US154529A - Improvement in balance slide-valves - Google Patents
Improvement in balance slide-valves Download PDFInfo
- Publication number
- US154529A US154529A US154529DA US154529A US 154529 A US154529 A US 154529A US 154529D A US154529D A US 154529DA US 154529 A US154529 A US 154529A
- Authority
- US
- United States
- Prior art keywords
- steam
- valves
- improvement
- balance
- valve
- 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.)
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- 239000002184 metal Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003570 air Substances 0.000 description 2
- 210000000038 chest Anatomy 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 230000001721 combination Effects 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 231100000078 corrosive Toxicity 0.000 description 2
- 231100001010 corrosive Toxicity 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005728 strengthening 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
- 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
- F16K3/188—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 hydraulic forces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Description
A. 1; STEVENS. Balance SIide-VaHes. v .N .154 '52 r Patented Au .25,1874.
UNITED STATES PATENT OFFICE.
ANDREW J.- STEVENS, OF SACRAMENTO, GALlFORNIA.
IMPROVEMENT IN BALANCE SLIDE-VALVES.
Specification forming part of Letters Patent No. 154,529, dated August 25, 1874; application filed January :24, 1874.
To all whom it may concern:
Be it known that I, ANDREW JACKSON STEVENS, of Sacramento, in the county of Sacramento and State of California, have invented new and useful Improvements'on the Balance Slide -Valves 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 annexed drawings, making a part of this specification, in which- Figure 1 represents a vertical longitudinal section of the valve, taken on the line B B of Fig; 2. Fig. 2 is a vertical cross section on the line A A of Fig. 1.
Similar. letters of reference indicate corresponding parts.
D is the main valve, which is similar in construction to the common slide-valve, with the exception of its being carried up higher, and having a strengthening brace or Web, 0?, through its center. It also has a V-shaped groove extending entirely around it near the top, for the purpose of holding the packing ring T, which is made of type-metal or any other non-corrosive metal. E is the-balance yoke or follower, fitted to, and encircling for nearly its whole height, the main.valve D.
This yoke or follower is nicely fitted, but not so snugly but what it can be removed and replaced easily; and a steamtight joint is maintained by the packing-ring T. This balanceyoke or follower works steam-tight against a smooth surface or seat, f, on the inner side of the steam chest cover F, thereby protecting the back of the main valve from'pressure, thus allowing the same to be worked with great ease. O is a passage-way through the steamchest cover, for the purpose of allowing steam to pass freely from end to end of steam-chest. X X are strengthening-webs, for the purpose of preventing seat f from being sprung by pressure. 0 is the steam-chest made in the usual form. L L are bars made of steel or any other metal suitable for the purpose, and are let into the steam-chest at either end sufficiently to hold them securely. These bars are intended to carry the balance-yoke E, and hold the same in steam-tight contact with its seat when the same is not held by steam-pressure. Bars L L are made in pairs, the top one being adjustable, and can be raised and adjusted as it becomes worn on the top surface. H is the steam-passage leading into steam-chest. G is the valve yoke or stem, which is constructed in the usual manner, and encircles the balance-yoke or follower E, thus allowing the main valve to rise easily. W is a valvechamber, fitted on the projection on top of steam-chest cover F. V is a puppet-valve, fitted into passage for the purpose of allowing free passage to the atmosphere of all steam which may find its way to the back of main valve D. The puppet-valveV is also intended to prevent dust, cinders, smoke, or air from passing into the steam-chest through the pipe S and opening 3 N is a set-screw for the purpose of holding valve V to its seat when it is desirable to do so. S is a pipe, which can be led from chamber W to any desired place, for the purpose of conducting leakages from steam-chest.
Having thus described my invention, I claim as improvements, and desire to secure by Letters Patent- The bars L L and balance-yoke E, in com bination with a valve and seat f, substantially as and for the purpose described.
ANDREW JACKSON STEVENS.
Witnesses:
J OHN RAFFERTY, BEN. SMITH.
Publications (1)
Publication Number | Publication Date |
---|---|
US154529A true US154529A (en) | 1874-08-25 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US154529D Expired - Lifetime US154529A (en) | Improvement in balance slide-valves |
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US (1) | US154529A (en) |
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- US US154529D patent/US154529A/en not_active Expired - Lifetime
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