US344172A - Rotary valve - Google Patents

Rotary valve Download PDF

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US344172A
US344172A US344172DA US344172A US 344172 A US344172 A US 344172A US 344172D A US344172D A US 344172DA US 344172 A US344172 A US 344172A
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Prior art keywords
valve
rotary valve
shell
steam
plate
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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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
    • F16K3/18—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
    • F16K3/188—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members by means of hydraulic forces

Definitions

  • A is t-he shell, accurately bored to an uniform diameter.
  • B is the rotary Valve, which consists of a cylindrical plug ont away at the center to admit ofthe passage ofthe water or steam from one end of the shell to the other when the said valve is open or placed as shown in Fig. IV.
  • valve C is a segmental plate inserted loosely in a rabbet, a, in the face of the valve B, which. serves to form a close joint with the inner surface ofthe shell A.
  • the central part,b,of the valve B is provided with holes c. to allow of steam or water under pressure acting directly on the rear or inner face of the plate C,to form a tight joint when the valve is closed.
  • the arrow in Fig. I shows the direction of How ot' the steam or water.
  • the stem D,wl. ⁇ ich passes through astulting-boX,E, in the bonnet F, has a T-head, which rests in a recess, g, in the upper cylindrical end of the valve B and serves to turn the valve.
  • the T-heud ot' the stem D prevents the withdrawal of the stem. except by first removing the bonnet F.

Description

(No Mm) W. o. DBNMBAD.
ROTARY VALVE. No. 344,172. Patented June 22, 1886.
UNITED STATES PATENT GFEICE.
WILLIAM G. DENMEAD, OF BALTIMORE, MARYLAND.
ROTARY VALVE.
SPECIFICATION forming part of Letters Patent No. 344,172, dated June 22, 1886.
Application tiled November 28, i885. Serial Na-1,148. (No model.)
To all whom, it may concern:
Be it known that LWILLIAM C. DENMEAD, of the city ofV Baltimore, and State of Maryland, have invented certain Improvements in Rotary Valves, of which the following is a specification.
In the description of the said invention which follows reference is made to the accompanying drawings, forming a part hereof,and in which- Figure I is a longitudinal section of the improved valve, and Fig. II a cross-section of the same. Fig. III is a section taken on the dotted line x x. Fig. l. FigV IV is a similar View of Fig. III, except that the position of the valve is changed.
A is t-he shell, accurately bored to an uniform diameter.
B is the rotary Valve, which consists of a cylindrical plug ont away at the center to admit ofthe passage ofthe water or steam from one end of the shell to the other when the said valve is open or placed as shown in Fig. IV.
C is a segmental plate inserted loosely in a rabbet, a, in the face of the valve B, which. serves to form a close joint with the inner surface ofthe shell A. The central part,b,of the valve B is provided with holes c. to allow of steam or water under pressure acting directly on the rear or inner face of the plate C,to form a tight joint when the valve is closed.
The arrow in Fig. I shows the direction of How ot' the steam or water. The cylindrical ends d of the valve tit in the casing; but it is not necessary that the joints thus formed should be steam-tight, as the said ends do not at any time cover the inlet and outlet apertures e and f, but merely answer the purpose of guides. The stem D,wl.\ich passes through astulting-boX,E, in the bonnet F, has a T-head, which rests in a recess, g, in the upper cylindrical end of the valve B and serves to turn the valve. The T-heud ot' the stem D prevents the withdrawal of the stem. except by first removing the bonnet F. It will be understood that as the segmental plate C wears it is forced out and against the shell. and a tight joint constantly maintained. The pressure beiug on the plate C alone,there is practically no wear on the guiding ends of the valve,and thus when the plate is entirely worn ont another can be substituted therefor at a nominal expense.
I claim as my invention- In combination with the shell A, the cylindrical valve B, cut away centrally and perforated, substantially as shown, and the loose segmental plate C, substantially as specified.
VILLIA M C. DENMEAD.
IVitnesses:
JNO. T. MADDOX, WM. T. HOWARD.
US344172D Rotary valve Expired - Lifetime US344172A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2845248A (en) * 1954-09-09 1958-07-29 Winona Tool Mfg Company Non-sticking leak-proof valve
US3343805A (en) * 1963-09-30 1967-09-26 Loewy Eng Co Ltd Disc or butterfly valves
US3506027A (en) * 1967-09-20 1970-04-14 Dresser Ind Fire hydrant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2845248A (en) * 1954-09-09 1958-07-29 Winona Tool Mfg Company Non-sticking leak-proof valve
US3343805A (en) * 1963-09-30 1967-09-26 Loewy Eng Co Ltd Disc or butterfly valves
US3506027A (en) * 1967-09-20 1970-04-14 Dresser Ind Fire hydrant

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