US1409518A - Cylinder for internal-combustion engines - Google Patents

Description

L. BEEGHLY.

CYLINDER FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED DEC. 26, 1919.

1 ,409,5 1 8. V Patented Mar. 14, 1922.

Uh dUU Ui xip KW L717 I 6% UNITED STATES LLOYD BEEG-HLY, OF WAUWATOSA, WISCONSIN.

CYLINDER FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Mar. 14, 1922.

Application filed December 26, 1919. Serial No. 347,523.

To all whom it may concern:

Be it known that I, LnoYn BEEGHLY, acitizen of the United States, residing in the city of Wauwatosa, county of Milwaukee, and State of Wisconsin, have invented certain new and useful Improvements in Cylinders for Internal-Combustion Engines; and I do declare the following to be a full, clear, and exact description thereof, such as will enablepersons skilled in the art to which the invention pertains to make and use the same, reference being had to the accompanying drawings for disclosure as to details of construction.

The present, invention relates primarily to the cylinder block of internal combustion engines of the type used in automobiles, but it is capable of being used in constructing the cylinders of other types of engines, and while I have shown my invention as'embodied in a construction of engine of the type first mentioned, it is to be understood that the invention is not to be limited to such embodiment, but that it may be used in the construction of any form of engine cylinder in which the medium employed for actuating the piston of the engine is the source of heat created within the cylinder.

One object of my invention is the production of an engine cylinder in which high temperatures shall be prevented, and this tures, but notwithstanding these, the ditfi-.

culty is not always obviated, and is frequently present in the most approved types. The water circulating systems now generally employed are such as to increase by a considerable amount the co'st. of engine construction.

It is the purpose of my invention to eliminate entirely the present complicated and costly systems of cooling the engine cylinders, and to provide a cooling system in which the rapid circulation of cold air will be the active agent in maintaining low temperatures about the engine, and s0'pre vent the common overheating which is the source of so much trouble at the present time.

In achieving these very desirable results, I have produced an engine cylinder block by the simple and inexpensive means of building up a superposed series of laminated plates, each of which plates is punched from a sheet of metal, and provided with suitable openings to form the bore for the cylinder when the plates are assembled, and with registering holes whereby the assembled plates may be bolted into a solid block having a unitary integrity. The plates at the time of passin through the punching press are also provided with numerous other holes which register with each other and form ducts .for the passage of currents of cold air through the block and about the cylinder. In my experiments, I have found that aluminum is possessed of an exceedingly high degree of conductivity, and it is from sheets of this metal that I punch the plates from which my improved cylinder block is constituted. Having due regard for the proportionate thickness of the walls of the cylinders, the completed and assembled block will be honey-combed with a multitude of air ducts, through Which currents of cold air willbe induced to pass upon the first generation of heat in the cylinder block, with the result that the temperature of the cylinders is maintained at a very low point during the whole of the time that the engine is in operation. Y In the accompanying drawings: Figure 1 is a plan view of a portion of one of thealuminum plates of which my improved cylinder block is constituted, and showing the relative arrangement of the cylinder bore, the air ducts and the bolt holes, by means of which latter the plurality of superposed plates embodied in the completed article are secured into an integral structure; Y

Fig. 2 is a view in side elevation of a completed cylinder block and a portion of the crank shaft casing;

Fig. 3 is a sectional view on the line 3-3, Figure 1, showing the interlocking ribs and grooves with whicheach of the plates of the laminated cylinder block is provided,

and showing the cylinder bore as provided with a lining. I I

Referring further to the drawings, A, in

Figure .1, indicates one of the aluminum.

plates used in building up my improved cylinder block, the latter being indicated at 55 block, which is thus provided with radiating B, in Figure 2. The said plate is produced by the action of a punching pressequipped with suitable dies for perforating the large openings a, for the cylinder bore, the bolt holes a, and the air ducts a On account of the large number of the latter and their distribution throu bout the plate, only a few of them have een indicated by reference characters upon the drawings. The bolt holes a, are disposed so as to closely encircle the bore of the cylinder, as well as bein distributed over the area of the plate in such number and position as to permit the bolts when passed therethrough, to bind the series of. plates into a solid structure havin all of the attributes of an integrally forme block.

