US188556A - Improvement in relief and safety stop valves - Google Patents

Improvement in relief and safety stop valves Download PDF

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Publication number: US188556A
Authority: US; United States
Prior art keywords: relief; valve; improvement; safety stop; stop valves
Prior art date: 1877-03-20
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

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Publication date

1877-03-20

1877-03-20 Application granted granted Critical

1877-03-20 Publication of US188556A publication Critical patent/US188556A/en

1894-03-20 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8

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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
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve 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
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86879—Reciprocating valve unit
- Y10T137/86895—Plural disk or plug

Description

C. P. WIGGINS.'

RELIEF AND SMAET'Y'4S'IQP VALVE.- No.188,556. Patented March 20,1877.

MOWM

Aonms.

STATES PATENT Frou.

CHARLES P. WIGGINS, OF ST. LOUIS, MISSOURI.

IMPROVEMENT IN RELIEF AND SAFETY STOP VALVES.

Specification forming part of Letters Patent No. 188,556, dated March 20, 1877; application tiled January 19, 1877.

To all whom t may concern:

Beit known that I, CHARLES PYLE Wre- GINS, of'St. Louis, in the county of St.vLouis and Stateof Missouri, have invented a new and useful Improvement in Relief or Safety Stop Valve, of which the following is a specication:

The figure is a longitudinal4 section of my improved valve.

The object of this invention is to furnish an improved stop-valve, to preventaccidents from carelessly closing thevfeed-pipe while the I ,pump is in motion, and which shall be so constructed as to always leave an open discharge.

The invention consists in a relief or safety stop valve, formed of the shell provided With an inlet, two outlets, and two valve-seats, and the double valve, so arranged that it can close only one outlet at a time, to adapt it to be interposed between the boiler and the check-valve of the pump discharge-pipe, as hereinafter fully described.

A represents the shell of my improved valve. al is the opening that leads to the check-valve, and thence to the pump. a2 is the opening that leads to the boiler, andi/L3 is an opening that leads to the open air, or to any convenient receiver. rlhe shellA is provided With two valve-seats, a4a5, one upon each side of the opening al. B is a double valve, which may be adjusted to rest upon the seat a4 and close the passage to theboiler, or may be adjusted to rest upon theseat als and close the discharge a3, but which can never close both openings at' the same time, thus leavinga free discharge for the water at all times. In

the shell A, above the seat a5, is formed af chamber, a6, through which the water passes to the dischargeopening a3.

The valve B is attached to the end of a stem,

C, which has a screw-thread cut upon it, and

passes in through a screw-hole in the end of the shell A, and through a stuffing-box, D, at-

tached to said end, so that the valve B may be adjusted into either seat by turning the stem C. To the outer end of the stem C is at- -tached va hand-wheel, E, for convenience in turning it. v

By this device, should the discharge of Water into the boiler be stopped while the pump is at Work, the Water will be discharged through the passage a3, and there will be no

US188556D Improvement in relief and safety stop valves Expired - Lifetime US188556A (en)

Publications (1)

Publication Number	Publication Date
US188556A true US188556A (en)	1877-03-20

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Family Applications (1)

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US188556D Expired - Lifetime US188556A (en)			Improvement in relief and safety stop valves

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US (1)	US188556A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US20030020041A1 (en) *	2001-07-25	2003-01-30	Nearpass Gary A.	Back seating valve with service port

0
- US US188556D patent/US188556A/en not_active Expired - Lifetime

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US20030020041A1 (en) *	2001-07-25	2003-01-30	Nearpass Gary A.	Back seating valve with service port
US6832750B2 (en) *	2001-07-25	2004-12-21	Parker-Hannifin Corporation	Back seating valve with service port

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US188556A (en)	1877-03-20	Improvement in relief and safety stop valves
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US120925A (en)	1871-11-14	Improvement in automatic relief-valves
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US1148193A (en)	1915-07-27	Faucet.
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US1007560A (en)	1911-10-31	Reversible stop and check valve.
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US838055A (en)	1906-12-11	Safety-valve for water-gages.