GB329760A - Improvements in maximum demand indicators for electric current - Google Patents

Improvements in maximum demand indicators for electric current

Info

Publication number
GB329760A
GB329760A GB9974/29A GB997429A GB329760A GB 329760 A GB329760 A GB 329760A GB 9974/29 A GB9974/29 A GB 9974/29A GB 997429 A GB997429 A GB 997429A GB 329760 A GB329760 A GB 329760A
Authority
GB
United Kingdom
Prior art keywords
float
maximum
demand
pointer
rod
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
GB9974/29A
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.)
JOHN EDWARD SPEIGHT
RECORD ELECTRICAL CO Ltd
Original Assignee
JOHN EDWARD SPEIGHT
RECORD ELECTRICAL 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 JOHN EDWARD SPEIGHT, RECORD ELECTRICAL CO Ltd filed Critical JOHN EDWARD SPEIGHT
Priority to GB9974/29A priority Critical patent/GB329760A/en
Publication of GB329760A publication Critical patent/GB329760A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/56—Special tariff meters
    • G01R11/60—Subtraction meters; Meters measuring maximum or minimum load hours

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

329,760. Speight, J. E., and Record Electrical Co., Ltd. March 28, 1929. Indicating maximum movements.-An electric maximum-demand indicating instrument is provided with a freely movable float having a loose connection with the maximum-demand pointer in order to prevent the pointer from wandering. The device may be constructed as an attachment for existing cover-plates. In one arrangement, Fig. 2, the float n is contained in a liquid-filled chamber d, the float rod k being carried by the spindle f of the maximum demand indicator i and passing freely through the float. A plate or pair of arms l is engaged frictionally by a disc or cup member o for setting purposes. In a modification, Fig. 4, the float comprises an open-ended vessel constructed so that the rod k does not come in contact with the liquid during its movement.
GB9974/29A 1929-03-28 1929-03-28 Improvements in maximum demand indicators for electric current Expired GB329760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9974/29A GB329760A (en) 1929-03-28 1929-03-28 Improvements in maximum demand indicators for electric current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9974/29A GB329760A (en) 1929-03-28 1929-03-28 Improvements in maximum demand indicators for electric current

Publications (1)

Publication Number Publication Date
GB329760A true GB329760A (en) 1930-05-29

Family

ID=9882193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9974/29A Expired GB329760A (en) 1929-03-28 1929-03-28 Improvements in maximum demand indicators for electric current

Country Status (1)

Country Link
GB (1) GB329760A (en)

Similar Documents

Publication Publication Date Title
GB329760A (en) Improvements in maximum demand indicators for electric current
GB811417A (en) Improvements in or relating to liquid level indicators
US1691084A (en) Device for indicating density of liquids
US1456517A (en) Measuring instrument
SU11593A1 (en) Oscilloscope attachment for recording distribution curves of electric or magnetic fields in space or electric current in a conductor
GB564181A (en) Electrical indicating instruments and scale adjustments therefor
GB331359A (en) Improvements in or relating to flowmeters
GB720223A (en) Improvements in liquid level indicators
GB345286A (en) Electric indicating device
GB404558A (en) Improvements in and relating to electrically operated gauges for indicating liquid levels
GB683742A (en) Level gauge, notably for gasoline
GB551517A (en) Improved method of and apparatus for measuring and indicating the level and/or quantity of liquid in a container
GB233666A (en) Improvements relating to the measurement of the flow of refrigerant in refrigerating machines
GB557866A (en) Improvements in dial gauges or indicators
GB566101A (en) Electrical indicating or recording systems
GB322558A (en) Improvements in electric meters
GB138430A (en) Apparatus for indicating the amount of electric current passing through a network-box link and the like
GB176672A (en) Electrical and magnetic polarity and sex indicator
GB623539A (en) Systems for indicating the effective age of electrical apparatus
GB137809A (en) Improvements in or relating to indicating devices
GB557474A (en) Improvements relating to electrical indicating instruments and systems
GB327030A (en) Improvements in or relating to indicating means for use with weighing apparatus
GB308321A (en) Improvements in and relating to the pointers or indicating devices of measuring instruments and apparatus
CA309547A (en) Electrical liquid level indicating instrument
GB188378A (en) Improvements in or relating to pressure gauges