Eye Magnet / Mailbox / Water Walking (Nov, 1928)
How is that mailbox an improvement?
REMOVES METAL PARTICLES FROM EYES WITH RING MAGNET DESIGNED IN ENGLAND
ONE of the latest developments in the field of medical science is the ring magnet. It is proving of great value in removing pieces of metal from the eye after an accident. Workers in various industries often suffer from flying pieces of metal striking the eye. To remove such small particles is often a delicate operation whose pain is greatly lessened through the use of this ingenious device.
Electro Magnets Clear Tacks Off Universal City Streets (Mar, 1930)
Or you could just sweep the streets…
Electro Magnets Clear Tacks Off Universal City Streets
ELECTRO magnets on a bar mounted on wheels and trailed after a car make the streets of Universal City, California, safe for motorists. The magnets pick up nails, tacks, pieces of wire, lost bolts and nuts and a wide variety of other metal objects which if left in the streets would cause punctures and other tire trouble. Frank Graves, electrical chief of the city, invented the puncture fighter.
Metal Bar Floated in Air by Magnetic Repulsion (May, 1929)
Obviously this is a silly trick, but I posted the piece mainly so I’d have an excuse to link to this insane video of “quantum” levitating superconductors locked in a magnetic field. You need to see this, they can actually levitate upside down.
Metal Bar Floated in Air by Magnetic Repulsion
AN IRON bar which floats in the air in apparent defiance of the law of gravity was recently exhibited by the physics department of the University of California, but the professors made no claim to supernatural ability. The metal “wobbly bar” floated between two guide posts on either end of a wooden base in which they were mounted.