Why Oil Engines Reverse

By John Savage, A.I.R.T.E. U NLESS suitable precautions are taken, there is nothing to stop a compression-ignition engine . from starting backwards and continue so to run. In......

Automatic Argonarc Welder Produced

A N automatic Argonarc welder has been produced by British Oxygen Gases, Ltd., North Circular Road, London, N.W.2. Electronic control may be used in conjunction with the......