US56409A - Improvement in steam safety-valves - Google Patents
Improvement in steam safety-valves Download PDFInfo
- Publication number
- US56409A US56409A US56409DA US56409A US 56409 A US56409 A US 56409A US 56409D A US56409D A US 56409DA US 56409 A US56409 A US 56409A
- Authority
- US
- United States
- Prior art keywords
- spring
- valve
- valves
- improvement
- steam
- 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
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- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/067—Check valves with guided rigid valve members with guided stems stem guided at two or more points
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- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- 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
- Y10T137/7922—Spring biased
- Y10T137/7923—With means to protect spring from fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Description
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UNITED STATES EDWARD HAMILTON, OF CHICAGO, ILLINOIS.
IMPROVEMENT IN STEAM SAFETY-VALVES.
Specification forming part of Letters Patent No. 56,409, dated July 17, 1866. d
To all whom fit may concern:
Be it known that I, EDWARD HAMILTON, of the city of Chicago, in the county of Cook and State of Illinois, have invented a certain new and Improved Safety-Valve for Steam- Boilers; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being' had to the accompanying drawings, making a part of this specitication.
The nature ot' my invention consists in the construction of a safety-valve for steam-boilers in which the valve is held down by a spring inside of the case instead of the lever and weight ordinarily used outside, and in a novel method of adjusting the same, and in providing a means for testing it.
Figure lis a plan View of a portion detached. Fig. 2 is a top-plan view of the apparatus with the case opened. Fig. 3 is a side elevation, and Fig. I a vertical section of the saine, like letters in the various figures indicating like parts.
To enable others skilled in the art to make and use my invention, I will describe its construction and operation.
The outside shell or case, A and A', is made of iron, brass, or other suitable metal, and I prefer the globular form shown, although. it can be made to work equally as well in any other form. The lower half is cast with a tube, H, attached, which tube is inserted into the boiler in the usual manner. To the upper end ot' this tube, at the shoulders j, the valve c is fitted. This valve c is supported and held in place by the shaft F, which shat't is kept in position by the cross-barf in the tube or pipe H, through which it passes at the lower end, and at the upper it passes through the plate O centrally and up into the spring box or cylinder D about one-third the length of the cylinder. Inside of the cylinder there is a small plate, b, attached and resting upon a shoulder of the shaft, which plate b supports the lower end of the spring a.
About midway between the valve e and the small plate b, I attach to the shaft the annular projection d, and under this I place the inner end of the testing-lever Gr. This lever has for its fulcrum the shell or case A, and projects outward so as to form a handle, so that by pressing upon this lever the engineer can at all times ascertain the working condition of the valve without opening the case or shell.
On the top of the lower half or hemisphere 0f the globe I place the plate C, Figs. l and 4, and on this I place the spring cylinder or box D, which is made large enough to contain a spring, a. This spring may be either a coiled, spiral, or volute spring; and although very little, if any, steam will penetrate the box or cylinder, as it is closely attached to the plate G, it may be found advisable to galvanize or otherwise protect the spring from corroding, although it will last a long time without any protection in this respect.
The pressure of the spring upon the valve c is regulated and adjusted by the gage-screw E, which screw passes through the upper end of the spring-box D and presses against the plate c in the upper end ot' the cylinder and above the spring. As this screw is turned down it compresses the spring, so that the pressure which is transmitted through the shaft F to the val ve c can be regulated or gaged to any required degree of pressure or resistance. When the required degree is obtained the cup B is brought to place and locked by the hasp t, staple h, and lock g. It will be obvious that other forms than the padlock can be used.
I have not given dimensions, as the device will require to be made in a variety of sizes, and is increased or diminished. About the proportions given in thedrawings will be sut'- ticient. Variations will not, however, impair its working. Its operation will be readily understood from the drawings.
When the pressure in the boiler rises above the degree to which the spring a is set by the screw E the valve c will lift, when the steam will pass into the shell or case and out at I. By these Ameans I am enabled to produce a safety-valve that can be inclosed and locked up securely, the condition ot' which can be at all times tested, and that is specially adapted for use on marine engines.
Having thus described my invention, what I claim isl. The combination and arrangement of the valve c, provided with the stem F, spiral sprin g a, and set-screw E with the case D, all located within the case A, as shown and described.
2. In combination with the valve c, arranged as set forth, the lever G, arrau ged to operate as set forth.
EDVARD HAMILTON.
W'itnesses:
D. J. LYON, E. A. WEstr.
Publications (1)
Publication Number | Publication Date |
---|---|
US56409A true US56409A (en) | 1866-07-17 |
Family
ID=2125949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US56409D Expired - Lifetime US56409A (en) | Improvement in steam safety-valves |
Country Status (1)
Country | Link |
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US (1) | US56409A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2680347A (en) * | 1950-05-10 | 1954-06-08 | Borg Warner | Hydraulic jack |
US2917273A (en) * | 1955-06-06 | 1959-12-15 | Clarence A Best | Gear-actuated reciprocating valve construction |
US3604452A (en) * | 1968-02-05 | 1971-09-14 | Robert A Daniels | Pressure control device |
US20060122911A1 (en) * | 2000-11-08 | 2006-06-08 | Matsushita Electric Industrial Co., Ltd. | E-commerce system and method |
US20100223186A1 (en) * | 2000-04-11 | 2010-09-02 | Hogan Edward J | Method and System for Conducting Secure Payments |
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0
- US US56409D patent/US56409A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2680347A (en) * | 1950-05-10 | 1954-06-08 | Borg Warner | Hydraulic jack |
US2917273A (en) * | 1955-06-06 | 1959-12-15 | Clarence A Best | Gear-actuated reciprocating valve construction |
US3604452A (en) * | 1968-02-05 | 1971-09-14 | Robert A Daniels | Pressure control device |
US20100223186A1 (en) * | 2000-04-11 | 2010-09-02 | Hogan Edward J | Method and System for Conducting Secure Payments |
US20060122911A1 (en) * | 2000-11-08 | 2006-06-08 | Matsushita Electric Industrial Co., Ltd. | E-commerce system and method |
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