US1798040A - Valve mechanism - Google Patents

Description

R. SHOWMIN VALVE MECHANISM mmh '24, mi.

2 .Swolfs-sheer `Filed Feb. 16, 1928 E Vz/ noewlfoz March 24, 1931. R, sHOwMlN VALVE MECHAN I SM Filed Feb- 16, 1928 2 Sheets-Sheet Patented Mar. 24, 1931 UNITED STATES` PATENT OFFICE ROSS SHOWMIN, OF TOLEDO, OHIO VALVE MECHANISM Application l'ed February 16, 1928. Serial No. 254,807.

This invention relates to aV valve mechanism.

It is particularly aimed to provide a construction wherein the valve mechanism may be maintained comparatively cool for etlicient operation.

- Anotherobject is to provide a novel construction wherein the parts are hollow and in communication with the water jacket of'an internal combustion engine so that the waterV thereof may be used for cooling purposes.

The present invention constitutes an improvement of the valve mechanism disclosed in my Patent No. 1,719,674, July 2, 1929.

Vith the foregoing and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, wherein:

Figure 1 is a view in side elevation of an internal combustion engine equipped with a valve constructed in accordance with my invention,

Figure '2 is a sectional view taken on the vertical plane indicated by the line 2 -2 of Figure 1,

Figure 3 is a sectional view taken on the vertical plane indicated by the line 3-3 of Figure 2,

Figure 4 is a sectional view taken on the horizontal plane indicated by the line 4-4 of Figure 3, and

Figure 5 is a sectional View taken on the vertical plane indicated by the line 5 5 of Figure 3.

Referring in detail to the drawings, 1 designates the cylinder block, 2 the head, 3 the crank case and 4 the water jacket of an internal combustion engine. All parts of the engine, with the exception of the head 2 and the parts associated therewith, may be of any well known or appropriate construction.

The head 2 is hollow, and is provided in its upper side with a longitudinally extending opening 5. A gasket 6 and a plate 7 close the opening 5, and are secured in place by cap screws 8. Bolts 9 secure the head 2 to the cylinder block 1, and they pass through sleeves 10 arranged lwithin andformed integrally with the head. p

A valve tube or chamber 11 extends centrally andlongitudinally through the head 2, and is formed integrally with the ends thereof. Tubes 12 which extend from the lower side of the valve chamber 11 to the lower sidey of the head 2 and are formed integrally with these parts, provide passages for .con-w veying the explosive mixture or fuel from the valve chamber to the engine cylinders-and for conveying the exhaust or spent gases from the cylinders through the valve chamber. Tubes 13 which provide intake ports, extend from one lateral side of the head 2 to the corresponding side of the valve chamber 11, and tubes 14 which provide exhaust ports, extend from the opposite side of the valve chamber to the opposite side ofthe head, these tubes being formed integrally with these parts. Intake and exhaustmanifolds, not shown, are to 'be secured to the sides of the head 2in communication with the intake ports 13 and exhaust ports 14, respectively. v

A hollow cylindricalv valve is rotatably mounted in the valve chamber 11. It is provided with ports 16 adapted to controlthe admission of the fuel tothe engine cylinders through the intake ports 13 and passages 12, and the escape of the exhaust-gases from the l cylinders through the passages 1,2 and the SOy exhaust ports 14. The manner in which the valve ports 16 .are arranged relatively so kas to insure-the opening and closing at the proper intervals of the intake and exhaust ports of the cylinder,-is clearly shown in Figures 3 and 4; To prevent the fuel and exhaustgases from leaking by the ports 16, the valve 15 is provided at each side of each-of the ports with packing rings 17 which contact-with the valve chamber 11.- adj acentthe ports 13 and 14. The valve 15 extends beyond the ends ofthe head 2. Collars 18 which are secured to the-ends of the valve 15 and contact with the-ends of the head 2, serve to -hold the valve against endwise *play in the valve chamber 11. The valve 15 is rotated from the crank shaft 19 of the engine by a sprocket chain 2O which passes about a sprocket wheel 21V secured the valve chamber 11, and the blocks are.

adapted to be moved downwardly to eect the stated adjustment of the valve 15 by screws 25 which are threadedly engaged with the guides, contact with the upper ends of the blocks andare accessible to the opening 5 0f the head 2. The valve 15 is maintained in adjusted position by jamb nuts 26 engaged with the pins 25 and contacting with the upper ends of the4 guides 24, and by yokes 27 which are mounted on the collars 18 and secured to the ends of the head 2 by cap screws 28. |Ihe openings 29 in the yokes 27, which are provided for the reception of thescrews 28, are larger diamet-rically than the screws in order to permit the valve 15 to be adjusted in the manner stated and the yokes to be thereafter adjusted to compensate for the change in position of the valve to move the yoke to the most advantageous position by shifting the same along a line passing through the axes of screws 28. The screws 28 are loosened before adjusting the valve, and after the valve has been adjusted they are tightened.

lIhe valve 15 is provided with lubricant at points between the respective pairs of ports 13 and 14 by tubes 30 arranged within the head 2 and connected to the upper side of the valve chamber 11, and by pipes 31 vwhich are connected to thetub-es 30 and to whichoil from the crank case 3 is delivered by any suitable or appropriate means, not shown.

'Ihe head 2 and the valve-15 are connected to the water jacket 4 and to the radiator of the engine tobring about the `circulation of water therethrough and thus prevent their overheating. The head 2 communicates with the water jacket 4 by way of openings 32 formed in the lower side of the former, and communicate with the radiator, not shown, by way of a tube 33 connected to its upper side and front ends by a spout 34. A pipe f 35 connected to the water jacket 4 and swivelly connected to the rear end of the valve 15 by a coupling 36, and a pipe 37- swivelly connected to the front end of the valve by a coupling 38, provide for the passage of the water through the valve. The' pipe 37 is supported by a bracket 39 through which it passes and which is bolted to the front end of the head 2.

The head 2 is provided with chambers 40 for the reception of the spark plugs 41, and

Vmay be Vmade when desired as are within the scope of the invention as claimed.

l/Vhat is claimed is 1. An internal combustion engine comprise ing a head having acylindrical valve chamber, a similarly formed valve rotatably mounted in the valve chamber and extending beyond the ends of the head, means carriedby the head for exerting a downward pressure on the valve, yokes secured to the valve, and

plieais adj ustably connecting the yokes to the 2. An internal combustion engine comprising a head having a cylindrical valve chamber, a similarly formed' valve rotatably mounted in the valve chamber and extending beyond the ends of the head, means angularly disposed between the vertical andhorizontal and carried by the head for exerting a downward pressure on the valve, yokes adjacent opposite ends of the valve and supporting the latter, and means adjustably connecting the yokes to the head at an angle between the vertical and horizontal and in opposed relation to the first mentioned means.

Intestimony whereof I aiix my signature.

ROSS SI-IOIVMIN.

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