US592501A - George s - Google Patents

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US592501A
US592501A US592501DA US592501A US 592501 A US592501 A US 592501A US 592501D A US592501D A US 592501DA US 592501 A US592501 A US 592501A
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United States
Prior art keywords
plug
valve
casing
ring
check
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Expired - Lifetime
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01CPLANTING; SOWING; FERTILISING
    • A01C23/00Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks, sprinkling wagons
    • A01C23/04Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
    • A01C23/042Adding fertiliser to watering systems
    • 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
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/02Construction of housing; Use of materials therefor of lift valves
    • 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
    • Y10T137/8593Systems
    • Y10T137/86292System with plural openings, one a gas vent or access opening
    • Y10T137/863Access and outlet
    • 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
    • Y10T137/8593Systems
    • Y10T137/87917Flow path with serial valves and/or closures
    • Y10T137/88022One valve head provides seat for other head
    • Y10T137/8803Also carries head of other valve
    • 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
    • Y10T137/8593Systems
    • Y10T137/87917Flow path with serial valves and/or closures
    • Y10T137/88054Direct response normally closed valve limits direction of flow

Description

(No Model.)
G. S. THOMPSON.
PLUG CHECK VALVE FOR BOILERS.
No. 592,501. Patented Oct. 26,1897.-
all
e d J ea, .2 J
UNITED STATES PATENT OFFICE.
GEORGE S. THOMPSON, OF NEW YORK, N. Y.
PLUG CHECK-VALVE FOR BOILERS.
SPECIFICATION forming part of Letters Patent No. 592,501, dated October 26, 1897.
Application filed March 25, 1896. $erial No. 584,744. No modeLl To all whom it may concern:
Be it known that I, GEORGE S. THOMPSON, a citizen of the United States, residing at the city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Plug Check- Valves for Boilers, of which the following is a specification.
My invention has relation to a combined plug and check-valve for use on locomotive, traction-engine, and other boilers, and in such connection it relates particularly to the construction and arrangement of such a valve.
The principal objects of my invention are, first, to provide a combined plug and checkvalve of simple and durable construction, efficient in operation, and having the plug mounted in a casing the bottom of which is closed, and, second, to provide in such a valve a ball-check adapted to rest upon a valve-seat formed within the plug.
My invention, stated in general terms, consists of a combined plug and check-valve constructed and arranged in substantially the manner hereinafter described and claimed.
The nature and scope of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, and in which- Figure 1 is a vertical sectional view of a combined plug and check-valve embodying the main features of my invention; and Fig. 2 is a top or plan view, partly broken away to expose the stuffing-box of the valve.
Referring to the drawings, a represents a tubular valve-casing of substantially conical shape, the lower end a of which is closed and the upper end a open. Leading to the casing a is an inlet a and leading from the casing is an outlet a. Vithin the casing a is located a tubular conical plug b, its lower closed end b normally engaging the wall of the easing above the closed lower end a thereof, so as to compensate for wear of the same and to permit of the tightening thereof and thereby to prevent leakage of said plug during continual use. The interior of the plug bis provided with a valve-seat b and with the openings 11 and b above and below the seat b Then the plug 1) is turned in one direction, the opening 19 will register with the outlet (0, and the opening 5* will register with the inlet a to permit of the flow of liquid through the plug and easing; but when the plug is turned in the casing in an opposite direction the flow of liquid through the plug and casing is stopped. The upper end of the hollow conical plug is sealed or closed by means of a cap (Z, screwthreaded to the interior thereof and having formed on its upper end a square or polygonal projection 01, by means of which the cap (1 may be screwed or unscrewed by the application of awrench thereto. The tubular plug (Z is also provided near its upper end with a ledge or shoulder 6, upon which the inner periphery of a clamping-ring f is adapted to rest. This ring f is screw-threaded to the upper end of the conical casing a, and between the ring f and easing a is mounted a packing f of asbestos or the like, the ring and packing forming thereby a stuffing-box in which the plug is adapted to turn without permitting of the leakage of liquid. ledge e is preferably located a washer (2. Upon the valve-seat b of the plug 1) is introduced, by preference, a ball h of metal, rubher, or similar material to constitute a check in the passage of water through the plug. This ball it may be removed from the plug by simply unscrewing the cap d and the plug removed from the casing by unscrewing the ring f of the stuffing-box.
From the above description it will be understood that the ball It may be removed from the interior of the plug 19 by unscrewing the cap (1 and without disturbing the ring f, packing f, or washer e, and that the packing and washer may also be removed or repaired by simply unscrewing the clampingring f and without removing the plug or ball. Having thus described the nature and ob jects of my invention, what I claim as new, and desire to secure by Letters Patent, is The combination, in a plug check-valve, of the casing a, having a closed lower end a, and inlet and outlet openings, a conical hollow plug 1), adapted to turn in said casing and having an opening in its upper end and openings in its wall adapted to register with the openings in the casing, a screw-cap (1, adapted to normally close the upper end of said plug, a ball-valve h, adapted to be introduced through the opening in the upper Between the ring f and ICO end of the plug and to seat'itself in the interior of the plug, a ledge e, formed. on the peri phery of the pl [1 g, a 01am pin g-ring f, adapted to slip over the cap d and the upper end of the plug and to be screwed down on the easing a, toward the ledge e, a packing f, interposed between the casing and ring, and a Washer interposed between the ledge e, and said ring, all arranged so that said ball-valve may be removed from the interior of the p1u g without disturbing said packing and pack ing-ring and said packing may be removed without removing said plug or ball-valve, substantially as described.
In testimony whereof I have hereunto set 15 my signature in the presence of two subscribing witnesses.
GEO. S. THOMPSON.
WVitnesses:
J. WALTER DOUGLASS, RICHARD O. MAXWELL.
US592501D George s Expired - Lifetime US592501A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921598A (en) * 1987-07-17 1990-05-01 Desch Kurt M Selector valve, especially a central control valve for a water treatment device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921598A (en) * 1987-07-17 1990-05-01 Desch Kurt M Selector valve, especially a central control valve for a water treatment device

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