US968545A - Water-jacket for explosive-engines. - Google Patents

Description

J. P. & H. E. DODGE. WATER JACKET FOR EXPLOSIVE ENGINES. APPLIUATION FILED SEPT. l, 1905. RENEWED JUNE 3, 1910. 96 545 Patented Aug. 30,1910.

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J. P. & H. E. DODGE.

WATER JACKET FOR EXPLOSIVE ENGINE$.

APPLICATION EILED SEPT. 1, 1905. RENEWED JUNE 3, 1910.

' Patented Aug.30, 1910.

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I! ////K r UNITED STATES PATENT OFFICE.

JOHN F. DODGE AND HORACE E. DODGE, OF DETROIT, MICHIGAN.

WATER-JACKET FOR EXPLOSIVE-ENGINES.

Specification of Letters Patent.

Patented Aug. 30, 1910.

Application filed September 1, 1905, Serial No. 276,693. Renewed June 3, 1910. Serial No. 564,854.

To all whom it may concern:

Be it known that We, JOHN F. DODGE and HORACE E. Donon, citizens of the United States, residing at Detroit, in the county of Wayne, State of Michigan, have invented certain new and useful Improvements in Water-Jackets for Explosive-Engines; and we do 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, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to water-jackets for explosive engine cylinders, and consists in the construction and arrangement of parts hereinafter fully set forth and pointed out particularly in the claims.

The objects of the invention are to materially reduce the weight of the cylinder, by providing a sheet-metal water-jacket surrounding the same and to provide a sufiicient volume of water to obviate excessively heating the cylinder; to provide for reducing the cost of casting the cylinder and enabling it to be cast with walls comparatively thin and of uniform thickness; to provide for securing the water-jacket around the cylinder in such a manner as to maintain it perfectly in place and obviate all liability of leakage, and to provide for establishing proper circulatory orifices connecting the water space around the cylinder with the water space surrounding the combustion chamber located in the removable cap upon the cylinder.

head. The above objects are attained by the structure illustrated in the accompanying drawing, in which Figure 1 isan elevation, partly in section, of an explosive engine of the gasolene type, to which our invention is applied. Fig. 2 is a central vertical section as on line 2-2 of Fig. 1. Fig. 3 is a horizontal section as on line 33 of Fig. 2. Fig. 4 is an enlarged fragmentary view in section, through a portion of the cylinder wall and lateral flange thereon in which the lower edge'of the jacket is secured. Fig. 5 is a fragmentary View in section, through a portion of the upper end of the cylinder, and a portion of the cap seated thereon, showing the stress ring or collar seated in a counter-bore of the connecting apertures between said parts and adapted to take the strain incident to the explosions and relieve from stress the copper gasket formed by the upper portion of the water-jacket Which lies between the cap and cylinder head. Fig. 6 is a fragmentary view in section, showing one of the tie bolts, which are employed to secure the cap to the cylinder.

The practice in providing an explosive engine with a Water-jacket, especially of the multiple cylinder type, of casting said jacket around the cylinders by illc use of cores is objectionable for the reason that such practice, results in cylinder walls of varying thicknesses, and in excessive weight, at the same time requiring considerable expense to produce, and affording but a comparatively small water space, owing to the dilliculty of casting the walls sufiiciently thin and to the necessity of reducing both the size and weight of the engine. lly means of our improved jacket, we create an unusually large water space around the cylinder or cylinders, reduce materially the cost of casting the cylinders, and the weight thereof, and enable the cylinders to be maintained at the proper temperature, because of the presence of the large volume of water surrounding them.

lVe have shown our invention as applied to a multiple cylinder engine.

