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EARTH WORKING MACHINE INCLUDING SCRAPER BLADE MEANS

  • US 3,776,318 A
  • Filed: 03/22/1972
  • Issued: 12/04/1973
  • Est. Priority Date: 03/22/1972
  • Status: Expired due to Term
First Claim
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1. An earth working machine adapted to be connected to a tractor to be towed by the tractor comprising elongated scraper blade means extending across the machine between the sides of the machine, said scraper blade means including a pair of blade sections disposed end to end and pivot means pivotally interconnecting adjacent ends of the blade sections to enable relative pivotal movement about a substantially horizontal axis extending transversely of the blade means, at least a pair of ground-traveling supporting devices positioned to the rear of said scraper blade means, with one disposed adjacent one side and the other adjacent the other side of said machine, power-operated means for each supporting device mounting the device on said blade means and on being actuated operable to change the relative elevation of the supporting device with respect to said blade means, the power-operated means for each supporting device being actuatable independently of the other, draft means extending forwardly of the blade means for connecting the machine to the tractor, and a remote control for said power-operated means flexibly connected thereto, adapted to be positioned adjacent the operator of the tractor whereby the same may be manipulated by such operator during towing of the machine.

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