GB190103761A - Improvements in Valve Gear for Fluid Pressure Engines. - Google Patents

Improvements in Valve Gear for Fluid Pressure Engines.

Info

Publication number
GB190103761A
GB190103761A GB190103761DA GB190103761A GB 190103761 A GB190103761 A GB 190103761A GB 190103761D A GB190103761D A GB 190103761DA GB 190103761 A GB190103761 A GB 190103761A
Authority
GB
United Kingdom
Prior art keywords
valve
gear
eccentric
pivot
dwell
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
Inventor
James Thompson Marshall
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190103761A publication Critical patent/GB190103761A/en
Expired legal-status Critical Current

Links

Abstract

3761. Marshall, J. T. Feb. 21. Valve gear.-Relates to linkage valve gear designed to ensure that the valve shall open quickly to the full extent, then dwell or remain stationary for a time, and then suddenly close, so as to avoid wire-drawing, and shall also, when linked up, not reduce the exhaust area so as to cause back-pressure. Fig. 2 shows a form of the gear as applied to a locomotive. The valve is actuated, through an adjustable rod 14, by a slot link 11, which oscillates on a pivot 10. This pivot is carried by a slide reciprocated in guides 6 by an eccentric 2 on the crank shaft with a throw equal to the lap and lead of the valve. The link is rocked on its pivot by an arm 26 connected by a rod 23 to a rocking lever 20 actuated by an eccentric 3 placed with its centre about 90‹ in advance of the eccentric 2. The opening and closing of the valve are produced by the added movements due to the two eccentrics, while the dwell is produced by their differential effect. The application of the invention to a variableexpansion non-reversing stationary engine is shown in the Specification, and also the application to an engine without variable expansion. In the latter case, a simple bent lever is substituted for the slot link 11 and its arm 26. The gear may be used for Corliss as well as slide valves.
GB190103761D 1901-02-21 1901-02-21 Improvements in Valve Gear for Fluid Pressure Engines. Expired GB190103761A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190103761T 1901-02-21

Publications (1)

Publication Number Publication Date
GB190103761A true GB190103761A (en) 1901-07-06

Family

ID=32420976

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190103761D Expired GB190103761A (en) 1901-02-21 1901-02-21 Improvements in Valve Gear for Fluid Pressure Engines.

Country Status (1)

Country Link
GB (1) GB190103761A (en)

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