US146314A - Improvement in safety-valves - Google Patents
Improvement in safety-valves Download PDFInfo
- Publication number
- US146314A US146314A US146314DA US146314A US 146314 A US146314 A US 146314A US 146314D A US146314D A US 146314DA US 146314 A US146314 A US 146314A
- Authority
- US
- United States
- Prior art keywords
- valve
- nut
- seat
- improvement
- valves
- 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
- 230000000875 corresponding Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 230000003292 diminished Effects 0.000 description 2
Images
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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/105—Closing devices introduced radially into the pipe or hose
-
- 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
- Y10T137/598—With repair, tapping, assembly, or disassembly means
- Y10T137/6065—Assembling or disassembling reciprocating 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
- Y10T137/598—With repair, tapping, assembly, or disassembly means
- Y10T137/6109—Tool for applying or removing valve or valve member
- Y10T137/6113—Including sealing feature
-
- 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
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7904—Reciprocating valves
- Y10T137/7908—Weight biased
- Y10T137/7909—Valve body is the weight
Definitions
- the nature of this invention relates to an improvement in that class of safety-valves which are provided with two faces inclined to each other and seating against corresponding faces in the valve-seat; and its object is to provide an adjustable outer seat, which can be adjusted with relation to the outer face of the valve, to partially arrest the outflow of the escaping steam, which, thus acting upon an increased valve area, lifts the valve to a full opening; and it consists inaclamp-nut threaded on the outside of the valve-seat collar and provided with a seat, as more fully hereinafter set forth.
- a face of the collar is screw-threaded to receive a clamp-nut, 0, having its upper end chamfered to form an inclined seat, 0, the valve being provided with a corresponding face, 0.
- the nut is provided with alug, d, which, after thethread is cut in the nut, is slit, and a screw, 0, tapped transversely through both parts, and by means of which the nut may be immova bl y clamped in place on the collar of the valveseat.
- the nut should be so adjusted as to bring its seat a barely into contact with the face 0 of the valve when seated, and then clamped fast in that position, in which it will not interfere with the seating of the valve upon the horizontal inner seat I), so that, whenever the pressure upon the valve exceeds its load, it will lift a little, and the outflow of the steam being retarded or partially arrested by the diminished area of opening between the seat and face a c as compared with the opening between b 1), thereby offering an increased valve area to the steam pressure, the valve will at once lift to a full opening, and, when the boilerpressure falls below the load of the valve, the
- valve may be first faced to the nut, and the latter be run down to allow the valve to be ground to its proper seat, after which the nut is adjusted to serve as a chokeoif for the escaping steam, as hereinbefore described.
- the adjustable clamp-nut G screwed on the collar a exterior to the valve-seat b, and provided with the inclined seat 0, in combination with the an gular-faced valve B, substantially as and for the purpose set forth.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Turbines (AREA)
Description
UNITED STATES QFFIGE.
HIRAM r. cAsn, 0F DETROIT, AND ROBERT P. BAILLIE, or rnnavsnune,
MICHIGAN.
IMPROVEMENT IN SAFETY-VALVES.
Specification forming part of Letters Patent No. 146,314., dated January 13, 1874 application filed December 16,1873.
To all whom it may concern:
Be it known that we, HIRAM P. CASE, of Detroit, in the county of Wayne, and ROBERT P. BAILLIE, of Ferrysburg, in the county of Ottawa and State of Michigan, have invented an Improvement in Safety-Valves, of which the following is a specification:
The nature of this invention relates to an improvement in that class of safety-valves which are provided with two faces inclined to each other and seating against corresponding faces in the valve-seat; and its object is to provide an adjustable outer seat, which can be adjusted with relation to the outer face of the valve, to partially arrest the outflow of the escaping steam, which, thus acting upon an increased valve area, lifts the valve to a full opening; and it consists inaclamp-nut threaded on the outside of the valve-seat collar and provided with a seat, as more fully hereinafter set forth.
face of the collar is screw-threaded to receive a clamp-nut, 0, having its upper end chamfered to form an inclined seat, 0, the valve being provided with a corresponding face, 0. The nut is provided with alug, d, which, after thethread is cut in the nut, is slit, and a screw, 0, tapped transversely through both parts, and by means of which the nut may be immova bl y clamped in place on the collar of the valveseat.
The nut should be so adjusted as to bring its seat a barely into contact with the face 0 of the valve when seated, and then clamped fast in that position, in which it will not interfere with the seating of the valve upon the horizontal inner seat I), so that, whenever the pressure upon the valve exceeds its load, it will lift a little, and the outflow of the steam being retarded or partially arrested by the diminished area of opening between the seat and face a c as compared with the opening between b 1), thereby offering an increased valve area to the steam pressure, the valve will at once lift to a full opening, and, when the boilerpressure falls below the load of the valve, the
latter will immediately seat itself, and thus prevent any unnecessary blowing ofl.
In thus describing the action of such a valve, we do not wish to be considered as claimants of the invention thereof in this connection; but we include such description for the purpose of more fully showing the advantage of our ad-f the manufacturer to ease off the outer valveface before the inner one could be ground to lts seat, and necessitating tests under steam to in sure accuracy in operation.
With our improvement the valve may be first faced to the nut, and the latter be run down to allow the valve to be ground to its proper seat, after which the nut is adjusted to serve as a chokeoif for the escaping steam, as hereinbefore described.
We are well aware that a plain nut with a jam-nut under it may be used in place of the clamp-nut C; but the jam-nut would be objectionable and inconvenient on account of the projecting stud-bolts which secure the yoke, or a lock-up case, if one be used, and which would render it diflieult to turn the said jamnut, besides increasing the height of the seatcollar.
What we claim as our invention, and desire to secure by Letters Patent, is
The adjustable clamp-nut G, screwed on the collar a exterior to the valve-seat b, and provided with the inclined seat 0, in combination with the an gular-faced valve B, substantially as and for the purpose set forth.
HIRAM P. CASE. ROBERT P. BAILLIE.
ANDW. TI-rOMsoN.
Publications (1)
Publication Number | Publication Date |
---|---|
US146314A true US146314A (en) | 1874-01-13 |
Family
ID=2215728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US146314D Expired - Lifetime US146314A (en) | Improvement in safety-valves |
Country Status (1)
Country | Link |
---|---|
US (1) | US146314A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3836115A (en) * | 1973-08-30 | 1974-09-17 | Vapor Corp | Variable length valve |
US20050025947A1 (en) * | 2000-03-20 | 2005-02-03 | Sun Edward I. | Conformable and die-cuttable biaxially oriented films and labelstocks |
-
0
- US US146314D patent/US146314A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3836115A (en) * | 1973-08-30 | 1974-09-17 | Vapor Corp | Variable length valve |
US20050025947A1 (en) * | 2000-03-20 | 2005-02-03 | Sun Edward I. | Conformable and die-cuttable biaxially oriented films and labelstocks |
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