Referring to the drawings by the characters of reference, 1 indicates the cylinders which are cast integral with a water space 2 between them. Surrounding the cylinders and projecting from the walls thereof near the base, is a lateral flange 3 which is continued between the cylinders forming the webs 4 which close the bottoms of the water spaces 2. Surrounding the'cylinders above the flange 3 is a water-jacket 5 of suitable sheet-metal, preferably of copper, the lower end of which is rolled or provided with a bead 6 adapted to lie in a channel in the upper face of the flange 3, and secured therein by a filling 7 of molten lead, or other malleable or plastic material, adaptable for the purpose, said channel having an undercut portion 8 into which said filling flows or is crowded, whereby when the filling becomes hardened, it is securely retained within the channel, thereby firmly sealing the lower end of the jacket 5 therein. Said jacket isformed of ductile material, whereby it maybe so shaped or drawn as to enable it to be placed in position by passing it downwardly over the cylinders, the top portion 9 thereof lying upon the flanged heads 10 of the cylinders and forming a gasket between said heads and the caps 11 which are bolted thereto, said gasket or jacket top having apertures therethrough which register with the openings 12 through the cylinder heads which communicate with the combustion chambers 13 in the caps 11. The presence of the waterjacket around the cylinders forms a water space ll of considerable area because of the thinness of the wall of the jacket, making it possible to maintain a large volume of water around the cylinders, thereby preventing the conversion of said water into steam and keeping the temperature of the cylinders down to the desired point.

For the purpose oi relieving the gasket 9, formed by the top of the water-jacket lying between the cylinder heads and the caps, from the strain 01 the explosions in the combustion chamber, and to prevent the possible blowing out of said gasket by the force of the exploded charge, the openings 12 and 15 in the cylinder heads and caps which establish conn'nunication between the cylinders and the combustion chambers, are counter bored at the-junction thereof to receive the stress collars or rings 16, which are fitted into said counter-bores, so as to make a tight joint. thereby relieving the gasket from all strain.

The caps 11 are provided with the water space 17 and to establish communication between said water space and the water space ll surrounding the cylinders, circulatory openings 18 are formed through the flanges 10 of the cylinder heads and through the bottoms of said caps, as clearly shown in Fig. 1. In securing the caps to the cylinder heads there are employed a number of bolts 19 which pass throughthe solid portion of the walls of the caps 11 and throughthe flanges of the cylinder heads 10, as clearly shown in Fig. 6, thereby firmly mounting the caps upon the cylinders and securely clamping the gaskets 9 between said parts.

It will be noted that the wall of the jacket is corrugated or rendered sinuous, thereby strengthening said wall to resist lateral pressure, and providing for the expansion and contraction thereof under varying temperatures without liability of opening the joint formed by the plastic or malleable filling 7.

Communicating with the water space 14 through the wall of the jacket is an intake pipe 20, and leading from the caps are the water educt pipes 21, said pipes being connected with a suitable pump, not shown, for maintaining the water in circulation.

In Fig. 1, 22indicates the usual intake valve and 23 the valve rod, as commonly employed in engines of this type and actuated in a manner well understood in the art.

oeaasea Having thus fully set forth our invention, what we claim as new and desire to secure by Letters Patent is:- j

1. The combination witha cylinder having 'at one end a laterally projecting flange forming the head of said'cy'lindcr, of a hollow cap containing a combustion chamber, said cap having a flat under face secured to the flanged headof the cylinder, the head of the cylinder and said cap having regis- 'tering openings to-connect the combustionchamber in the cap with the cylinder, the walls of said registering openings in the cap and in the cylinder head being counter-bored atthe juncture of said parts, a relatively thin sheet metal water jacket embracing the cylinder, and having a fiat top portion which lies upon the flanged head thereof and interposed between said head and the flat under face of said cap to form's. gasket between said parts, that portion of the water jacket which forms the gasket between the cap and cylinder head extending to and surrounding thecountenbore between said parts, a stress ring embraced by the gasket portion of the water jacket seated in said counter-bore flush with the inner walls of said parts to close the joint between the cap and cylinder head in which said gasket lies, bolts passingthroughfsaid cap and througlrthe flanged head of the cylinder .to clamp the gasket between said cap and flange, and confine said ring, and means for securing the lower end of the jacket to the cylinderwall.

2. The combination with a. cylinder. having a flanged head, of a relatively thin sheet metal water jacket embracing the cylinder and having a flat top portion lying upon the flanged head thereof forming a'water space between said jacket and the outer wall of the cylinder, a cap having 'a-water space therein. and containinga combustion charm ber, said capalso having a fiat under face which rests upon that portion of the water jacket lying upon the flange ofthe cylinder head and forming a gasket between said parts, bolts passing through said cap and through the flanged head of the cylinder to. clamp the gasket between said cap and flange, the flanged head of the cylinder, the interposed water jacket, and said cap having communicating openings to connect the water spaces of the cap and cylinder, the head of the cylinder and the cap having registering openings 'to connect the combustion chamber in the cap with the interior of the cylinder, said registering openings last mentioned being counter-bored at. the juncture of the cylinder head and cap, the gasket portion of the water jacket communicating with said counter-bore, a stress ring lying in said counter-bore flush with the inner walls of said parts to close the joint be-.

