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US90874A - Improvement in safety-valves - Google Patents

Improvement in safety-valves Download PDF

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Publication number
US90874A
US90874A US90874DA US90874A US 90874 A US90874 A US 90874A US 90874D A US90874D A US 90874DA US 90874 A US90874 A US 90874A
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Prior art keywords
safety
valve
lever
valves
piston
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Expired - Lifetime
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0433Safety 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
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7781With separate connected fluid reactor surface
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7837Direct response valves [i.e., check valve type]
    • Y10T137/7904Reciprocating valves
    • Y10T137/7905Plural biasing means

Definitions

  • PatentedJune 1 1869.
  • This invention relates to a pressure-gauge safetyvalve, which is intended for steam and other euginery.
  • the letter A designates a piston, which isfitted into' acylinder, B, so that it moves freely therein, without, however, allowing any. water or steam to escape.
  • the cylinder B communicates, by pipes G D, with the water-chamber, or steam-generator, the pressure of which is to be gauged, and the piston A connects by a rod, E, with a lever, F.
  • said piston is made in the. form of a trunk, and the rod E-is connected to it :2; hinged joint a, as shown in the drawing.
  • 1e lever F has its fulcrum on a pivot, b, secured the pipe 4]), Iead'mgto the water-chamber or steam-- genemtor.
  • the safety-valve is made in the ordinary manner, with a conical 'face fitting into a correspondin seat, and, if said safety-valve is raised by the pres re of steam or water, the surplus steam or water escapes I through the blow-oft or discharge-pipe O.
  • the lever K is loaded with a-weight, which is movable on the same, so that the pressure exerted on. the safety-valve can be regulated to suit circumstances.
  • the spring-balance J is so adjusted that the register is connected to the lever F, and the index to the lever K, so that, when the lever F is raised by the action of the steam on the piston A, the register slides up under the index, and the amount ofprcssure acting on the piston is indicated.
  • the safety-valves generally used in hydraulic presses are cylindrical plugs, with a-couical face fitting into a corresponding conical seat, and the passage leading from this seat to the water-chamber is quite narrow, so that the area of the safety-valve exposed to the pressure of the water is quite small.
  • the safety-v" lve binds or sticks only very little in its seat, the'pressure of the u ateris unable to lift the valve, and the water-chamber bursts.
  • the safety-valve can be loaded dorm to the-desired amount, and if the pressure has reached the desired limit, the safety valve is entirely relieved of all weight, and it is free to blow oil.
  • the piston offers a comparatively large area to the pressure of steam, audit is not liable tostick.
  • the spring-balance exerts a strain on the lever K, audit thisstrain has reached the desired degree, as indicated on the dial of thebalauce, the safety-valve opens and blows off.

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

Description

T. R OWE.
SAFETY VALVE.
No 90,874. PatentedJune 1, 1869.
72771 as s 65.
new one,
THOMAS ROWE, OFNE'W YORK,- N. Y.
Letters Patent No. 90,874, dated June 1,1869.
IIEPROVEMENT IN SAFETY-VALVES.
The Schedule referred to in these Letters Patent and making part of the lame.
To all whom it may comma:
Be it known that I, THOMAS Rows, of the city,
county, and State of New York, have invented a new and improved Combination Pressure-Gauge and Safety-Valve; and I do hereby dec are the following to be a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being bad to the accompanying drawing, forming part of this specification, which drawing represents a longitudinal section of'this invention. p
This invention relates to a pressure-gauge safetyvalve, which is intended for steam and other euginery. The letter A designates a piston, which isfitted into' acylinder, B, so that it moves freely therein, without, however, allowing any. water or steam to escape.
The cylinder B communicates, by pipes G D, with the water-chamber, or steam-generator, the pressure of which is to be gauged, and the piston A connects by a rod, E, with a lever, F.
To insure freedom of motion, said piston is made in the. form of a trunk, and the rod E-is connected to it :2; hinged joint a, as shown in the drawing.
1e lever F has its fulcrum on a pivot, b, secured the pipe 4]), Iead'mgto the water-chamber or steam-- genemtor.
, The safety-valve is made in the ordinary manner, with a conical 'face fitting into a correspondin seat, and, if said safety-valve is raised by the pres re of steam or water, the surplus steam or water escapes I through the blow-oft or discharge-pipe O.
The lever K is loaded with a-weight, which is movable on the same, so that the pressure exerted on. the safety-valve can be regulated to suit circumstances.
The spring-balance J is so adjusted that the register is connected to the lever F, and the index to the lever K, so that, when the lever F is raised by the action of the steam on the piston A, the register slides up under the index, and the amount ofprcssure acting on the piston is indicated.
The safety-valves generally used in hydraulic presses are cylindrical plugs, with a-couical face fitting into a corresponding conical seat, and the passage leading from this seat to the water-chamber is quite narrow, so that the area of the safety-valve exposed to the pressure of the water is quite small. I
It, therefore, the safety-v" lve binds or sticks only very little in its seat, the'pressure of the u ateris unable to lift the valve, and the water-chamber bursts.
By my improvement the safety-valve can be loaded dorm to the-desired amount, and if the pressure has reached the desired limit, the safety valve is entirely relieved of all weight, and it is free to blow oil.
This object is elfected by the action of the piston A and springbalance J. v
The piston offers a comparatively large area to the pressure of steam, audit is not liable tostick.
As soon as it begins to rise, the spring-balance exerts a strain on the lever K, audit thisstrain has reached the desired degree, as indicated on the dial of thebalauce, the safety-valve opens and blows off.
Having thus described my invention, I What I claim as new, and desire to secure by Letters Patent, isg The combination of the piston A, lever F, springbalance J, lever K, and safety-valve K, all constructed substantially as shown and described.
THOMAS ROWE.
Witnesses:
W. HAUFF, Enuns'r E. KASTENHU'BER.
US90874D Improvement in safety-valves Expired - Lifetime US90874A (en)

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