Title: Subsurface root crop harvesting blade assembly

Abstract: An improved blade assembly for moving beneath the surface of the ground to engage and lift a subsurface root crop upwardly and rearwardly when moved along a forward path by a harvesting implement. The assembly includes an elongated blade that is held transverse to the forward direction of harvester travel. The blade is mounted to a framework for oscillational movement about a first horizontal axis and a second axis perpendicular to the horizontal axis. A power source operates the blade to oscillate about these axes in continuous cycles. Each cycle of blade movement includes a forward and downward stroke and an upward and rearward stroke. This movement occurs rearward of and below the horizontal pivot axis for the blade.

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Inventors: Johnson, Lynn F. (American Falls, ID, US)

Application Number: 580877
Filing Date: 1975-05-27
Publication_date: 1976-11-23
Assignee: Idaho Research Foundation, Inc. (Moscow, ID)
Primary Class(es): 171/17
Other Classes:
US Patent Ref:

533288	Jan, 1895	Goodell	171/76.
602497	Apr, 1898	Buck	171/81.
3625290	Dec, 1971	Johnson	171/17.

Other Refs:
Primary Examiner: Kinsey, Russell R.
Assistant Examiner:
Attorney: Wells, St. John & Roberts