US2065049A - Valve for internal combustion engines - Google Patents

Valve for internal combustion engines Download PDF

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Publication number
US2065049A
US2065049A US15896A US1589635A US2065049A US 2065049 A US2065049 A US 2065049A US 15896 A US15896 A US 15896A US 1589635 A US1589635 A US 1589635A US 2065049 A US2065049 A US 2065049A
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United States
Prior art keywords
valve
sleeve
stem
internal combustion
combustion engines
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Expired - Lifetime
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US15896A
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Bullock Frank Ernest
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/12—Cooling of valves
    • F01L3/14—Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making

Definitions

  • the heat conducting metal is applied to the exterior of the valve, and according to the arrangement shown in Figure 1, the valve stem 2 is grooved externally as at I3 to receive copper or like metal wire I4 which is wrapped round the grooves and subsequently machined fiush with the surface of the stem.
  • the valve stem 2 is grooved externally as at I3 to receive copper or like metal wire I4 which is wrapped round the grooves and subsequently machined fiush with the surface of the stem.

Description

Dec. 22, 1936. F, E BULLOCK 2,065,049
VALVE FOR INTERNAL COMBUSTION ENGINES Filed April 11, 1935 Patented Dec. 22, 1936 re'r oFFicE VALVE FOR ILEIE BNAL COWUSTION Application April '11, 1935, Serial No. 15,896 In Great Britain February 5, 1935 3 Claims.
This invention relates to valves of the poppet type as used in internal combustion engines.
At the present time the high working temperatures which obtain in internal combustion engines are a prevalent cause of valve fracture and it is the object of the present invention to provide means for preventing the valves from becoming overheated.
For this purpose, metal having a high degree of heat conductivity, such as copper, is applied to the exterior of the valve, i. e. between the valve and the valve guide.
In the accompanying drawing:-
Figure 1 represents a poppet valve and one way of applying the heat conducting metal thereto.
Figure 2 illustrates a poppet valve in which the heat conducting metal is enclosed in a sleeve.
Figure 3 illustrates a poppet valve to which the heat conducting metal is applied in the form of a wire coil enclosed within a bush.
Figure 4 shows a poppet valve in which the heat conducting metal is applied thereto in the form of a solid sleeve.
Referring to the drawing, the valve is in every case of the orthodox type having a cylindrical stem 2 and a head 3 at one end thereof.
The heat conducting metal is applied to the exterior of the valve, and according to the arrangement shown in Figure 1, the valve stem 2 is grooved externally as at I3 to receive copper or like metal wire I4 which is wrapped round the grooves and subsequently machined fiush with the surface of the stem. In the modification of this arrangement illustrated in Figure 2,
' the wire I4, instead of being machined flush with the surface of the stem, is encased in a metal sleeve I5 which is forced over the turns. The advantage of this latter arrangement is that both the sleeve I5 and. the valve guide in which it reciprocates may be made of cast iron.
In the arrangement illustrated in Figure 3, the heat conducting metal is applied to the ex-- terior of the valve in the form of a sleeve I6 made of closely coiled copper or other suitable wire or strip. The internal diameter of said sleeve is a push fit on the valve stem 2 and, as will be seen, the sleeve itself is encased in a bush I! one end I8 of which is flared to make a close joint with the neck of the valve whilst the other end is formed with an inwardly directed flange I9 which fits closely around the valve stem and retains the coiled wire sleeve I6 in position. In this figure the valve guide is indicated at 20. For the purpose of preventing relative axial movement of the sleeve I6 and. bush II on the valve stem 2 the latter, as shown, is formed adjacent the flange I9 of the bush with an annular groove 2| in which is located a circular spring 10 locking ring 22. Relative axial movement may also be prevented by spot Welding either end of the bush I! to the valve or in any other suitable manner.
In a further form, represented in Figure 4, the 15 heat conducting metal is applied to the valve in the form of a tubular sleeve or bush 23 of solid copper or other suitable good conductor of heat, the sleeve or bush being introduced onto the valve stem 2 with a driving fit. 0
In another method included in the present invention a heavy coating of copper or other heat conducting metal is applied to the exterior of the valve either by a process of electro-deposition or in the molten state by a spraying process. 25
I claim:
1. A valve for internal combustion engines comprising a head, a cylindrical stem, a coiled Wire sleeve introduced onto said stem, and made of a metal having a higher degree of heat con- 30 ductivity than that of the metal of the valve, and a bush adapted to enclose said sleeve.
2. A valve for internal combustion engines comprising a head, a cylindrical stem, a sleeve on said stem made of a metal having a higher 35 degree of heat conductivity than that of the metal of the valve, a bush adapted to encase said sleeve, an inwardly projecting flange at one end of said bush which fits closely around the stem, and a locking ring located in a groove in said 40 stem to prevent axial movement of said sleeve and bush.
3. The combination with the stem of a poppet valve, of a sleeve introduced about the exterior of said stem and made of a metal having a higher 45 degree of heat conductivity than that of the metal of the valve, and a bush adapted to enclose and protect said sleeve.
FRANK ERNEST BULLOCK.
US15896A 1935-02-05 1935-04-11 Valve for internal combustion engines Expired - Lifetime US2065049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2065049X 1935-02-05

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US2065049A true US2065049A (en) 1936-12-22

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103662A (en) * 1976-09-02 1978-08-01 K-Line Industries, Inc. Insert for rebuilding valve guides
US4185368A (en) * 1976-09-02 1980-01-29 K-Line Industries, Inc. Method for making valve guide inserts
EP0709552A3 (en) * 1994-10-31 1996-05-08 Eaton Corp
US6599345B2 (en) 2001-10-02 2003-07-29 Eaton Corporation Powder metal valve guide
EP1643087A1 (en) * 2004-09-24 2006-04-05 Eaton S.R.L. Engine valve with heat absorbing ridges in the combustion chamber
US20100077983A1 (en) * 2008-10-01 2010-04-01 Aisan Kogyo Kabushiki Kaisha Engine valves

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103662A (en) * 1976-09-02 1978-08-01 K-Line Industries, Inc. Insert for rebuilding valve guides
US4185368A (en) * 1976-09-02 1980-01-29 K-Line Industries, Inc. Method for making valve guide inserts
EP0709552A3 (en) * 1994-10-31 1996-05-08 Eaton Corp
US6599345B2 (en) 2001-10-02 2003-07-29 Eaton Corporation Powder metal valve guide
EP1643087A1 (en) * 2004-09-24 2006-04-05 Eaton S.R.L. Engine valve with heat absorbing ridges in the combustion chamber
US20100077983A1 (en) * 2008-10-01 2010-04-01 Aisan Kogyo Kabushiki Kaisha Engine valves

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