US1360909A - Cylinder for light engines - Google Patents

Description

A. H. R. FEDDEN- AND L. F. G. BUTLER.

CYLINDER FOR LIGHT ENGINES.

APPLICATIQN FILED. JUNE 2, 1920.

'1 ,360,9()9, Patented Nov. 30, 1920.

2 SHEETS-SHEET l- A. H. R. FEDDEN AND L. F. G. BUTLER.

CYLINDER FOR LIGHT ENGINES. APPLICATION FILED JUNE 2.1921).

1,360,909, PatentedN 0,1920.

2 SHE HEE M6 aw- UNITED STATES PATENT orricE.

ALFRED HUBERT ROY FEDDEN AND LEONARD FREDERICK GEORGE BUTLER, OF BRISTOL, ENGLAND, ASSIGNORS OF ONE-THIRD TO THE COSMOS ENGINEERING COMPANY LIMITED, 0F BRISTOL, ENGLAND.

CYLINDER FOR LIGHT enemas.

Specification of Letters Patent.

Patented Nov. 30, 1920.

Application filed June 2, 1920. Serial No. 385,958.

T 0 all 20 71.0721. it may concern:

Be it known that we, ALFRED HUBERT Ro'r :F'soDEN and LEONARD FREDERICK GEORGE BUTLER, both subjects of the King Engines, of which the following is a specification.

This invention relates to an improved construction of cylinder and head for a light engine such for example as an internal-combustion engine. It has for its object to provide means'whereby a cast-on head may be more securelyheld to the parts on to which it is cast.

The invention is particularly suitable in its application to an air-cooled cylinder of which the cast-on head is formed of a metal of high heat conductivity, such for example as aluminium.

According to the invention, a cylinderhead is cast on to a part (for example a cylinder or a valve-seating) and is characterizedby the said part having a flanged peripheral rib, for example a rib of T-shaped cross section, interrupted or otherwise, which rib is carried on a surface of the part which is covered by the casting.

The invention also includes a cylinder or a valve-seating having a flanged peripheral rib, interrupted or otherwise, to be emtrated, a cylinder A provided with coolingfins A has its upper end a portion A free from cooling-fins but having a pcripheral rib B formed integral with it. This rib extends outwardly from the portion A is of T-section as shown and is preferably turned from the solid. At intervals around the rib B are orifices B in the web thereof. Valve-seatings C are also formed with ribs 0 similar to the ribs B and the ribs 0 have orifices C at intervals around them in a similar manner to the ribs B. A head D of material having good thermal conductivity, preferabl alunnnium, is cast on to the cylinder and valve-seatings C so that the metal of the head covers or embraces the ribs B and C and interlocks with them. The orifices B and C permit of the escape of air from the channels formed by the ribs when the head is being cast on.

The said T-section rib may extend entirely around the periphery of the cylinder or valve seating or other part of which it is formed, or it may be divided into sections separated by-gaps of any desired length. 7

An advantage of the present construction is that in addition to the ribs B and 0 constituting a means whereby a cast-on head is retained in firm contact with the parts on v to which it is cast, the head is freed from encumbrance of any form of retaining de-' vice, such as studs or bolts.

Also a considerable latitude as to the position of the sparking plug is possible, and if it is inserted through the side of the head, as it would be in a cylinder of thev type illustrated inthe accompanying drawings, there is no necessity to boss up the metal'as'there is adequate thickness already provided in the head. The machining is" thereby facilitated.

Although one particular form of the invention has been described in detail, the invention is not limited to those details and it will be readil understood that the invention'is applica le to an engine of the sleevevalve type in which separate valve-seats are not required. I

Moreover, the invention is not limited to internal-combustion engines but is applicable to any cases where a cast-on head is desired.

What we claim as our invention and desire to secure by Letters Patent is 1. In an engme-cylinder, the combination of a part having a flanged peripheral rib, and afcylindr-head cast on said part and interlocking with said rib.

2. In an engine-cylinder, the combination 105 of a part having an interrupted flanged peripheral rib, and a cylinder head cast on said part and interlocking with the said ml).

3. In an engine-cylinder, the combination of a part having a perforated flanged peripheral rib, and a cylinder head cast on said part and interlocking with said rib.

4. In an engine-cylinder the combination of a part having a sectionalized and perforated flanged peripheral rib, and a cylinder-head cast on said part and interlocking with said rib.

5. In an engine-cylinder, the combination of a cylinder-barrel having at one of its ends a flanged peripheral rib, and a cylinderhead cast on said barrel and interlocking with said rib.

6. In an engine-cylinder, the combination of .a cylinder-barrel, having at one of its ends a sectionalized and perforated flanged peripheral rib and a cylinder-head cast on said part and interlocking with said rib.

7. In an engine-cylinder, the combination of a cylinder-barrel having at one of its ends a flanged peripheral rib, a valve-seating having a fianged peripheral rib, and a cylinderhead cast on to said barrel, and on to said valve-seating, and interlocking with the said ribs on them.

8. In an internal-combustion engine cylinder, the combination of a cylinder barrel having radiating fins on its curved surface and a circumferential rib of T-seetion perforated in its web, near one end of said barrel, a valve-seating havin a circumferential rib of T-section per orated in its web, and a cylinder-head cast on to said barrel and said valve-seating and interlocking with the said T-section-ribs thereon.

In testimony whereof we have signed our names to this'specification in the presence of two subscribing witnesses.

ALFRED HUBERT ROY FEDDEN. LEONARD FREDERICK GEORGE BUTLER. Witnesses:

N. LUKE, H. M. VINCENT.

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