GB539574A - Improvements in and in the manufacture of hollow poppet valves - Google Patents

Improvements in and in the manufacture of hollow poppet valves

Info

Publication number
GB539574A
GB539574A GB1121940A GB1121940A GB539574A GB 539574 A GB539574 A GB 539574A GB 1121940 A GB1121940 A GB 1121940A GB 1121940 A GB1121940 A GB 1121940A GB 539574 A GB539574 A GB 539574A
Authority
GB
United Kingdom
Prior art keywords
manufacture
valves
stem
poppet valves
hollow poppet
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
GB1121940A
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.)
ANDREW NORMAN HARLEY
ERIC CARPENTER
Original Assignee
ANDREW NORMAN HARLEY
ERIC CARPENTER
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 ANDREW NORMAN HARLEY, ERIC CARPENTER filed Critical ANDREW NORMAN HARLEY
Priority to GB1121940A priority Critical patent/GB539574A/en
Publication of GB539574A publication Critical patent/GB539574A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/20—Making machine elements valve parts
    • B21K1/22—Making machine elements valve parts poppet valves, e.g. for internal-combustion engines

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

539,574. Valves. CARPENTER, E., and HARLEY, A. N. July 4, 1940, No. 11219. [Class 135] [Also in Group XXII] In the manufacture of hollow poppet valves the junction of head and stem is strengthened by forming the stem to an enlarged diameter at this point and then reducing the stem to uniform diameter by swaging so as to leave the reinforcing metal as an internal thickening at e. The method may be applied to valves in which the head is formed from a separate piece.
GB1121940A 1940-07-04 1940-07-04 Improvements in and in the manufacture of hollow poppet valves Expired GB539574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1121940A GB539574A (en) 1940-07-04 1940-07-04 Improvements in and in the manufacture of hollow poppet valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1121940A GB539574A (en) 1940-07-04 1940-07-04 Improvements in and in the manufacture of hollow poppet valves

Publications (1)

Publication Number Publication Date
GB539574A true GB539574A (en) 1941-09-16

Family

ID=9982192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1121940A Expired GB539574A (en) 1940-07-04 1940-07-04 Improvements in and in the manufacture of hollow poppet valves

Country Status (1)

Country Link
GB (1) GB539574A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2975229A4 (en) * 2013-03-14 2016-11-30 Nittan Valva Hollow poppet valve
US11215091B2 (en) 2014-08-27 2022-01-04 Fuji Hollow Valve Inc. Hollow engine valve and manufacturing method therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2975229A4 (en) * 2013-03-14 2016-11-30 Nittan Valva Hollow poppet valve
US11215091B2 (en) 2014-08-27 2022-01-04 Fuji Hollow Valve Inc. Hollow engine valve and manufacturing method therefor
DE112015003874B4 (en) 2014-08-27 2023-11-23 Fuji Oozx Inc. Hollow engine valve and method of making same

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