US19933A - Thkottle-valve - Google Patents
Thkottle-valve Download PDFInfo
- Publication number
- US19933A US19933A US19933DA US19933A US 19933 A US19933 A US 19933A US 19933D A US19933D A US 19933DA US 19933 A US19933 A US 19933A
- Authority
- US
- United States
- Prior art keywords
- valve
- steam
- seat
- chamber
- ports
- 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 4
- 230000000875 corresponding Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 210000003414 Extremities Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
Images
Classifications
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
- F16K47/045—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member and the closure member being rotatable
-
- 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
- Y10T137/86718—Dividing into parallel flow paths with recombining
- Y10T137/86743—Rotary
- Y10T137/86751—Plug
Definitions
- Figure 1 is a vertical section parallel with the axis.
- Fig. 2 is a vertical section on the line a a of Fig. 1.
- Fig. 3 is a view of the valve detached.
- A is a spherical chamber, containing the valve, B. It is divided by the partition, C G, into two compartments, D, and E; one for the admission of steam to the valve, and the other for the passage of the steam from the valve ports to the steam chest.
- the latter is annular and surrounds the valve seat, as seen at E, E, Fig. 2.
- the valve is in the form of a hollow frustum, being supported on its axis F, by four arms or partitions, b, which serve to strengthen it against any unequal pressure that it may receive.
- the valve-seat, G consists of a shell surrounding the valve, and fitted closely to it. It is joined to the partition C, at one extremity, and to the wall or case A, at the other. In it are four recesses or passages cZ (Z eX- tending from the chamber D, and uniting in a single chamber H, at the end of the valve.
- the valve stem or spindle is packed and supported in the usual manner having an adjusting screw at each end, (2 e, to regulate its pressure on the seat.
- I is the lever for connecting it with the governor.
- the valve has four oblong ports or openings at opposite sides, f f. Corresponding openings, 9 g, are provided in the seat at intermediate distances between the recesses (Z.
- the steam enters from the boiler into the chamber D, filling the interior of the valve, and also the passages (Z, and chamber H. As the ports are opened it passes into the annular passage E, surrounding the valve seat, and thence to the steam chest. The course of the steam, both in its passage through the valve and through the surrounding chamber, is indicated by the arrows.
- the adjoining surfaces of the valve and seat are ground so as to constitute a steamtight oint, and the adjustment of steam, in and upon the valve, is such as to reduce friction to a minimum rate, and thus produce what may be justly termed a balanced valve.
- the pressure of the steam on a considerable portion of the exterior surface .of the valve by means of the passages and chamber, cl and H, tends to overcome friction, and make it sensitive in a high degree, while the interior arrangement is such that the force of the steam in escaping by one port is counter-balanced by the same force in the opposite positions of the four different ports.
- the supporting partitions, Z) receive the back pressure of the steam, and throw it upon the center, and form in fact four equal and distinct passages for the steam to the ports.
- the openings, f, in the valve are made slightly oblique to those of the seat, in order to open gradually for the passage of steam, and the considerable area of the four ports,and their united action, produces an extreme degree of sensibility, and a very slight turn of the valve varies the opening greatly. So rapid and perfect is its operation that it is diflicult to detect a difference in the revolutions when suddenly changing from light to heavy labor of the engine, and vice versa.
Description
UNITED STATES PATENT oEEIoE.
T. S. LA FRANCE, OF ELMIRA, NEW YORK.
THROTTLE-VALVE.
Specification of Letters Patent No. 19,983, dated April 13, 1858.
To all whom it may concern:
Be it known that I, TRUCKSON S. LA FRANCE, of Elmira, in the county of Chemung and State of New York, have invented a new and Improved Throttle or Governor Valve for Steam-Engines; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, making part of this specification, and to the letters of reference marked thereon.
Figure 1 is a vertical section parallel with the axis. Fig. 2 is a vertical section on the line a a of Fig. 1. Fig. 3 is a view of the valve detached.
A is a spherical chamber, containing the valve, B. It is divided by the partition, C G, into two compartments, D, and E; one for the admission of steam to the valve, and the other for the passage of the steam from the valve ports to the steam chest. The latter is annular and surrounds the valve seat, as seen at E, E, Fig. 2.
The valve is in the form of a hollow frustum, being supported on its axis F, by four arms or partitions, b, which serve to strengthen it against any unequal pressure that it may receive.
The valve-seat, G, consists of a shell surrounding the valve, and fitted closely to it. It is joined to the partition C, at one extremity, and to the wall or case A, at the other. In it are four recesses or passages cZ (Z eX- tending from the chamber D, and uniting in a single chamber H, at the end of the valve. The valve stem or spindle is packed and supported in the usual manner having an adjusting screw at each end, (2 e, to regulate its pressure on the seat. I is the lever for connecting it with the governor.
The valve has four oblong ports or openings at opposite sides, f f. Corresponding openings, 9 g, are provided in the seat at intermediate distances between the recesses (Z. The steam enters from the boiler into the chamber D, filling the interior of the valve, and also the passages (Z, and chamber H. As the ports are opened it passes into the annular passage E, surrounding the valve seat, and thence to the steam chest. The course of the steam, both in its passage through the valve and through the surrounding chamber, is indicated by the arrows.
The adjoining surfaces of the valve and seat are ground so as to constitute a steamtight oint, and the adjustment of steam, in and upon the valve, is such as to reduce friction to a minimum rate, and thus produce what may be justly termed a balanced valve. The pressure of the steam on a considerable portion of the exterior surface .of the valve by means of the passages and chamber, cl and H, tends to overcome friction, and make it sensitive in a high degree, while the interior arrangement is such that the force of the steam in escaping by one port is counter-balanced by the same force in the opposite positions of the four different ports. The supporting partitions, Z), receive the back pressure of the steam, and throw it upon the center, and form in fact four equal and distinct passages for the steam to the ports. The openings, f, in the valve are made slightly oblique to those of the seat, in order to open gradually for the passage of steam, and the considerable area of the four ports,and their united action, produces an extreme degree of sensibility, and a very slight turn of the valve varies the opening greatly. So rapid and perfect is its operation that it is diflicult to detect a difference in the revolutions when suddenly changing from light to heavy labor of the engine, and vice versa.
I am aware that hollow conical valves have before been used and such alone I do not claim, nor do I claim the employment of recesses formed in the periphery for the admission of steam for the purpose of balancing the valve when at rest, as such arrangement does not produce the efiect claimed for my invention, but- What I claim and desire to secure by Letters Patent, is
The series of chambers (Z cl, in the valve seat, in combination with corresponding chambers or passages in the valve-shell B, and the bracing and binding partitions, b b the whole arranged and operating substantially as herein set forth.
TRUCKSON S. LA FRANCE.
Witnesses:
JOHN CoLMAN, J. FRASER.
Publications (1)
Publication Number | Publication Date |
---|---|
US19933A true US19933A (en) | 1858-04-13 |
Family
ID=2084456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US19933D Expired - Lifetime US19933A (en) | Thkottle-valve |
Country Status (1)
Country | Link |
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US (1) | US19933A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11566714B2 (en) * | 2020-01-15 | 2023-01-31 | Flowserve Management Company | Fluid flow control devices and related systems and methods |
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0
- US US19933D patent/US19933A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11566714B2 (en) * | 2020-01-15 | 2023-01-31 | Flowserve Management Company | Fluid flow control devices and related systems and methods |
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