US86346A - Improvement in steam safety-valves - Google Patents
Improvement in steam safety-valves Download PDFInfo
- Publication number
- US86346A US86346A US86346DA US86346A US 86346 A US86346 A US 86346A US 86346D A US86346D A US 86346DA US 86346 A US86346 A US 86346A
- Authority
- US
- United States
- Prior art keywords
- steam
- valve
- valves
- improvement
- case
- 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
- 238000007664 blowing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000003137 locomotive Effects 0.000 description 2
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 description 2
- 101700082413 tant Proteins 0.000 description 2
Images
Classifications
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- 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
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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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7738—Pop valves
- Y10T137/7741—Pop pressure reactor in branched released path
- Y10T137/7742—Separate relief valves or valves for each branch
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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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7904—Reciprocating valves
- Y10T137/7908—Weight biased
Definitions
- This invention relating to an improvement in steam safety-valves, consists in the constructions-and arrangement of the valve, its sustaining-dome and enclosingcase, in such manner that, as the valve (which is in direct communication with the steam in the boiler) is raised from its, seat, the steam will escape through the dome, without contact with the mechanism which operates said valve, or access to its enclosing-case.
- the enclosing-case not only protects said mechanism irom dirt or derangement, but prevents access to the same by any other than the person in charge, being secured toY the dome by lock and key, and at the same time the engineer can operate the valve from without,4
- valve-mech anism whenever he thinks necessary to blowofi' steam, or prevent clogging of the valve, and by unlocking the case, the same may be removed for inspection of the valve-mech anism, when the steam is on, or at any. desired moment.
- This dome receives the cap E, which is screwed into the dome at e, saidcap answering the purpose of a guide for'the valve-spindle d, as well asto confine the steam when the valve is raised, so that the steam shall escape around the guard F, which prevent-s access to the valve from without, and through the exit-opening G ofthe dome B, without access to the interior of the case C. l
- the done B also receives the valve D, whose seat D is screwed into the domeatI I, and also the standard K, which, together with the fulcrum L, serrated leverM, and weight N, holds the valve D on its seat D'.
- P is a,crank-sliaft, passing through the case C, and carrying a cam, p, and crank, q, by means of which the engineer operates the valve for blowing oii' steam, 85o.
- the enclosing-case made in two sections, c c', the same being held firmly together by the bolt R, which passes through both sections, having a head, s, nut, t, and a hole, u, .for reception of the lock w, thus holding the sections firmly together, the case C, which they comprise, enclosing the dome, valve, and valvemechanism, therebylpreventing access of the steam to the interior of the case, as well as preventing access to locking and removal of the case.
- the lever M is serrated atmfor adjustment andre-v stay-piece, 0, which holds the weight, when adjusted,v
Description
ahmed tant' @time @fitte we massaaew "mf JOHN ASHCROFT, OF NEW YGR'K, N. Y.
Letters Patent No. 86,346, dated Februa/ry 2, 1869.
MPROVEMENT IN STEAM SAFETY-VALVES.
To all whom 'it 'may conce/ru:
Be it known that I, JOHN AsHcRoF'r, of the city, county, and State of New York, have invented a new and useful Improvement in Steam Safety-Valves for the boilers oi" locomotives and other steam-engines; and do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making part of this specification, of which- Figure 1 represents a sectional elevation;
Figure 2, a horizontal section on line :v :c of iig. 1;
Figure 3, a horizontal section on line y y; and
Figure 4, a similar section on line z z of said figure.
This invention, relating to an improvement in steam safety-valves, consists in the constructions-and arrangement of the valve, its sustaining-dome and enclosingcase, in such manner that, as the valve (which is in direct communication with the steam in the boiler) is raised from its, seat, the steam will escape through the dome, without contact with the mechanism which operates said valve, or access to its enclosing-case.
The enclosing-case not only protects said mechanism irom dirt or derangement, but prevents access to the same by any other than the person in charge, being secured toY the dome by lock and key, and at the same time the engineer can operate the valve from without,4
whenever he thinks necessary to blowofi' steam, or prevent clogging of the valve, and by unlocking the case, the same may be removed for inspection of the valve-mech anism, when the steam is on, or at any. desired moment.
Having described the nature of my invention, I wil`l now describe its construction and operation, by reference to the drawings, in which- A indicates a portion of the shell of a steam-boiler, on which is bolted the.dome B, which sustains the enclosing-case U and valve D, as shown.
This dome receives the cap E, which is screwed into the dome at e, saidcap answering the purpose of a guide for'the valve-spindle d, as well asto confine the steam when the valve is raised, so that the steam shall escape around the guard F, which prevent-s access to the valve from without, and through the exit-opening G ofthe dome B, without access to the interior of the case C. l
The done B also receives the valve D, whose seat D is screwed into the domeatI I, and also the standard K, which, together with the fulcrum L, serrated leverM, and weight N, holds the valve D on its seat D'.
tention ofthe weight N, said weight having a tooth, n, which iits into one ofthe serrations of the lever, and a steadily in place.
P is a,crank-sliaft, passing through the case C, and carrying a cam, p, and crank, q, by means of which the engineer operates the valve for blowing oii' steam, 85o.
is the enclosing-case, made in two sections, c c', the same being held firmly together by the bolt R, which passes through both sections, having a head, s, nut, t, and a hole, u, .for reception of the lock w, thus holding the sections firmly together, the case C, which they comprise, enclosing the dome, valve, and valvemechanism, therebylpreventing access of the steam to the interior of the case, as well as preventing access to locking and removal of the case.
Having described, my invention,
What I claim, and desire to secure by Letters Patent, ls-
1. The arrangement of the dome B, screw-cap E, guard F, with the valves D D', when said parts are constructed as shown and described.
2. The arrangement of the lever M, weight N, staypiece 0, and crank-shaft P, as shown and described.
In testimony whereof, I have hereunto set my signature, this 14th day of October, A. D. 1868.
JOHN ASHGROFT.
Witnesses:
ARTHUR B. WILLIAMs, A. NEILL.
The lever M is serrated atmfor adjustment andre-v stay-piece, 0, which holds the weight, when adjusted,v
the valve or valvefmechanism otherwise than by un-
Publications (1)
Publication Number | Publication Date |
---|---|
US86346A true US86346A (en) | 1869-02-02 |
Family
ID=2155835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US86346D Expired - Lifetime US86346A (en) | Improvement in steam safety-valves |
Country Status (1)
Country | Link |
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US (1) | US86346A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120273209A1 (en) * | 2011-04-27 | 2012-11-01 | Bp Exploration Operating Company Limited | Weghted pressure relief valve |
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0
- US US86346D patent/US86346A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120273209A1 (en) * | 2011-04-27 | 2012-11-01 | Bp Exploration Operating Company Limited | Weghted pressure relief valve |
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