US52609A - Improvement in balanced slide-valves - Google Patents

Improvement in balanced slide-valves Download PDF

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US52609A
US52609A US52609DA US52609A US 52609 A US52609 A US 52609A US 52609D A US52609D A US 52609DA US 52609 A US52609 A US 52609A
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valves
valve
ports
improvement
nut
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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
    • 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

  • A is a valve-seat having the ports or passages B O D cut in it, the port B communicating with the boiler, and the ports O and D communicating with the two ends ot the cylinder.
  • E is a valve-seat opposite A and similar to it, having the ports b c el, corresponding to the ports B O D ot' the valve-seat A.
  • the corresponding ports ot' the two valve-seats are connected with each other by means ot the apertures a a, drilled through the side of the chest I.
  • valves sliding upon the valveseats A and E are valves sliding upon the valveseats A and E. These valves are in the form of the common slide-valve, and their. faces are equal.
  • the wings'c c of the valves G and F cover the ports O c and D d communicating with the cylinder, consequently no steam is admitted to either end of the cylinder.
  • the valves F and G a communication is formed, by means ot' the'recesses o o of the valves F and G, between the steam-ports B b and the ports O c or D d, communicating with the cylinder.
  • the ports communicating with the other end of the cylinder are uncovered and the exhauststeam isadmitted into the chest and conveyed,
  • valves F and G are driven by means of the valve-rod H, which has the collars b b, with their set-nuts c c adjusted to the shoulders of the valves for that purpose.
  • valve-rod H Upon the valve-rod H, between the collars lll" n Upon moving4 b I), is a nut, d, working easily upon it, and having'two opposite sides beveled, the two sides together thus forming a wedge.
  • the backs of the valves F and G are beveled to correspond with the beveled sides of the nut d, and the nut d is of such a thickness that when the valves F and G are close down upon their respective seats the beveled sides of the wedge-nut d shall be just in contact with the beveled surfaces upon the backs of the valves F and G.
  • valves are pressed too tightly upon their respective seats, by turning the rod in a contrary' direction the wedge-nut d will be drawn back and the valves released.
  • the valves may at any time be exactly adjusted to their respective seats.
  • the arrangement ot the two slide-valves F and G in the same chest, opposite each other, and having the pressure ot' the steam upon their under sides, as herein described, so that their respective pressures shall be mutually compensatory.

Description

IlNiTnn STATES PATENT OFFICE.
FRANK H. RICHARDS, OF LANSINGBURG, NEW YORK.
IMPROVEMENT IN BALANCED SLIDE-VALVES.
Specification forming part of Letters Patent No. 52,609, dated February 13, 1866.
To alt whom it may concern:
Beit known that I, FRANK H. RICHARDS, of Lansingburg, in the county of Rensselaer and State of New York, have invented a new and useful Improvement on Equilibrium Slide- Valves for Steam-Engines; and I do hereby declare that the following is a full, clear, and exact description of t he same, reference being had to the accompanying drawings, and to the letters of reference marked thereon- Figure l being a plan ot' the valve-seat, Fig. 2 being a side section of the valve complete, Fig. 3 being an end section of the same.
A is a valve-seat having the ports or passages B O D cut in it, the port B communicating with the boiler, and the ports O and D communicating with the two ends ot the cylinder.
E is a valve-seat opposite A and similar to it, having the ports b c el, corresponding to the ports B O D ot' the valve-seat A. The corresponding ports ot' the two valve-seats are connected with each other by means ot the apertures a a, drilled through the side of the chest I.
G and F are valves sliding upon the valveseats A and E. These valves are in the form of the common slide-valve, and their. faces are equal.
As represented in the drawings, Fig. 2, the wings'c c of the valves G and F cover the ports O c and D d communicating with the cylinder, consequently no steam is admitted to either end of the cylinder. the valves F and G a communication is formed, by means ot' the'recesses o o of the valves F and G, between the steam-ports B b and the ports O c or D d, communicating with the cylinder. By the same movement of the valves the ports communicating with the other end of the cylinder are uncovered and the exhauststeam isadmitted into the chest and conveyed,
by means ofthe pipe K, to the atmosphere or condenser. Upon moving the valves in the opposite direction the same result ensues to the other end of cylinder.
The pressure of steam from the steam-ports B b being' upon the under sides of the valves F and G, it will, unless counteracted, immediately drive them od their respective seats. This pressure is counteracted by the following device: The valves F and G are driven by means of the valve-rod H, which has the collars b b, with their set-nuts c c adjusted to the shoulders of the valves for that purpose.
Upon the valve-rod H, between the collars lll" n Upon moving4 b I), is a nut, d, working easily upon it, and having'two opposite sides beveled, the two sides together thus forming a wedge. The backs of the valves F and G are beveled to correspond with the beveled sides of the nut d, and the nut d is of such a thickness that when the valves F and G are close down upon their respective seats the beveled sides of the wedge-nut d shall be just in contact with the beveled surfaces upon the backs of the valves F and G.
The ports and surfaces ot' the valve-seats A and E being equal, and the pressure from their corresponding ports being equal, by means of the apertures a ct connecting them, and the surfaces ot' the valves F and G being also equal, the pressure under the valves F and G will be equal and communicating with each other through the wedge-nutd. Between them their pressures will exactly balance each other and the valves will be in equilibrium.
Upon turning the valve-rod H the collars b b, beingl held tight by their set-nuts c c, will turn with it and still remain in contact with the shoulders of the valves F and G; but the wedge-nut d, working easily upon the valverod H, and being held by the two sides iu contact with the backs of valves F and G, will not turn 5 consequently upon turning the rod H the wedge-nut d is pushed forward along the beveled backs ofthe valves F and G, and the valves are distended from each other and pressed down upon the valve-seats A and E.
It' the valves are pressed too tightly upon their respective seats, by turning the rod in a contrary' direction the wedge-nut d will be drawn back and the valves released. Thus by turning the rod H the valves may at any time be exactly adjusted to their respective seats.
I claim as my inventioni l.. The arrangement ot the two slide-valves F and G in the same chest, opposite each other, and having the pressure ot' the steam upon their under sides, as herein described, so that their respective pressures shall be mutually compensatory.
2. The wedge-nut d, operated as herein described, for adjusting the valves to their respective seats.
FRANK H. RICHARDS.
Witnesses:
D. L. HoLMEs, JAMES M. SMITH.
mili-5
US52609D Improvement in balanced slide-valves Expired - Lifetime US52609A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040087081A1 (en) * 2002-11-01 2004-05-06 Aitchison Bradley J. Capacitor fabrication methods and capacitor structures including niobium oxide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040087081A1 (en) * 2002-11-01 2004-05-06 Aitchison Bradley J. Capacitor fabrication methods and capacitor structures including niobium oxide

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