US129991A - Improvement in safety-valves - Google Patents

Improvement in safety-valves Download PDF

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US129991A
US129991A US129991DA US129991A US 129991 A US129991 A US 129991A US 129991D A US129991D A US 129991DA US 129991 A US129991 A US 129991A
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Prior art keywords
safety
valve
valves
improvement
steam
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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
    • F16K17/0406—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 in the form of balls
    • 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
    • Y10T137/7905—Plural biasing means

Definitions

  • the drawing represents a vertical central section of our improved safety-valve.
  • This invention has for its object to so arrange a safety-valve for steam-boilers that it will be sensitive to the action of the steam, and not liable to become obstructed.
  • This invention consists in providingthe valve-chamber with escape-,steam ports and witha cham-l bered extension, in which is arranged a spiral spring that acts through the medium of a collar and piston-rod to partly hold the piston against the pressure of steam in the boiler, as will be hereinafter described.
  • a in the drawing represents the valve-chamber, of cylindrical form and secured in avertical position upon a steam-boiler.
  • c is the steampipe leading fromthe lower part of the chamb is the steam-escape pipe projecting from the chamber A at a somewhat greater height than the pipe a.
  • B is the valve, made inshape of a piston, which fitsthe chamber A with exactness.
  • a stem which is weighted on top.
  • said stem In an upper chamber, e, through which the stern Id also extends, said stem carries two shoulders, f and g, the lower being fast, the upper loose on it, ⁇ and'a coiled spring, h, between the two.,
  • the spring h together with the weight tion top, serves to so far lower the valve that the b, and alsothrough j l b.
  • the valve will be adapted to resist greater' steam-pressure.
  • valvechamber A provided with the chambered extension e, pipes a b, and parts'j l, all constructed as shown and described, for

Description

M.SMART 8L T. W. GAYNOR.
Improvement in Safety-Valves'.
vPatented July 30,1872,
v ber A to the engine.
UNITED STATES PATENT OFFICE.
MICHAEL SMART AND THOMAS W. lGrAYNOR, OF NEW YORK, N.k Y.
IMPROVEMENT IN SAFETY-VALVES.
Specification forming part of Letters Patent No. 129,991, dated July 30, 1872.
Specification describing anew and Improved Safety-Valve, invented by MICHAEL SMART andA THoMAs W. GAYNoR, of New York city, in the county and State of 4New York.
The drawing represents a vertical central section of our improved safety-valve.
Similar letters of reference indicate correspondin g parts. v
This invention has for its object to so arrange a safety-valve for steam-boilers that it will be sensitive to the action of the steam, and not liable to become obstructed. This invention consists in providingthe valve-chamber with escape-,steam ports and witha cham-l bered extension, in which is arranged a spiral spring that acts through the medium of a collar and piston-rod to partly hold the piston against the pressure of steam in the boiler, as will be hereinafter described.
A in the drawing represents the valve-chamber, of cylindrical form and secured in avertical position upon a steam-boiler. c is the steampipe leading fromthe lower part of the chamb is the steam-escape pipe projecting from the chamber A at a somewhat greater height than the pipe a.. B is the valve, made inshape of a piston, which fitsthe chamber A with exactness. It is suspended from a stem, d, which is weighted on top.- In an upper chamber, e, through which the stern Id also extends, said stem carries two shoulders, f and g, the lower being fast, the upper loose on it,`and'a coiled spring, h, between the two., The spring h, together with the weight tion top, serves to so far lower the valve that the b, and alsothrough j l b. By screwing down the top m of the chamber e, lowering the loose shoulderf, and contracting the spring h, or by adding to the weight on the top of the stem,
`the valve will be adapted to resist greater' steam-pressure. By making a lan ged opening for the pipe which conveys the steam from the boiler to the engine a part of the safety-valve chamber, we save cutting the usual hole in the boiler for that purpose. l
Having thus described our invention, we claim as new and desire to secure by Letters Patentg Y 1. The valvechamber A provided with the chambered extension e, pipes a b, and parts'j l, all constructed as shown and described, for
the purpose specified.
2. yIn combination with the foregoing, the solid piston B, piston-rod d, collars g s, and spring h, all constructed in the manner and for the purpose specified.
MICHAEL SMART. THOMAS W. GAYNOR.
Witnesses:
T. B. MosHER, W. A. GRAHAM.
US129991D Improvement in safety-valves Expired - Lifetime US129991A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697599A (en) * 1952-04-24 1954-12-21 Hammel Dahl Company Valve operating mechanism
US4595033A (en) * 1983-09-30 1986-06-17 Dresser Industries, Inc. Low pressure high temperature safety valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697599A (en) * 1952-04-24 1954-12-21 Hammel Dahl Company Valve operating mechanism
US4595033A (en) * 1983-09-30 1986-06-17 Dresser Industries, Inc. Low pressure high temperature safety valve

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