Electromagnetic apparatus
First Claim
1. A tool for bending workpieces comprising in combination:
- an electromagnetic coil;
a pole adapted to be magnetized by the coil and functional in part as a supporting surface for the workpiece;
a ferromagnetic keeper having an edge or surface against which a workpiece may be formed, and adapted to be maintained in a working position, in direct opposition to bending or forming forces, entirely by magnetic force arising from a magnetic flux produced on energization of said coil,and a work surface means pivotable with respect to the pole to place the plane of said work surface means at least substantially in the same plane as the supporting surface of the pole with substantially no part of said pole or said work surface means projecting on one side of said same plane, and operative in use to apply bending force to the workpiece.
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Accused Products
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.
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Citations
18 Claims
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1. A tool for bending workpieces comprising in combination:
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an electromagnetic coil; a pole adapted to be magnetized by the coil and functional in part as a supporting surface for the workpiece; a ferromagnetic keeper having an edge or surface against which a workpiece may be formed, and adapted to be maintained in a working position, in direct opposition to bending or forming forces, entirely by magnetic force arising from a magnetic flux produced on energization of said coil, and a work surface means pivotable with respect to the pole to place the plane of said work surface means at least substantially in the same plane as the supporting surface of the pole with substantially no part of said pole or said work surface means projecting on one side of said same plane, and operative in use to apply bending force to the workpiece. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A tool for bending workpieces comprising
magnetizable pole means for supporting at least part of said workpiece; -
electromagnetic coil means for magnetizing said pole means; work surface means, pivotable with respect to said pole means, for applying bending force to a workpiece held on said pole means entirely by magnetic force; and ferromagnetic keeper means, having an area against which a workpiece may be formed, for magnetically retaining said workpiece on said pole means in direct opposition to bending forces applied to said workpiece by said work surface means. - View Dependent Claims (15)
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16. A tool for bending workpieces comprising
a pole means including a first planar surface defined in part by an edges; -
work surface means having a second planar surface and pivotable from a first position to a second position about an axis at least substantially coincident with said edge, said second planar surface lying at least substantially in the same plane as said first planar surface when said work surface means is in said first position, with substantially no part of said pole means or said work surface means projecting on one side of said plane, and work surface means applying bending force to a workpiece on said pole means and said work surface means when said work surface means is moved from said first position to said second position; ferromagnetic keeper means, having an edge or surface against which a workpiece may be formed; and magnetizing means for magnetizing said pole means to magnetically hold said workpiece and said keeper means to said pole means entirely by magnetic force in direct opposition to bending forces applied to said workpiece by said work surface means. - View Dependent Claims (17, 18)
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Specification