US200728A - Improvement in rotary valves - Google Patents
Improvement in rotary valves Download PDFInfo
- Publication number
- US200728A US200728A US200728DA US200728A US 200728 A US200728 A US 200728A US 200728D A US200728D A US 200728DA US 200728 A US200728 A US 200728A
- Authority
- US
- United States
- Prior art keywords
- valve
- improvement
- rotary valves
- passages
- chamber
- 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 - Lifetime
Links
- 210000000038 chest Anatomy 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/86638—Rotary valve
- Y10T137/86646—Plug type
Definitions
- Figure 1 is a horizontal section taken on line .90 w in Fig. 2.
- Fig. 2 is a vertical trans i erse section of the valve, taken on line y y in Similar letters of reference indicate corresponding parts.
- My invention relates to the class of enginevalves known as cylinder or plug valves; and it consists in an arrangement of steampassages in the valve, and ports and passages in the valve-casing, by means of which the pressure on the valve is equalized or counterbalanced, so as to relieve it from friction.
- A is the valve-casing, having the passages a, which communicate with the ends of the cylinder, and intersect the tapering valve-chamber b diametrically.
- passages d e communicating with the valve-chamber, and arranged diametrically opposite in relation to the valve and at right angles to the passage a.
- the valve B consists in a hollow slightlytapered plug, having the spindle f, which extends through a stuffing-box, g, at the side of the valve-casing, and has attached to it the lever h, which is connected with the valve-operating eccentric.
- the valve is provided with openings k on opposite sides, which communicate with the chamber in the valve, and are arranged in relation to the cavities i in such a manner that when steam is admitted to one end of the cylinder through the supply-port e, cavity i, and passages c a, the steam escapes from the opposite end of the cylinder through the passage on and opening it to the chamber 1 in the valve, whence it passes through the wide opening 112, which is equally distant from the opening is to the exhaust -port at in the valve-casin g.
- the valve and valve-casin g are symmetrical in the arrangement of their ports and passages.
- valve By means of my improvement the valve is, to a great extent, balanced, and the disadvantages of steam-room in the valve chest or casing are avoided.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
- Taps Or Cocks (AREA)
Description
wimssns:
D. W. JONES. Rotary Valves.
Patented Feb. 26, 1878.
ATTORNEYS.
UNITED STATES PATENT OFFICE.
DAVID W. JONES, OF POOAHONTAS, ARKANSAS.
IMPROVEMENT IN ROTARY VALVES.
Specification forming part of Letters Patent No. 200,728, dated February 26, 1878; application filed December 8, 1877.
To all whom it may concern:
Be it known that I, DAVID W. JONES, of Pocahontas, in the county of Randolph and State of Arkansas, have invented a new and Improved Steam-Engine Valve, of which the following is a specification:
Figure 1 is a horizontal section taken on line .90 w in Fig. 2. Fig. 2 is a vertical trans i erse section of the valve, taken on line y y in Similar letters of reference indicate corresponding parts.
My invention relates to the class of enginevalves known as cylinder or plug valves; and it consists in an arrangement of steampassages in the valve, and ports and passages in the valve-casing, by means of which the pressure on the valve is equalized or counterbalanced, so as to relieve it from friction.
In the drawing, A is the valve-casing, having the passages a, which communicate with the ends of the cylinder, and intersect the tapering valve-chamber b diametrically. There is a curved passage, 0, on each side of the valve-chamber, which communicates with it and with the passage at. There are also passages d e, communicating with the valve-chamber, and arranged diametrically opposite in relation to the valve and at right angles to the passage a.
The valve B consists in a hollow slightlytapered plug, having the spindle f, which extends through a stuffing-box, g, at the side of the valve-casing, and has attached to it the lever h, which is connected with the valve-operating eccentric.
In the lower side of the valve there are two cavities, i, which are of suflicient width to bring the supply-passage 6 into communication with the passage 0 on either side of the valve as it is oscillated.
By means of these cavities and the arrangement of the passages c a steam is admitted alternately to opposite ends of the cylinder. The valve is provided with openings k on opposite sides, which communicate with the chamber in the valve, and are arranged in relation to the cavities i in such a manner that when steam is admitted to one end of the cylinder through the supply-port e, cavity i, and passages c a, the steam escapes from the opposite end of the cylinder through the passage on and opening it to the chamber 1 in the valve, whence it passes through the wide opening 112, which is equally distant from the opening is to the exhaust -port at in the valve-casin g. The valve and valve-casin g are symmetrical in the arrangement of their ports and passages.
By means of my improvement the valve is, to a great extent, balanced, and the disadvantages of steam-room in the valve chest or casing are avoided.
Having thus described my invention, I claim as new and desire to secure by Letters Patcut-- The combination of the rotary valve B, having the central chamber 1, the openings k m, communicating with said chamber and the surface cavities i, with the casing A, having the connected passages a c, the supply-port e, and exhaust-port d, all constructed and relatively arranged as herein shown, to operate in the manner set forth.
DAVID WILLIAM JONES.
Witnesses:
C. G. ELDER, ABRAM WEAVER.
Publications (1)
Publication Number | Publication Date |
---|---|
US200728A true US200728A (en) | 1878-02-26 |
Family
ID=2270134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US200728D Expired - Lifetime US200728A (en) | Improvement in rotary valves |
Country Status (1)
Country | Link |
---|---|
US (1) | US200728A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040221901A1 (en) * | 2003-05-09 | 2004-11-11 | Hsin-Chi Chen | Airflow controlling mechanism |
-
0
- US US200728D patent/US200728A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040221901A1 (en) * | 2003-05-09 | 2004-11-11 | Hsin-Chi Chen | Airflow controlling mechanism |
US7059350B2 (en) * | 2003-05-09 | 2006-06-13 | Hsin-Chi Chen | Airflow controlling mechanism |
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