AGRICULTURAL IMPLEMENT FOR CLOD BREAKING

• US 3,705,630 A
• Filed: 02/02/1970
• Issued: 12/12/1972
• Est. Priority Date: 02/03/1969
• Status: Expired due to Term

• Current Assignee: Herbert Vissers
• Original Assignee: Herbert Vissers
• Inventors: Vissers, Herbert
• Primary Examiner(s): Pulfrey, Robert E.
• Assistant Examiner(s): Pellegrino, Stephen C.
• Application Number:
  US05/008,045
• Time in Patent Office: 1,044 Days
• Field of Search: 172/763,713,635 306/1.5 287/56 182/222 85/32
• US Class Current: 172/713
• CPC Class Codes: A01B 23/02 Teeth; Fixing the teeth
• CPC Class Codes: A01B 23/043 specially adapted for harrows with non-rotating tools
• CPC Class Codes: F16B 2200/403 Threaded clamping parts

Abstract

An agricultural implement for clod breaking, comprising a hollow support, for instance of tubular or U-section, and a plurality of clod breaking members extending through recesses in the top and bottom walls of said support and attached thereto by screwed connections. For providing a rigid support having thin walls and a rigid attachment of the clod breaking members these clod breaking members are inserted through bushes which support the top and bottom walls of said support against being displaced inwardly.

Claims

1. An agricultural implement for clod breaking comprising, in combination:

support means including an elongate support member having spaced, and relatively thin integral upper and lower walls provided with longitudinally spaced aligned pairs of openings;

a plurality of elongate clod breaking members, each having a shank portion provided at one end thereof with an enlarged collar and having a screw thread portion at the opposite end of the shank portion, each member having its shank portion projected through an associated pair of said aligned openings, and an enlarged nut member engaged on each screw thread portion and cooperating with a respective collar to clamp tightly upon the support means with force sufficient to crush said upper and lower walls together; and

said support means also including tubular bushing means surrounding each shank portion between said upper and lower walls for taking the clamping action of each member and preserving the integrity of spacing between said upper and lower walls;

said support member being in the form of an initially circular tube having its upper and lower walls flattened to engage the opposite ends of said bushings.

2. An agricultural implement as defined in claim 1 wherein the openings of each pair are of diameters smaller than said bushings, said upper and lower walls being flattened to abut the opposite ends of said bushings.

3. An agricultural implement as defined in claim 2 wherein each bushing presents a bore of predetermined diameter and said openings in said upper and lower walls are of smaller size than said predetermined diameter, the marginal areas of said walls surrounding said openings being directed inwardly within the confines of said bushings.

4. An agricultural implement as defined in claim 1 wherein the marginal edges of said areas are conically deformed into the confines of said bushings, each collar and nut having a conical surface seating on such conical areas.

5. An agricultural implement for clod breaking comprising, in combination:

support means including an elongate support member having spaced, and relatively thin integral upper and lower walls provided with Longitudinally spaced aligned pairs of openings;

a plurality of elongate clod breaking members, each having a shank portion provided at one end thereof with an enlarged collar and having a screw thread portion at the opposite end of the shank portion, each member having its shank portion projected through an associated pair of said aligned openings, and an enlarged nut member engaged on each screw thread portion and cooperating with a respective collar to clamp tightly upon the support means with force sufficient to crush said upper and lower walls together; and

said support means also including tubular bushing means surrounding each shank portion between said upper and lower walls for taking the clamping action of each member and preserving the integrity of spacing between said upper and lower walls;

said support means including conical support surfaces for each collar and nut and wherein each collar and nut present conical seating surfaces engaged with respective support surfaces.