The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 15, 1980
Filed:
Sep. 25, 1978
Kenneth A Woodruff, Clarion, IA (US);
Hagie Manufacturing Co., Clarion, IA (US);
Abstract
An automatic depth adjusting control system and method for controlling the vertical position of a pair of corn detasseling devices adjustably mounted on a farm implement for removing tassels from two adjacent rows of corn plants. The control system includes a parallel link system for supporting the corn detasseling devices, a hydraulic cylinder connected to the parallel link system for controlling the vertical movement thereof to raise and lower the pair of corn detasseling devices, and a crop sensing unit positioned forwardly of each of the detasseling devices for detecting the height of the corn plants in a corresponding corn row. Each crop sensing unit provides for the transmission of either a raise signal or a lower signal, in response to the height of the corn plants in an associated row, to electrical circuitry and then hydraulic circuitry for actuating the hydraulic cylinder. In response to such signals, the electrical and hydraulic circuitry raises the detasseling devices upon receiving a raise signal from at least one of the sensing units, and lowers the detasseling devices only upon receiving a lower signal simultaneously from both of the sensing units. The method of the present invention includes the sensing of the plant height of corn in two adjacent rows, and raising or lowering the position of the two corn detasseling devices for such rows relative to the height of the corn plants therein.