Show veneer silencer for engine it Is sometimes necessary to take heroic measures to preserve our silence consider the problem of the tucson light and power company which has a diesel engine with an exhaust pipe 32 laches inches in diameter the roar of which could be heard far or 14 miles to overcome the tremendous aud unbearable noise which the engine would develop a maxim silencer has been built which weighs pounds Is seven feet la in diameter and is 20 feet long the first silencer of this type was six inches long and went on the end of a gun barrel |