GB780879A - Improvements in or relating to pneumatically actuated apparatus for producing an output signal dependent on two input signals - Google Patents

Improvements in or relating to pneumatically actuated apparatus for producing an output signal dependent on two input signals

Info

Publication number
GB780879A
GB780879A GB9327/55A GB932755A GB780879A GB 780879 A GB780879 A GB 780879A GB 9327/55 A GB9327/55 A GB 9327/55A GB 932755 A GB932755 A GB 932755A GB 780879 A GB780879 A GB 780879A
Authority
GB
United Kingdom
Prior art keywords
bellows
baffle
arm
pressure
nozzle
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
Application number
GB9327/55A
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.)
Schneider Electric Systems USA Inc
Original Assignee
Foxboro Co
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 Foxboro Co filed Critical Foxboro Co
Publication of GB780879A publication Critical patent/GB780879A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid-Driven Valves (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

780,879. Fluid-pressure servomotor-control systems. FOXBORO CO. March 30, 1955 [April 16, 1954], No. 9327/55. Class 135. The invention relates to a pneumatic control system comprising a control valve constituted by a nozzle 15, Fig. I, and co-operating hinged baffle 10, and three pressure-responsive elements 16, 18, 27 of which elements 16, 18 act in opposite senses on the baffle and element 27 acts on one of the other elements (16) to vary the distance of that element from the pivot of the baffle. Pressure air is supplied to the nozzle past a restriction 23, and the nozzle back-pressure is taken off at 25 for control purposes. An input signal is fed into bellows 16, and the pressure in line 25 is fed into bellows 18 to act as a negative feed-back. The pressure in bellows 27 sets the ratio between the effects due to the pressures in the other two bellows, and the pressure in bellows 27 may be representative of a variable condition. The spring 29 loading bellows 27 may be replaced by a pressureresponsive bellows. Baffle 10 is loaded by springs 13, 14. In a practical embodiment, the bellows 16, Figs. IV and VI, is carried by an arm 38 which is pivoted by leaf springs 37 to a fixed post 36. The bellows extends through a bracket 47 welded to arm 38 and acts on baffle 10 through the intermediary of an arm 40 which is pivoted to arm 38 by means of crossed leaf springs 39, 39b. Arm 40 carries a roller 41 and it is this roller which makes the actual contact between arm 40 and baffle 10. Bellows 27 and spring 29 are carried on fixed supports in the casing and they act on arm 38 as shown. Bellows 18 (not shown) acts upwardly on the underside of baffle 10 and is situated between nozzle 15 and a leaf spring 11 on which the distant end of the baffle is pivoted. Specification 591,270 is referred to.
GB9327/55A 1954-04-16 1955-03-30 Improvements in or relating to pneumatically actuated apparatus for producing an output signal dependent on two input signals Expired GB780879A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US780879XA 1954-04-16 1954-04-16

Publications (1)

Publication Number Publication Date
GB780879A true GB780879A (en) 1957-08-07

Family

ID=22141826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9327/55A Expired GB780879A (en) 1954-04-16 1955-03-30 Improvements in or relating to pneumatically actuated apparatus for producing an output signal dependent on two input signals

Country Status (1)

Country Link
GB (1) GB780879A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1140730B (en) * 1956-10-29 1962-12-06 Sunvic Controls Ltd Fluid-operated computing device
CN114778179A (en) * 2022-04-22 2022-07-22 金川集团股份有限公司 Geological survey sampling device capable of avoiding soil falling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1140730B (en) * 1956-10-29 1962-12-06 Sunvic Controls Ltd Fluid-operated computing device
CN114778179A (en) * 2022-04-22 2022-07-22 金川集团股份有限公司 Geological survey sampling device capable of avoiding soil falling

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