US446782A - John loftus - Google Patents
John loftus Download PDFInfo
- Publication number
- US446782A US446782A US446782DA US446782A US 446782 A US446782 A US 446782A US 446782D A US446782D A US 446782DA US 446782 A US446782 A US 446782A
- Authority
- US
- United States
- Prior art keywords
- valve
- disk
- casing
- annular
- steam
- 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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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
- 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
-
- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
- F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
-
- 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
-
- 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
- F16K17/06—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 special arrangements for adjusting the opening pressure
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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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/01—Damping of valve members
- F16K47/011—Damping of valve members by means of a dashpot
- F16K47/0111—Damping of valve members by means of a dashpot the valve members comprising a plunger sliding within a fixed dashpot
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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
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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]
- Y10T137/785—With retarder or dashpot
- Y10T137/7852—End of valve moves inside dashpot chamber
-
- 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
- Y10T137/7922—Spring biased
- Y10T137/7925—Piston-type valves
Definitions
- valve proper consists of an annular clear, and exact description of the invention, disk 10, somewhat smaller in diameter than such as will enable others skilled in the art to disk (5, and has two downwardly projecting 10 which it appertains to makeand use the same, annular flanges l2,forming seats which 00- reference being had to the accompanying incide and register with the flanges 8 of the drawings, which form a part of this specifidisk 6. It will thus be seen that there is a cation.
- central space 13 formed between the two My invention relates to improvements in disks and an annular space 14 between d1sk10 I 5 safety-valves for steam-boilers. and the casing.
- the disk 10 is provided with The object of the invention is to provide a a series of holes 11 at one side of the center simple and economical safety-valve which thereof, which open into the casing and also shall be very sensitive in its action, quickly communicate with the space 13.
- Upon the opening and closing under varying boilerupper side of the disk 10 are formed a series pressures.
- the construction is also such that of upwardly-projecting radial wings 15, which fluttering of the valve is prevented, thus renserve to steady and guide the valve in its dering its operation more uniform and eftimovement. cient.
- the numeral 16 designates a coiled spring
- the invention consists in the novel conone end of which bears against a washer 17,
- valve 4 is a plan view of valve with spring in is adjusted to the pressure at which it is deposition. sired the boiler shall blow off. Vhen the 35 Inthe-saiddrawings,the reference-numeral pressure exceeds the safety limit, or that to 1 designates the base of the valve, screwwhich the spring is adjusted, the valve 10 will threaded at 2 and provided with a central be lifted off its seat, allowing the steam to screw-threaded orifice 3 at its lower end, by escape through the annular opening in disk which it is connected with a steam-boiler. 10 into the steam-space 13. Steam will also 40 The numeral 4 designates the valve-casing escape through the space 14; into the casing.
- the base 1 near its upper end is provided at one side than at the other, causing the with an annular shoulder 5 to receive the valve to be tipped or tilted, so that the wings diskG, the rim of which is held between the 15 will bind slightly against the casing, and said shoulder and the bottom of the casing, thus prevent the valve from fluttering.
- valve l laets as a mu filer, which obviates the disagreeable noise incident to blowing oil.
- the valve l laets as apist'on, and by reason of its construction, in eonneetion with the other parts, is very sensitive in its action quickly responding to variations in boiler-pressu re.
- a safety-valve the combination, with the base and easing, 01. a disk having an annular opening and two upwardly-projeeting flanges on each side thereof 'torn'iing valveseats, the valve having corresponding downwardly-projeeting flanges eorrespondi 11;: with the flanges in the disk and having holes or openings at one side of the center and up ⁇ vardlyprojecting radial wings, a screw-rod passing through the end of the easing, and a coiled spring interposed between the valve and said rod, substantially as described.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Description
(No Model!) J. LOFTUS. SAFETY VALVE.
N0. 446,782. Patented Feb. 17, 1891.
I, I M
UNITED STATES PATENT FFICE.
JOHN LOFTUS, OF ALBANY, NEl/V YORK, ASSIGNOR OF ONE-HALF TO EZRA V. SMITH, OF SAME PLACE.
SAFETY-VALVE.
SPECIFICATION forming part of Letters Patent No. 446,782, dated February 17, 1891.
Application filed September 3, 1890. Serial No. 364,339. (No model.)
