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Click ony photo for a larger imageRevised data sheet Aug 2010UTILITY YARD CRANE |
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2 ton lifting capacity - design proposal 1971 Finished model built 1:12 scale
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| It had an open cab just to
the left of a small hydraulic arms. The arm could tip as well as elevate so it could use a direct coupled hook on the end of its telescopic boom to hook directly onto the object to be lifted. This did away with the need to provide winding gear. For fine positioning the arm has a limited slew, too far and it would have knocked the drivers head off. |
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This idea seems to hark back to the origonal (first) hydraulic crane built by Taylor and Sons back in 1945. (see link) It is a unit designed as a simple goods handeling unit, pick up move about put down. Somthing that has no complex control systems. The picture left is of that origonal unit. It was the first (according to Coles)to use hydraulics to lift the load. |
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Here is the finished prototype unit photographed in the Sunderland test yard showing how it operated. This was to be produced in the German factory even during the change over period to Grove, so were still being badged as Coles. The concept of a simple puck and lift unit are common place now in the lifting arms fitted to some flatbed lorries to handle unloading heavy goods. ( A concept incidentally patented by Neals Cranes but rejected by Coles as not being a viable product, how wrong can you be... ) |
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