GB154875A - Improvements in and relating to the valve-gear of internal combustion engines - Google Patents
Improvements in and relating to the valve-gear of internal combustion enginesInfo
- Publication number
- GB154875A GB154875A GB16901/20A GB1690120A GB154875A GB 154875 A GB154875 A GB 154875A GB 16901/20 A GB16901/20 A GB 16901/20A GB 1690120 A GB1690120 A GB 1690120A GB 154875 A GB154875 A GB 154875A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cams
- valve
- cross
- bar
- modification
- 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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
154,875. F.I.A.T. Fabbrica Italiana Automobili Torino, Soc. Anon. Dec. 3, 1919, [Convention date]. Valve-gear.-A beat valve 1 is actuated in both directions by a pair of cams 6, 7 coaxial with the stem, engaging rollers 5 on the ends of a cross-bar 4, which opens the valve by engaging the shoulder 8, and closes it by compressing the spring 2. In the form shown, the two cams are rotated in opposite directions from a single countershaft through bevel and spur gearing, but in a modification the two cams are mounted on a single sleeve and rotate together. The cams have inclined faces and run on ball-bearings, and the cam-bowls run onball and roller bearings as shown. The cams for adjacent valves are driven one from another either directly or through intermediate gears. In the modification in which the two cams rotate. together, the cross-bar actuates two or more valves simultaneously, and a leaf spring is used in place of two springs such as 2. In another modification, a leaf spring is used with a single valve, the cross-bar wording over two guiding-spindles.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT154875X | 1919-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB154875A true GB154875A (en) | 1921-06-02 |
Family
ID=11148041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16901/20A Expired GB154875A (en) | 1919-12-03 | 1920-06-22 | Improvements in and relating to the valve-gear of internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB154875A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2184783A (en) * | 1985-12-14 | 1987-07-01 | Stidworthy Frederick M | Poppet valve gear |
-
1920
- 1920-06-22 GB GB16901/20A patent/GB154875A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2184783A (en) * | 1985-12-14 | 1987-07-01 | Stidworthy Frederick M | Poppet valve gear |
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