US3135843A - Manometer with contacts having means providing for adjustable ranges - Google Patents

Manometer with contacts having means providing for adjustable ranges Download PDF

Info

Publication number
US3135843A
US3135843A US122831A US12283161A US3135843A US 3135843 A US3135843 A US 3135843A US 122831 A US122831 A US 122831A US 12283161 A US12283161 A US 12283161A US 3135843 A US3135843 A US 3135843A
Authority
US
United States
Prior art keywords
cam
pressure
support
manometer
housing
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
Application number
US122831A
Inventor
Margerie Andre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3135843A publication Critical patent/US3135843A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0026—Transmitting or indicating the displacement of flexible, deformable tubes by electric, electromechanical, magnetic or electromagnetic means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26—Details
    • H01H35/2607—Means for adjustment of "ON" or "OFF" operating pressure
    • H01H35/2614—Means for adjustment of "ON" or "OFF" operating pressure by varying the bias on the pressure sensitive element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26—Details
    • H01H35/2607—Means for adjustment of "ON" or "OFF" operating pressure
    • H01H35/2635—Means for adjustment of "ON" or "OFF" operating pressure by adjustment of a motion transmitting system
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20582—Levers
    • Y10T74/2063—Stops
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • the present invention relates to manometers.
  • This invention which applies particularly to a manometer with a deformable vessel such as a Bourdon tube, provides a manometer including an element movable in correspondence with variations in the pressure of a fluid,
  • the manometer further including a pivoted lever biased into contact with a control cam of range to be measured by another cam'acting on the microswitch support, this cam being controlled by a knob provided with an indicator for the specific ranges of operation.
  • FIG.,1 is a plan view of an embodiment of the'apparatus
  • FIG. 2 is a separate view of the stepped sector cam on a larger scale than that of FIG. 1.
  • the Bourdon tube T is subjected to the pressure to be measured through a connection R onto which it is fastened.
  • the free end of this tube is connected by a link B to the tail V of a stepped sectorcam S, pivotable about aspindle O.
  • This tail' V is formed with a slot C permitting the angular movement of the cam to be adjusted as a function of the pressure.
  • the stepped sector cam S shown separately in FIG. 2, comprises a succession of arcs about center 0 and with successively increasing radii in the clockwise direction, separated by inclinesE. There are as many arcs as there are pressure ranges to be measured; in the case of FIG. 2, four ranges are shown, going respectively, for example, from 0 to 0.5, from 0.5 to 2.5, from 2.5 to 5.5,
  • a microswitch 1 comprises a control lever .L, carrying at one end a cam follower D arranged to bear on the profile of the stepped sector cams.
  • the unit comprising the microswitch is pivoted at X and biased by a return spring F into contact with a pivoted cam G having the same number of regions as the steppedsector cam has of arcs of different radii.
  • the spindle of this cam is integral with a control knob which comprises an indicator H movable relatively to reference indicia marked on the dial the distances of the successive steps of the cam G from its pivotal axis increasing progressively in one direction. Each of these indicia corresponds to a testing range of the manometer.
  • the apparatus shown in FIG. 1 does not include a pressure indicator needle, but such a member indicating the pressure on a dial could be added, driven by an appropriate mechanism.
  • the apparatus operates as follows: when the indicator H is set at the chosen indicium, 2 for example, the unit formed by the microswitch and its lever will occupy a position such that said micro-interrupter will operate when, under the action of pressure increase in the tube T, the stepped sector cam S moves in' the sense of the arrow 1 until the incline 2a of the cam, corresponding to the chosen reference, displaces the lever L and actuates the microswitch; at this moment the circuit is closed, and will remain so until the pressure drops to a value corresponding to the position 1a of the incline of the stepped sector cam S; in this position la the lever L will be able to swing sufficiently to make the circuit re-open.
  • microswitch Since the microswitch is set up as a reversing device, the order of opening and closing the circuit can be reversed.
  • a manometer including a housing, a support within the housing, a pressure-sensitive movable element mounted on said support, means to apply to the element fluid of which the pressure is to be measured, a multistepped cam pivotally-mounted on said support, the steps being a at progressively increasing distances from the axis, means connecting the pressure-sensitive movable element to the cam whereby pressure variations cause pivotal movement of the cam, a lever pivoted to the support, a control cam pivotally mounted on the support, said control cam having a peripheral portion which gradually approaches the axis of the cam from one end of the portion to the other thereof, means extending from the housing for manually adjusting the control cam, means biasing the pivoted lever into contact with a step on the control cam so that pivotal movement of the control cam is effected to vary the inclination of the lever, and electrical microswitch mounted on the pivoted lever, a switch-operating lever extending from the pivoted lever and having one end bearing on the multistepped cam whereby the microswitch is operated by the multistepped cam

