US109996A - Improvement in safety-valves - Google Patents

Improvement in safety-valves Download PDF

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Publication number
US109996A
US109996A US109996DA US109996A US 109996 A US109996 A US 109996A US 109996D A US109996D A US 109996DA US 109996 A US109996 A US 109996A
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Prior art keywords
valve
valves
safety
improvement
spring
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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
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • 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
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • F16K15/065—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring spring pulling the closure member against the seat
    • 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
    • Y10T137/7923—With means to protect spring from fluid

Definitions

  • This invention relates to'a new and useful improvement in satiety-valves for locomotives and other steamboilers, foe adding security to such boilers by guard ing against an over-pressure of steam;
  • Figure 2 is a sectional top vienytakeu on the line x a: of fig. 1. 7
  • 0' is n flange which surrounds the valve-seat.
  • E' is a spiral spring.
  • F is a collar on the lower end of the valve-stem, aspen which the spring rests.
  • G. is a pocket or cylindrical casing which contains thespring, the upper end of which, H, is a portion of the valve-scat.
  • J represents the wings of the valre, ⁇ "hich fit into the neck K of the casing.
  • L is a shoulder at the lower endof the neck K
  • M is a yoke on the top of the spring which bears against the shoulder L and receives the upward pressui-c of the spring.
  • the top portion of the valve-stem is provided with a screw-tln'ead.
  • N is a screw-nut on the valve-stem, the lower side ofwhich is globular in form and fits a globular cavity in the top of the valve, so that the nut and the valve form'a hall-and-socket joint. This allows the rod to oscillate without affecting the position of the valve on its seat.
  • the flange 0 surrounds a short cylinder, 0, the upper end of which forms a portion of the valve-seat, as seen at P in the drawing. "The flange O is attached to the shell of the boiler, the casing and cylinder 0 being within the boiler and subject to the pressure of the steam.
  • S represents orifices through the top of the valve
  • T T are flanged nuts on the screws U U,.the flanges of which lap over onto'the valve to limit the upward movement of the valve, and as a safeguard in case of accidents.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Description

J. ARMSTRONG. SAFETY VALVE. No. 109,996. Patented Dec. 13, 1870.
acx m .iiii 9 1 a M I TM ml m w m m m m tan JASPER ARMSTRONG, OF" BROOKFIEL'D. MISSOURI.
Letters Patent No. 109,996, dated December 13, 1870.
IMPROVEMENT IN SAFETV-VALVES.
l'heBchodule referred to in the" Lott-n Patent and maldng put of the name.
To all whom it may concern Be it known that I, J ASPER Amts'rnoxe, of Brook.- field, in the county of Linn and State of Missouri, have invented a new and useful Improvement -in Safety-Valve; and I do hereby declare that the following is a. full, clear, and exact description thereof,
which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawingforining part of this specification.
This invention relates to'a new and useful improvement in satiety-valves for locomotives and other steamboilers, foe adding security to such boilers by guard ing against an over-pressure of steam; and
It consists in the arrangement and construction of a. puppet-valve, with the. parts connected therewith; as hereinafter more fully described.
In the accompanying drawing- Figure 1 represents a vertical longitudinal section of the valve with its case and the parts connected therewith.
Figure 2 is a sectional top vienytakeu on the line x a: of fig. 1. 7
Similar letters of reference indicate corresponding parts. A. is the valve, which works upon the stem B.
0' is n flange which surrounds the valve-seat.
E'is a spiral spring.
F is a collar on the lower end of the valve-stem, aspen which the spring rests.
G. is a pocket or cylindrical casing which contains thespring, the upper end of which, H, is a portion of the valve-scat.
J represents the wings of the valre, \\"hich fit into the neck K of the casing.
L is a shoulder at the lower endof the neck K, and M is a yoke on the top of the spring which bears against the shoulder L and receives the upward pressui-c of the spring.
'The orifice for the valve-stein, through the valve, is tapering, 'so as to prevent binding.
The top portion of the valve-stem is provided with a screw-tln'ead.
N is a screw-nut on the valve-stem, the lower side ofwhich is globular in form and fits a globular cavity in the top of the valve, so that the nut and the valve form'a hall-and-socket joint. This allows the rod to oscillate without affecting the position of the valve on its seat.
The flange 0 surrounds a short cylinder, 0, the upper end of which forms a portion of the valve-seat, as seen at P in the drawing. "The flange O is attached to the shell of the boiler, the casing and cylinder 0 being within the boiler and subject to the pressure of the steam. I
- Between the neck K of the casing and the cylinder 0 there is an annular space, B, through which -the steam in the boiler has access to the face of the valve.
S represents orifices through the top of the valve,
for the escape of steam when the pressure within theboiler raises the valve.
It will be seen that the pressure of the steam is exerted on the valve in opposition to the force and strength of the spring, and that the spring is compressed to any required degree of tension by means of the nut N.
T T are flanged nuts on the screws U U,.the flanges of which lap over onto'the valve to limit the upward movement of the valve, and as a safeguard in case of accidents.
The advantages of this mode of attaching and operating the valve and the pinion for preventing the unseating of the'valve, by rneans of a ball-ar1d-socket connection, are many, and must be obvious to all who Witnesses W. D. HICKs,
D. A. Ronmsox.
US109996D Improvement in safety-valves Expired - Lifetime US109996A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040246718A1 (en) * 2003-06-09 2004-12-09 Pang Hong Fan Rope light with flashing portions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040246718A1 (en) * 2003-06-09 2004-12-09 Pang Hong Fan Rope light with flashing portions

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