US123546A - Improvement in lock safety-valves for steam-boilers - Google Patents

Improvement in lock safety-valves for steam-boilers Download PDF

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US123546A
US123546A US123546DA US123546A US 123546 A US123546 A US 123546A US 123546D A US123546D A US 123546DA US 123546 A US123546 A US 123546A
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valves
valve
steam
boilers
cap
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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
    • F16K15/00Check valves
    • F16K15/02Check valves with guided rigid valve members
    • F16K15/06Check valves with guided rigid valve members with guided stems
    • F16K15/063Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • 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
    • Y10T137/7922Spring biased
    • Y10T137/7923With means to protect spring from fluid
    • 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
    • Y10T137/7922Spring biased
    • Y10T137/7929Spring coaxial with valve
    • Y10T137/7939Head between spring and guide

Definitions

  • the case B is cylindrical; is screwed upon the standard, as shown at a a; has a series of long slots or openings, 1) I), made vertically through it; and is surmounted by a circular cap, O,provided with a knob or handle, 0. Furthermore, there is arranged concentrically within the standard A and at its upper part, or applied thereto, in manner as shown in Fig. 2, a cylindrical valve, E, which has a cylindrical extension, (I, provided with a semi-spherical open chamber, 6.
  • a guide-cylinder, F closed at top and formed as shown, is screwed at its top, as represented at e 0, into the upper part of the case B, and extends downward nearly to the valveseat, and encompasses and fits to the cylindrical part of the valve, all being as shown.
  • a ey lindrical journal, f is projected downward through a corresponding hole, g, made in the head of the guide-cylinder F, and is connected .with the said head by a nut, h, screwed upon the journal.
  • a male screw, G which is screwed into and through a nut or cap, H, between and against which and the valve, and within the cylinder F, there is arranged ahelical spring, I.
  • ahelical spring, I By taking hold of the knob c and revolving the cap 0 the nut or cap H may be depressed or raised within the cylinder F so as to vary the pressure of the spring upon the valve.
  • a bolt, K goes through the cap O and the flange a; of the case B, such bolt being provided with an eye or hole going transversely through its lower part to receive the hasp of a padlock, L.
  • the said cap C may or should be provided with a series of holes made down through it at or about at equal distances apart, so as to admit of the cap 0 being fixed or looked after it may have been adjusted, to cause the spring to operate with any desired degree of pressure on the valve. If desirable, such holes may be marked or stamped, or provided with marks or numbers, to indicate the pressure in pounds per square inch of the spring on the safety-valve, when the bolt may be in either of such holes of the flange.
  • the space between the bottom of the insulator and guide F and the valve-seat D will admit of the escape of steam into the case B and out of its openings 1) when the valve is forced ofi' its seat.
  • the purpose of said part F is not only to guide the valve vertically, but to insulate the spring and its contractile mechanism from the steam, as well as to prevent any person from gaining access to the spring and its cap'nut when the cap 0 is locked down.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Description

