US177564A - Improvement in safety-valves - Google Patents
Improvement in safety-valves Download PDFInfo
- Publication number
- US177564A US177564A US177564DA US177564A US 177564 A US177564 A US 177564A US 177564D A US177564D A US 177564DA US 177564 A US177564 A US 177564A
- Authority
- US
- United States
- Prior art keywords
- valve
- safety
- valves
- improvement
- pressure
- 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
- 238000010276 construction Methods 0.000 description 12
- 210000000088 Lip Anatomy 0.000 description 10
- 102000018062 Taperin Human genes 0.000 description 2
- 108050007169 Taperin Proteins 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 230000000630 rising Effects 0.000 description 2
- 235000013533 rum Nutrition 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0433—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with vibration preventing means
-
- 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
- Y10T137/6851—With casing, support, protector or static constructional installations
- Y10T137/7043—Guards and shields
-
- 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
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7738—Pop valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Description
R. RUDD.
SAFETY VALVE.
Patented MaylG, 1876.
] Un r'rnn STATES- PATENT Gnrrcn.
ROBERT RUDD, 0F ALEXANDRIA, VIRGINIA, ASSIGNOR on ONE-HALF HIS RIGHT TO JAMES E. WADDEY, OF SAME PLACE.
IMPROVEMENT IN SAFETY-VALVES.
Specification forming part of Letters Patent No. 177,564, dated May 1 6, 1876; application filed April13, 1876.
To all whom it may concern: A
Be it known that I, ROBERT Rum), of Alexandria, in the county of Alex'andriaand State of Virginia, have invented a new and useful Improvement in Safety-Valves; and I do here by declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters'of reference marked thereonr This invention consists mainly, first, in the special construction of the valve proper, it being provided with a projecting flange or lip located above its seat, by means of which a pocket or chamber is formed when the valve is seated, so that when the valve is lifted the pressure of the escaping steam is employed to raise it still higher, in order that the boiler may be rapidly relieved and the valve quickly shut down second, in the combination, with this peculiarly-constructed valve, of a valvecup having inclined sides, the construction being such that by the continued movement of the valve when lifted the area of the discharge-opening is constantly increased; and,
third, in the special construction of certain and use my invention, 1 will now proceed to describe fully its construction and manner of operation.
A represents the constructed. generally of any proper form, and be provided with the usual or other proper means for attaching it to the boiler. It is essentially provided, however, with a seat, a, a
recess, a, and the inclinedor tapering surface a as shown.
B represents the valve, which may be constructed generally of any proper form, but is essentially provided with the seat I) and recess 1), formed by the projecting lip or flange b as shown. When the valve rests upon its seat in valve-cup, which may be.
the cup the pocket or chamber as is formed below the lip or flange, as shown.
0 represents the pressure-spring, arranged in the usual well-known or other proper manner. I
The operation of the valve is as follows: When the pressure in the boiler exceeds the pressure of the spring the valve is, of course, lifted from its seat, and the steam, consequently, escaping through the opening, and filling the pocket or chamber or, acts expansively and directly upon the lip 0 and aids in lifting the valve still higher, so that the area of the discharge-opening is increased.
It will be understood that when the ordinary valve is used the pressure of the steam simply raises the same a short distance, the resistance of the spring increasing as the valve is raised, and that, consequently, a small discharge-opening is furnished for the-delivery of the steam, and hence the boiler is slowly relieved. When my improved valve is used, on the other hand, the escaping steam itself exerts a pressure, and, in connection with the normal boiler-pressure, raises the valve sufficiently high to relieve the boiler with great rapidity.
It will be. understood that, in consequence of the inclined surface of the cup, the area of the discharge-opening is rapidly increased as the valve is lifted, the valve rising in a vertical plane, and consequently leaving a space of constantly-increasing width in its upward movement. 7
The locking device will now be described: D D represent studs or bolts connecting the cup with the spring -bar E, in the usual well-known manner. 0 0 represent the adjusting-nuts, by means of which the amount of pressure exerted by the spring is determined. F represents a bar, provided at its ends with cups or sockets ff, adapted-to fit over and inclose the adjusting-nuts, as shown. GG represent headed pins extending through the spring-bar E and locking-bar E, which are provided above with openings adapted to receive the sealing-wire g, as shown.
The operation will be readily understood. The nuts having been properly adjusted, the
cap bar is put in p sition and secured by the pins and sealing-Wire, so that no change can be made without the certainty ofdetection.
