US134548A - Improvement in check-valves - Google Patents
Improvement in check-valves Download PDFInfo
- Publication number
- US134548A US134548A US134548DA US134548A US 134548 A US134548 A US 134548A US 134548D A US134548D A US 134548DA US 134548 A US134548 A US 134548A
- Authority
- US
- United States
- Prior art keywords
- valve
- check
- pump
- valves
- boiler
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000000994 depressed Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000000284 resting Effects 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
-
- 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
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7781—With separate connected fluid reactor surface
- Y10T137/7782—With manual or external control for line valve
-
- 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
- Y10T137/85978—With pump
- Y10T137/85986—Pumped fluid control
- Y10T137/86002—Fluid pressure responsive
- Y10T137/86019—Direct response valve
-
- 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
- Y10T137/87917—Flow path with serial valves and/or closures
- Y10T137/88054—Direct response normally closed valve limits direction of flow
Definitions
- Iinterpose be-v c denotes the pump tube or pipe, having a chamber,b, in which is a cylindrical check-valve,
- valve c resting on a valve-seat, d, and raised by the pressure of the water forced up against it by the pump to enable the water to escape by its sides, between the bars c, up into and through the passage f into the boiler.
- a circular passage, g the rim of which forms a seat, h, Vfor a cylindrical valve, i, attached to a vertical stem, k, passing through the neck l and a suitable stuffing-box, and raised and depressed bya handle, m, this valve iitting to its seat so that when closed the Valve is steam-tight, and the pressure of the steam keeps it to its seat.
- valve t' is raised and stays up by the friction of the stem in the stuffing-box.
- the check-valve c then rises and falls alternately by the pressure of the water and the back pressure of the steam 5 but when the boiler is to be disconnected from the pump the stem k is pressed down, forcing the valvet' against its seat It, as seen in Fig-2, where it is held tightly by the pressure of the steam.
- the pump mechanism is then accessible and may be removed 5 and when reconnected to the cylinder or case the pressure of the water will force up the valve t' if, from accident or other reason, it be left closed, it being impossible, with this valve mechanism, that connection between the boiler and pump shall be so closed that the reconnection cannot be again established by the direct pressure ofthe water without hand-manipulation of the valve-stem.
- I claim- The arrangement within the body b, in theV manner substantially as described and for the purpose specified, of the two check-valves interposed between a boiler, in which .pressure is maintained, and a force-pump for feeding the boiler.
- GEO It. CARTER, GEO. A. BARNARD.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
Description
1.lc.HoADLl-:Y.
Check-Valves.
Patented 1an. 7, 1873.
WW2-asse s,
JOHN c. HOADLEY, or LAWRENCE, MASSACHUSETTS.
IMPROVEMENT IN CHECK-VALVES.
Specification forming part of Letters Patent No. lf, dated January 7, 1873.
To all whom t may concern: y
Be it known that I, JOHN G. HOADLEY, of Lawrence, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Boiler-Feed Apparatus 5 and I do hereby declare that the following, taken in counection with the drawing which accompanies and forms part of this specification, is a description of my invention sufficient to enable those skilled in the art to practice it.
In waterinjecting pumps of steam-boilers it is customary, to some extent, to introduce a globe-valve or a plug-valve between the boiler and the check-valve of the pump in order to shut off the boiler' from the pump, for access to the pump or dismemberment thereof, for repairs or other purpose. It is found in practice, however, that it is tb a highdegree objectionable to attach such a valve, as any neglect in reopening it after it has been closed for access to the pump-valves or chamber is sure to lead to an explosion, when the boiler is making steam, from failure of the pump to supply water. In this invention my purpose has been to supply a valve which, if accidentally or negligently left closed in shutting off the pump, will `be automatically opened by the pressure of the feed-water.
In carrying out my invention Iinterpose be-v c denotes the pump tube or pipe, having a chamber,b, in which is a cylindrical check-valve,
c, resting on a valve-seat, d, and raised by the pressure of the water forced up against it by the pump to enable the water to escape by its sides, between the bars c, up into and through the passage f into the boiler. Between the valve c and the passage f is a circular passage, g, the rim of which forms a seat, h, Vfor a cylindrical valve, i, attached to a vertical stem, k, passing through the neck l and a suitable stuffing-box, and raised and depressed bya handle, m, this valve iitting to its seat so that when closed the Valve is steam-tight, and the pressure of the steam keeps it to its seat.
Normally, the valve t' is raised and stays up by the friction of the stem in the stuffing-box. The check-valve c then rises and falls alternately by the pressure of the water and the back pressure of the steam 5 but when the boiler is to be disconnected from the pump the stem k is pressed down, forcing the valvet' against its seat It, as seen in Fig-2, where it is held tightly by the pressure of the steam. The pump mechanism is then accessible and may be removed 5 and when reconnected to the cylinder or case the pressure of the water will force up the valve t' if, from accident or other reason, it be left closed, it being impossible, with this valve mechanism, that connection between the boiler and pump shall be so closed that the reconnection cannot be again established by the direct pressure ofthe water without hand-manipulation of the valve-stem.
I claim- The arrangement within the body b, in theV manner substantially as described and for the purpose specified, of the two check-valves interposed between a boiler, in which .pressure is maintained, and a force-pump for feeding the boiler.
. JOHN C. HOADLEY. Witnesses:
GEO. It. CARTER, GEO. A. BARNARD.
Publications (1)
Publication Number | Publication Date |
---|---|
US134548A true US134548A (en) | 1873-01-07 |
Family
ID=2203964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US134548D Expired - Lifetime US134548A (en) | Improvement in check-valves |
Country Status (1)
Country | Link |
---|---|
US (1) | US134548A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2863631A (en) * | 1956-10-29 | 1958-12-09 | Grinnell Corp | Diaphragm valve |
-
0
- US US134548D patent/US134548A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2863631A (en) * | 1956-10-29 | 1958-12-09 | Grinnell Corp | Diaphragm valve |
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