Equalized furrow forming apparatus for a seed planter

• US 4,356,780 A
• Filed: 05/28/1980
• Issued: 11/02/1982
• Est. Priority Date: 05/28/1980
• Status: Expired due to Term

• Current Assignee: Case Corporation (CNH Industrial N.V.)
• Original Assignee: International Harvester Co. (CNH Industrial N.V.)
• Inventors: Bauman, Jack L.
• Primary Examiner(s): Bratlie, Steven A.
• Application Number:
  US06/153,975
• Time in Patent Office: 888 Days
• Field of Search: 111/87, 111/88, 111/85, 111/86, 172/395, 172/239, 172/421
• US Class Current: 111/164
• CPC Class Codes: A01C 5/064 with rotating tools
• CPC Class Codes: A01C 7/203 comprising depth regulation means
• CPC Class Codes: Y10S 111/927 Parallelogram mounting

Abstract

An apparatus to be towed that includes a frame supported, rotatably mounted, pair of furrow forming disks that are arranged to substantially contact each other at the approximate point of entry into the soil and diverge apart rearwardly and upwardly, a pair of rotatable gauge wheels having supports that individually and pivotally connect the wheels to the frame to regulate furrow depth, with each wheel being located generally adjacent an outer surface of a disk, and an equalizer assembly connecting the supports so that movement of a gauge wheel by an obstacle upward produces an equal movement of the other gauge wheel downward to produce a frame height and hence related furrow depth that is the average between the gauge wheel elevations.

Claims

1. A furrow forming apparatus for a seed planter comprising:

(a) a frame, said frame being adapted to be attached for towing to a mobile power source;

(b) a pair of opposed, furrow forming disks rotatably mounted on said frame with the disks substantially contacting each other at the approximate point of entry into the soil and diverging apart rearwardly and upwardly to the direction of travel;

(c) a pair of gauge wheel means individually mounted on said frame forward of said disks for regulating furrow depth, each means comprising;

a support pivotally mounted on said frame, a wheel located generally adjacent an outer surface of a disk and rotatably mounted on said support on an axis rearward of the disk axis of rotation; and

(d) equalizing means, pivotally mounted on said frame and extending between and positioned forward and adjacent said supports, whereby movement of a support and thus wheel in one direction produces the same movement of the other support and wheel in a contrary direction and where the lower wheel will fall to the soil and the movement of its support will be away from the equalizing means when out of the equalizing range.

2. The apparatus of claim 1 in which each support has a portion extending above the pivotal mounting of said support on the frame for contact with said equalizing means and said portion is shorter than the distance between the pivotal mounting and said wheel axis.