GB540019A - Improvements in or relating to cast hollow poppet valves - Google Patents

Improvements in or relating to cast hollow poppet valves

Info

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
Application number
GB555040A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
Thompson Products Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thompson Products Inc filed Critical Thompson Products Inc
Priority to GB555040A priority Critical patent/GB540019A/en
Publication of GB540019A publication Critical patent/GB540019A/en
Expired legal-status Critical Current

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.
GB555040A 1940-03-27 1940-03-27 Improvements in or relating to cast hollow poppet valves Expired GB540019A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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