US149822A - Improvement in steam slide-valves - Google Patents
Improvement in steam slide-valves Download PDFInfo
- Publication number
- US149822A US149822A US149822DA US149822A US 149822 A US149822 A US 149822A US 149822D A US149822D A US 149822DA US 149822 A US149822 A US 149822A
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- US
- United States
- Prior art keywords
- steam
- valve
- improvement
- valves
- chest
- 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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- 238000012856 packing Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 2
- 102100021641 Acetyl-CoA carboxylase 2 Human genes 0.000 description 1
- 101000677540 Homo sapiens Acetyl-CoA carboxylase 2 Proteins 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 description 1
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
- 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
- Fig. 3 is a transverse vertical y section of the same, A A A representing the steam-chest, B B the valve.
- Fig. 2 is a longitudinal representation of metallic packing, similar letters in each of the several figures indicating corresponding parts.
- My invention relates to an improvement in the well-known steam slide-valve, commonly known as the D-valve, which, in height, occupies about one-half of the space of the steamchest, and has bearing upon it the pressure of the steam forced from the boiler within the inclosureof the chest.
- the nature of my invention consists in occupying ⁇ the whole of the chest vertically, with a' combination of spiral springs, metallic or other packing, and an adjustable cap, a part of which is marked a a, as is represented in Figs. 1 and 3, in connection with ⁇ the ordinary D-valve, thus preventing the steam from occupying that part of the chest which exists above the ordinary valve, thereby avoiding the pressure mentioned.
- E, Fig. 3 is a screw-bolt attached to thc top of the valve, and passes through the adjustable cap, marked F, upon which the nut G operates.
- I metallic packing
- J is a spiral spring.
- B, Fig. 1 is an opening in the top of the steam-chest of suflicient extent to allow the nut G, Fig. 1, to move the full extent of the movement of the valve, and for the purpose of giving access to the nut with a wrench whenever occasion requires.
- the packing Fig. 2, consists of four separate pieces of soft metal or other suitable material, formed in the shape of an ordinary carpenters square, which are placed between the cap mentioned and the top of the valve, laid one on top ofthe other, so as to break joint, to the effect that when the steam is admitted into the steam-chest the packing is pressed downward and inward, closing the joints against the shoulder of the cap, (see Fig. 3, marked 3,) and the top of the valve, (see Fig. 3, marked 4,) thereby preventing the steam from pressing upon the Valve. 'lhis packing lies loose when the steam is off, and is kept in place by a number of lugs descending from the adjustable cap, one of which is seen in Fig.l, marked 5, and two in Fig. 3, marked 6 and 7.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Description
1. YouNMAN'.
i Steam Slide-Valves. No.149,822. Pa:en.1edApri|14,1a74.
UNITED STATES PATENT OFFICE.
JACOB YOUNGMAN, OF SUNBURY, PENNSYLVANIA.
IMPROVEMENT IN STEAM SLDEVALVES.
Specification forming part of Letters Patent N0.149,S22, dated April 14, 1874', application iil'ed March 16, 1374.
To all whom it may concern:
Be it known that I, J ACCB YCUNGMAN, of Sunbury, in the county of Northumberland and State of Pennsylvania, have invented a v new and useful Improvement in Steam Slide- Valves, used in locomotives and stationary engines; and I do hereby declare that the following is a full, clear, and exact description located within the steam-chest, the diagraml marked A being a portion ofthe top of the steam-chest, that marked B B being the improved valve. Fig. 3 is a transverse vertical y section of the same, A A A representing the steam-chest, B B the valve. Fig. 2 is a longitudinal representation of metallic packing, similar letters in each of the several figures indicating corresponding parts.
My invention relates to an improvement in the well-known steam slide-valve, commonly known as the D-valve, which, in height, occupies about one-half of the space of the steamchest, and has bearing upon it the pressure of the steam forced from the boiler within the inclosureof the chest.` The nature of my invention consists in occupying` the whole of the chest vertically, with a' combination of spiral springs, metallic or other packing, and an adjustable cap, a part of which is marked a a, as is represented in Figs. 1 and 3, in connection with `the ordinary D-valve, thus preventing the steam from occupying that part of the chest which exists above the ordinary valve, thereby avoiding the pressure mentioned. The purpose of my combination of spring, cap, Ste., is to render the valve elastic and flexible, to overcome the difficulties from the expansion of the metal when heated, which otherwise would cause the fastening of the valve between the top of the steam-chest and the seat, and at the same time renders every joint steamtight, thus preventing the steam from getting on top of the valve. Its flexibility, produced by being thus formed, also allows the cap to yield, which is necessary when air is being pumped into the chest through the motionof the piston-head produced by the impetus of the engine when the steam is shut off.
To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.
E, Fig. 3, is a screw-bolt attached to thc top of the valve, and passes through the adjustable cap, marked F, upon which the nut G operates. I is metallic packing, and J is a spiral spring. "B, Fig. 1, is an opening in the top of the steam-chest of suflicient extent to allow the nut G, Fig. 1, to move the full extent of the movement of the valve, and for the purpose of giving access to the nut with a wrench whenever occasion requires.
The packing, Fig. 2, consists of four separate pieces of soft metal or other suitable material, formed in the shape of an ordinary carpenters square, which are placed between the cap mentioned and the top of the valve, laid one on top ofthe other, so as to break joint, to the effect that when the steam is admitted into the steam-chest the packing is pressed downward and inward, closing the joints against the shoulder of the cap, (see Fig. 3, marked 3,) and the top of the valve, (see Fig. 3, marked 4,) thereby preventing the steam from pressing upon the Valve. 'lhis packing lies loose when the steam is off, and is kept in place by a number of lugs descending from the adjustable cap, one of which is seen in Fig.l, marked 5, and two in Fig. 3, marked 6 and 7.
I claim as my invention- The combination, with the ordinary valve, of a bolt and nut, and a cap, spring, and packing, as described, and an opening in chesthead, constructed as and forthe purpose set forth.
JACOB 'YCUNGMAE
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US149822A true US149822A (en) | 1874-04-14 |
Family
ID=2219235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US149822D Expired - Lifetime US149822A (en) | Improvement in steam slide-valves |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US149822A (en) |
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- US US149822D patent/US149822A/en not_active Expired - Lifetime
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