tween the capand cylinder and relieve the gasket portion of the water jacket from strain, and means for detachably securing thenlower end of the jacket to the cylinder wa 3. In an explosive engine, the combination of a cylinder having a head with a laterally projecting flange, a cap containing a combustion chamber mounted on the flanged cylinder head, the cap and cylinder head having registering openings forming a communicating passage bet-weenthe cylinder and the combustion chamber in the cap of less area than the cylinder, the walls of said communicating passage in the cylinder head and cap being counter-bored at the juncture of said parts, a sheet metal waterjacket having a flat top portion interposed between the flange of the cylinder head and the under face of the cap and extending to the counterbore between said parts to form a gasket, said sheet metal water jacket co-acting with the flange of the cylinder head to form a Water space between said jacket and the wall of the cylinder, a stress ring seated in the counter-bore in the registering openings between the cap and cylinder head and embraced by the gasket portion of the water jacket lying between said parts, said ring serving to relieve said gasket from the strain of the explosions in the combustion chamber, and bolts passing through said cap and through the flanged head of the cylinder to clamp the gasketbetween said cap and flange find confine the stress ring in said counterore.

4t. Inan explosive engine, the combination of the cylinder having a head provided with acentral aperture therethrough, a cap containing a combustion chamber and having a flat under face provided with an opening communicating with said chamber, said cap supported on the cylinder head to cause the opening thereinand in the cylinder head to register, the walls of said registering openings being counterbored, a sheet metal water jacket having a top portion flanged onto the cylinder head and interposed between said head and cap to form a gasket between said parts, said gasket portion of the water jacket being apertured to register with the openings in the head of the cylinder and in the cap, a stress ring seated in the counterbore flush with the Wall of the communicating opening between the cylinder and cap and embraced by said gasket, and bolts passing through the cap and into the cylinder head to clamp the gasket between the head of the, cylinder and cap to retain said stress ring in place.

5. In an explosive engine, the combination with a plurality of cylinders formed integral and spaced from one another, having a anged head common to all of said cylinders and spaced from the ends thereof, a sheet metal water jacket embracing the cylinders and common to all of them, said wacooperating with said flanged head to form a water space at the ends of the cylinders and surrounding the same, said flanged head and top portion of the water jacket lying thereon being apertured to provide for openings communicating with the ends of the cylinders, an integral cap having a plurality of combustion chambers and a flat under face with a plurality of apertures therethrough communicating with said chambers, said cap supported upon the flanged head of the cylinders to confine the top portion of the water jacket between said parts in a manner. to cause the apertures therein to register with the openings in the ends of the cylinders, said cap also having a water space therein, and the under face of said cap and the flanged head of the cylinders having registering openings to establish communication between the water spaces in said parts, and bolts passing through the cap and through the flanged head of the cylinders to clamp the top portion of the water jacket between said cap and head.

6. In an explosive engine, the combination with a plurality of cylinders formed integral and spaced from one another, having a flanged head common to all of said cylinders and spaced from the ends thereof, a sheet 'metal water jacket embracing the cylinders and common to all of them, said water acket havin a flanged top portion lying upon the flanged head of the cylinders and cooperating with said flanged head to form a water space at the ends of the cylinders and surrounding the same, said flanged head and top portion of the water jacket lying thereon being apertured to provide for openings communicating with the ends of the cylinders, an integral cap havin a plurality of combustion chambers an a flat under face with a plurality of apertures therethrough communicating with said chambers, said cap supported upon and secured to the flanged head of the cylinders to confine the top portion of the water jacket between said parts in a manner to cause the apertures therein to register with the openings in the ends of the cylinders, said cap also having a water space therein and the under face of said cap and the flanged head of the cylinders having registering openings to establish communication between the water spaces in said parts.

In testimony whereof, we sign this specification in the presence of two witnesses.

JOHN F. DODGE. HORACE E. DODGE.

Witnesses:

E. S. WHEELER, I. G. HowLEr'r.

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