansion rings and operatingin casings having oil pockets be- :low they are practically proof against leakagefand are reliable and noiseless.

What is claimed is:-' a 1. In an engine the combination of a cylinder, a piston therein, a valve casing communicating, with said cylinder, piston valves mounted in said casing, one of said valves controlling the intake and the other controlling the exhaust, an oil pump, a pipe leading from'said pump to said valve casingf'an overflow oil pipe communicating with said casing, andhaving its discharge end disposed Within the crank casing, and means for operating said valve.

.2. In an engine and in combination with the cylinder, pistons, and means to operate the same, of a valve casing, said valve cas- 'ing communicating with said cylinder, a piston valve mounted in said casing and adapted to control the intake of fuel, said valve comprising a piston. head, a rigid stem, a roller mounted on'the end of said stern, cams for operating said valve, an oil pocket in the casing, an oil pump for feeding oil to the pocket, an overflow pipe com-' municating with said pocket, said overflow pipe having its discharge endlocated in the crank casing.

' 3.1m an engine the combination of a.

cylinder, a piston mounted therein, a valve casing communicating with said cylinder, an inlet valve and an exhaust valve mounted in said casing, an oil pocket for each valve in said casing, an ,oil pump, a pipe leading from the oil pump to each of said oil pockets, an oil reservoir, an overflow pipe communicating with each of said pockets and discharging into the crank casing of the engine, a return pipe leading from the crank casing to said oil reservoir, and means for operating said valve. I

in testimony whereof I allix my'signature in presenceof two Witnesses.

JOHN N. ROSE, JR.

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