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GEu Campus N ews CENTLESS CIRCUITS Conspicuous in nightmares of power company officials are ingenious, economical human beings who tinker witlh electric circuits, who rig up outlandish but con- venierit wiriili. As a crowning touch to their tlalldiwork, when fuses blow they use a penny. Lights go on. Protection goes out the cellar window. To foil these lhanidy-miien-about-tlie-lhouse, and to end blown-fuse troubles forever, G.E. has developed an oince of protection-a little circuit breaker to replace the old-fashiioned fuse box. It looks very much like anl ordinary lightinig wall-switch. When a "short" occurs, the arc is interrupted inside a small, closed, metal chalnlber in 0.008 of a second. A mere flip of the handleI restores service. Proteetioii? Tile performance is so mild you can hear nothing and see nothing, even when 5000 amperes are being interrupted. And the breaker is safe and foolproof, too. 1'he complete line will include ratings fromn t5 to 600 amperes. Let no more bridged-fuse bogeys disturb anyone's slumbers. J. W. Seanian, Antioch College, '29, was very active in this developmuent. 1 W. . -t I - H ATS OFF TO THIS ONE The Sutorbilt Corporation of Los Angeles had a )ro)belll -- to rein(ove (fried (cocoanut Ilmeat (it's copra in the tropics) front a ship's hold to railroad cars at the rate of one ton every 60 seconds. That sounds like a lot of (l.c.lll. to most people - but it had to be done. They built a machine with an 8-inch flexible metal throat and an amazing appetite. Not content with devouring copra, this machine gobbles up shiploads of potash, soda ash, borax, shale, grain, nuts - and even nibbles at the shirts, trousers, and hats of bystanders. How? A G-E compensator starts a 150-hp. motor. An air compressor comes up to speed. Nature begins to "abhor a vacuum," and up comes everything but the bottom of the ship. If you have a cellar full of copra to be moved - or any similar problem - let us know. STITCHING STEEL Why not use vacuum tubes for speeding-up welders? So thought our engineers as they were working on the problem of stitching steel plates together with the rapidity of a sewing machine. Thyratron-tube control for resistance seam welders resulted. If. W. Lord, '26 graduate of the California Institute of Technology, received a Charles A. Coffin Foundation Award* for developing an accurate timing circuit using Thyratron tubes-an impor- tant part of the control. Industry obtained a new high-speed production tool. This control, when applied to line- or spot-welding machines, permits 1200 current interruptions per minute. Thus, it makes possible the stitching together of thin metal sheets to form gas-tight and water- tight seams. Thyratron-controlled machines will weld stainless steel, mild steel, chromium- and cadmium- plated steel, aluminum alloys, and many other materials. Steel barrels, pails, milk cans, and gasoline tanks are just a few of the many products now produced faster as a result of Thyratron welding control. *A highly-prized company award, name.l after one of the fond"ers of R General El ctric, that is awarded annually to selected employees for meritorious service. 96-5DH GENERAL * ELECTRIC The Wisconsin Engineer 1\'