US42359A - Improvement in balanced slide-valves - Google Patents

Improvement in balanced slide-valves Download PDF

Info

Publication number
US42359A
US42359A US42359DA US42359A US 42359 A US42359 A US 42359A US 42359D A US42359D A US 42359DA US 42359 A US42359 A US 42359A
Authority
US
United States
Prior art keywords
valve
valves
improvement
steam
seat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Publication date
Application granted granted Critical
Publication of US42359A publication Critical patent/US42359A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/8667—Reciprocating valve

Definitions

  • the object of my invention is to relieve the back of the slide-valve of the pressure of the steam or other fluid in the valve chest, and thereby reduce its friction and wear; and to this end it consists principally in making the valve of arched or equivalent form in its transverse section, and Iitting it with suitable packing to a stationary protecting arch or cover, which extends right over it from one side of' the valve-seat to the other.
  • D is the val accessoriesst, made of the form commonly used with the three-port slide-valve.
  • B is the slide-seat flat, and having the steam valve-ports a a and exhaust-port b arranged in the usual manner.
  • A is the valve, having its face flat and of the form common to the three-port slide-valve, but having its back ot' semicircular form in its transverse section.
  • Its exhaust-opening c instead of being a mere cavity, extends right ⁇ through the back, and a tube, d, eX- tends lengthwise of the valve across this opening to surround the valve-stem s and prevent leakage of steam around it into the exhaust-opening c.
  • the two ends of the valve are solid and of semi cylindrical form and packed with ring, segment, or other packing, e e, to fit steanrtight to the protecting arch
  • Fig. 2 is a transversev or casing C.
  • the protecting arch or easing C is of semi-cylindrical form in its transverse section to correspond with the valve, and open at both ends. lt rests on the valveseat on each side of the valve, and is held down by being provided with projections 71l h on its back to fit against the cover of the chest and prevented from moving endwise by being furnished at its ends with projections 'i 1', to fit between the ends of the valve-chest. rlhe said arch might, however, be made in the same piece with the cover or bolted to the valve-seat.
  • the packing e e of the valve may be held out against the interior of the arch C by means of springs, or by the admission of steam within it through holesg g in the ends of the valve.
  • the back of the valve and the cover C may be of other than semi-cylindrical or arched form, but I consider that form the best, as it enables the necessary fit to be more easily made, and is more easily packed.

