US1189187A - Combustion-engine. - Google Patents

Description

H. J. ALVIS.

COMBUSTION ENGINE.

APPLICATION HLED JAN-11,1913.

1,189,187. Pat ented June 27,1916.

2 SHEETSSHEET I.

7 0 v I a HARRY J. aLvIs. or EAST sr'. Louis, ILLINOIS.

COMBUSTION-ENGINE.

- Specificationof Letters Patent.

Patented June 27, 1916.

Application filed January 11, 1913. Serial No; 741,464.

To aZZ whom it may concern:

Be it known that I, HAizRv J. ALvI s, a

' citizen of the United States", .residin at East. St. Louis, in thegcounty of St. (/lair and State of Illinois, have invented a certain new and useful Improvement in -Oombust-ion-Engines, of which the following is a specification.

My invention relates to improvements in internal combustion engines and is .illustrated diagrammatically in one form in the accompanying drawlngs, wherein Figure l is a side elevation partly in section along line 11 of Figs. 2, 3 and 4; Fig. 2, a section along the line 22 of Figs. 1 and 3-; Fig.3 is an end elevation in part section; Fig. 4, a sectional view along the line 4-4 of Figs. 1 and 3; Fig. 5, a plan view of the sleeve valve; Fig. 6,'an elevati'on .partly in section along the line 66 of Fig. 5; Fig. 7 is a detail sectional view through one of the cylinders; Fig. 8 is a section along the line 88 of Figs. 2 and 4t.

Like parts are indicated by like letters throughout the several figures.

A is a cylinder wall, A the crank case, A a valve gear housing. This housin is in the present instance cast integral with the cylinder wall in part and in part with .the crank case but it is quite evident that it may be made separately if so desired andbolted or riveted in place as the case may be.

B is a crank shaft provided with connecting rods B and pistons B The carbureter G discharges into a Y-shaped manifold C which in turn communicates with intake headers or manifolds C G'.

C C are exhaust headers or manifolds which discharge through a'common exhaust pipe C I The cylinder A is of greater inside diameter' than the piston B and contains a sleeve S which functions as a sleeve valve and is provided about its lower edge with the spiral gear S in mesh with a worm S on the shaft S which shaft is driven from the crankshaft B by asilent chain S passing over the gear S on the shaft S and the gear S on the crank shaft B. The sleeve S projects upwardly above the upward limit of the piston travel and forms the wall of the combustion chamber since it terminates only at the top of the cylinder. The upper portion of this sleeve is provided with ports S 'S The passages P P P P lead from the combustion chamber through the cylinderwallto theintake manifolds C C respectively. The passages P P and P P are arranged diametrically opposed with reipeci to the cylinder. The passages P P lead from the exhaust manifolds C C re pectively to the combustion chamber and are also diametrically opposed'in pairs with respect to the cylinder.

It will be evident that while I have shown In my drawmgs an operative device, still many changes mlght be made both'in size,

shape and arrangement of parts without de-, parting materially from the spirit of my invention and I wishtherefore that my draw- Ings be regarded as 1n a sense diagrammatic.

The ,PF g Q Q have at their lower extremitles the exhaust ports Q? Q controlled by the sleeve S and adapted to be opened when the slots Q Q in the sleeve are in line with the ports. The passages Q communicate with the exhaust manifolds C C respectively.

-The use and operation of-my invention are as follows :Assuming the piston. as shown in the cylinder on the right hand side of Fig. 1 to be at the lower extremity of its travel, the. valve sleeve as it rotates in the direction indicated by the arrow will commence to open the exhaust ports and, as

the shaft continues its rotation, the ports will continue to open and the piston move upwardly in the cylinder expelling the burnt gases. As the piston approaches the endof its stroke the sleeve will-have rotated to such a point as to commence to close the exhaust ports and open the intake ports and as the piston commences its downward or suction stroke'it will draw a charge of combustible gas from the carbureter through the intake manifolds and intake ports into the cylinder the ports being meanwhile wide open. mences its upward or compression stroke the ports will be closed by the forward rotation of the sleeve and the piston will complete its upward movement for the compression stroke. The charge will be fired in any suitable and usual manner. -The piston will again continue on its working stroke returning to the relative position shown in Fig. 1 upon the right hand side with the exception that the sleeve will have made only a single one-half revolution and the port in the sleeve that was on the right hand side of the engine will now be found on the left side of the engine and viceversa.

However, as the piston again com-- It will be evident that a difierent number of ports might be used by varying the relative speed of the sleeve and the engine being ported, intake and exhaust passages Within the cylinder walls diametrically opposed and communicating respectively with the adjacent intake and exhaust pipes, the passage being controlled by the ported sleeve and being so arranged that as the ported sleeve rotates, it opens first the intake and then the exhaust passages, the ports in the cylinder being, adapted 'to operate first as intake and then as exhaust ports, and being arranged separate one from the other by substantially an angle of 180.

In testimony whereof, I afiix my signature in the presence of two-Witnesses this 23rd day of December 1912.

HARRY J. ALVIS.

\Vitnesses S. G. Coon, Gno. KRONMILLER.

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