GB586934A - Improvements in or relating to sheathed headed articles, for example poppet valves, and methods of making the same - Google Patents

Improvements in or relating to sheathed headed articles, for example poppet valves, and methods of making the same

Info

Publication number
GB586934A
GB586934A GB1770144A GB1770144A GB586934A GB 586934 A GB586934 A GB 586934A GB 1770144 A GB1770144 A GB 1770144A GB 1770144 A GB1770144 A GB 1770144A GB 586934 A GB586934 A GB 586934A
Authority
GB
United Kingdom
Prior art keywords
cap
head
brazing
metal
groove
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
GB1770144A
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.)
THCMPSON PRODUCTS Inc
Original Assignee
THCMPSON 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 THCMPSON PRODUCTS Inc filed Critical THCMPSON PRODUCTS Inc
Priority to GB1770144A priority Critical patent/GB586934A/en
Publication of GB586934A publication Critical patent/GB586934A/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
    • 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

Abstract

586,934. Brazing. STEVENS, A. H. (Thompson Products, Inc.). Sept. 15, 1944, No. 17701. [Classes 83 (ii) and 83 (iv)] [Also in Group XXVII] Making valves.-A poppet valve or other headed member comprises a body with stem and head portions 22 made of stress-resisting material such as alloy steel and a corrosionresisting head sheath 13 brazed to the head by material 14, and having its periphery connected to the head by a metal bond 23 which also seals the brazing material. In one form, a solid metal billet 10 with a reduced head 11, Fig. 5, is covered first with a thin disc 14 of copper, silver or other brazing metal and then with a cap 13 of corrosion and heat-resisting material such as an alloy of 80 per cent nickel and 20 per cent chromium. The disc may be cupped to fit over the part 11 by the action of pressing on the cap 13 so that the brazing material covers the entire inner surface of the cap. In some cases the bonding metal may be electro-plated on to the cap 13 and part 11. The assembly is heated in a hydrogen atmosphere to effect the brazing of the cap and a groove 17 cut at the edge of the cap. The billet is then die pressed and extruded to form the hollow stem, Fig. 7, with an enlarged end 22a. The groove 17 is then filled with the sealing bond 23 which may be of the same material as either the cap or the valve body, forming a bead which is subsequently ground off to form the finished head. The stem is finally filled with a coolant such as sodium and the end 22a swaged to form a closed end. In a modification, the sealing bond 23 may be made before the die pressing and extruding operations. In another modification, a solid forged valve body 42, Fig. 12, has a groove 44 machined in the under surface of the head which is then electro-plated with brazing-metal. A cap 45 with a similarly electro-plated inner surface is then placed over the head and spun over the face of the valve seating, Fig. 13, the groove 44 being finally filled with the sealing bond 47 which is ground off flush with the neck 42. A similar process may be used for making hollow valves.
GB1770144A 1944-09-15 1944-09-15 Improvements in or relating to sheathed headed articles, for example poppet valves, and methods of making the same Expired GB586934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1770144A GB586934A (en) 1944-09-15 1944-09-15 Improvements in or relating to sheathed headed articles, for example poppet valves, and methods of making the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1770144A GB586934A (en) 1944-09-15 1944-09-15 Improvements in or relating to sheathed headed articles, for example poppet valves, and methods of making the same

Publications (1)

Publication Number Publication Date
GB586934A true GB586934A (en) 1947-04-08

Family

ID=10099692

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1770144A Expired GB586934A (en) 1944-09-15 1944-09-15 Improvements in or relating to sheathed headed articles, for example poppet valves, and methods of making the same

Country Status (1)

Country Link
GB (1) GB586934A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003446A1 (en) * 1982-04-03 1983-10-13 Thompson Gmbh Trw Valve for internal combustion machine and manufacturing method thereof
US20170067419A1 (en) * 2014-05-30 2017-03-09 Toyota Jidosha Kabushiki Kaisha Supercharged internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003446A1 (en) * 1982-04-03 1983-10-13 Thompson Gmbh Trw Valve for internal combustion machine and manufacturing method thereof
US20170067419A1 (en) * 2014-05-30 2017-03-09 Toyota Jidosha Kabushiki Kaisha Supercharged internal combustion engine
US10253732B2 (en) * 2014-05-30 2019-04-09 Toyota Jidosha Kabushiki Kaisha Supercharged internal combustion engine

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