I also subject each plate to the action of compression orstamping dies, which produce upon the plate a circumferential rib a and coincident groove a which, in the construction illustrated, lie in a vertical plane closely surrounding the cylinder bore. lVhen the plates are assembled, the ribs upon one side of the plate and the consequent and corresponding grooves upon the other, interlock with each other, and thus contribute to the integral character of the block. The

bolts which pass through the holes a in the series of plates serve to complete the unitary structures.

While the action of the dies of the punching press is such that the openings constituting the bore for the cylinder are produced with entire accuracy, I have found it desirable to bore out the cylinders after the plates have been assembled and bolted.

As before indicated, the air ducts formed by the registering holes in the plates are brought into line when the plates are assemb ed, and through these ducts the currents of cold air, the flow of which is induced by the first rise of temperature in the engine, pass in continuous succession. meta-lwalls a of the ducts radiate the heat very rapidly, by reason of the extreme conductivity of the particular metal employed. As a result, the temperature of the engine is maintained as nearly at normal as it is possible to do.

The showing of Fig. 2 is merely conventional, and specific description 'of the manner of mountin the cylinder block upon the crank case fact that such manner is as usual and well known.

The invention is applicable in the construction of cylinder blocks having any desired number of cylinders. Figure 2 shows a 4-cylinder construction.

It will be observed that the air-ducts a whatever may be their contour, are distributed throughout the whole of the cylinder The thin is unnecessary, in view of thesurfaces in an unusual degree, and by means of which any heat generated in the cylinders is quickly dissipated into the atmosphere. The natural tendency of the heat to induce currents of cold air to flow through the airducts in the cylinder block, may be supplemented by the use of draft devices of any of the usual forms. A baflie plate D, inclined from front to rear, may be arranged at the sides of the cylinder block, to force the cold air to the lower level of the block, where it will pass upwardly into the air-ducts of the cylinder block. But this expedient will not ordinarily be resorted to, inasmuch as the purpose of the invention is sufliciently attained without the use of such baflle plate.

I have found aluminum sheets to be best adapted for use in the production of my im proved cylinder block, by reason of the extreme conductivity of that particular metal. but I do not wish my invention to be limited to the use of such material. In fact, aluminum alloys, as well as other metals, may be used with satisfactory results. And while I' the appearance thereof. The smooth exterior surfaces formed by the imperforate margins of the plates, when asembled into the unitary structure, constitute an enclosing wall for the cylinder block, so that the currents of air can pass only through the openings provided therefor in space between the cylinder bore and such enclosing wall.

In assembling the plates into a block, the former may be coated with a gum or cement of heat resisting properties, which with the bolts, will serve to unite the plates into the desired unitary or integral structure.

If desired the bore of the cylinders may be provided with a tubular lining a, as shown in Fig. 3, which lining will be inserted in any approved manner.

Having thus described my invention, what I claim and desire to secure by Letters Patent of the United States, is

1. An air-cooled engine, the cylinder block of which is composed of a series of superposed plates having perforations which form ducts for the passage of currents of air to retard the rising of the temperature of the engine.

2. An air cooled en 'ne, the cylinder block of which is compose of a series of plates having registering perforations which form ducts for the passage of currents of air to retard the rising of the temperature of the engine, and other openings which form the bore of the cylinder.

3. A laminated cylinder block for an air cooled engine, composed of a series of plates provided with registering perforations to form ducts for the passage of currents of air to retard the rising of the temperature of the engine.

4. A cylinder block for an air cooled engine, composed of a series of superposed plates perforated at a central point to constitute the cylinder bore, and at other points radial thereto to form ducts for the passage of currents of air to retard the rising of the temperature of the engine.