Landscapes

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

Description

rNITED STATES JDATENT l Erica.,
ROBERT FARIES, OF INDIANAPOLIS, INDIANA.
IMPROVEMENT IN BALANCED SLIDE-VALVES.
To all 7,072,071@ it puny concern:
Be it known that I, ROBERT FARIEs, of Indianapolis, in the county of hiarion and State'of Indiana.J have invented a new and use ful Improvement in the Slide-Valves of Steam and other Engines; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a central longitudinal vertical section of a valve-chest, valve, and seat illustrating my invention. vertical section of the saine in the planes indicated by the line m m in Fig. 1. Fig. 3 is a transverse vertical section of the same in the plane indicated by the line y y in Fig. l.
Similar letters of reference indicate corresponding parts in the several figures.
The object of my invention is to relieve the back of the slide-valve of the pressure of the steam or other fluid in the valve chest, and thereby reduce its friction and wear; and to this end it consists principally in making the valve of arched or equivalent form in its transverse section, and Iitting it with suitable packing to a stationary protecting arch or cover, which extends right over it from one side of' the valve-seat to the other.
To enable others skilled in the art to make and apply my invention, I will proceed to describe it with reference to the drawings.
D is the val vechest, made of the form commonly used with the three-port slide-valve.
B is the slide-seat flat, and having the steam valve-ports a a and exhaust-port b arranged in the usual manner.
A is the valve, having its face flat and of the form common to the three-port slide-valve, but having its back ot' semicircular form in its transverse section. Its exhaust-opening c, instead of being a mere cavity, extends right `through the back, and a tube, d, eX- tends lengthwise of the valve across this opening to surround the valve-stem s and prevent leakage of steam around it into the exhaust-opening c. The two ends of the valve are solid and of semi cylindrical form and packed with ring, segment, or other packing, e e, to fit steanrtight to the protecting arch Fig. 2 is a transversev or casing C. The protecting arch or easing C is of semi-cylindrical form in its transverse section to correspond with the valve, and open at both ends. lt rests on the valveseat on each side of the valve, and is held down by being provided with projections 71l h on its back to fit against the cover of the chest and prevented from moving endwise by being furnished at its ends with projections 'i 1', to fit between the ends of the valve-chest. rlhe said arch might, however, be made in the same piece with the cover or bolted to the valve-seat. The packing e e of the valve may be held out against the interior of the arch C by means of springs, or by the admission of steam within it through holesg g in the ends of the valve. The back of the valve and the cover C may be of other than semi-cylindrical or arched form, but I consider that form the best, as it enables the necessary fit to be more easily made, and is more easily packed.
The steam being admitted to the steamchest through a suitably-arranged opening, j, fills the chest at the back of and at both ends of the cover (J, and enters both ends of the said cover so as to press equally on both ends of the valve, but is prevented by the cover from pressing on the back of the valve. The whole of the exhaust opening or cavity c, surrounding the tube d, is always open to the exhaust-port b.
To prevent the valve from being lifted from its seat by steam getting between the face and seat from imperfect tting, there are small grooves fn, n cut transversely in the face of the valve, as shown in Figs. l and 3, and these grooves communicate with the exhaust-opening c by means of very small longitudinal openings m m, which, while permitting the escape of any steam which gets between the valve and seat, do not permit any considerable waste of steam. Instead of these grooves and passages being in the valveface, they may be in the seat and produce the same ei'ect.
What I claim as my invention, and desire to secure by Letters Patent, is-
l. The stationary protecting-cover C, of arched or other equivalent form in its transverse section, in combination with the packed valve A, having a transverse section of oorre- I 3. In. combination with such valve and. seat,
sponding form, substantially as and for the the grooves n 'n and passages m m, substanpurpose herein specified. tially as and for the purpose herein specified.
2. In Combination with suoh valve and cover, ROBERT FARTES.
the tube d, for preventing leakage of steam Witnesses around the valve-stem, Substantially as and S. D. PATTERSON, for the purpose herein set forth.
W. G. RIGGIN.
US42359D Improvement in balanced slide-valves Expired - Lifetime US42359A (en)

Publications (1)

Publication Number Publication Date
US42359A true US42359A (en) 1864-04-19

Family

ID=2111926

Family Applications (1)

Application Number Title Priority Date Filing Date
US42359D Expired - Lifetime US42359A (en) Improvement in balanced slide-valves

Country Status (1)

Country Link
US (1) US42359A (en)

Similar Documents

Publication Publication Date Title
US42359A (en) Improvement in balanced slide-valves
US619594A (en) Valve
US397672A (en) Throttle-valve
US756491A (en) Steam-valve for train-pipes.
US711121A (en) Hydraulic balanced valve.
US59848A (en) Impeovement -ih balance slide yalyes
US44777A (en) Improvement in balance steam-valves
US138397A (en) Improvement in balanced valves
US232271A (en) Balance slide-valve
US825705A (en) Valve.
US44830A (en) Improvement in slide-valves for steam-engines
US362525A (en) Matthewbobeet mooee
US308007A (en) Piston-valve
US990305A (en) Engine-valve.
US374289A (en) Geoege bonebe
US360628A (en) Balanced valve
US204649A (en) Improvement in piston-valves for engines
US410538A (en) George m
US428729A (en) Steam-engine
US110041A (en) Improvement in semi-rotary valves
US42154A (en) Improvement in slide-valves for steam-engines
US145261A (en) Improvement in balanced valves
US67204A (en) Philip c
US200388A (en) Improvement in balanced rotary valves
US363765A (en) Balanced oscillating valve