US1218345A - Internal-combustion engine. - Google Patents

Description

R. M. WILSON.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JUNE 16. 1916.

Patented Mar. 6, 1917.

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Patented Mar. 6, 1917..

3 SHEETS-SHEET 3 ROI-DANS 1!. WILSON, 0F PBAIBIE G-ROVE, ARKANSAS.

INTERNAL-COMBUSTION ENGINE.

Application filed June 1c, 1916. Serial No. 104 007.

To all whom it may concern:

Be it known that I, RoLLANs M. WILSON, a citizenof the United States, residing at Prairie Grove, in the county of Washington and State of Arkansas, have invented certain new and useful Improvements in Internal-Combustion 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 invention relates to an internal combustion engine.

An object of the invention resides in the provision of an engine wherein the cylinders are so arranged that the Wear upon the same will be practically obviated.

A further object of the invention resides in the provision of a novel valve mechanism forallowing the gas to enter and exhaust from the cylinders.

A still furtherobject of the invention resides in the provision of an engine which is so constructed that but few hearings will be necessary and consequently the wearable parts will be reduced in number.

With these and other objects in view such as will appear as my description progresses, my invention comprises the combination and arrangement ofparts as set forthin and falling within the scope of the appended claim.

In the drawing:

Figure 1 is a plan view of an engine 0011- structedin accordance with my invention;

Fig. 2 is a side elevation;

Fig. 3 is a vertical sectional view showing the relative positions of the intake and exhaust valves for one cylinder;

Fig. 4 is a section on line 4-4 of Fig. 3;

Fig. 5 is a horizontal sectional view showing 'the arrangement of valves and gas receiving and exhaust'chambers on line 5-5 of Fig. 3;

Fig. 6 is an end elevation of the engine;

Fig. 7 is a detail of the cam shaft; and

Fig. 8 is a detail showing the relative positions of the pistons in the cylinders.

The embodiment of the invention illustrated in the drawing includes a casting in which four cylinders 1, 2, 3 and 4 are located, the cylinders 1 and 4 beingarranged side by side and the cylinders 2 and 3. be-

ing arranged side by side with their heads in abutting relation to the cylinders 1 and 4. These cylinders are of arcuate form, the

Specification of Letters Patent.

-later more clearly appear.

' casting.

Patented Mar. 6. 1917.

center of the circle being the point about which the pistons move as a center, as will These cylinders are 'surroundedby suitable water jackets 5 which may be supplied with water from any suitable source. A piston 6 is mounted in each of the cylinders and is provided with a piston rod 7 These rods 7 are connected to the cross bars 8 of a rectangular frameA,

which frame includes these cross bars andside bars 9. The lengths of the piston rods 7 are such that the pistons in the cylinders 1 and 4 will be at the outer ends of the cylinders when the pistons in the cylinders 2 and are at the inner ends of these latter cylinders. The frame A also includes downwardly extending converging arms 10 which are-provided with trunnions 11 at their lower ends, which trunnions are mounted in suitable bearings 12 carried by thebase 13. By connecting the piston rods 7 to the cross bars 8 and 9 and by mounting the frame A in the manner described, the pistons will move within the cylinders in a predetermined relation, which relation will remain constant.

Extending between one pair of these arms 10 is .a rod 13 which is, at its other end, connected to a crank portion 14; in a shaft 15, a on which shaft a fly wheel 16 is mounted,

Thus as the frame A oscillates the wheel 1.6 will be given a rotary movement.

In order that the gas maybe let into and exhausted from the cylinders in sequence, I have extended the casting in which the cylinders are formed, as at 16', and have formed a pair of exhaust chambers 17 therein which communicate with exhaust ports 18 and 19, which ports are connected to a manifold 20. Each of the chambers 17 is provided with a pair of exhaust openings 21 and 22 which are closed by means of valves 23 and 24, the said valves having rods 25 and 26, respectively, slidably mounted in bearings 27 and extending through the portion 16 of the casting. The rods are normally seated by coil sprin s 28. Arranged opposite each of the valves 23 and 24. are valves, 29 valves are mounted in removable seats 31 which are provided so that the valves 23 and 24 may be put in place. These valves 29 and 30 are provided with rods 32 and 33, respectively, hich extend outwardly through the side of the portion 16' of the The valves 29 and 30 are for the purpose of closing inlet chambers 34 which and 30, respectively, which are arranged in pairs and communicate with each other through ports 35 and with an inlet manifold 36. 'Arranged between each pair of inlet and exhaust valves are ports 37 which extend to the cylinders so that the gas, as it passes from the chambers 34, will enter the cylinders and alternately exhaust therefrom through the chambers 17.

In, order that the valves may be properly I actuated I have provided a camshaft 38 p which is mounted in suitable bearings 39 on the casting and is driven by a suitable gear connection 40 between the shaft and the crank shaft 15. This shaft 38 is provided with a plurality of cams 41. A plurality of rocker arms 42 are pivoted between ears 43 1 0n the portion 16' of the casting, wvhich rocker arms are provided with rollers 44 which ride upon the cams 41. The opposite ends of these rocker arms 42 bear against the outer ends of the valve rods on one pair of the exhaust valves 23 and 24 and onone pair of the inlet valves 29 and so that when the cam shaft 38 is rotated the valves will be unseated. A plurality of levers 45 are pivoted between ears 46 on the casting and each bears at one end against one of A the remaining valve rods. A push rod 47 is mounted in a suitable bearing 48 on the casting adjacent to each ofthe levers 45 and bears against the adjacent cam 41 so that the levers will be actuated upon the actuation of the cam shaft and the valves unseated. Now 'these levers 45 and the misses ticular embodiment as it is obvious that numerous changes may be made in the details of construction without departing from the spirit of the invention or exceeding the scope of the appended claim.

What I claim .is: y

In an internal combustion engine, the combination with a plurality of cylinders, inlet and exhaust ports for said cylinders, valves for closing said ports, a cam shaft having cams thereon equal in number to the cylinders, rocker arms having rollers bearing against the cams and hearing at their other ends against certain of the valve rods, levers bearing at one end against the other of the valve rods and push rods engaging the opposite ends of the levers and riding upon the aforementioned cams.

In testimony whereof, I afiix my slgnature, in the presence of two witnesses.

ROLLANS M.- WILSON.

Witnesses: l

M. A. Pvam'r. Ron HANNAH.

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