GB461203A - Improvements in or relating to electromagnets for lifting and other purposes - Google Patents

Improvements in or relating to electromagnets for lifting and other purposes

Info

Publication number
GB461203A
GB461203A GB2803235A GB2803235A GB461203A GB 461203 A GB461203 A GB 461203A GB 2803235 A GB2803235 A GB 2803235A GB 2803235 A GB2803235 A GB 2803235A GB 461203 A GB461203 A GB 461203A
Authority
GB
United Kingdom
Prior art keywords
condenser
winding
switch
supply
electromagnets
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
GB2803235A
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.)
Equipment & Engineering Compan
Original Assignee
Equipment & Engineering Compan
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 Equipment & Engineering Compan filed Critical Equipment & Engineering Compan
Priority to GB2803235A priority Critical patent/GB461203A/en
Publication of GB461203A publication Critical patent/GB461203A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

461,203. Control systems for electromagnets. EQUIPMENT & ENGINEERING CO., Ltd., and SWIFT, H. B. Oct. 11, 1935, No. 28032. [Classes 35 and 38 (iv)] [Also in Groups XXIII and XXXVI] Condenser arrangements; switching control.-The remanent magnetism of a magnetic chuck, lifting- grab, or flaw-detecting device is neutralized by passing the discharge current of a condenser through the winding of the apparatus, a switch being provided to enable the condenser to be charged when the winding is energized and to reverse the connections between the winding and condenser when the supply is disconnected. In the form shown, the winding A of the electromagnetic device is energized from the supply and the condenser E is connected in parallel with it when the switch B is thrown upwards. When the switch is thrown downwards to disconnect the winding from the supply, the condenser is connected across the winding but with its connections reversed so that the condenser discharge current demagnetizes the material. Additional condensers may be used if required. Instead of the switch shown, a hand or foot operated frum switch may be used.
GB2803235A 1935-10-11 1935-10-11 Improvements in or relating to electromagnets for lifting and other purposes Expired GB461203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2803235A GB461203A (en) 1935-10-11 1935-10-11 Improvements in or relating to electromagnets for lifting and other purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2803235A GB461203A (en) 1935-10-11 1935-10-11 Improvements in or relating to electromagnets for lifting and other purposes

Publications (1)

Publication Number Publication Date
GB461203A true GB461203A (en) 1937-02-12

Family

ID=10269158

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2803235A Expired GB461203A (en) 1935-10-11 1935-10-11 Improvements in or relating to electromagnets for lifting and other purposes

Country Status (1)

Country Link
GB (1) GB461203A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528446A (en) * 1947-07-07 1950-10-31 Bell Telephone Labor Inc Current control circuit
US2615945A (en) * 1950-09-20 1952-10-28 Dynamatic Corp Field control of electromagnetic couplings
US2692353A (en) * 1950-10-14 1954-10-19 Warner Electric Brake & Clutch Control for electromagnets
US2702333A (en) * 1951-03-22 1955-02-15 Air Reduction Arc welding apparatus
US3164753A (en) * 1956-03-13 1965-01-05 Magnaflux Corp Magnetic chuck demagnetizer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528446A (en) * 1947-07-07 1950-10-31 Bell Telephone Labor Inc Current control circuit
US2615945A (en) * 1950-09-20 1952-10-28 Dynamatic Corp Field control of electromagnetic couplings
US2692353A (en) * 1950-10-14 1954-10-19 Warner Electric Brake & Clutch Control for electromagnets
US2702333A (en) * 1951-03-22 1955-02-15 Air Reduction Arc welding apparatus
US3164753A (en) * 1956-03-13 1965-01-05 Magnaflux Corp Magnetic chuck demagnetizer

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