GB268602A - Improvements in mechanism for the operation of valves - Google Patents

Improvements in mechanism for the operation of valves

Info

Publication number
GB268602A
GB268602A GB1577326A GB1577326A GB268602A GB 268602 A GB268602 A GB 268602A GB 1577326 A GB1577326 A GB 1577326A GB 1577326 A GB1577326 A GB 1577326A GB 268602 A GB268602 A GB 268602A
Authority
GB
United Kingdom
Prior art keywords
valve
cam
actuating
spring
rocker
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
GB1577326A
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.)
THOMAS MANFRED BOOTH
WILLIAM PAGET SMYTH
Original Assignee
THOMAS MANFRED BOOTH
WILLIAM PAGET SMYTH
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 THOMAS MANFRED BOOTH, WILLIAM PAGET SMYTH filed Critical THOMAS MANFRED BOOTH
Priority to GB1577326A priority Critical patent/GB268602A/en
Publication of GB268602A publication Critical patent/GB268602A/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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/30—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of positively opened and closed valves, i.e. desmodromic valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

268,602. Booth, J. H., Sidwell, F. A., Smyth, W. P., and Booth, T., M. June 23, 1926. Actuating - mechanism. - In cam-actuated valve gear, the valve-actuating cam is supplemented by a second cam which, while not effecting positive closing of the valve, acts on a spring carried by the valve tappet or rocker in such a way as to overcome the inertia forces arising in the valve gear and maintain pressure contact between such tappet or rocker and the valve-actuating cam during the actuation of the valve. The second cam may be designed to cause a constant spring pressure during the entire cycle of lifted and seated periods of the valve. Fig. 1 shows a cam 6 actuating a valve through a rocker 9, which is formed with a third arm 17 carrying a spring 18 acting on a slide 16 bearing on a second cam 15. In a modification, the slide 16 is replaced by another lever arm pivoted separately on the axis 10. Fig. 7 shows the spring 62 arranged between tappets 56 and 59 acted on by cams 57 and 64 respectively.
GB1577326A 1926-06-23 1926-06-23 Improvements in mechanism for the operation of valves Expired GB268602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1577326A GB268602A (en) 1926-06-23 1926-06-23 Improvements in mechanism for the operation of valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1577326A GB268602A (en) 1926-06-23 1926-06-23 Improvements in mechanism for the operation of valves

Publications (1)

Publication Number Publication Date
GB268602A true GB268602A (en) 1927-04-07

Family

ID=10065220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1577326A Expired GB268602A (en) 1926-06-23 1926-06-23 Improvements in mechanism for the operation of valves

Country Status (1)

Country Link
GB (1) GB268602A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2988071A (en) * 1955-09-26 1961-06-13 Gen Motors Corp Concentric valve internal combustion engine
WO1987003645A1 (en) * 1985-12-14 1987-06-18 Stidworthy Frederick M Delayed tension valves
WO1996037688A1 (en) * 1995-05-23 1996-11-28 Csaba Gyimesi Variable valve control for internal combustion engines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2988071A (en) * 1955-09-26 1961-06-13 Gen Motors Corp Concentric valve internal combustion engine
WO1987003645A1 (en) * 1985-12-14 1987-06-18 Stidworthy Frederick M Delayed tension valves
WO1996037688A1 (en) * 1995-05-23 1996-11-28 Csaba Gyimesi Variable valve control for internal combustion engines

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