US54129A - Improvement in steam-valves - Google Patents

Improvement in steam-valves Download PDF

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US54129A
US54129A US54129DA US54129A US 54129 A US54129 A US 54129A US 54129D A US54129D A US 54129DA US 54129 A US54129 A US 54129A
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Prior art keywords
valve
stem
steam
valves
shell
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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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/44—Details of seats or valve members of double-seat valves
    • F16K1/443—Details of seats or valve members of double-seat valves the seats being in series
    • F16K1/446—Details of seats or valve members of double-seat valves the seats being in series with additional cleaning or venting means between the two seats
    • 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
    • Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
    • Y10T137/4245—Cleaning or steam sterilizing
    • Y10T137/4259—With separate material addition

Definitions

  • My invention relates to that class of valves denominated ⁇ globe-valves 5 and it consists in so constructing it that the valve may be ground to its seat without removing it, and also in so constructing the parts that the stem of the valve may be packed without shutting off the steam from the globe or valve.
  • A represents the globe or shell having the diaphragm a, with the valve-seat, constructed in the usual manner.
  • E represents the valve, which is fitted to its seat as usual, and having a stem, B, which passes through a hub or col-lar, D, which screws into the side of the shell, as shown in Fig. 1.
  • a sleeve, G having a screw-thread cutl on its interior surface corresponding with a similar thread on the stem B, a hand-wheel, H, being secured to the outer end ofthe stem for oper ating it, as usual.
  • the lower end of the sleeve C is provided with an annular recess surrounding the stem B, on which latter is placed a collar or ring, n, for the purpose of packing the stem and preventing the escape ot' steam.
  • valve E is provided with a conical hub on its upper side surrounding the stemB, and that acorresponding recess, o, is made in the inner end of hub D, so that by unscrewing the sleeve C and drawing the stem B back the conical hub of valve E will lit into the recess o and prevent the escape of steam around the stem while it g is being packed at the upper end of D, thereby saving the necessity of shutting o the steam in order to pack the stein B.
  • the shell is attached to a vertical pipe one of the holes will be above the center whichever end up the shell may be, and if attached to a horizontal pipe one ot the holes will always be on the upper side.
  • bracket, b is cast on the inside of the shell, directly under the lower end of the stem.
  • a hole is bored in this bracket b to receive the small projecting stem e, which is but a continuation of the main stem B, as shown in Fig. l. If desired, however, this may be dispensed with, as the stem B is guided both by its bearing in the sleeve C and also in the hub D.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Details Of Valves (AREA)

Description

UNITED SrAfrEs PATENT EErcE.
IMPROVEMENT IN STEAM-VA LVES.
Specification forming part of Letters Patent No. 54,129, dated April 24, 1866.
To all whom it may concern Be it known that I, THOMAS B. DEXTER, of Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Globe-Valves 5 and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had t0 the accompanying drawing, inaking part of this specification, and to the letters of reference marked thereon, like letters indicating like parts wherever they occur.
To enable others skilled in the art to construct and use the invention, I will proceed to describe it.
My invention relates to that class of valves denominated `globe-valves 5 and it consists in so constructing it that the valve may be ground to its seat without removing it, and also in so constructing the parts that the stem of the valve may be packed without shutting off the steam from the globe or valve.
A represents the globe or shell having the diaphragm a, with the valve-seat, constructed in the usual manner.
E represents the valve, which is fitted to its seat as usual, and having a stem, B, which passes through a hub or col-lar, D, which screws into the side of the shell, as shown in Fig. 1. To the outer end of this collar D is screwed a sleeve, G, having a screw-thread cutl on its interior surface corresponding with a similar thread on the stem B, a hand-wheel, H, being secured to the outer end ofthe stem for oper ating it, as usual. The lower end of the sleeve C is provided with an annular recess surrounding the stem B, on which latter is placed a collar or ring, n, for the purpose of packing the stem and preventing the escape ot' steam.
It will be observed that the valve E is provided witha conical hub on its upper side surrounding the stemB, and that acorresponding recess, o, is made in the inner end of hub D, so that by unscrewing the sleeve C and drawing the stem B back the conical hub of valve E will lit into the recess o and prevent the escape of steam around the stem while it g is being packed at the upper end of D, thereby saving the necessity of shutting o the steam in order to pack the stein B.
As ordinarily constructed, it is necessary when the valve becomes worn so as to leak steam to detach it from the pipes in order to grind the valve to its seat again and make it tight. In order to obviate this necessityI tap a hole into the shell on each side and till them with a screw, as shown at m of Fig. 2. These holes are so located that no matter in what position the shell A may stand, whether attached to a horizontal or vertical pipe, one of said holes will always be in a proper position to admit emery and o il to be inserted through it onto the valve-seat. 1f the shell is attached to a vertical pipe one of the holes will be above the center whichever end up the shell may be, and if attached to a horizontal pipe one ot the holes will always be on the upper side. By these means the emery and oil can always be inserted without removing the valve or the hub D, it only being required to unscrew the sleeve C, so as to turn the stem in grinding the valve and fitting it to its seat.
In order to guide the valve accurately to its seat a bracket, b, is cast on the inside of the shell, directly under the lower end of the stem. A hole is bored in this bracket b to receive the small projecting stem e, which is but a continuation of the main stem B, as shown in Fig. l. If desired, however, this may be dispensed with, as the stem B is guided both by its bearing in the sleeve C and also in the hub D.
Having thus described myinvention, what I claim is- The shell A, provided with the openings and plugs m, for the purpose of introducing material and enabling the valve to be ground to its seat without removing the hub D or other parts, as set forth.
THOMAS B. DEXTER.
Witnesses: s
W. C. DODGE, R. E. ELLEEBEGK.
US54129D Improvement in steam-valves Expired - Lifetime US54129A (en)

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