US58092A - Improved apparatus for inserting fusible plugs in steam-generators - Google Patents
Improved apparatus for inserting fusible plugs in steam-generators Download PDFInfo
- Publication number
- US58092A US58092A US58092DA US58092A US 58092 A US58092 A US 58092A US 58092D A US58092D A US 58092DA US 58092 A US58092 A US 58092A
- Authority
- US
- United States
- Prior art keywords
- steam
- boiler
- ring
- rod
- generators
- 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
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 8
- 229910000743 fusible alloy Inorganic materials 0.000 description 6
- 206010022000 Influenza Diseases 0.000 description 4
- 210000001364 Upper Extremity Anatomy 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
- F22B37/47—Applications, arrangements, or dispositions of alarm or automatic safety devices responsive to abnormal temperature, e.g. actuated by fusible plugs
- F22B37/475—Safety devices with fusible plugs
Definitions
- JOSEPH FREN (1H, OF PITTSBURG, PENNSYLVANIA.
- (t is an ordinary cylindrical boiler, with two longitudinal ilues, b b', communicating with the furnace under the boiler in the ordinary manner.
- a metallic ring, c On the top of one of the iiues, b', is placed a metallic ring, c, which is screwed into a hole in the flue in such a manner that the cavity of the ring opens into the interior of the flue with its axis in a vertical position.
- the cavity or bore of the ring is circular, but smaller at bottom than at top, so as to form a coneseat for the plug of fusible alloy which is ininserted therein, as shown in Fig. 1.
- the upper portion of the ring c is hemispherical in shape, or a section of a sphere, although this is not necessary, as a conical shape would answer the same purpose.
- a cylindrical sleeve, d is inserted through a hole in the boiler, through which sleeve is passed the tubular rod e, which extends into the boiler far enough for its lower end to rest upon the top of the ring c, the end of the tubular rod being of such shape as to fit closely upon the ring, so as to make a steamtight joint.
- the rod e also extends a convenient distance above the top of the boiler, and has a hand-wheel, Z, attached to its upper extremity.
- the diameter of the bore of the tubular rod e is equal to the larger .diameter of the ring c, and a little greater than the larger diameter of the fusible plug n.
- the upper end of the tubular rod c is closed by a screw, f.
- the lower end of t-he sleeve d is capped for a short distance, so as to form a female screw, and corresponding screwthreads t" project from the exterior of the tubular rod e, so that it may be screwed down tightly upon the ring c, as shown in Fig. 2.
- That portion of the sleeve d which projects outside of the boiler is of smaller diameter than the lower part, which is within the boiler, and a follower-ring, g, placed around the sleeve d outside of the boiler, and a nut, h, screwed down around the upper part of the sleeve d, serve to keep it firmly in place and prevent the escape of steam.
- a stuffing-box, 7c is placed around the tubular rod e at the top of the sleeve d.
- this apparatus is as follows When the fusible plug has been blown out ofthe ring c, and it is desired to insertanother one, the tubular rod is screwed down into the upper surface of the ring c. This prevents the further escape of steam into the flue b', and also into the rod e. tubular rod e is then removed, and a plug of fusible alloy is inserted into the rod from the top, and falls down into the cavity of the ring c, being prevented from passing through into the flue by its tapering'shape. The hole in the top of the flue being thus closed, the rod c is screwed up a short-distance to the position shown in Fig.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Description
PATEN FFICE,
JOSEPH FREN (1H, OF PITTSBURG, PENNSYLVANIA.
i IMPROVED APPARATUS FOP INSERTING FUSiBLE PLUGS IN STEAM-GENERATORS.
Specification forming part of Letters Patent No. 58,092, dated September 18, 1866.
To all whom t may concern:V
Be it known that 1, JOSEPH FRENCH, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Mode of Replacing Fusible Plugs in Flues, and I do hereby declare the following to be afull, clear, and exact description thereof, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a section of a tubular boiler and an exterior view of my improved apparatus, excepting at the lower end, which is shown in section. Fig. 2 is a vertical section through t my apparatus and the boiler to which it is applied.
In both iigures the same letters of reference are used to denote similar parts.
