US2563348A

US2563348A - Cylinder structure for internalcombustion engines

Info

Publication number: US2563348A
Application number: US784548A
Authority: US
Inventors: Kenneth E Lyman
Original assignee: TUCKER CORP
Current assignee: TUCKER Corp
Priority date: 1947-11-07
Filing date: 1947-11-07
Publication date: 1951-08-07
Anticipated expiration: 1968-08-07

Description

Aug. 7, 195] Filed NOV. 7, 1947 K. E. LYMAN 2 Sheets-Shet 1 Aug. 7, 1951 K. E. LYMAN 2,563,348

CYLINDER STRUCTURE FOR INTERNAL-COMBUSTION ENGINE Filed Nov. 7, 1947 2 Sheets-Sheet 2 Patented Aug. 7, 1951 CYLINDER STRUCTURE OR INTERNAL- COMBUSTION ENGINES e h L man, C signs; to Tucker Corporation, Chicago, 111., a corporation of Delaware Application November 7, 1947, Serial No. '784,543

This invention relates to cylinder structures f r int rnal combustion engines a more particularly to a cylinder block construction hava unitary head.

It the usual practice in engines to form the cylinder block and the head separately and to connect them by means of belts or machine screws, In engines of this type the valve mechis ordinaril assembl d d rectly on either the head or the block with the valve seats formed in or inserted directly in the head or the block. This type of construction is expensive to construct and assemble and requires that the engine be almost completely dismantled to repair or replace any of the parts.

It is one of the objects of the present invention to provide a cylinder structure which is simple and inexpensive to construct and in which the associated parts can easily be assembled.

Another object is to provide a cylinder structure which is formed with openings to receive separate valve units and which has side ports to connect with the valve units. According to one feature the cylinder structure may be formed with passages to conduct oil to or away from the valve units to insure proper lubrication.

Still another object is to provide a cylinder structure in which the cylinder block is cast around a cylinder sleeve and includes an integral head portion extending across one end of the sleeve. The head portion preferably is formed with openings to receive the valve units and with ports extending through the sides thereof communicating with the valve openings.

The above and other objects and advantages of the invention will become more readily apparent from the following detailed description when read in connection with the accompanying drawing in which:

Figure 1 is a central section through a cylinder construction embodying the invention; and Figure 2 is an end view of the cylinder block.

As shown in Figure 1 the cylinder construction of the present invention is adapted to form a part of an engine including a crankcase I formed with a series of openings II to connect to the several cylinders. The crank-case may contain the usual crankshaft not shown for connection to pistons workings in the cylinders.

The cylinder construction comprises a plu- '3 Q aim (Cl. 123=. 3)

ral ty of ubula sleev s l; which ma be iermed of a relative y hard mater a such as steel or bronze, .or which may h ormed of a li ht terial coated with a harde mater al o farm a wearing surface. Each sleeve is open at both ends an formed its oute snriace .adiaee its ends with a se e o ro ves 43 o similar inden ations o is tate lock n he sleev the black.

A plurality of sleeves are preferably contained in a singular block structure which may be cast around the sleeves and which is preferably formed of a relatively light material, such as aluminum alloy. As shown the block comprises a base portion l4 cast closely around the inner end of the cylinder and formed with an outwardly extending flange to receive screws l5 for securing the block to the crankcase. The block includes side wall portions is which are spaced from the central portions of the cylinder sleeves to provide a cooling jacket. Preferably, as shown in Figure 2, the block side wall curves inward between adjacent sleeves to provide a cooling jacket of more nearly uniform section throughout the length of the block. The block further includes an integral head portion l1 extending across the outer end of the cylinder.

At the opposite sides of the head portion is formed with upwardly extended angular bosses I8 which are formed with cylindrical openings l9 therethrough. At the outer sides of the block ports 2| are formed communicating with the cylindrical openings l9 intermediate their ends and opening at the outer surfaces of the block. Manifolds 22 may extend along the opposite sides of the block and may be formed with side openings 23 to register respectively with the ports 2|. To secure the manifolds to the block they are formed with flanges 24 around the ppmings 23 through which bolts 25 may extend into the block. As shown the casting is cored out to provide continuations of the cooling jacket extending around the ports as shown at 2B.

The openings I9 are adapted to receive valve cage assemblies as more particularly described and claimed in my co-pendingapplication Serial No. 781,664 filed October 23, 1947, now abandoned.

In order to supply lubrication to the valve units or to carry away excess lubrication therefrom the block is formed with passages 21 extending beside the openings l9 and communicating with the outer ends of the openings through ports 28. The openings are connected by a cross passage 29 formed in a web or bridge 3| extending between the adjacent bosses I8. When the valve units are installed lubrication may be forced into them through the passages 21 and ports 28 and may flow between them through the passages 29. Where oil operated valves are employed the

passages

21 and 29 and ports 28 may serve to carry away excess oil so that the valve units will be properly lubricated at all times.

While one embodiment of the invention has been illustrated and described in detail it will be understood that this isan illustrative detail only and is not to be taken as a definition of the scope of the invention, reference being had for this purpose to the appended claims.

What is claimed is:

1. In an internal combustion engine, a cylinder block formed with a side wall portion and an integral head portion, the head portion having a pair of elongated valve openings therethrough, means forming a passage connecting the valve openings adjacent their outer ends, the head portion having passages therein adjacent the outer sides of the valve openings, and there being ports in the head portion connecting said passages with the valve openings.

2. In an internal combustion engine, a cylinder having a head, an elongated valve opening through the head, a lateral port formed in the head and communicating with the opening centrally of its length, and a relatively small lubricant port formed in the head and communicating with the valve opening adjacent to the outer end of the valve opening.

3. In an internal combustion engine, a cylinder having a head, a pair of spaced elongated valve openings through the head, the head having passage therein communicating with the openings through ports centrally located with respect to the length of the openings, relatively small lubricant ports formed in the head and communicating with the valve openings adjacent to their outer ends, and means forming a passage connecting the valve openings adjacent to their outer ends.

KENNETH E. LYMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 893,323 Greuter July 14, 1908 930,372 Green Aug. 10, 1909 1,204,995 King Nov. 14, 1916 1,341,227 Diamond May 25, 1920 1,482,478 Milligan Feb. 5, 1924 1,617,845 Hall Feb. 15, 1927 2,125,106 Gehret July 26, 1938 FOREIGN PATENTS Number Country Date 349,508 Great Britain of 1931