Description

June 2, 1964 A. MARGERIE MANOMETER wn'a CONTACTS HAVING MEANS PROVIDI FOR AD TABLE RANGES F 1 July 1961 United States Patent 3,135,843 MANOMETER WITH CONTACTS HAVING MEANS PROVIDING FOR ADJUSTABLE RANGES Andre Margerie, 30 Rue Jacquart, Pantin, Seine, France Filed July 10, 1961, Ser. No. 122,831
Claims priority, application France Aug. 16, 1960 3 Claims. (Cl. ZOO-81.8)
The present invention relates to manometers.
This invention, which applies particularly to a manometer with a deformable vessel such as a Bourdon tube, provides a manometer including an element movable in correspondence with variations in the pressure of a fluid,
movements of the element resulting in pivoting of a multistepped cam, the manometer further including a pivoted lever biased into contact with a control cam of range to be measured by another cam'acting on the microswitch support, this cam being controlled by a knob provided with an indicator for the specific ranges of operation.
The accompanying drawing illustrates, by way of example, the application of such a device to a manometer with a Bourdon tube.
FIG.,1 is a plan view of an embodiment of the'apparatus, and
FIG. 2 is a separate view of the stepped sector cam on a larger scale than that of FIG. 1.
The Bourdon tube T is subjected to the pressure to be measured through a connection R onto which it is fastened. The free end of this tube is connected by a link B to the tail V of a stepped sectorcam S, pivotable about aspindle O. This tail' V is formed with a slot C permitting the angular movement of the cam to be adjusted as a function of the pressure.
The stepped sector cam S, shown separately in FIG. 2, comprises a succession of arcs about center 0 and with successively increasing radii in the clockwise direction, separated by inclinesE. There are as many arcs as there are pressure ranges to be measured; in the case of FIG. 2, four ranges are shown, going respectively, for example, from 0 to 0.5, from 0.5 to 2.5, from 2.5 to 5.5,
and from 5.5 to 10.0.
A microswitch 1 comprises a control lever .L, carrying at one end a cam follower D arranged to bear on the profile of the stepped sector cams.
The unit comprising the microswitch is pivoted at X and biased by a return spring F into contact with a pivoted cam G having the same number of regions as the steppedsector cam has of arcs of different radii. The spindle of this cam is integral with a control knob which comprises an indicator H movable relatively to reference indicia marked on the dial the distances of the successive steps of the cam G from its pivotal axis increasing progressively in one direction. Each of these indicia corresponds to a testing range of the manometer.
* 3,135,843 Patented June 2, 1964 ice Flexible leads connect the microswitchterminals to current supply terminals projecting outside the case of the manometer.
The apparatus shown in FIG. 1 does not include a pressure indicator needle, but such a member indicating the pressure on a dial could be added, driven by an appropriate mechanism.
The apparatus operates as follows: when the indicator H is set at the chosen indicium, 2 for example, the unit formed by the microswitch and its lever will occupy a position such that said micro-interrupter will operate when, under the action of pressure increase in the tube T, the stepped sector cam S moves in' the sense of the arrow 1 until the incline 2a of the cam, corresponding to the chosen reference, displaces the lever L and actuates the microswitch; at this moment the circuit is closed, and will remain so until the pressure drops to a value corresponding to the position 1a of the incline of the stepped sector cam S; in this position la the lever L will be able to swing sufficiently to make the circuit re-open.
The same action will take place in the various positions in which the indicator H is set.
Since the microswitch is set up as a reversing device, the order of opening and closing the circuit can be reversed.
I claim:
1. A manometer including a housing, a support within the housing, a pressure-sensitive movable element mounted on said support, means to apply to the element fluid of which the pressure is to be measured, a multistepped cam pivotally-mounted on said support, the steps being a at progressively increasing distances from the axis, means connecting the pressure-sensitive movable element to the cam whereby pressure variations cause pivotal movement of the cam, a lever pivoted to the support, a control cam pivotally mounted on the support, said control cam having a peripheral portion which gradually approaches the axis of the cam from one end of the portion to the other thereof, means extending from the housing for manually adjusting the control cam, means biasing the pivoted lever into contact with a step on the control cam so that pivotal movement of the control cam is effected to vary the inclination of the lever, and electrical microswitch mounted on the pivoted lever, a switch-operating lever extending from the pivoted lever and having one end bearing on the multistepped cam whereby the microswitch is operated by the multistepped cam at a step determined by the setting of the control cam.
2. A manometer as claimed in claim 1, in which the pressure-sensitive movable element is a deformable vessel.
3. A device as defined by claim 1 in which the said peripheral portion of the control cam is in the form of steps corresponding'in number to that of the stepped cam.
References Cited in the file of this patent UNITED STATES PATENTS 1,074,137 Schubert Sept. 30, 1913 1,290,928 Denison Jan. 14, 1919 2,420,282 Bowditch May 6, 1947 2,537,771 Lovett Jan. 9, 1951 2,540,444 Harland Feb. 6, 1951 FOREIGN PATENTS 423,495 Germany Jan. 8, '1926