H. G.YASHTON.
Improvement in Lock Safety Valves for Steam Boilers.
Patented Feb.13 1872.
W uynezm e d fy/awe;
an, M r Insane/v53 rnaozss a tubular valve-seat, D, having HENRY G. ASHTON, OF EAST CAMBRIDGE, MASSACHUSETTS.
IMPROVEMENT IN LOCK SAFETY-VALVES FOR STEAM-BOILERS.
Specification forming part of Letters Patent No. 123,546, dated February 13, 1872.
To allpersons to whom tizesepresents may come:
Be it known that I, HENRY G. ASHTON, of East Cambridge, of the county of Middlesex and State of Massachusetts, have invented an Improved Lock Safety-Valve for Steam-Boilers and do hereby declare the same to be fully described in the following specification, and represented in the accompanying drawing, of Which- Figure 1 is a front elevation, and'Fig. 2 a vertical section of it, it being shown as applied to a hollow standard or educt, A, to be fixed to the top of a boiler.
The case B is cylindrical; is screwed upon the standard, as shown at a a; has a series of long slots or openings, 1) I), made vertically through it; and is surmounted by a circular cap, O,provided with a knob or handle, 0. Furthermore, there is arranged concentrically within the standard A and at its upper part, or applied thereto, in manner as shown in Fig. 2, a cylindrical valve, E, which has a cylindrical extension, (I, provided with a semi-spherical open chamber, 6. A guide-cylinder, F, closed at top and formed as shown, is screwed at its top, as represented at e 0, into the upper part of the case B, and extends downward nearly to the valveseat, and encompasses and fits to the cylindrical part of the valve, all being as shown. From and concentrically with the cap 0 a ey lindrical journal, f, is projected downward through a corresponding hole, g, made in the head of the guide-cylinder F, and is connected .with the said head by a nut, h, screwed upon the journal. Furthermore, there extends down from such journal a male screw, G, which is screwed into and through a nut or cap, H, between and against which and the valve, and within the cylinder F, there is arranged ahelical spring, I. By taking hold of the knob c and revolving the cap 0 the nut or cap H may be depressed or raised within the cylinder F so as to vary the pressure of the spring upon the valve. A bolt, K, goes through the cap O and the flange a; of the case B, such bolt being provided with an eye or hole going transversely through its lower part to receive the hasp of a padlock, L. The said cap C may or should be provided with a series of holes made down through it at or about at equal distances apart, so as to admit of the cap 0 being fixed or looked after it may have been adjusted, to cause the spring to operate with any desired degree of pressure on the valve. If desirable, such holes may be marked or stamped, or provided with marks or numbers, to indicate the pressure in pounds per square inch of the spring on the safety-valve, when the bolt may be in either of such holes of the flange. The space between the bottom of the insulator and guide F and the valve-seat D will admit of the escape of steam into the case B and out of its openings 1) when the valve is forced ofi' its seat. The purpose of said part F is not only to guide the valve vertically, but to insulate the spring and its contractile mechanism from the steam, as well as to prevent any person from gaining access to the spring and its cap'nut when the cap 0 is locked down.
I am aware of the safety-valves shown and described in the United States patents 81,320, 86,346, and 97 ,472, and make no claim thereto or anything contained therein. Neither of such valves has to its case a rotary cover with a screw -projected fiom it, as in my safetyvalve; nor has either of the said patented valves a guard, F, screwed into-the outer case and separate from the valve, and serving as a bearing for the screw-journal and its rotary cover; nor is there in said patented valves the arrangement of the guard as a guide for the valve, and at a short distance on" its seat, as is shown in my lock-up safety-valve. Therefore my said valve differs in essential particulars from the others, as stated.
- I claim- The case B, the rotary cap 0, the valve E, its seat D, the insulator F, the spring I, the screw G, and the cap-nut H, all constructed, arranged, and applied together substantially in manner as explained.
HENRY G. ASHTON.
Witnesses:
B. H. EDDY, J. R. Snow.
US123546D Improvement in lock safety-valves for steam-boilers Expired - Lifetime US123546A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603231A (en) * 1952-07-15 Pressure relief valve
US2969811A (en) * 1955-03-14 1961-01-31 Mathew L Freeman Valves
US3163178A (en) * 1962-11-19 1964-12-29 Pioneer Hydraulics Inc Coupler for hydraulic lines
US20110073286A1 (en) * 2009-09-29 2011-03-31 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Water-cooled heat dissipation system and water tank thereof
US20180187788A1 (en) * 2008-03-27 2018-07-05 Water Management Solutions LLC Accuracy enhancing valve assembly and method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603231A (en) * 1952-07-15 Pressure relief valve
US2969811A (en) * 1955-03-14 1961-01-31 Mathew L Freeman Valves
US3163178A (en) * 1962-11-19 1964-12-29 Pioneer Hydraulics Inc Coupler for hydraulic lines
US20180187788A1 (en) * 2008-03-27 2018-07-05 Water Management Solutions LLC Accuracy enhancing valve assembly and method
US10428963B2 (en) * 2008-03-27 2019-10-01 Water Management Solutions, Llc Accuracy enhancing valve assembly and method
US11555549B2 (en) * 2008-03-27 2023-01-17 Microflow, Llc, A Delaware Limited Liability Company Accuracy enhancing valve assembly and method
US20110073286A1 (en) * 2009-09-29 2011-03-31 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Water-cooled heat dissipation system and water tank thereof
US8631860B2 (en) * 2009-09-29 2014-01-21 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd Water-cooled heat dissipation system and water tank thereof
US20140096847A1 (en) * 2009-09-29 2014-04-10 Hon Hai Precision Industry Co., Ltd. Water tank of water-cooled heat dissipation system
US9254948B2 (en) * 2009-09-29 2016-02-09 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Water tank of water-cooled heat dissipation system

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