GB842495A - Improvements in or relating to magnetic blocks and workholders - Google Patents

Improvements in or relating to magnetic blocks and workholders

Info

Publication number
GB842495A
GB842495A GB178558A GB178558A GB842495A GB 842495 A GB842495 A GB 842495A GB 178558 A GB178558 A GB 178558A GB 178558 A GB178558 A GB 178558A GB 842495 A GB842495 A GB 842495A
Authority
GB
United Kingdom
Prior art keywords
block
polepieces
magnet
strip
brass
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
GB178558A
Inventor
Eric Senior
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.)
DARWINS Ltd
Original Assignee
DARWINS 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 DARWINS Ltd filed Critical DARWINS Ltd
Priority to GB178558A priority Critical patent/GB842495A/en
Publication of GB842495A publication Critical patent/GB842495A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
    • B23Q3/154—Stationary devices
    • B23Q3/1546—Stationary devices using permanent magnets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Adornments (AREA)

Abstract

842,495. Magnets. DARWINS Ltd. Nov. 18, 1958 [Jan. 18, 1958], No. 1785/58. Class 35. [Also in Group XXIII] A magnetic workholder, scriber block or the like comprises a block composed of two mild steel parts 7 and 8 separated by an inclined brass strip 9 secured by brazing and brass rivets. The block has a blind cylindrical bore in which a magnet 1, with cupshaped mild steel polepieces 5 and 6 cemented to it, may be rotated by a handle 13. The polepieces, which are internally tapered as shown, are separated by a gap 4 inclined at the same angle as the brass strip 9. In the " on " position the gap and the strip are in register and the flux path between the polepieces is completed by an external workpiece or the like while rotation of the magnet through 180 degrees causes the flux to be short-circuited through the block. Stops 14 (Fig. 4, not shown) on one polepiece co-operate with a screw at the blind end of the bore to locate the " on " and " off " positions, which may be indicated on a legend plate adjacent the handle. The magnet assembly is retained by a screwed plug 11, and the block is relieved on three sides to leave proud ends 19 serving as poles while the fourth side is shaped as shown to hold cylindrical workpieces indicated at 27 and 28. Any side may have a tapped hole 24 for a screwed post, blanked by a screw 25 if not required.
GB178558A 1958-01-18 1958-01-18 Improvements in or relating to magnetic blocks and workholders Expired GB842495A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB178558A GB842495A (en) 1958-01-18 1958-01-18 Improvements in or relating to magnetic blocks and workholders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB178558A GB842495A (en) 1958-01-18 1958-01-18 Improvements in or relating to magnetic blocks and workholders

Publications (1)

Publication Number Publication Date
GB842495A true GB842495A (en) 1960-07-27

Family

ID=9727935

Family Applications (1)

Application Number Title Priority Date Filing Date
GB178558A Expired GB842495A (en) 1958-01-18 1958-01-18 Improvements in or relating to magnetic blocks and workholders

Country Status (1)

Country Link
GB (1) GB842495A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654451A1 (en) * 1989-11-14 1991-05-17 Barth Christian Device for picking up the driving of piles using a computer
EP0597622A1 (en) * 1992-11-09 1994-05-18 International Business Machines Corporation Sample carriage for scanning probe microscope
CN103639731A (en) * 2013-11-28 2014-03-19 无锡市航鹄科技有限公司 Porous positioning tool for cylinder car
CN108278960A (en) * 2018-03-23 2018-07-13 中国石油天然气集团公司管材研究所 A kind of measurement method of steel tube end part straightness measuring instrument and the measuring instrument

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654451A1 (en) * 1989-11-14 1991-05-17 Barth Christian Device for picking up the driving of piles using a computer
EP0597622A1 (en) * 1992-11-09 1994-05-18 International Business Machines Corporation Sample carriage for scanning probe microscope
CN103639731A (en) * 2013-11-28 2014-03-19 无锡市航鹄科技有限公司 Porous positioning tool for cylinder car
CN108278960A (en) * 2018-03-23 2018-07-13 中国石油天然气集团公司管材研究所 A kind of measurement method of steel tube end part straightness measuring instrument and the measuring instrument

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