GB686887A - Improvements relating to devices for indicating the maximum value of a variable force - Google Patents
Improvements relating to devices for indicating the maximum value of a variable forceInfo
- Publication number
- GB686887A GB686887A GB8239/51A GB823951A GB686887A GB 686887 A GB686887 A GB 686887A GB 8239/51 A GB8239/51 A GB 8239/51A GB 823951 A GB823951 A GB 823951A GB 686887 A GB686887 A GB 686887A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nut
- worm
- spring
- piston
- arm
- 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
Links
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
- G01L7/02—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 elastically-deformable gauges
- G01L7/06—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 elastically-deformable gauges of the bellows type
- G01L7/063—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 elastically-deformable gauges of the bellows type with mechanical transmitting or indicating means
-
- 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
- G01L7/166—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 with mechanical transmitting or indicating means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
686,887. Pressure gauges. SULZER FRERES SOC. ANON. April 9, 1951 [Jan. 18, 1951], No. 8239/51. Class 106 (ii). A device for indicating the maximum value of a variable force comprises a non-rotatable piston 12, Fig. 1, movable by the force against a spring 16, the piston 12 having an axially extending arm 17 threaded at its end into a nut 20, the arm 17 and the nut 20 forming a normally reversible worm and nut mechanism so that an axial pressure applied to the worm can cause the nut to rotate, if free to do so. The nut 20 is capable of only limited axial movement and is normally in engagement with a fixed seating 15. Whenever the spring 16 is compressively displaced by a further amount, the nut 20 is lifted from its seat 15 and rotates to allow the arm 17 to pass therethrough, the amount of such rotation being indicated by a head 21 rotating with the nut 20 and acting as a scale relatively to a fixed mark 23. When the compressive action on the spring 16 ceases to increase and tends to decrease, the nut 20 engages its seat 15 and locks the worm and nut mechanism to prevent a return movement of the parts. The upward axial movement of the nut 20 is limited by a thrust bearing 26 carried by the nut 20, the bearing 26 engaging an upper end member 28 when the nut 20 is sufficiently displaced. The bearing 26 is such as to allow the nut 20 to rotate freely. The piston 12 is prevented from turning by two pins 13 sliding in slots 14 in the device. In Fig. 2, balls 30 are disposed between the nut 201 and the threaded arm 17<SP>1</SP> to decrease frictional resistance. Also, the spindle 17<SP>1</SP> and the spring 16<SP>1</SP> are housed in a pressuretight bellows 31 to ensure that the pressures to be measured act only on the underside of the piston 12<SP>1</SP>. The provision of a weak spring 32 acting downwardly on the nut 20<SP>1</SP> ensures that a rapid locking of the nut 20<SP>1</SP> will occur at the instant after attaining maximum pressure. The worm element 17 of the worm and nut mechanism may be a rod of non-circular cross-section twisted helically about its own axis and co-operating with a correspondingly shaped aperture in the nut element 20.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH686887X | 1951-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB686887A true GB686887A (en) | 1953-02-04 |
Family
ID=4528934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8239/51A Expired GB686887A (en) | 1951-01-18 | 1951-04-09 | Improvements relating to devices for indicating the maximum value of a variable force |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB686887A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3245259A (en) * | 1963-11-21 | 1966-04-12 | Adolf M Werbowetzki | Depth gauge plug |
| US4060050A (en) * | 1975-08-29 | 1977-11-29 | Aktiebolaget Electrolux | Fill indicator for a vacuum cleaner dust collector |
| WO2016008278A1 (en) * | 2014-07-18 | 2016-01-21 | 格力休闲体育用品有限公司 | Pressure gauge |
| US10247639B2 (en) * | 2017-01-21 | 2019-04-02 | Ravi Parmanand Bhojwani | Pressure indicator for automotive radiator, senses a predefined pressure and flags off a permanent trigger |
| US11287349B2 (en) * | 2019-05-31 | 2022-03-29 | Pti Technologies, Inc. | Burst-duct detection system |
-
1951
- 1951-04-09 GB GB8239/51A patent/GB686887A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3245259A (en) * | 1963-11-21 | 1966-04-12 | Adolf M Werbowetzki | Depth gauge plug |
| US4060050A (en) * | 1975-08-29 | 1977-11-29 | Aktiebolaget Electrolux | Fill indicator for a vacuum cleaner dust collector |
| WO2016008278A1 (en) * | 2014-07-18 | 2016-01-21 | 格力休闲体育用品有限公司 | Pressure gauge |
| US10247639B2 (en) * | 2017-01-21 | 2019-04-02 | Ravi Parmanand Bhojwani | Pressure indicator for automotive radiator, senses a predefined pressure and flags off a permanent trigger |
| US11287349B2 (en) * | 2019-05-31 | 2022-03-29 | Pti Technologies, Inc. | Burst-duct detection system |
| US11788922B2 (en) | 2019-05-31 | 2023-10-17 | Pti Technologies, Inc. | Burst-duct detection system |
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