公开(公告)号：US4111027A

公开(公告)日：1978-09-05

申请号：US657243

申请日：1976-02-11

Applicant: Alan Stuart Bottomley

Inventor： Alan Stuart Bottomley

IPC: B21D26/14 ,  B21D5/04 ,  H01F7/06 ,  B21D11/04

CPC classification number: H01F7/064 ,  B21D5/042

Abstract: The invention provides a tool particularly adapted for working metal. The tool comprises an electromagnetic coil, a pole adapted to be magnetized by the coil, and a work surface pivotable with respect to the pole and operative in use to apply bending force to a work piece held to the pole by magnetic force.Keepers may be provided to be attracted to the pole to hold the work piece. A keeper may be fitted with a cutting blade or punch.The work surface may be part of a body which, when moved from a rest position, causes the coil to be energized and which is urged by magnetic force back to that rest position to de-energize the coil.The body is preferably connected to the pole by a hinge which does not project above a plane so as in no way to hinder metal bending.A tool may magnetically clamp itself to a bench.The tool may have an electrical circuit capable of producing DC for magnetic holding or AC so that the tool may be used as a demagnetizer.