US89992A - Improvement in pressure-gauge for hydrostatic presses - Google Patents
Improvement in pressure-gauge for hydrostatic presses Download PDFInfo
- Publication number
- US89992A US89992A US89992DA US89992A US 89992 A US89992 A US 89992A US 89992D A US89992D A US 89992DA US 89992 A US89992 A US 89992A
- Authority
- US
- United States
- Prior art keywords
- pressure
- gauge
- improvement
- valve
- hydrostatic presses
- 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
- 230000002706 hydrostatic Effects 0.000 title description 4
- 241000658540 Ora Species 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/16—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of pistons
Definitions
- Figure 2 is an elevation, showing the stirrup and ⁇ fthe pump or press, or any suitable apparatus, the pis- ⁇ ton A rises as the pressureincrealses, contracting the spring B until the ⁇ stud-pin D engages With the stirrup i D, instantly raising thecheck-valve E.
Description
'lutrd N bittet l @sind @Wina relief-valve.
' 'THOMAsHARBOTTLn orA BROOKLYN, NEW YORK.y Lnmlant No. 89,992, dazed May 11. 1869.
IMPROVEMENT PRESSURE-GAG-E `FOR HYDROSTATIC PRESSED.
The Schedule referred to in these `Lettrs Patent and `making part of the same.
` To all whom' it concern: i
l specification.
In the drawings- 'Figure l represents a sectional view, as the only clear method of showing the arrangement and the working of the gauge. y
Figure 2 is an elevation, showing the stirrup and `fthe pump or press, or any suitable apparatus, the pis- `ton A rises as the pressureincrealses, contracting the spring B until the `stud-pin D engages With the stirrup i D, instantly raising thecheck-valve E.
The pressure being constant ou check-valve E, it
closes as soon as the pressure is relieved, thereby acting as a safety-valve, as well as a pressure-indicator.
' In those devices where the pressure-piston is made to serve also the purpose of an escape-valve, as heretofore used, the resistance is so lgreat that the current `of steam or water passing its edge will rapidly out it away, and its action will in a short time vary materially from the desired' indication by the register; and` A until the desired pressure is attained, when it is raised by the stud C, lifting it by means of the slotted stirrup D, and as there is a fractional amount of pressure on the top of the valve E, as compared with that on the under side of the piston A, together with the downward current of the escape through the valve, both' tending to close it, the moment the piston A is relieved of the surplus pressure, the valve E promptly closes. What I yclaim as my invention, and desire to secure by Letters Patent, is-
The pressure-indicating piston A, combined withrent of the escape have a tendency to close said valve, l
as andfor the purpose set forth.
Witnesses: THOS. HARBOTTLE.
f GHAs. E. FROST,
` A. G. J oNEs;
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US89992A true US89992A (en) | 1869-05-11 |
Family
ID=2159472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US89992D Expired - Lifetime US89992A (en) | Improvement in pressure-gauge for hydrostatic presses |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US89992A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050224855A1 (en) * | 2004-04-13 | 2005-10-13 | Chung-Shi Liu | Via recess in underlying conductive line |
-
0
- US US89992D patent/US89992A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050224855A1 (en) * | 2004-04-13 | 2005-10-13 | Chung-Shi Liu | Via recess in underlying conductive line |
| US20100159693A1 (en) * | 2004-04-13 | 2010-06-24 | Taiwan Semiconductor Manufacturing Company, Ltd. | Method of Forming Via Recess in Underlying Conductive Line |
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