US193558A - Improvement in safety-valves - Google Patents
Improvement in safety-valves Download PDFInfo
- Publication number
- US193558A US193558A US193558DA US193558A US 193558 A US193558 A US 193558A US 193558D A US193558D A US 193558DA US 193558 A US193558 A US 193558A
- Authority
- US
- United States
- Prior art keywords
- valve
- safety
- valves
- spring
- improvement
- 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
- 230000004075 alteration Effects 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
- 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
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- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S137/00—Fluid handling
- Y10S137/904—Cushion check valves
-
- 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
Definitions
- THOMAS SHAW OF PHILADELPHIA, PENNSYLVANIA.
- My invention consists in the application of slight frictional resistance to the valve, in the manner and for the purpose as hereinafter described.
- the object of the invention is to prevent that disagreeable hammering sound that frequently occurs in the class of safety-valves known as pop-valves.
- valve-seat &c.
- A is the main body of the valve provided with a screw-thread at O, for attachment to boiler, and with screw-thread at B for attachment to usual spring portion of valve-rigging.
- D is the central opening for the passage of steam to the valve proper G, which is constructed onthe pop-valve principle, having the enlarged face J above the valve-seat I, and is provided with the usual guide-wings E and with the concave top H, for the reception of the cone or lower portion of the ordinary spring.
- (Not shown.) F is a groove, cut in Wings E for the inserting of a wire ring arranged to spring against the walls of the body of the valve A with just enough force to create a slight but constant friction, which I have found sufficient to arrest all hammering or pounding action occasioned by the rapid vibrations of valve, which vibrations are induced by the rapid successive spurts of steam against the enlarged face area of popvalves.
- a safety-valve provided with a spring, substantially as described, whereby the hammering of the valve incident upon the escape of high-pressure steam is prevented.
- a valve having its guide-wings recessed to receive a spring, as and for the purpose set forth.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Description
T. SHAW. SAFETY-VALVE.
No. 193,558. Patented July 24,1877.
'INVENTOR UNITED STATES PATENT QTTTGE.
THOMAS SHAW, OF PHILADELPHIA, PENNSYLVANIA.
IMPROVEM ENT IN SAFETY-VALVES.
Specification forming part of Letters Patent No. 193,558, dated July '24, 1877; application filed July 3, 1877.
To all whom it may concern:
Be it known that I, THOMAS SHAW, of the city and county of Philadelphia, Pennsylvania, have invented a new and Improved Mode ot'Arresting, Vibrating, and Pounding Motion of Safety-Valves; and I hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing, and to the letters of reference marked thereon.
My invention consists in the application of slight frictional resistance to the valve, in the manner and for the purpose as hereinafter described.
The object of the invention is to prevent that disagreeable hammering sound that frequently occurs in the class of safety-valves known as pop-valves.
In order to enable others to use and practice my invention, I will proceed to describe its construction and operation.
On reference to the accompanying drawing, which forms part of the specification, the sketch represents a vertical section through center of valve and valve-seat, &c., of which A is the main body of the valve provided with a screw-thread at O, for attachment to boiler, and with screw-thread at B for attachment to usual spring portion of valve-rigging. D is the central opening for the passage of steam to the valve proper G, which is constructed onthe pop-valve principle, having the enlarged face J above the valve-seat I, and is provided with the usual guide-wings E and with the concave top H, for the reception of the cone or lower portion of the ordinary spring. (Not shown.) F is a groove, cut in Wings E for the inserting of a wire ring arranged to spring against the walls of the body of the valve A with just enough force to create a slight but constant friction, which I have found sufficient to arrest all hammering or pounding action occasioned by the rapid vibrations of valve, which vibrations are induced by the rapid successive spurts of steam against the enlarged face area of popvalves.
It will be evident that the spring-action of the wire insures a constant application of frictional resistance, however slight, and that this force may be variously applied to different portions of the valve without any alteration in the result. I therefore do not wish to confine myself to the exact shape or location of the resisting-spring medium for the purpose described; but
What I do claim, and desire to secure by Letters Patent, is
1. A safety-valve provided with a spring, substantially as described, whereby the hammering of the valve incident upon the escape of high-pressure steam is prevented.
2.. In a safety-valve, a spring surrounding the guide-Wings of the valve, as and for the purpose set forth.
3. A valve having its guide-wings recessed to receive a spring, as and for the purpose set forth.
4. The combination, in a safety-valve, of the casing A, valve G,- having recesses in the guide-win gs, and a spring placed within such recess, as and for the purpose set forth.
- THOMAS SHAW. Witnesses:
ELIAS J. SHAW, WM. B. HUGHES.
Publications (1)
Publication Number | Publication Date |
---|---|
US193558A true US193558A (en) | 1877-07-24 |
Family
ID=2262964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US193558D Expired - Lifetime US193558A (en) | Improvement in safety-valves |
Country Status (1)
Country | Link |
---|---|
US (1) | US193558A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3072143A (en) * | 1960-09-15 | 1963-01-08 | Tescom Corp | Check valve |
-
0
- US US193558D patent/US193558A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3072143A (en) * | 1960-09-15 | 1963-01-08 | Tescom Corp | Check valve |
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