US106821A - George m - Google Patents
George m Download PDFInfo
- Publication number
- US106821A US106821A US106821DA US106821A US 106821 A US106821 A US 106821A US 106821D A US106821D A US 106821DA US 106821 A US106821 A US 106821A
- Authority
- US
- United States
- Prior art keywords
- valve
- tube
- steam
- water
- alarm
- 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 24
- 241000272168 Laridae Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 230000000717 retained Effects 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
- F22B37/428—Feed-water supply alarm devices using dilatation of solids or liquids
Definitions
- Our invention relates to the combination of a safetyvalve andexpansion-tube, provided with an air-chamber, in such a way that, when there is a deciency of water in vthe boiler, the expansion of the. tube-raises A t h e -valve and admits steam to the whistle, and, when there is an over pressure-of steam in theboiler, the valve will rise independently of the expansion-tube.
- the object of this invention is to furnish a reliable means ot' 'giving an alarm when the water becomes low in the boiler, or when the ⁇ safety-valve fails to act from any cause.
- Figure 1 is an elevation of the apparatus, with the whistle and' weighted arm of the safety-valve removed..
- Figure 2 is a view ot' the safety-vulve, whistle, and connections.
- Ik is un expansiOn-tnbe,made ot' any suit-able materia B is an air-chamber attached to or connectedwith thetube A.
- O is a small safety-valve, of ordinary construction, except that the valve-stem d is threaded, and is provided with the nut e.
- the F is a rod attached to the upper end ofthetube A, the lower end Of which is bent out at a right angle, and'is provided with a hoIe, through which the valvestem d passes.
- the nut e is-above the bent portion of the rod F.
- the weighted lever G has its t'ulcrnm at H, andbears upon the valve-stem d.
- the whistle I is'vconnected with the valvev C in such a way that the steam which escapes the valve sounds :the alarm Athrough it.
- J is an air-cock, which admits of letting the water down from the tube A.
- the lower end of the tube A is connected with the boiler'at the lower-try-cock, as in the drawing, r at any other suitable place.
- K is a pipe which conducts steam to the valve C.
- the rod F The nut e is fitted- Onthe stern, so that the rod is retained thereon, and thereby bears against the nut when the'tnbe expands, and thus the valve isv opened.
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Description
waited tatra @wat l Gtiiyiirr.
GEORGE M. HOPKINS AND JOHN A. STRAIGHT, or ALBION, NEWNYORK.
Letters Patent No. 106,821, dated August 30, 1870;y enteric-ted. August 13, 1870.
LOWWATER AND HIGH-PRESSURE INDICATOR The Schedule referred to in these Letters' Patent and making part'ofthe same We, GEORGE M. HOPKINS and JOHN A. STRAIGHT, of AlbiOn, in the county of Orleans and State of New York, have invented a certain Improvement in Lowwater Indicators an'd Pressure-Alarms', of which the following is a specification.
Nature and Objectlof the Invention.
Our invention relates to the combination of a safetyvalve andexpansion-tube, provided with an air-chamber, in such a way that, when there is a deciency of water in vthe boiler, the expansion of the. tube-raises A t h e -valve and admits steam to the whistle, and, when there is an over pressure-of steam in theboiler, the valve will rise independently of the expansion-tube.
The object of this invention is to furnish a reliable means ot' 'giving an alarm when the water becomes low in the boiler, or when the `safety-valve fails to act from any cause.A
Description ofthe Accompanying Drawing.
,Figure 1 is an elevation of the apparatus, with the whistle and' weighted arm of the safety-valve removed..
Figure 2 is a view ot' the safety-vulve, whistle, and connections.
General Description.
Ik is un expansiOn-tnbe,made ot' any suit-able materia B is an air-chamber attached to or connectedwith thetube A.
O is a small safety-valve, of ordinary construction, except that the valve-stem d is threaded, and is provided with the nut e.
F is a rod attached to the upper end ofthetube A, the lower end Of which is bent out at a right angle, and'is provided with a hoIe, through which the valvestem d passes. The nut e is-above the bent portion of the rod F.
By reference to Iig. 2 it will be seen that the weighted lever G has its t'ulcrnm at H, andbears upon the valve-stem d. The whistle I is'vconnected with the valvev C in such a way that the steam which escapes the valve sounds :the alarm Athrough it.
J is an air-cock, which admits of letting the water down from the tube A. The lower end of the tube A is connected with the boiler'at the lower-try-cock, as in the drawing, r at any other suitable place.
K is a pipe which conducts steam to the valve C.
The operation is as follows:- j
When the water in the boiler is above the point at which the indicator is attached, the tube A is full of water, and remains cool; but when the water drops below the point at which the indicator is attached, the water in thetube A gradually runs back into the boiler, and steam enters, heating and, consequently, expanding it, raising the valve C by means of the rod F, when steam passes through thewhistle I, giving an alarm, which continues until the water is again -above the point at which the indicator is attached,`
when the water again fills the tube A, and, cooling, allows the tube to contract, when the valve C closes and the alarm ceases. Should the steam at any time rise above" the limit at which the Valve C is Weighted, .it will rise indepeudently ofthe tube A, and the escaping steam willA give the alarm through the whistle I.
As previously described, it will be seen that the -stem ot' the double alarm-valve projects beyond the shell or casing, and is embraced by the lower end ot.
the rod F. The nut e is fitted- Onthe stern, so that the rod is retained thereon, and thereby bears against the nut when the'tnbe expands, and thus the valve isv opened.
When the tube cools and contracts, the -rod. is lowered, and allows the weight which rests on the stem to close the valve.
We are aware that expansible "tubes, connected by non-expansible tubes or rods to the. alarm-valve, have been in use, for the purpose Ot sounding an alarm in the -event'otlow water in the.- boilcr; but, asifar as we are aware; such tubes, when provided with an airchamber, in the manner hereinbefore indicated, have not been used in connection witha valve that-could he raised by the steam pressure within the boiler.
. We are also aware thatit has been proposed to connect an expansible tube with'an alarm-valve, in such away that the valve can be raised not only by the 'expansion ot' suchtube upon the admission ot' steam thereto when the water in the boiler has -fallen g. to low-water mark, but also bythe pressure of steam within the boiler; but,so far as we know, the exe pansible tube hasy not been connectedrto the valve in the manner herein shown; nor has an'air-chamber,
vtor the purpose hereinbefore specified, been used in Witnesses H. M. HOPKINS, HORACE B. DOOLITTLE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US106821A true US106821A (en) | 1870-08-30 |
Family
ID=2176297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US106821D Expired - Lifetime US106821A (en) | George m |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US106821A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040134818A1 (en) * | 2003-01-15 | 2004-07-15 | Cunningham Ian W. | Modular toolbox system |
-
0
- US US106821D patent/US106821A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040134818A1 (en) * | 2003-01-15 | 2004-07-15 | Cunningham Ian W. | Modular toolbox system |
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