GB803273A - Improvements in electrical controlling apparatus - Google Patents

Improvements in electrical controlling apparatus

Info

Publication number
GB803273A
GB803273A GB754855A GB754855A GB803273A GB 803273 A GB803273 A GB 803273A GB 754855 A GB754855 A GB 754855A GB 754855 A GB754855 A GB 754855A GB 803273 A GB803273 A GB 803273A
Authority
GB
United Kingdom
Prior art keywords
coil
proportional
current
variable
force
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
GB754855A
Other languages
English (en)
Inventor
Robert James Redding
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.)
Evershed and Vignoles Ltd
Original Assignee
Evershed and Vignoles 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 Evershed and Vignoles Ltd filed Critical Evershed and Vignoles Ltd
Priority to GB754855A priority Critical patent/GB803273A/en
Priority to FR1148884D priority patent/FR1148884A/fr
Publication of GB803273A publication Critical patent/GB803273A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/012—Automatic controllers electric details of the transmission means
    • G05B11/013—Automatic controllers electric details of the transmission means using discharge tubes
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B35/00—Other machines for working soil not specially adapted for working soil on which crops are growing
    • A01B35/02—Other machines for working soil not specially adapted for working soil on which crops are growing with non-rotating tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Level Indicators Using A Float (AREA)
  • Magnetically Actuated Valves (AREA)
GB754855A 1955-03-15 1955-03-15 Improvements in electrical controlling apparatus Expired GB803273A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB754855A GB803273A (en) 1955-03-15 1955-03-15 Improvements in electrical controlling apparatus
FR1148884D FR1148884A (fr) 1955-03-15 1956-03-15 Appareil électrique de contrôle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB754855A GB803273A (en) 1955-03-15 1955-03-15 Improvements in electrical controlling apparatus

Publications (1)

Publication Number Publication Date
GB803273A true GB803273A (en) 1958-10-22

Family

ID=9835245

Family Applications (1)

Application Number Title Priority Date Filing Date
GB754855A Expired GB803273A (en) 1955-03-15 1955-03-15 Improvements in electrical controlling apparatus

Country Status (2)

Country Link
FR (1) FR1148884A (fr)
GB (1) GB803273A (fr)

Also Published As

Publication number Publication date
FR1148884A (fr) 1957-12-17

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