Excavating – Peat excavators
Patent
1975-02-10
1976-05-11
Eickholt, E. H.
Excavating
Peat excavators
37DIG8, 37 71, 198109, 198116, 299 9, E02F 314
Patent
active
039552942
ABSTRACT:
An elevator apparatus for emptying a towed deep-sea particle harvesting sled is disclosed. The sled is towed over the bottom surface of a deep-sea ocean bed by a strip. The strip is connected at its lower end to the sled, at its upper end to the vessel, and is under tension between the sled and the vessel as the sled is towed over the ocean floor. The strip includes a first railway for passing downwardly sequentially conveyed buckets on an endless belt from the surface vessel to the sled, and a second railway for passing upwardly sequentially conveyed buckets from the sled to the vessel. At the sled, the buckets are reversed on a wheel. The buckets pass through an area wherein collected particles are accumulated with the result that the buckets capture the particles and elevate them along the strip to the surface. At the surface on the vessel a similar wheel reverses the path of the conveyed buckets, as well as emptying the buckets into a surface collection area which is preferably on the vessel. The strip includes spaced apart cable members which are clamped between discrete sections of neutrally buoyant track. These sections of neutrally buoyant track provide an enclosed path for a cable drawing the buckets. This enclosed path is penetrated by a grip fastening the buckets to the moving endless belt. Thus, the cable not only moves the individual buckets, but additionally assures that the buckets are held to their railways on the towing strip.
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Eickholt E. H.
Hawaii Marine Research, Inc.
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