US200718A - Improvement in balanced valves for steam-engines - Google Patents
Improvement in balanced valves for steam-engines Download PDFInfo
- Publication number
- US200718A US200718A US200718DA US200718A US 200718 A US200718 A US 200718A US 200718D A US200718D A US 200718DA US 200718 A US200718 A US 200718A
- Authority
- US
- United States
- Prior art keywords
- valve
- steam
- engines
- improvement
- ring
- 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
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- 229920001195 polyisoprene Polymers 0.000 description 4
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
- F16K3/18—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
- F16K3/184—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members by means of cams
- F16K3/186—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members by means of cams by means of cams of wedge from
Definitions
- the object of this invention is to produce a slide-valve which will reduce the friction on the valve-seatin g and valve-face to a minimum, and yet will allow of a considerable amount of Wear without leakage.
- Figure 1 shows four quarter views of plan of valve and valve-chest, the two upper quarters showing'the back of the chest-the lower quarters, first, the same with valve-chest cover removed, and, secondly, with the cover and valve both removed, showing valve-seat and ports.
- Figure 2 is a crosssection.
- A is the valve-spindle, attached to the valve in any convenient manner
- B the slide-valve
- O valve-face
- D exhaust-port
- E steam-ports
- F tapped hole, made for convenience and filled with plug when in use
- G G springs held to valve by adjustable screws H H, keeping ring J and packing of india-rubber K against equilibriumring L. This latter works against the smooth face of the back plate.
- the back portion P of the valve is brought up square, and forms a sort of box, planed on its sides to accurately fit the sides of equilibrium-ring L; or the two may be cylindrical, and bored or turned.
- springs G and ring J are used. These have a constant tendency to keep the ring L against its face, while, by placing the india-rubber packing K between the ring J and the equilibrinm-rin g L, all chance of steam forcing its way between ring L and box P are removed.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Sliding Valves (AREA)
Description
G. A. HAWORTH. Balanced Valve for Steam-Engines.
Patented Feb. 26,1878.
Iiz'i'rzesses: XLZZ W. J
N.FETEH5. PNOTO-LITHOGRAPHEH. WASHINGTON u UNITED STATES PATENT OFFICE.
GEORGE A. HAWORTH, OF LIVERPOOL, ENGLAND.
IMPROVEMENT IN BALANCED VALVES FOR STEAM-ENGINES.
Specification forming part of Letters Patent No. 200,718, dated February 26, 1878; application filed February 6, 1878.
To all whom 'it may concern:
Be it known that I, GEORGE AMBROSE HAWORTH, of Liverpool, in the county of Lancaster, in the Kingdom of England, have invented new and useful Improvements in Slide-Valves for Steam-Engines, which improvements are fully set forth in the accompanying specification, reference being had to the accompanying drawings.
The object of this invention is to produce a slide-valve which will reduce the friction on the valve-seatin g and valve-face to a minimum, and yet will allow of a considerable amount of Wear without leakage.
It is best described by aid of the accompanying drawings, in which Figure 1 shows four quarter views of plan of valve and valve-chest, the two upper quarters showing'the back of the chest-the lower quarters, first, the same with valve-chest cover removed, and, secondly, with the cover and valve both removed, showing valve-seat and ports. Fig. 2 is a crosssection.
In the drawings, A is the valve-spindle, attached to the valve in any convenient manner; B, the slide-valve; O, valve-face; D, exhaust-port; E, steam-ports; F, tapped hole, made for convenience and filled with plug when in use; G G, springs held to valve by adjustable screws H H, keeping ring J and packing of india-rubber K against equilibriumring L. This latter works against the smooth face of the back plate. M of steam-chest, both surfaces being accurately planed or worked up true.
The back portion P of the valve is brought up square, and forms a sort of box, planed on its sides to accurately fit the sides of equilibrium-ring L; or the two may be cylindrical, and bored or turned.
To keep the ringLtight up to its face, springs G and ring J are used. These have a constant tendency to keep the ring L against its face, while, by placing the india-rubber packing K between the ring J and the equilibrinm-rin g L, all chance of steam forcing its way between ring L and box P are removed.
By means of the orifice N, continually open to the atmosphere, anytrifling leakage between ring Landits seat escapes. The screws H H can be adjusted without the removal of the steamchest cover.
I am aware that the use of an equilibriumring on the back of a valve, in combination with an intermediate packing and springs and adjusting-screws, is old, and I make no claim thereto. 7
I claim as my invention- In combination with the steam-chest having the opening N in its back, the slide-valve B, provided with the back flange P, equilibrium ring L, ring-packing J, springs G G, bearing under the equilibrium-ring, and screws H H, mounted in the springs and exposed on the back, as shown.
GEO. A. HAWORTH.
Witnesses FRANCIS T. MADDOCK, WM. P. THoMPsoN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US200718A true US200718A (en) | 1878-02-26 |
Family
ID=2270124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US200718D Expired - Lifetime US200718A (en) | Improvement in balanced valves for steam-engines |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US200718A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100016057A1 (en) * | 2008-02-20 | 2010-01-21 | Aristocrat Technologies Australia Pty. Ltd. | Method of gaming, a gaming system and a game controller |
-
0
- US US200718D patent/US200718A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100016057A1 (en) * | 2008-02-20 | 2010-01-21 | Aristocrat Technologies Australia Pty. Ltd. | Method of gaming, a gaming system and a game controller |
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