Claims (1)

1. A MANOMETER INCLUDING A HOUSING, A SUPPORT WITHIN THE HOUSING, A PRESSURE-SENSITIVE MOVABLE ELEMENT MOUNTED ON SAID SUPPORT, MEANS TO APPLY TO THE ELEMENT FLUID OF WHICH THE PRESSURE IS TO BE MEASURED, A MULTISTEPPED CAM PIVOTALLY-MOUNTED ON SAID SUPPORT, THE STEPS BEING AT PROGRESSIVELY INCREASING DISTANCES FROM THE AXIS, MEANS CONNECTING THE PRESSURE-SENSITIVE MOVABLE ELEMENT TO THE CAM WHEREBY PRESSURE VARIATIONS CAUSE PIVOTAL MOVEMENT OF THE CAM, A LEVER PIVOTED TO THE SUPPORT, A CONTROL CAM PIVOTALLY MOUNTED ON THE SUPPORT, SAID CONTROL CAM HAVING A PERIPHERAL PORTION WHICH GRADUALLY APPROACHES THE AXIS OF THE CAM FROM ONE END OF THE PORTION TO THE OTHER THEREOF, MEANS EXTENDING FROM THE HOUSING FOR
US122831A 1960-08-16 1961-07-10 Manometer with contacts having means providing for adjustable ranges Expired - Lifetime US3135843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR3135843X 1960-08-16

Publications (1)

Publication Number Publication Date
US3135843A true US3135843A (en) 1964-06-02

Family

ID=9692359

Family Applications (1)

Application Number Title Priority Date Filing Date
US122831A Expired - Lifetime US3135843A (en) 1960-08-16 1961-07-10 Manometer with contacts having means providing for adjustable ranges

Country Status (2)

Country Link
US (1) US3135843A (en)
DE (1) DE1236825B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101640134A (en) * 2008-08-01 2010-02-03 Abb技术股份有限公司 Cam disc and spring deflection switch and a spring-loaded drive

