GB741437A - Improvements in or relating to poppet valve mechanism - Google Patents
Improvements in or relating to poppet valve mechanismInfo
- Publication number
- GB741437A GB741437A GB942753A GB942753A GB741437A GB 741437 A GB741437 A GB 741437A GB 942753 A GB942753 A GB 942753A GB 942753 A GB942753 A GB 942753A GB 741437 A GB741437 A GB 741437A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- valve stem
- plate
- hole
- contacts
- 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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
Abstract
741,437. Valves and valve guides. WESLAKE, H. July 7, 1954 [April 7, 1953], No. 9427/53. Classes 7(2) and 7(6) [Also in Group XXIX] . The spring abutment plate 18 of a poppet valve is arranged to project slightly beyond the end of the valve stem so that the valve - operating mechanism 25 on the upstroke first contacts the plate 18 and moves it relatively to the valve stem' to relieve the valve of the load of the spring, after r which the member 25 contacts end of the valve stem to open the valve which, being unloaded, is free to rotate. The plate 18 is provided with a large diameter hole 21 through which the end of the valve stem can be passed and which adjoins a smaller diameter hole 22 adapted to engage with a reduced diameter part 17 of the valve stem, the hole 22 being stepped to allow the plate to seat on a shoulder at the end of the part 17. The upper end 15 of the valve guide 13 is chamfered or curved helically and is provided with a larger clearance at 16 than in the remainder of the guide. In a modification, the part of the valve stem below the groove 17 is conical and seats against a conical wall of the hole 22.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB942753A GB741437A (en) | 1953-04-07 | 1953-04-07 | Improvements in or relating to poppet valve mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB942753A GB741437A (en) | 1953-04-07 | 1953-04-07 | Improvements in or relating to poppet valve mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
GB741437A true GB741437A (en) | 1955-12-07 |
Family
ID=9871758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB942753A Expired GB741437A (en) | 1953-04-07 | 1953-04-07 | Improvements in or relating to poppet valve mechanism |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB741437A (en) |
-
1953
- 1953-04-07 GB GB942753A patent/GB741437A/en not_active Expired
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