To all whom it may concern: 7 This disk is'provided with an annular open- Be it known that I, JOHN LOFTUS, accitizen ing 7 and two upwardly-projecting flanges S,
of the United States, andaresidentof Albany, which form seats for the valve, hereinafter in the county of Albany and State of New described.
York, have invented certain new and useful 9 designates ribs which connect the inner Improvements in Safety-Valves; and I do and outer portion of the disk. hereby declare that the following is a full, The valve proper consists of an annular clear, and exact description of the invention, disk 10, somewhat smaller in diameter than such as will enable others skilled in the art to disk (5, and has two downwardly projecting 10 which it appertains to makeand use the same, annular flanges l2,forming seats which 00- reference being had to the accompanying incide and register with the flanges 8 of the drawings, which form a part of this specifidisk 6. It will thus be seen that there is a cation. central space 13 formed between the two My invention relates to improvements in disks and an annular space 14 between d1sk10 I 5 safety-valves for steam-boilers. and the casing. The disk 10 is provided with The object of the invention is to provide a a series of holes 11 at one side of the center simple and economical safety-valve which thereof, which open into the casing and also shall be very sensitive in its action, quickly communicate with the space 13. Upon the opening and closing under varying boilerupper side of the disk 10 are formed a series pressures. The construction is also such that of upwardly-projecting radial wings 15, which fluttering of the valve is prevented, thus renserve to steady and guide the valve in its dering its operation more uniform and eftimovement. cient. The numeral 16 designates a coiled spring,
. The invention consists in the novel conone end of which bears against a washer 17,
50 whereby it is securely retained in position. the steam-pressure has decreased until its l'oree is eounteraeted bv the eoiled spring, the valve will be l'oreed baek to'it (at and elosed.
ll will be seen that the easing aets as a mu filer, which obviates the disagreeable noise incident to blowing oil. The valve l laets as apist'on, and by reason of its construction, in eonneetion with the other parts, is very sensitive in its action quickly responding to variations in boiler-pressu re.
llaving thus described my invention, what I claim is 1. In a safety-valve, the combination, with the base and easing, 01. a disk having an annular opening and two upwardly-projeeting flanges on each side thereof 'torn'iing valveseats, the valve having corresponding downwardly-projeeting flanges eorrespondi 11;: with the flanges in the disk and having holes or openings at one side of the center and up \vardlyprojecting radial wings, a screw-rod passing through the end of the easing, and a coiled spring interposed between the valve and said rod, substantially as described.
L. in a safety-valve, the C(HIllJlIHLtlOll,\Vltll the base having, sermv-threaded upper end andan llllllllitlSllt)lll(l0l,tll(l easing; eonneeted with said base, closed at its top, and provided with a number of eseapeepenings, the disk havingannularopening,upwardly-projeeting annular llangesaind conneet'i lie-ribs, said disk being eontined between the shoulder in the base and the end ot the easing, of the valve having the annular downwardly-extending flanges seated upon the flanges ot the disk, aseries of holes at one side of the eentorthere- 0t and upwardly-projeetinu radial wings,the regulatingserew, the eoiled spring, and the washers againstwhieh the ends of the spring bear, substantially as described.
In testimon that I claim the foregoing as my own I have hereunto at'tixed my signature in presenee of two witnesses.
Wit nessesi:
'lincrrnv G. Ilavns, H. E. (DULY.
Publications (1)
Publication Number | Publication Date |
---|---|
US446782A true US446782A (en) | 1891-02-17 |
Family
ID=2515671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US446782D Expired - Lifetime US446782A (en) | John loftus |
Country Status (1)
Country | Link |
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US (1) | US446782A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986004657A1 (en) * | 1985-02-08 | 1986-08-14 | Dibartolo Ernest A | Direct-acting, differential piston relief valve |
US10444773B1 (en) * | 2015-07-09 | 2019-10-15 | Carroll G. Rowe | Pressure regulating valve with multi-pronged piston assembly |
-
0
- US US446782D patent/US446782A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986004657A1 (en) * | 1985-02-08 | 1986-08-14 | Dibartolo Ernest A | Direct-acting, differential piston relief valve |
US4742846A (en) * | 1985-02-08 | 1988-05-10 | Sun Hydraulics Corp. | Directing-acting, differential piston relief valve |
US10444773B1 (en) * | 2015-07-09 | 2019-10-15 | Carroll G. Rowe | Pressure regulating valve with multi-pronged piston assembly |
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