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1074137A (en) * 1912-02-26 1913-09-30 Frederick Schubert Pressure-alarm gage.
US1290928A (en) * 1917-05-03 1919-01-14 Minneapolis Heat Regulator Company Thermo circuit-closer.
DE423495C (en) * 1923-10-21 1926-01-08 Fritz H Hellmuth Dr Ing Electrical switching device
US2420282A (en) * 1944-04-21 1947-05-06 Foxboro Co Pressure operated switch
US2537771A (en) * 1946-01-08 1951-01-09 Lovett Victor Sydney Sprinkler alarm switch
US2540444A (en) * 1948-04-30 1951-02-06 American Machine & Metals Pressure-indicating gauge closing switches at selected pressures

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803718A (en) * 1953-05-15 1957-08-20 Douglas Aircraft Co Inc Pressure controlled device
FR1146271A (en) * 1956-03-26 1957-11-08 Applic Mach Motrices Pressure detector
DE1792237U (en) * 1959-03-14 1959-07-16 Alexander Wiegand Armaturen U CONTACT PRESSURE GAUGE WITH MICRO SWITCH.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1074137A (en) * 1912-02-26 1913-09-30 Frederick Schubert Pressure-alarm gage.
US1290928A (en) * 1917-05-03 1919-01-14 Minneapolis Heat Regulator Company Thermo circuit-closer.
DE423495C (en) * 1923-10-21 1926-01-08 Fritz H Hellmuth Dr Ing Electrical switching device
US2420282A (en) * 1944-04-21 1947-05-06 Foxboro Co Pressure operated switch
US2537771A (en) * 1946-01-08 1951-01-09 Lovett Victor Sydney Sprinkler alarm switch
US2540444A (en) * 1948-04-30 1951-02-06 American Machine & Metals Pressure-indicating gauge closing switches at selected pressures

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101640134A (en) * 2008-08-01 2010-02-03 Abb技术股份有限公司 Cam disc and spring deflection switch and a spring-loaded drive
KR20110042064A (en) * 2008-08-01 2011-04-22 에이비비 테크놀로지 아게 Cam disc and spring deflection switch for a spring-loaded drive and spring-loaded drive
US20110168533A1 (en) * 2008-08-01 2011-07-14 Abb Technology Ag Cam disk and spring excursion switch for a stored-energy spring mechanism and stored-energy spring mechanism
US8410386B2 (en) * 2008-08-01 2013-04-02 Abb Technology Ag Cam disk and spring excursion switch for a stored-energy spring mechanism and stored-energy spring mechanism
CN101640134B (en) * 2008-08-01 2014-06-25 Abb技术股份有限公司 Cam disc and spring deflection switch and a spring-loaded drive

Also Published As

Publication number Publication date
DE1236825B (en) 1967-03-16

Similar Documents

Publication Publication Date Title
US2789430A (en) Contact pressure measuring apparatus
US3135843A (en) Manometer with contacts having means providing for adjustable ranges
US2834953A (en) Pressure indicating system
US3683135A (en) Signaling mechanism for gauges
US2248878A (en) Measuring instrument
US4885845A (en) Inner diameter measuring machine
US3533294A (en) Directly settable controller
US2437774A (en) Direct reading photoelectric exposure meter
US3356944A (en) Decimal and range indicating means for electrical measuring apparatus
US2366454A (en) Timer switch
US3631435A (en) Tornado sensing device
US2966073A (en) Control device
US4054763A (en) Pressure switch and gauge
US3225622A (en) Condition responsive device
US3069910A (en) Bourdon tube pressure gauge
US3529768A (en) Digit wheels and preset counters utilizing the same
US2718573A (en) Means for simultaneously controlling a multiplicity of thermostatic heat and pressure control units
US2043441A (en) Double adjustment control
GB1396823A (en) Microswitch devices
US1809898A (en) Controlling apparatus
GB697182A (en) Improvements in indicating and controlling devices operated by changes in temperature or pressure
US3401573A (en) Relay device with adjustment means
US2720787A (en) Multirange pressure gauge
US1002877A (en) Fluid-pressure gage.
GB1331171A (en) Temperature responsive circuit control instrument