GB540019A - Improvements in or relating to cast hollow poppet valves - Google Patents
Improvements in or relating to cast hollow poppet valvesInfo
- Publication number
- GB540019A GB540019A GB555040A GB555040A GB540019A GB 540019 A GB540019 A GB 540019A GB 555040 A GB555040 A GB 555040A GB 555040 A GB555040 A GB 555040A GB 540019 A GB540019 A GB 540019A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cast
- bore
- stem
- head
- sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
- B23P15/002—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings poppet valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
Abstract
540,019. Valves. STEVENS, A. H., (Thompson Products, Inc.). March 27, 1940, No. 5550. [Class 7 (vi)] [Also in Groups XXII and XXIX] A poppet valve with a closed head 61 and hollow stem 62 is cast in one piece. The inside 62a may be ground smooth, the outside turned or ground, after aligning in a lathe by means of a mandrel P, Fig. 8A, engaging the finished bore 62a, to make it concentric with said bore, and the end of the stem may be closed, after introducing sodium or other coolant 66, by forging or by welding, brazing or force-fitting a cap 67, Fig. 10. Extra metal, 30, Fig. 2, is provided in casting when the end is to be forged and a thimble 122, Fig. 19, may be inserted before forging. The core 23 is of sand and a binder, so as to be easily removable after casting, and may have a reinforcing rod 24, Fig. 2. The mould 91, Fig. 16, is of sand and the moulds 10, 11, Fig. 2, are of metal and arranged for centrifugal casting. The bore of the cast stem may have a reduced section III, Fig. 19, near the head, which may be hollow or have only a central recess 125. Hard alloys may be welded in a groove 98 to form a seat and on the end to form a tip 123 or the whole valve may be cast of hard alloys, even such as are not machinable or forgeable or both. The cavity 61a in the head may be sand blasted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB555040A GB540019A (en) | 1940-03-27 | 1940-03-27 | Improvements in or relating to cast hollow poppet valves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB555040A GB540019A (en) | 1940-03-27 | 1940-03-27 | Improvements in or relating to cast hollow poppet valves |
Publications (1)
Publication Number | Publication Date |
---|---|
GB540019A true GB540019A (en) | 1941-10-02 |
Family
ID=9798253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB555040A Expired GB540019A (en) | 1940-03-27 | 1940-03-27 | Improvements in or relating to cast hollow poppet valves |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB540019A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2515728A1 (en) * | 1981-11-03 | 1983-05-06 | Rolls Royce | FUNGUS VALVE FOR AN INTERNAL COMBUSTION ENGINE |
EP3371422A4 (en) * | 2015-11-02 | 2019-05-29 | Laurian Petru Chirila | Combustion engine intake valve |
-
1940
- 1940-03-27 GB GB555040A patent/GB540019A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2515728A1 (en) * | 1981-11-03 | 1983-05-06 | Rolls Royce | FUNGUS VALVE FOR AN INTERNAL COMBUSTION ENGINE |
EP3371422A4 (en) * | 2015-11-02 | 2019-05-29 | Laurian Petru Chirila | Combustion engine intake valve |
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