5. A cylinder block for an air-cooled engine, composed of a series of superposed plates, in which are formed a transverse cylinder bore and ducts parallel therewith for the passage of currents of air to retard the rising of the temperature of the engine.

6. A cylinder block for an air-cooled engine, composed of a series of superposed plates secured together into a unitary structure, and provided with a central cylinder bore and parallel air ducts surrounding the cylinder bore.

7. A cylinder block for an air-cooled engine, composed of a series of superposed plates of high conductivity assembled and secured into an integral structure, each of the -plates being provided with a central opening, the latter constituting the cylinder bore when the plates are assembled, said block being provided with a plurality of ducts parallel to the cylinder bore and with each other, to form passages for currents of air to retard the rising of the temperature of the engine.

8. In an air-cooled engine, a cylinder block. composed of a series of superposed plates of high conductivity assembled and secured into an integral structure, andhaving a cylinder bore passing through the block, and a plurality of air-ducts parallel to the cylinder and concentric thereto, to form passages for currents of cold air to retard the rising of the temperature of the engine.

9. A cylinder block for an air cooled 'engine, composed of a series of superposed plates of high conductivity, assembled and secured into an integral structure, and having a cylinder bore therein, the outer portion of the walls of the cylinder being honeycombed with a multitude of air-ducts parallel to the cylinder bore and with each other, to form passages for currents of air to retard the rising of the temperature of the engine.

10. A cylinder block for an air-cooled engine, composed of a series of super osed plates of high conductivity, assemble and secured into an integral structure, the outer portion of whose cylinder walls are honeycombed with a multitude of air-ducts parallel to the cylinder bore and with each other, the said air-ducts having continuous and unbroken inner surfaces from the lower ends to the upper ends in order to create strong natural draft or suction when the air with in the air ducts becomes heated.

11. In an air-cooled engine, a cylinder block composed of a series of plates of uniform contour secured into an integral structure and having a cylinder bore, the area between the outer margins of the plates and the opening for the cylinder bore being perforated to permit the passage of cooling currents of air, and the said outside margins of the'plates, when assembled, constituting an air tight enclosing wall for the cylinder block.

12. An internal combustion engine cylinder having the walls of the cylinder and jacket composed of a series of laminations in direct-contact and disposed transversely to the cylinder axis, each of such laminations having a radial width several times its thickness.

13. A jacketed internal combustion engine cylinder having the walls of the cylinder and its jacket, composed of a series of plates in direct contact and each forming a portion of the cylinder and its jacket.

14. A laminated internal combustion engine body having a machined bore extending transversely of the laminations and constituting a combustion chamber, the laminations having a radial width exceeding their thickness, and arranged in contact with each other throughout their surface areas.

15 A laminated internal combustion engine body having a series of machined bores extending transversely of the laminations along a line longitudinal of the body, each bore constituting a combustion chamber; said laminations being also apertured to provide multiple duct along the combustion chambers, adapted to direct a cooling agent into heat absorbing relation to the walls of such chambers.

16. A jacketed internal combustion engine having the walls of its cylinder composed of a series of superposed plates substantially uniform in configuration, and each of such plates forming a part of the cylinder and its jacket.

17. An internal combustion engine having the walls of its cylinder and its jacket composed of a series of superposed plates of substantially like diameter, -each of said plates having a plurality of perforations about the cylinder bore to form ducts for the passage of cooling currents of air.

18. In an engine, a cylinder block embodying a plurality of plates each formed with cylinder bores and openings for the latter for the conduction of a cooling agent through the cylinder block, 'andwith limngs for t e cylinder bores extending axially thereof.

In testimony whereof, I have signed my name at Milwaukee, Wis., this 19th day of December, 1919.

LLOYD BEEGHLY.

Witnesses W. F'. Woomnn, A. R. WOOLFOLK, Jr.

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