1. Field of the Invention
This invention relates to the art of manufacturing clarifiers or settling tanks and particularly deals with travelling bridge clarifiers easily and quickly assembled at the use site on a concrete basin from pre-fabricated components and sub-assemblies forming compact bundles fitting on a conventional size truck for over the road shipment to the use site.
2. Prior Art
Travelling bridge clarifiers or settling tanks are generally too large to be shipped in assembled form and have been erected at the use site requiring services of skilled builders for a prolonged time period frequently under unsatisfactory weather conditions all contributing to large expense and delays. Travelling bridge clarifiers of the type disclosed and claimed in our U.S. Pat. No. 4,193,871 issued Mar. 18, 1980 may be 15 to 25 feet in width, 40 to 75 feet in length, and 6 to 10 feet in depth, thus preventing over the road shipment of complete assembled units. Further the metal tank of the clarifier required heavy steel sheets and beams adding to shipment costs and installation problems.
It would, therefore, be an improvement in the art to produce clarifiers with concrete basins which are poured at the use site and pre-fabricated sub-assemblies and interfitting components small enough to be compactly packed and shipped on a conventional size flat bed truck and then easily and quickly assembled on top of the concrete basin.