US116084A - Improvement in safety-valves - Google Patents

Improvement in safety-valves Download PDF

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US116084A
US116084A US116084DA US116084A US 116084 A US116084 A US 116084A US 116084D A US116084D A US 116084DA US 116084 A US116084 A US 116084A
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valve
seat
safety
valves
improvement
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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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • 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
    • Y10T137/7909—Valve body is the weight
    • Y10T137/7913—Guided head

Definitions

  • My invention relates to the construction of a valve in which, when used as a safety-valve, the difference of pressure in opening and closing is more reduced than in a valve with a flat or V-seat, and with which the liability to stick or to leakisless than with any other stop or safety-valve.
  • the drawing is a vertical section of my valve in the state when opening.
  • A is the valve, resting with its face on the surface of B.
  • the face a is made so as to have very little more area than the inner area at a, having a sharp edge, and giving a seat of only a hairs breadth.
  • the recess from a to b, as shown, is sufficient for the largest size of a valve.
  • the sharp edge of the seat at a makes this valve less liable to stick than a valve with a flat or a V-seat;
  • a valve with a so-called V-seat will be jammed in by the expansion and contraction of the metal, but my improved valve will not. It often occurs with a V-seat of a stop-valve that, when used for water-connections, a foreign substance is j amined in between the V-seat whereas with my improved seat it will not occur so often.
  • a valve with a V-seat or a flat seat will differ to the amount of several pounds of pressure in opening and closing when used with about fifty pounds of pressure; whereas my valve closes nearly at the same pressure at which itopens, the diflerence between the inner area and area of face a being very little. Therecess from a to I) gives more play to the escaping steam when the valve opens, and forms the sharp-edge seat, which makes this valve more efficient to close when used as a safetyvalve.
  • a stop or safetyvalve having a seat as described above will have less adherence to its rest, and will not be jammed in by expansion and contraction of metal; and the difi'erence of pressure between opening and closing of a safety-valve with a seat, as described above, will be much less than in any other safetyvalve ever constructed.
  • To the above-described valve has to be attached the regular lever, with weight or spring when to be used as a safety-valve, or the valve-stem with screw when to be used as a stop-valve.
  • valve A substantially as and for the purpose hereinbefore set forth.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Description

UNITED STATES PATENT OFFICE.
ADOLPHUS F. W. NEYNABER, OF PHILADELPHIA, PENNSYLVANIA.
IMPROVEMENT IN SAFETY-VALVES.
Specification forming part of Letters Patent No. 116,084, dated June 20, 1871; antedated June 17, 1871.
To all whom it may concern:
Be it known that I,A1)oLPHUs F. W. NEYNA BER, of the city and county of Philadelphia, in the State ofPennsylvania, have invented a certain Improvement in Valves, of which the following is a specification:
' My invention relates to the construction of a valve in which, when used as a safety-valve, the difference of pressure in opening and closing is more reduced than in a valve with a flat or V-seat, and with which the liability to stick or to leakisless than with any other stop or safety-valve.
The drawing is a vertical section of my valve in the state when opening.
A is the valve, resting with its face on the surface of B. The face a is made so as to have very little more area than the inner area at a, having a sharp edge, and giving a seat of only a hairs breadth. The recess from a to b, as shown, is sufficient for the largest size of a valve. The sharp edge of the seat at a makes this valve less liable to stick than a valve with a flat or a V-seat; v
A valve with a so-called V-seat will be jammed in by the expansion and contraction of the metal, but my improved valve will not. It often occurs with a V-seat of a stop-valve that, when used for water-connections, a foreign substance is j amined in between the V-seat whereas with my improved seat it will not occur so often. A valve with a V-seat or a flat seat will differ to the amount of several pounds of pressure in opening and closing when used with about fifty pounds of pressure; whereas my valve closes nearly at the same pressure at which itopens, the diflerence between the inner area and area of face a being very little. Therecess from a to I) gives more play to the escaping steam when the valve opens, and forms the sharp-edge seat, which makes this valve more efficient to close when used as a safetyvalve.
Thus it will be seen that a stop or safetyvalve having a seat as described above will have less adherence to its rest, and will not be jammed in by expansion and contraction of metal; and the difi'erence of pressure between opening and closing of a safety-valve with a seat, as described above, will be much less than in any other safetyvalve ever constructed. To the above-described valvehas to be attached the regular lever, with weight or spring when to be used as a safety-valve, or the valve-stem with screw when to be used as a stop-valve.
I claim as my invention- The construction of valve A, substantially as and for the purpose hereinbefore set forth.
A. F. W. NEYNABER.
Witnesses:
WM. BRAUN, H. M. WILDER.
US116084D Improvement in safety-valves Expired - Lifetime US116084A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568026A (en) * 1945-03-28 1951-09-18 Gulf Research Development Co Relief and control valve
US2628632A (en) * 1946-04-09 1953-02-17 Manning Maxwell & Moore Inc Safety valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568026A (en) * 1945-03-28 1951-09-18 Gulf Research Development Co Relief and control valve
US2628632A (en) * 1946-04-09 1953-02-17 Manning Maxwell & Moore Inc Safety valve

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