US123176A - Improvement in safety-valves - Google Patents
Improvement in safety-valves Download PDFInfo
- Publication number
- US123176A US123176A US123176DA US123176A US 123176 A US123176 A US 123176A US 123176D A US123176D A US 123176DA US 123176 A US123176 A US 123176A
- Authority
- US
- United States
- Prior art keywords
- valve
- safety
- valves
- pressure
- improvement
- 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
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/09—Safety devices
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/003—Safety valves; Equalising valves, e.g. pressure relief valves reacting to pressure and temperature
-
- 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
- Y10T137/7921—Weight coaxial with valve
Definitions
- Figure l is a vertical, and Fig. 2 a horizontal section of my improved safety-valve.n
- a in the drawing represents the valve-chamber, of cylindrical or other form.v lts lower end is connected with the steam-pipe B, that projects from the boiler.
- O is the valve, placed Within the chamber, and so shaped at the lower end as to nicely t its seat a at the upper end ofthe pipe B.
- D is the alarm-whistle or instrument placed on the top ofthe chamber A.
- the valve is smaller in diameter than the interior ot' the chamber A, and has three or more projecting ribs, b b. Between the ribs b are spaces d d, in which the steam can ascend to the whistle D Whenever the valveis open.
- the valve is made of a certain weight, to be raised only when a certain allowed degree of pressure in the boiler is exceeded.
- 1t may receive sectional or removable Weights, to be thereby regulated with exactness.
- a Weight E
- the valve When by an excess oi' pressure the valve is raised sniiiciently high to bring the bolts e e in line with an inner groove, g, or catch in the chamber A, the bolts will by their spring f be thrown into the groove or catch g and hold the Weight E suspended. This will relieve the valve from the weight E and reduce the pressure capacity. of the boiler.
- the bolts e and spring f may, ii' desired, be applied to the valve direct to hold it bodily suspended when once elevated.
- a certain boiler can with safety only carry, say, thirty pounds of steam pressure
- he will regulate the weight of valve C accordingly, and lock the chamber A. 1f the engineer by negligence permits the pressure to exceed thirty pounds the valve will be raised and the whistle blown. Immediate steps to reduce pressure will restore the valve toits former position; but if the excess of pressure is continued the valve will be elevated su-A ciently high to bring the bolts c in line with the groove g with stated eti'ect.
- valve G having4
Description
H. S. )EWELL &F. STEELE.
n Improvemenfin. Safety Valves. Ne., 123,176.
Patented Jan. 30, 1872: .Y
QL'gJ.
UNITED STATES PATENT OEEICE.
HERBERT S. JEVELL AND FERDINAND STEELE, OF BROOKLYN, NEW YORK.
IMPROVEMENT IN SAFETY-VALVES.
Specification forming part of Letters Patent No. 123,176, dated January 30, 1872.
Specification describing a new and Improved Safety-Valve and Alarm, invented by HER- BERT S. JEWELL and FERmNAND STEELE, of Brooklyn, in the county oi' Kings and State of New York.
Figure l is a vertical, and Fig. 2 a horizontal section of my improved safety-valve.n
The invention will first be fully described and then clearly pointed out in claim.
A in the drawing represents the valve-chamber, of cylindrical or other form.v lts lower end is connected with the steam-pipe B, that projects from the boiler. O is the valve, placed Within the chamber, and so shaped at the lower end as to nicely t its seat a at the upper end ofthe pipe B. D is the alarm-whistle or instrument placed on the top ofthe chamber A. The valve is smaller in diameter than the interior ot' the chamber A, and has three or more projecting ribs, b b. Between the ribs b are spaces d d, in which the steam can ascend to the whistle D Whenever the valveis open. The valve is made of a certain weight, to be raised only when a certain allowed degree of pressure in the boiler is exceeded. 1t may receive sectional or removable Weights, to be thereby regulated with exactness. Upon its top is placed a Weight, E, which rests loose. On the upper surface ofthe weight E are sliding bolts e e, which are by springs ff crowded against the periphery ofthe chamber A. When by an excess oi' pressure the valve is raised sniiiciently high to bring the bolts e e in line with an inner groove, g, or catch in the chamber A, the bolts will by their spring f be thrown into the groove or catch g and hold the Weight E suspended. This will relieve the valve from the weight E and reduce the pressure capacity. of the boiler. The bolts e and spring f may, ii' desired, be applied to the valve direct to hold it bodily suspended when once elevated. Thus, for example, when an inspector has ascertained that a certain boiler can with safety only carry, say, thirty pounds of steam pressure, he will regulate the weight of valve C accordingly, and lock the chamber A. 1f the engineer by negligence permits the pressure to exceed thirty pounds the valve will be raised and the whistle blown. Immediate steps to reduce pressure will restore the valve toits former position; but if the excess of pressure is continued the valve will be elevated su-A ciently high to bring the bolts c in line with the groove g with stated eti'ect. Then either the entire valve will be held elevated and the alarm continuously sounded, or, at least, -the weight E will be detached, and, say five or ten pounds, deducted from the pressure to be car- Orooves g, combined with valve G, having4
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US123176A true US123176A (en) | 1872-01-30 |
Family
ID=2192612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US123176D Expired - Lifetime US123176A (en) | Improvement in safety-valves |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US123176A (en) |
-
0
- US US123176D patent/US123176A/en not_active Expired - Lifetime
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