Agricultural furrow forming apparatus depth control

• US 4,373,456 A
• Filed: 05/20/1981
• Issued: 02/15/1983
• Est. Priority Date: 05/20/1981
• Status: Expired due to Term

• Current Assignee: Case Corporation (CNH Industrial N.V.)
• Original Assignee: International Harvester Co. (CNH Industrial N.V.)
• Inventors: Westerfield, Lawerence D.
• Primary Examiner(s): Feyrer, James R.
• Application Number:
  US06/265,514
• Time in Patent Office: 636 Days
• Field of Search: 111/85, 111/87, 111/88, 116/DIG. 3, 116/323, 116/324, 116/334, 73/1 J, 172/425, 172/427, 172/430, 172/536, 172/605, 172/764, 172/738
• US Class Current: 111/164
• CPC Class Codes: A01C 5/068 Furrow packing devices, e.g. press wheels
• CPC Class Codes: A01C 7/203 comprising depth regulation means

Abstract

An apparatus to be towed that includes frame supported, rotatably mounted 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 with each wheel being located generally adjacent an outer surface of a disk, a gauge wheel adjustment assembly, including an indicator, movably mounted in the frame for contact with the supports to achieve desired furrow depth, furrow depth indicating means having a zero indicating position and spaced indicia located adjacent the indicator and including adjustment structure to locate and fix the zero position opposite the indicator when the wheels and disks contact a level surface for accurate furrow depth control.

Claims

1. A furrow forming apparatus depth control 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 relative 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 including a support pivotally mounted on said frame, a wheel located generally adjacent an outer surface of a disk and rotatably mounted on said support;

(d) gauge wheel adjustment means movably mounted on said frame for contact with said supports to achieve desired furrow depth, said means including an indicator and a slide slideably mounted on said frame forward of said supports and above the pivotal mounting of said supports on said frame, said slide having a threaded portion and including structure positioned adjacent said supports and extending transversely thereto and to the furrow, a threaded rod engageable with said threaded portion and a knob for rotating said rod for moving said supports equally in the same direction;

(e) furrow depth indicating means having a zero indicating position and spaced indicia located adjacent said indicator; and

(f) adjustment means for selectively mounting said indicating means on said frame, said adjustment means including a longitudinally spaced pair of slotted holes elongated in the direction of indicator travel in said indicating means and complementary fasteners to selectively secure said indicating means to said frame, whereby with said disks and wheels in contact with a level surface, and said zero indicating position of said indicating means being located opposite said indicator by said adjustment means and secured to said frame, accurate depth control is achieved.