GB444786A - Magnetic holder and support - Google Patents

Magnetic holder and support

Info

Publication number
GB444786A
GB444786A GB20951/35A GB2095135A GB444786A GB 444786 A GB444786 A GB 444786A GB 20951/35 A GB20951/35 A GB 20951/35A GB 2095135 A GB2095135 A GB 2095135A GB 444786 A GB444786 A GB 444786A
Authority
GB
United Kingdom
Prior art keywords
short
pole shoes
circuiting
magnet
magnets
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
GB20951/35A
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.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of GB444786A publication Critical patent/GB444786A/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
    • H01F7/02—Permanent magnets [PM]
    • H01F7/04—Means for releasing the attractive force

Abstract

444,786. Magnetic chucks. BAERMANN, M., 30, Deutscher Ring, and DYNAMIT AKT.- GES. VORM. A. NOBEL & CO., Troisdorf Bez, both in Cologne, Germany. July 23, 1935, No. 20951. Convention date, July 23, 1934. [Class 60] [See also Group XXXV] A support or holder particularly for an electric lamp comprises a system of permanent bar magnets of high coercive force and soft iron pole shoes, a short-circuiting device movable out of action being provided in the space between the pole shoes and the magnets or the magnet itself being movable between the holding poles and a short-circuiting armature. In the form shown in Fig. 1, two magnets 1 abut against pole shoes 3 terminating in polepieces 11. Each polepiece is divided and bevelled as shown in Fig. 3 so that the holder can cooperate with a surface of any shape. A short-' circuiting armature 7 is slidable in non-magnetic guides 8 so that it rests on extensions 6 of the pole shoes 3 and thus short-circuits the magnets, or it can be withdrawn from the extension by means of a bolt 9 which when rotated by a thumb-piece 10 is raised by the action of a pin 43 on the curved surface of the cover plate 4. The lower part of the casing is closed by a non-magnetic plate 12. In a modification, Fig. 8, the pole shoes 17 are U-shaped, the short limbs abutting against the magnet 15. The short-circuiting armature 19 is adapted to bear against the bends 18 of the pole shoes. In a further modification, the magnet is attached to short polepieces and is movable by a cam or screw so that these polepieces bear either against the holding poles or against a short-circuiting armature. Alternatively, the magnet position may be changed by rotation. When a large holding surface or great strength is required as in chucks, a number of magnet systems may be mounted in a non-magnetic plate and separate short-circuiting armatures or a single spring armature may be controlled by cams to cause the magnet systems to be short-circuited and released in succession. As described, magnets and U-shaped polepieces similar to those shown in Fig. 8 are employed in this embodiment.
GB20951/35A 1934-07-23 1935-07-23 Magnetic holder and support Expired GB444786A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE444786X 1934-07-23

Publications (1)

Publication Number Publication Date
GB444786A true GB444786A (en) 1936-03-27

Family

ID=6537661

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20951/35A Expired GB444786A (en) 1934-07-23 1935-07-23 Magnetic holder and support

Country Status (1)

Country Link
GB (1) GB444786A (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750523C (en) * 1938-10-11 1945-02-05 Permanent magnet chuck
US2492238A (en) * 1947-11-21 1949-12-27 Raymond B Roof Magnetic stand with adjustable shunt
US2549371A (en) * 1949-01-05 1951-04-17 Union Switch & Signal Co Electrical relay
US2572514A (en) * 1948-02-18 1951-10-23 Russell E Phelon Holder for articles of magnetic material
US2656127A (en) * 1949-06-08 1953-10-20 Western Electric Co Apparatus for locking cop tubes on cop winding machines
US2697804A (en) * 1950-11-15 1954-12-21 Russell E Phelon Holder for articles of magnetic material
DE932621C (en) * 1936-10-11 1955-09-05 Max Baermann Magnetic holding device with a permanent magnet and soft iron pole pieces
DE967514C (en) * 1951-01-19 1957-11-14 Deutsche Edelstahlwerke Ag Permanent magnetic gripping tool
US2915682A (en) * 1956-01-26 1959-12-01 Neill James & Co Sheffield Ltd Lifting magnets
DE1118574B (en) * 1954-05-20 1961-11-30 Deutsche Edelstahlwerke Ag Switchable permanent magnetic adhesive device
US3164756A (en) * 1962-05-16 1965-01-05 Nix Steingroeve Elektro Physik Adjustable permanent magnet
DE977273C (en) * 1951-04-23 1965-09-09 Philips Nv Ferromagnetic core pre-magnetized by a permanent magnet with adjustable pre-magnetization
US3226832A (en) * 1963-11-12 1966-01-04 William B Fell Linearity testing gauge
FR2409223A1 (en) * 1977-11-22 1979-06-15 British Steel Corp Magnetically operated lifting device - has permanent magnets whose field is modified by movable pole piece and seal extending across gap between fixed pole pieces
FR2552259A1 (en) * 1983-09-15 1985-03-22 Vavasseur Michel Magnet-unit with detachment mechanism and its method of manufacture
EP0280435A2 (en) * 1987-02-24 1988-08-31 Richard Edward Thomson Adjustable quick release magnetic holding assembly
FR2706881A1 (en) * 1993-06-24 1994-12-30 Braillon Magnetique Sa
WO1999038726A1 (en) * 1998-02-02 1999-08-05 Perry John Underwood A securing device
WO2009050481A2 (en) * 2007-10-17 2009-04-23 Mra Technology Limited Imaging plate support for recording of radiographs
US20130222091A1 (en) * 2012-02-28 2013-08-29 Correlated Magnetics Research, Llc System for detaching a magnetic structure from a ferromagnetic material
US20140104022A1 (en) * 2009-06-02 2014-04-17 Correlated Magnetics Research, Llc Intelligent magnetic system
US9067290B2 (en) 2010-05-25 2015-06-30 Ixtur Oy Attaching device, attaching arrangement and method for attaching an object to be worked to a working base
CN108555798A (en) * 2018-05-28 2018-09-21 中国电子科技集团公司第四十三研究所 A kind of bonding fixture and mechanical arm
US11482359B2 (en) * 2020-02-20 2022-10-25 Magnetic Mechanisms L.L.C. Detachable magnet device
US20220415552A1 (en) * 2020-02-20 2022-12-29 Jeffery M. Eliason Detachable magnet device

