Improvements in portable screening machines-loaders for aggregates, sandboxes, gravel pits and the like, characterized by the fact that a machine consisting of a trailer made of U-shaped and angular profiles has been planned, constituting a chassis or frame to which four are coupled wheels of which the two front ones are directives, being joined to a species of lance or draft for tow; consisting of the machine in synthesis, of three elements that are: trailer, vibrating classifier and conveyor belt. (Machine-translation by Google Translate, not legally binding)
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