US465767A - Half to john b - Google Patents
Half to john b Download PDFInfo
- Publication number
- US465767A US465767A US465767DA US465767A US 465767 A US465767 A US 465767A US 465767D A US465767D A US 465767DA US 465767 A US465767 A US 465767A
- Authority
- US
- United States
- Prior art keywords
- rod
- piston
- cylinder
- water
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000010276 construction Methods 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
- G01F23/72—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means
- G01F23/74—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means for sensing changes in level only at discrete points
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Description
(No Model.)
F. ST. CLAIR. Low WATER ALARM.
Patented Dec. 22, 1891.
FRANK ST. CLAIR, OF MANCHESTER,
PATENT OFFICE.
NEIV HAMPSHIRE, ASSIGNOR OF ONE- I'IALF TO JOI-IN B. VARICK, OF SAME PLACE.
LOW-WATER ALARM.
SPECIFICATION forming part of Letters Patent No. 465,76*?, dated December 22, 1891.
Application nea April 11, 1891.
To all whom t may concern.-
Beit known that I, FRANK ST. CLAIR, residing at Manchester, in the county of Hillsborough and State of New Hampshire, have invented certain new and useful Improvements in Low-Tater Alarms, of which the following is a specilication.
This invention relates to an improved lowwater alarm for steam-boilers, andis adapted 1o to indicate visibly and audibly when the water reaches a certain level, and it is also adapted to sound an electric signal at any particular time and place.
With these objects n view my invention consists in the peculiar construction of the various parts and their novel combination or arrangement', all of which will be more fully hereinafter described and claimed.
In the drawings forming a part of this 2o specification, Figure l is a perspective view of my improved device. Fig. 2 is a central vertical section, and Fig. 3 is atop plan View.
In carrying out my invention I employ a cylinder A, which is connected with the boiler B by means of the water-pipe w and steampipe s. The heads of the cylinder are held on by the rods A', the upper portions of said rods extending a considerable distan ce above the top head, as clearly shown. Within the 3o cylinder is arranged a piston C, and connected with the same is a tubular piston-rod D, said rod passing through the top head of the cylinder, and upon its upper end is arranged a steam-whistle E. An aperture CZ is made in the tubular rod at a predetermined point, the purpose of which is to allow the steam to enter the rod and sound the whistle when the water in the boiler sinks, and allows the piston to descend until the aperture 4o d is within the cylinder.
A gage-plate F is connected with the boiler, and upon the opposite side of the cylinder is arranged an electric push-button G, and in connection therewith an elbow-lever G.
A horizontal pointer-arm H is secured to the tubular rod D a short distance below the whistle E, said arm being rigid with the rod D and sliding on the upper portions of the rods A', which act as guide-rods. One end of 5o the pointer-arm rests adjacent to the gage- Serial No. 388,569. (No model.)
plate F, and is adapted toindicate visibly the level of the water in the boiler, and the opposite end of the pointer-arm is adapted to engage the elbow-lever operating the electric push-button and sounding a signal at any particular place.
Any suitable number of push-buttons and connections may be arranged in connection with my apparatus to give any number of signals. 6o
From the above the operation and advantages of my device will b e apparent to every one skilled in the art to which it pertains.
Having thus described my invention, what I claim is* l. The combination, with the cylinder, the steam and water pipes communicating therewith, the piston, and tubular piston-rod provided with an aperture and with awhistle at its end, of a gage-plate, electrical alarm con- 7o nections, and a rod secured to the piston-rod and carrying an indicator at one end and an arm at the other adapted to close the electrical circuit, substantially as set forth.
2. The combination, with the cylinder, the steam and water pipes, the piston, and pistonrod provided with a whistle, and the guiderods projecting upwardly from the cylinder parallel with the piston-rod, of the gage-plate, the electrical alarm connections, the trans- 8o Verse rod carried by the piston and working upon the guide-rods, said transverse rod carrying an indicator at one end of an arm at the opposite end adapted to contact with the electrical'connections, substantially as and 85 for the purpose set forth.
3. The combination, with the cylinder, the steam and water pipe, the piston and pistonrod, and the guide-rods projecting upwardly from the cylinder parallelwiththe piston-rod, 9o of the gage-plate and the indicator carried by the. piston-rod and working upon the guiderods, substantially as and for the purpose set forth.
In testimony whereof I affix my signature in vpresence of two witnesses.
FRANK ST. CLAIR. lVitncsses:
JOHN C. BIcKFoRD, -ANNABEL MINARD.
Publications (1)
Publication Number | Publication Date |
---|---|
US465767A true US465767A (en) | 1891-12-22 |
Family
ID=2534632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US465767D Expired - Lifetime US465767A (en) | Half to john b |
Country Status (1)
Country | Link |
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US (1) | US465767A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4757305A (en) * | 1987-01-05 | 1988-07-12 | Dominic Peso | Water level indicator |
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0
- US US465767D patent/US465767A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4757305A (en) * | 1987-01-05 | 1988-07-12 | Dominic Peso | Water level indicator |
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