GB253916A - - Google Patents

Info

Publication number
GB253916A
GB253916A GB15175/26A GB1517526A GB253916A GB 253916 A GB253916 A GB 253916A GB 15175/26 A GB15175/26 A GB 15175/26A GB 1517526 A GB1517526 A GB 1517526A GB 253916 A GB253916 A GB 253916A
Authority
GB
United Kingdom
Prior art keywords
pulp
motor
supply
cells
galvanometer
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
GB15175/26A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB253916A publication Critical patent/GB253916A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
    • G01J1/1626—Arrangements with two photodetectors, the signals of which are compared
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2499—Mixture condition maintaining or sensing
    • Y10T137/2509—By optical or chemical property

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

253,916. British Thomson-Houston Co., Ltd., (Assignees of Whitney, W. R.). June 19, 1925, [Convention date]. Pulp, regulating flow and consistency of.- Apparatus is described in connection with the pulp supply devices for paper-making for automatically maintaining the density of the pulp supply constant, by means of photo-electric apparatus. In place of a single photo-electric cell. for the determination of light intensities, two cells are utilized having a common source of energy to supply to potential across the cells, in conjunction with a single source of light. One cell 10 receives light through a known filter 16 and the other cell 11 receives light through a filter 6 containing the substance to be tested. The cells are so connected that the currents produced in them are opposed and indicated on a galvanometer 13. The pump from the tank 1 and water from the pipe 2 are pumped' by the pump 5 past the transparent window 6 to the papermaking machine, and electric control means are provided actuated through a relay from the galvanometer 13 to control the valve 7 governing the supply of water to the tank 1 so that the density of the pulp supply is substantially constant. Variation of the pulp density causes the current produced to move the galvanometer needle and close a circuit through the relay 18 or 19 energizing one of the coils 20, 21 and thus actuating one of the switches 22, 23 to start the motor 25 to open or close the valve 7. The winding connected across the armature of the motor 25 controls the operation of switch 27 which governs a dynamic breaking resistor 28 to stop the motor 25 promptly. In a modification resistances are inserted on the operation of the relay apparatus in the armature circuit of the motor 25 to vary the speed.
GB15175/26A 1925-06-19 1926-06-16 Expired GB253916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38377A US1794222A (en) 1925-06-19 1925-06-19 Photo-electric system

Publications (1)

Publication Number Publication Date
GB253916A true GB253916A (en) 1926-09-16

Family

ID=21899591

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15175/26A Expired GB253916A (en) 1925-06-19 1926-06-16

Country Status (2)

Country Link
US (1) US1794222A (en)
GB (1) GB253916A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529450A (en) * 1942-08-03 1950-11-07 Bailey Meter Co Measuring and controlling system
US2437715A (en) * 1943-11-29 1948-03-16 Don M Hawley Consistency control
US2569127A (en) * 1946-07-06 1951-09-25 Shell Dev Refractive index measurement of fluids
US2588981A (en) * 1948-03-12 1952-03-11 William L Hole Photoelectric fluid inspection and control device
US2645461A (en) * 1948-08-26 1953-07-14 Socony Vacuum Oil Co Inc Thermoregulator
US2694335A (en) * 1948-11-23 1954-11-16 Du Pont Photometric analyzer
US2560107A (en) * 1949-06-04 1951-07-10 Lessells And Associates Inc Automatic chemical testing apparatus
US2648809A (en) * 1949-06-16 1953-08-11 Connelly Inc Automatic device for controlling gas and air mixtures
US2654242A (en) * 1950-07-07 1953-10-06 Shell Dev Measurement of water vapor in gases
US2885923A (en) * 1954-08-13 1959-05-12 Phillips Petroleum Co Reflection refractometer
US3102155A (en) * 1955-02-16 1963-08-27 Technicon Instr Background compensation for spectrometers used in quantitative spectrochemical studies
US2953440A (en) * 1956-06-15 1960-09-20 Phillips Petroleum Co Analyzer and control apparatus
US3117490A (en) * 1961-02-13 1964-01-14 Eastman Kodak Co Photographic exposure meter
US3232711A (en) * 1962-08-17 1966-02-01 Gulf Research Development Co Carbon-on-catalyst analytic apparatus
US3498719A (en) * 1965-02-18 1970-03-03 Continental Can Co Photoelectric consistency indicator for pulp
US3502965A (en) * 1966-03-04 1970-03-24 Dow Chemical Co Control apparatus and system
US3493764A (en) * 1967-11-09 1970-02-03 Logetronics Inc Automatic focusing apparatus using a diffusing element
US3712203A (en) * 1969-11-15 1973-01-23 Iwatsu Electric Co Ltd Automatic control device for the toner concentration within a developer in an electrostatic copy machine
US3722559A (en) * 1971-04-07 1973-03-27 Pitney Bowes Sage Inc Optical monitoring chamber unit for toner density controls

Also Published As

Publication number Publication date
US1794222A (en) 1931-02-24

Similar Documents

Publication Publication Date Title
GB253916A (en)
US1996233A (en) Automatic measuring apparatus
ES332651A1 (en) Apparatus to determine the characteristics of fibers in the manufacture of paper. (Machine-translation by Google Translate, not legally binding)
GB694765A (en) Improvements in or relating to apparatus for controlling a refiner
GB495893A (en) Improvements in or relating to the starting of direct current motors
US1778198A (en) Safety liquid feed
GB917331A (en) Sensing device for controlling the concentration of fibre suspensions
SU371289A1 (en) METHOD OF REGULATING LIQUID CONCENTRATION
GB307822A (en) Improvements in and relating to paper making machines
US2661551A (en) Protective device
GB407660A (en) Improvements in or relating to electric motor control systems
GB357654A (en) Improvements in and relating to fluid-break electric circuit interrupters
GB193405A (en) Improvements in and relating to vapour or steam generators or boilers
GB245500A (en) Improvements relating to winding or hoisting systems
SU467036A1 (en) The method of quality control of magnetic water treatment
GB391425A (en) Improvements in means for indicating the level of water in boilers and/or for controlling the supply of feed water thereto
GB337719A (en)
GB216807A (en) Improvements in or relating to electric braking mechanism
GB299789A (en) Improvements in and relating to electrical regulators
GB383285A (en) Improvements in or relating to electrically-heated boilers
GB502944A (en) Improvements in and relating to method of and means for making paper
GB359467A (en)
GB516407A (en) Improvements in apparatus for measuring the consistency or viscosity of liquid substances
GB445772A (en) Improvements in and relating to electric motor control systems
GB372736A (en) Method of heating diaphragm needles for recording sounds