It is a well-known device to insert a plug of fusible alloy in one of the flues of a steamboiler, the alloy being so composed of such ingredients and in such proportions as to melt whenever the temperature of the steam or water within the boiler becomes so great as to be unsafe, or whenever the water gets so low as to allow the fine to become overheated, the plug of alloy being placed in a hole in the flue, which, when the plug is removed, allows the water or steam from the interior of the boiler to enter the flue and extinguish the tires under the boiler. As it is necessary to replace they plug of alloy in the hole in the flue before the boilers can be filled above its level or steam raised therein, it is important to have a safe and convenient mode of inserting the plug without making any opening from without into the steam or water space of the boiler.
rlhis, then, is the object of my invention, which 1 shall proceed to describe:
In the drawings, (t is an ordinary cylindrical boiler, with two longitudinal ilues, b b', communicating with the furnace under the boiler in the ordinary manner. On the top of one of the iiues, b', is placed a metallic ring, c, which is screwed into a hole in the flue in such a manner that the cavity of the ring opens into the interior of the flue with its axis in a vertical position. The cavity or bore of the ring is circular, but smaller at bottom than at top, so as to form a coneseat for the plug of fusible alloy which is ininserted therein, as shown in Fig. 1. The
upper portion of the ring c is hemispherical in shape, or a section of a sphere, although this is not necessary, as a conical shape would answer the same purpose. Immediately above the ring c a cylindrical sleeve, d, is inserted through a hole in the boiler, through which sleeve is passed the tubular rod e, which extends into the boiler far enough for its lower end to rest upon the top of the ring c, the end of the tubular rod being of such shape as to fit closely upon the ring, so as to make a steamtight joint. The rod e also extends a convenient distance above the top of the boiler, and has a hand-wheel, Z, attached to its upper extremity. The diameter of the bore of the tubular rod e is equal to the larger .diameter of the ring c, and a little greater than the larger diameter of the fusible plug n. The upper end of the tubular rod c is closed by a screw, f. The lower end of t-he sleeve d is capped for a short distance, so as to form a female screw, and corresponding screwthreads t" project from the exterior of the tubular rod e, so that it may be screwed down tightly upon the ring c, as shown in Fig. 2.
That portion of the sleeve d which projects outside of the boiler is of smaller diameter than the lower part, which is within the boiler, and a follower-ring, g, placed around the sleeve d outside of the boiler, and a nut, h, screwed down around the upper part of the sleeve d, serve to keep it firmly in place and prevent the escape of steam. As a furtherI precaution to prevent the leakage of steam, a stuffing-box, 7c, is placed around the tubular rod e at the top of the sleeve d.
The operation of this apparatus is as follows When the fusible plug has been blown out ofthe ring c, and it is desired to insertanother one, the tubular rod is screwed down into the upper surface of the ring c. This prevents the further escape of steam into the flue b', and also into the rod e. tubular rod e is then removed, and a plug of fusible alloy is inserted into the rod from the top, and falls down into the cavity of the ring c, being prevented from passing through into the flue by its tapering'shape. The hole in the top of the flue being thus closed, the rod c is screwed up a short-distance to the position shown in Fig. 1, care being taken to replace the screw f in the top of the rod before-p the rod is raised, as otherwise the steam or The screwfou top of the hot Water from the boiler would rush up the bore of the rod e as soon as it was raised from the ring c. When the rod is in the position shown in Fig. 1, the steam or water has free access to the top of the plug` of alloy.
My improvement is applicable to locomotiveboilers as Well as to the ordinary description of steam-boilers constructed with iifues.
Having` thus described my improvement, what I claim as my invention, and desire t0 secure by Letters Patent, is-
The'combination of the ring c, for holding the fusible plug in the flue, the tubular rod c, and screw f, for closing the bore of the rod e, constructed and arranged substantially as and for the purposes hereinbefore described.
In testimony whereof the said JOSEPH FRENCH'hns hereunto set his hand.
JOSEPH FRENCH.
Witnesses:
W. D. LEWs, ALLAN C. BAKEWELL.
Publications (1)
Publication Number | Publication Date |
---|---|
US58092A true US58092A (en) | 1866-09-18 |
Family
ID=2127631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US58092D Expired - Lifetime US58092A (en) | Improved apparatus for inserting fusible plugs in steam-generators |
Country Status (1)
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US (1) | US58092A (en) |
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0
- US US58092D patent/US58092A/en not_active Expired - Lifetime
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