US129138A - Smprovement in safety-valves for steam-boilers - Google Patents

Smprovement in safety-valves for steam-boilers Download PDF

Info

Publication number
US129138A
US129138A US129138DA US129138A US 129138 A US129138 A US 129138A US 129138D A US129138D A US 129138DA US 129138 A US129138 A US 129138A
Authority
US
United States
Prior art keywords
weight
safety
steam
valves
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.)
Expired - Lifetime
Application number
Publication date
Application granted granted Critical
Publication of US129138A publication Critical patent/US129138A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
    • F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
    • F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug
    • 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
    • Y10T137/1624—Destructible or deformable element controlled
    • Y10T137/1797—Heat destructible or fusible
    • Y10T137/1804—With second sensing 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7908—Weight biased
    • Y10T137/7921—Weight coaxial with valve

Definitions

  • the present invention is a modication of the mechanism that can be employed for accomplishing the same result. 1n our present improvement a portion of the weight that resists the movement of the safety-valve is discharged or dropped away from the main weight, so asl to render that weight lighter and the maximum pressure less, but not to otherwise interfere with the action ofthe valve.
  • Figure l is a vertical section of said safety-valve
  • Fig-2 is a sectional plan at the line x x.
  • valve-seat a is at the end of a suitable tube or connection, b, to the boiler, and around this seat is a casing, c, with a removable cover and an alarm-whistle, d, which may also be inclosed in a perforated case; and the parts should be made so as to be secured by a bar, locked to its place by the inspector after the gauge has been set at the determined pressure.
  • '.Lhe valve f is at the lower end of the compound weight g, which is constructed so that when the same is raised by the maximum pressure a portion of the weight will be dropped or discharged.
  • a fusible plug is employed, that will melt at the temperature of the steam resulting from the maximum pressure, so that the valve will ordinarily open and close when the pressure is above or below the lowest or normal pressure; but when a high or dangerous pressure is reached the fusible plug will be melted, and the whole or a portion of the contents of the weight g will be dropped or discharged, and there will be less resisting weight, and a sure indication be obtained that the highest pressure has been exceeded.
  • the same effect is produced when a latch or a slide is employed to retain a portion of the weight and allow the same to drop or disengage when the full extent of motion is given to the parts in consequence of the high pressure of steam.
  • a cock or gate may be provided for withdrawing the shot, mercury, or other material that may run out of the hollow weight g and where a latch or gate is made use of the parts are to be constructed so that they can be reconnected or replaced when the cap of the case c is taken olf.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Safety Valves (AREA)

Description

H. S. JE-WELL & F. STEELE.
Improvement in Safety/Valves for Steam-Boilers.
No. 129,138. rarterptedmlymJaz STATES PATENT OFFICE."
HERBERT S. JEWELL AND FERDINAND STEELE, OF BROOKLYN, NEW YORK.
sMPRovEMEN-r IN ysAFlz'rv-v/Irvss FOR sTEAM-BouERs.
Specification forming part of Letters Patent No. 129,138, dated July 16, 1872.
To all whom t may concern:
Beit known that we, HERBERT S. JEWELL and FERDINAND STEELE, of Brooklyn, in the county of Kings and State of New York', have invented an Improvement in Safety-Valves and Alarms; and the following is declared to be a correct description thereof.
In Letters Patent N o. 123,076 a valve is shown in which a portion of the weight is suspended when more than the maximum pressure has been exceeded, thereby preventing the engine working at its entire power, but not entirely crippling the same and rendering it inoperative, as in those cases where the safetyvalve is held open.
The present invention is a modication of the mechanism that can be employed for accomplishing the same result. 1n our present improvement a portion of the weight that resists the movement of the safety-valve is discharged or dropped away from the main weight, so asl to render that weight lighter and the maximum pressure less, but not to otherwise interfere with the action ofthe valve.
In the drawing, Figure lis a vertical section of said safety-valve, and Fig-2 is a sectional plan at the line x x.
The valve-seat a is at the end of a suitable tube or connection, b, to the boiler, and around this seat is a casing, c, with a removable cover and an alarm-whistle, d, which may also be inclosed in a perforated case; and the parts should be made so as to be secured by a bar, locked to its place by the inspector after the gauge has been set at the determined pressure. '.Lhe valve f is at the lower end of the compound weight g, which is constructed so that when the same is raised by the maximum pressure a portion of the weight will be dropped or discharged. I have shown the weight hollow, into which shot, mercury, or other suitable material is inserted, to furnish the required weight in proportion to the area of the valve and the pressure at which the valve is to open. By this construction the pari are easily adjusted to suit varying pressures. Near the lower end of the hollow weight g an opening, t', is shown, that is of a character to allow the shot or other contents to run out when open; but this opening ordinarily is closed. In some cases a fusible plug is employed, that will melt at the temperature of the steam resulting from the maximum pressure, so that the valve will ordinarily open and close when the pressure is above or below the lowest or normal pressure; but when a high or dangerous pressure is reached the fusible plug will be melted, and the whole or a portion of the contents of the weight g will be dropped or discharged, and there will be less resisting weight, and a sure indication be obtained that the highest pressure has been exceeded. The same effect is produced when a latch or a slide is employed to retain a portion of the weight and allow the same to drop or disengage when the full extent of motion is given to the parts in consequence of the high pressure of steam.
A cock or gate may be provided for withdrawing the shot, mercury, or other material that may run out of the hollow weight g and where a latch or gate is made use of the parts are to be constructed so that they can be reconnected or replaced when the cap of the case c is taken olf.
We claim as our invention- The safety-valve made with a compound weight sliding within a case and provided with means for allowing a portion of such weight to drop when the maximum pressure has been exceeded, substantially as and for-the purpose Set forth.
Signed by us this 11th day of March, A. D.
HERBERT S. JEWELL. f FERDINAND STEELE. Witnesses:
GEO. T. PINCKNEY, CRAs. H. SMITH.
US129138D Smprovement in safety-valves for steam-boilers Expired - Lifetime US129138A (en)