The construction of the valve as a whole is exceedingly simple, and yet it is very effective in its action.
Having thus fullyde'scrihed my invention, what I claim as new, and desire to secure by Letters Patent, is-
The valve B, having the projecting lip or flange N, in combination with the valve-cup,
having the'cylindrical portion a and taperin ,9;
portion M, the construction being such that the valve must move some distance to clear the cylindrical portion of the valve-cup, as described.
This specification signed and witnessed this 6th day of April, 187
ROBERT RUDD. Witnesses:
WM. FLEMING, CHARLES E. STUART.
Publications (1)
Publication Number | Publication Date |
---|---|
US177564A true US177564A (en) | 1876-05-16 |
Family
ID=2246971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US177564D Expired - Lifetime US177564A (en) | Improvement in safety-valves |
Country Status (1)
Country | Link |
---|---|
US (1) | US177564A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2661016A (en) * | 1949-11-04 | 1953-12-01 | Cons Brass Company | Relief valve of the poppet type |
US3203246A (en) * | 1962-04-13 | 1965-08-31 | Casco Products Corp | Blow-off valve and pressure indicator for fire extinguishers |
US4498493A (en) * | 1981-06-24 | 1985-02-12 | Stant Inc. | Pressure valve assembly for a fuel tank filler neck cap |
US5251664A (en) * | 1990-02-19 | 1993-10-12 | Saab Automobile Aktiebolag | Quiet check valve for pulsating flow |
US5351562A (en) * | 1992-01-24 | 1994-10-04 | Keystone Railway Equipment Co., Inc. | Hydraulic--pneumatic cushioning device with pressure indicator |
US20100111844A1 (en) * | 2008-10-31 | 2010-05-06 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Compositions and methods for therapeutic delivery with frozen particles |
US10508754B2 (en) * | 2015-09-28 | 2019-12-17 | Robert Bosch Gmbh | Valve device for throttling a pressure medium flow, and damping device for damping pressure pulsations |
-
0
- US US177564D patent/US177564A/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2661016A (en) * | 1949-11-04 | 1953-12-01 | Cons Brass Company | Relief valve of the poppet type |
US3203246A (en) * | 1962-04-13 | 1965-08-31 | Casco Products Corp | Blow-off valve and pressure indicator for fire extinguishers |
US4498493A (en) * | 1981-06-24 | 1985-02-12 | Stant Inc. | Pressure valve assembly for a fuel tank filler neck cap |
US5251664A (en) * | 1990-02-19 | 1993-10-12 | Saab Automobile Aktiebolag | Quiet check valve for pulsating flow |
US5351562A (en) * | 1992-01-24 | 1994-10-04 | Keystone Railway Equipment Co., Inc. | Hydraulic--pneumatic cushioning device with pressure indicator |
US20100111844A1 (en) * | 2008-10-31 | 2010-05-06 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Compositions and methods for therapeutic delivery with frozen particles |
US10508754B2 (en) * | 2015-09-28 | 2019-12-17 | Robert Bosch Gmbh | Valve device for throttling a pressure medium flow, and damping device for damping pressure pulsations |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US177564A (en) | Improvement in safety-valves | |
US320380A (en) | Check valve for steam boilers | |
US146873A (en) | Improvement in safety-valves | |
US217745A (en) | Improvement in safety-valves | |
US476668A (en) | kuhns | |
US37795A (en) | Improvement in steam-boilers | |
US359389A (en) | Muffler | |
US455476A (en) | Safety-valve | |
US776834A (en) | Safety-valve and blow-off. | |
US1023866A (en) | Damper. | |
US253622A (en) | pearson | |
US39583A (en) | Improved variable exhaust for locomotives | |
US995436A (en) | Cam for stamp-mills. | |
US151027A (en) | Improvement in safe ty-valves | |
US494970A (en) | Half to john a | |
US291009A (en) | Spring for piston-heads | |
US729271A (en) | Gas-governor. | |
US447523A (en) | Safety-valve | |
US120055A (en) | Improvement in plow-colters | |
US39852A (en) | Improvement in steam-pumps | |
US177164A (en) | Improvement in drop-lifters | |
US81326A (en) | John ashcroft | |
US510954A (en) | Beall | |
US268082A (en) | Safety-valve | |
US197703A (en) | Improvement in harrow-teeth |