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:
Aug. 30, 1977
Filed:
Apr. 28, 1975
Morton C Swanson, Palouse, WA (US);
Other;
Abstract
A seed drill for a field left in stubble, comprising a plurality of pairs of discs wherein each pair includes a forward coulter disc tangentially engaging a rearward furrow opening disc held by clevis members to a wheel supported framework. Seeds are directed between the disc pairs to fall therebetween to a point of convergence between the two discs. Forward rotation of the discs cause the seeds to be separated and evenly spaced apart as the seed drill is moved along a forward path of travel. A hydraulic system is provided wherein the pairs of discs are forced downwardy by ram cylinders connected between each clevis member and the framework. The ram cylinders are connected in a parallel hudraulic circuit to a pressure supply source so an even amount of downward pressure is applied to each of the disc pairs.