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE932621C (en) * 1936-10-11 1955-09-05 Max Baermann Magnetic holding device with a permanent magnet and soft iron pole pieces
DE750523C (en) * 1938-10-11 1945-02-05 Permanent magnet chuck
US2492238A (en) * 1947-11-21 1949-12-27 Raymond B Roof Magnetic stand with adjustable shunt
US2572514A (en) * 1948-02-18 1951-10-23 Russell E Phelon Holder for articles of magnetic material
US2549371A (en) * 1949-01-05 1951-04-17 Union Switch & Signal Co Electrical relay
US2656127A (en) * 1949-06-08 1953-10-20 Western Electric Co Apparatus for locking cop tubes on cop winding machines
US2697804A (en) * 1950-11-15 1954-12-21 Russell E Phelon Holder for articles of magnetic material
DE967514C (en) * 1951-01-19 1957-11-14 Deutsche Edelstahlwerke Ag Permanent magnetic gripping tool
DE977273C (en) * 1951-04-23 1965-09-09 Philips Nv Ferromagnetic core pre-magnetized by a permanent magnet with adjustable pre-magnetization
DE1118574B (en) * 1954-05-20 1961-11-30 Deutsche Edelstahlwerke Ag Switchable permanent magnetic adhesive device
US2915682A (en) * 1956-01-26 1959-12-01 Neill James & Co Sheffield Ltd Lifting magnets
US3164756A (en) * 1962-05-16 1965-01-05 Nix Steingroeve Elektro Physik Adjustable permanent magnet
US3226832A (en) * 1963-11-12 1966-01-04 William B Fell Linearity testing gauge
FR2409223A1 (en) * 1977-11-22 1979-06-15 British Steel Corp Magnetically operated lifting device - has permanent magnets whose field is modified by movable pole piece and seal extending across gap between fixed pole pieces
FR2552259A1 (en) * 1983-09-15 1985-03-22 Vavasseur Michel Magnet-unit with detachment mechanism and its method of manufacture
EP0280435A3 (en) * 1987-02-24 1989-09-13 Richard Edward Thomson Adjustable quick release magnetic holding assembly
EP0280435A2 (en) * 1987-02-24 1988-08-31 Richard Edward Thomson Adjustable quick release magnetic holding assembly
FR2706881A1 (en) * 1993-06-24 1994-12-30 Braillon Magnetique Sa
EP0631971A1 (en) * 1993-06-24 1995-01-04 Braillon Magnetique Magnetic carrier with permanent magnets
WO1999038726A1 (en) * 1998-02-02 1999-08-05 Perry John Underwood A securing device
WO2009050481A2 (en) * 2007-10-17 2009-04-23 Mra Technology Limited Imaging plate support for recording of radiographs
WO2009050481A3 (en) * 2007-10-17 2009-06-25 Mra Technology Ltd Imaging plate support for recording of radiographs
US9202616B2 (en) * 2009-06-02 2015-12-01 Correlated Magnetics Research, Llc Intelligent magnetic system
US20140104022A1 (en) * 2009-06-02 2014-04-17 Correlated Magnetics Research, Llc Intelligent magnetic system
US9067290B2 (en) 2010-05-25 2015-06-30 Ixtur Oy Attaching device, attaching arrangement and method for attaching an object to be worked to a working base
US9202615B2 (en) * 2012-02-28 2015-12-01 Correlated Magnetics Research, Llc System for detaching a magnetic structure from a ferromagnetic material
US20130222091A1 (en) * 2012-02-28 2013-08-29 Correlated Magnetics Research, Llc System for detaching a magnetic structure from a ferromagnetic material
CN108555798A (en) * 2018-05-28 2018-09-21 中国电子科技集团公司第四十三研究所 A kind of bonding fixture and mechanical arm
CN108555798B (en) * 2018-05-28 2023-10-24 中国电子科技集团公司第四十三研究所 Bonding fixture and mechanical arm
US11482359B2 (en) * 2020-02-20 2022-10-25 Magnetic Mechanisms L.L.C. Detachable magnet device
US20220415552A1 (en) * 2020-02-20 2022-12-29 Jeffery M. Eliason Detachable magnet device
US11915862B2 (en) * 2020-02-20 2024-02-27 Magnetic Mechanisms L.L.C Detachable magnet device

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