GB1187557A - A Lifting Magnet for Sheet-Formed Objects of Magnetisable Material - Google Patents

A Lifting Magnet for Sheet-Formed Objects of Magnetisable Material

Info

Publication number
GB1187557A
GB1187557A GB2293468A GB2293468A GB1187557A GB 1187557 A GB1187557 A GB 1187557A GB 2293468 A GB2293468 A GB 2293468A GB 2293468 A GB2293468 A GB 2293468A GB 1187557 A GB1187557 A GB 1187557A
Authority
GB
United Kingdom
Prior art keywords
coils
inner
outer
magnetic
lifting
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
GB2293468A
Inventor
Jorgen Marcher
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.)
H Nielsen and Son Maskinfabrik AS
Original Assignee
H Nielsen and Son Maskinfabrik AS
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 H Nielsen and Son Maskinfabrik AS filed Critical H Nielsen and Son Maskinfabrik AS
Priority to GB2293468A priority Critical patent/GB1187557A/en
Publication of GB1187557A publication Critical patent/GB1187557A/en
Application status is Expired legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/20Electromagnets; Actuators including electromagnets without armatures
    • H01F7/206Electromagnets for lifting, handling or transporting of magnetic pieces or material

Abstract

1,187,557. Lifting electromagnets. H. NIELSEN & SON MASKINFABRIK A.S. 14 May, 1968, No. 22934/68. Heading H1P. A lifting electromagnet comprises two magnet coils carried in a yoke having a flat underside with annular polepieces and including an intermediate pole, common to the magnetic circuits of both coils, located between the coils and means being provided for reversing the current in one of the coils. As shown, Fig. 1, the magnet comprises two coils 1, 2 arranged to be independently energized and mounted in a yoke 3 which provides an inner polepiece 5, an outer polepiece 6, and an intermediate polepiece 7 having a magnetic cross-section of approximately one quarter that at each of the inner and outer polepieces. When the coils are energized in the same direction, Fig. 5 (not shown), a large lifting force is provided, the magnetic lines of force passing directly between the outer and inner poles through the load, the field in the intermediate pole being substantially zero. When the coils are energized in opposite directions, the magnetic lines of force pass through the load from both the inner and outer poles to the intermediate pole, the lifting force is reduced and the penetration of the magnetic field into the load is greatly reduced. The magnet may be used to lift a stack of steel sheets or to lift a single sheet from a stack by energizing the coils in the same or in opposite directions respectively.
GB2293468A 1968-05-14 1968-05-14 A Lifting Magnet for Sheet-Formed Objects of Magnetisable Material Expired GB1187557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2293468A GB1187557A (en) 1968-05-14 1968-05-14 A Lifting Magnet for Sheet-Formed Objects of Magnetisable Material

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB2293468A GB1187557A (en) 1968-05-14 1968-05-14 A Lifting Magnet for Sheet-Formed Objects of Magnetisable Material
DE19691921544 DE1921544B2 (en) 1968-05-14 1969-04-26
US3555474D US3555474A (en) 1968-05-14 1969-04-29 Lifting magnet for sheet-formed objects of magnetisable material
SE677369A SE355010B (en) 1968-05-14 1969-05-13
ES367702A ES367702A1 (en) 1968-05-14 1969-05-14 Improvements in magnetic devices manu- tencion.

Publications (1)

Publication Number Publication Date
GB1187557A true GB1187557A (en) 1970-04-08

Family

ID=10187430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2293468A Expired GB1187557A (en) 1968-05-14 1968-05-14 A Lifting Magnet for Sheet-Formed Objects of Magnetisable Material

Country Status (5)

Country Link
US (1) US3555474A (en)
DE (1) DE1921544B2 (en)
ES (1) ES367702A1 (en)
GB (1) GB1187557A (en)
SE (1) SE355010B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2226917A (en) * 1989-01-07 1990-07-11 Dowty Hydraulic Units Ltd "Fast response solenoid"

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2570866A1 (en) * 1984-09-24 1986-03-28 Commissariat Energie Atomique Electromagnet having several levels of portative force
DE3613565A1 (en) * 1986-04-18 1987-10-22 Mannesmann Ag Load lifting magnet
IT1212127B (en) * 1986-07-28 1989-11-08 Cardone Tecnomagnetica magnetopermanent Equipment anchor.
JPH0685631B2 (en) * 1990-03-09 1994-10-26 金沢大学長 The magnetic flux convergence type electromagnetic pump
IT1319065B1 (en) * 2000-10-27 2003-09-23 Sgm Spa Electromagnet for scrap handling ferromagnetic
US7828958B2 (en) * 2003-12-19 2010-11-09 Shell Oil Company Systems and methods of producing a crude product
ES2301313B1 (en) * 2005-11-25 2009-02-16 Felemamg, S.L. Tripolar electromagnet adaptable to the load position fix of the central poles poles.
US9704646B2 (en) 2011-05-18 2017-07-11 Hydro-Quebec Ferromagnetic metal ribbon transfer apparatus and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2226917A (en) * 1989-01-07 1990-07-11 Dowty Hydraulic Units Ltd "Fast response solenoid"

Also Published As

Publication number Publication date
SE355010B (en) 1973-04-02
ES367702A1 (en) 1971-04-16
DE1921544A1 (en) 1969-11-20
DE1921544B2 (en) 1975-11-13
US3555474A (en) 1971-01-12

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee