US1512295A

US1512295A - Air-cooled cylinder

Info

Publication number: US1512295A
Application number: US523929A
Authority: US
Inventors: Hemsley B Massey
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-12-21
Filing date: 1921-12-21
Publication date: 1924-10-21
Anticipated expiration: 1941-10-21

Description

0a. 2-1. 192%. 1,512,295 H. B.- MASSEY I AIR 000L155 CYLINDER Filed Dec. 21. 1921 2 Sheets-Sheet l Patented Get. 21 1924.

barren stares Emmet HEMSLEY B. Massey, or CANTON, OHIO.

Am-oooLEn. oynmnna.

To-all whom it may concern:

-' Be it known that 1, HEMSLEY B; MASSEY, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented anew and useful Air-Cooled Cylinder, of which the following is a specification. t

The invention relates to air cooled cylinders for internal combustion engines which are provided with radial cooling fins surrounded by ajacket forming-longitudinal flues, through which air is drawn orv forced thus described may be fused or welded-upon for the purpose of cooling the, cylinder.

Cooling fins cannot be cast sufficiently thin and close enough together to produce a maximum cooling efliciency; and it has been customary to make the sameof thin strips of sheet metal but' again in practice such fins cannot be used thin enough nor can they be placed close enough together to obtain the maximum cooling efliciency.

Thex present invention involves the use of a continuous sheet of metal crimped and" closed together to form alternately reversed triangular tubes; the outer bases of the triangles comprising a continuous jacket and the inner bases of the triangles being preferabl rounded and castor welded to the eri cry of the cylinder. I

Tl ie iiivention may be embodied in the mannerillustrated in the accompanying drawings, forming part hereof, in which-- :Figure 1 is a transverse section'of theim proved cylinder;

Fig. 2, a longltudinal section of the same .on line HH, Fig. 1;

Fig. 3, a longitudinal section of the crimped sheet on a mandrel pattern resting on a core print and bottom board:

Fig. 4, a similar view, showing the drag section of a flask in position and filled with san Fig. 5, a similar section of the drag section inverted and the core print and mandrel I pattern removed; and. Fig. 6, a section through the cope and dragsection of a flask, showing sand cores in esition and a cylinder cast in the flask. imilar numerals refer to similar parts throughout the drawings. V

The improved cylinder may be made by crimping a sheet of metal to formaseries or reversely positionedtriangles, with the sides or their bases in abutment, thus form- 'position as shown in Fig. 6.

Application filed December 21, 1921. Serial No. 523,929.

ing reversely positioned triangular tubes as shown in Fig. 2; the ends ofthe sheet being welded together to form a continuous sheet.

The bases 7 of the outer triangular tubes 8 together form a continuous jacket integral with the common walls of the adjacent tubes, and the bases 10,013 the inner tubes 11 are preferably rounded to form angular orpointed ovids, the rounded bases of which are fused or welded integral with the ps riphery ofthe wall 12 of the cylinder.

The continuous sheet metal fins and jacket the peripheryof. a cylinder by placing the same in a mold around a mandrel pattern 13, and retaining the same in proper diam- 'eter' by means of hoops or rings 14, the crimped sheet being "temporarily supported aflask may be placed upon the bottom board around the mandrel pattern and then filled with sand as shown in Fig. 4. I a

The drag may then be inverted and the mandrel pattern and core print removed to complete the mold, as shown in Fig. 5. Sand cores 17 and 18 are then inserted in the mold, and a cope section 18f filled with sand and provided with a gate 19 is then placed in By pouring metal through the gate, a

cylinder 20 iscast aroilnd the core and within the surrounding bases of the triangular tubes 11 which are therebyfused 0r welded integral with the metal of the cylinder, the

sheet'metal being preferably coated with tin if desired to. facilitate. the operation, in a well known manner.

By thus forming the fins of a continuous sheet, crimped into triangular. tubes, much.

thinner metal can be used which can be readily handled in the foundry processes. There is only one continuous part to place in the mold and all the tubes naturally find their proper position when mounted around a mandrel pattern and sustained thereon by surrounding hoops or rings. An equa or greater cooling area is obtained by the use of thinner metal as compared w1th separate strip fins, and the use of a separate jacket is obviated by the jacket formed by the integral bases of the outer triangular tubes, which being integral, increases the area of the radiating surface.

I claim? 1. The method of making engine cylinders comprising shaping a. sheet'of metal to provide cooling fins and an annular jacket integral with the same, placing the same in a mold, and casting a cylinder within the same.

2. The method of making engine cylinders comprising shaping a sheet of metal to provide cooling fins-and an annular jacket integral with the same, coating the sheet With tin, placing the; same in a mold, and casting a cylinder Within the same.

3. The method of making engine cylinders comprising shaping a sheet of metal to form comprising shaping a continuous sheet of metal to form a continuous plurality of oppositely tapered tubular portions and fusing thesame to a cylinder.

HEMSLEY B. MASSEY.