Publications (1)

Publication Number Publication Date
US129138A true US129138A (en) 1872-07-16

Family

ID=2198556

Family Applications (1)

Application Number Title Priority Date Filing Date
US129138D Expired - Lifetime US129138A (en) Smprovement in safety-valves for steam-boilers

Country Status (1)

Country Link
US (1) US129138A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520771A (en) * 1949-01-22 1950-08-29 Smith Corp A O Diaphragm valve
US2692613A (en) * 1949-06-27 1954-10-26 American Machine & Metals Multiple weighted relief valve
US2916147A (en) * 1958-10-06 1959-12-08 Milton Sevack Ball guide and screen for deep well jet pump
US5129110A (en) * 1990-07-16 1992-07-14 Richter Robert A Selectable toilet-water-level flushing system
US5392811A (en) * 1993-11-02 1995-02-28 Caterpillar Inc. High pressure fuel system valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520771A (en) * 1949-01-22 1950-08-29 Smith Corp A O Diaphragm valve
US2692613A (en) * 1949-06-27 1954-10-26 American Machine & Metals Multiple weighted relief valve
US2916147A (en) * 1958-10-06 1959-12-08 Milton Sevack Ball guide and screen for deep well jet pump
US5129110A (en) * 1990-07-16 1992-07-14 Richter Robert A Selectable toilet-water-level flushing system
US5392811A (en) * 1993-11-02 1995-02-28 Caterpillar Inc. High pressure fuel system valve

Similar Documents

Publication Publication Date Title
US129138A (en) Smprovement in safety-valves for steam-boilers
US285955A (en) Thomas p
US524393A (en) george s
US3955589A (en) Fluid isolating valve
US56409A (en) Improvement in steam safety-valves
US308479A (en) Safety-valve
US383314A (en) Half to horace j
US540419A (en) Safety device for boilers
US123546A (en) Improvement in lock safety-valves for steam-boilers
US318748A (en) Enventoe
US582445A (en) Safety-valve
US54768A (en) Improvement in safety-valves
US601923A (en) Fluid-pressure regulator
US404684A (en) colven
US190711A (en) Improvement in safety-valves
US145534A (en) Improvement in safety-valves for steam-boilers
US143644A (en) Improvement in combined indicators and safety-valves
US108345A (en) Improvement in safety-valves
US123176A (en) Improvement in safety-valves
US850626A (en) Safety-valve.
US988175A (en) Check-valve.
US549987A (en) Safety-valve
US718475A (en) Safety attachment for cans or vessels.
US383226A (en) Automatic pressure-regulator and safety-valve
US61872A (en) Improvement in look-up safety valves