National Research Development Corporation

Derek J Frost

Paul S Berry

Peter F Inskip

Frank R Brown

A metering and dibbing assembly for use in a dibber drill comprises a rotary feed section, inlet means for introducing seed at successive seed-retaining locations in the rotary feed section, a rotary dibber section having a plurality of dibber elements at least in part housed in radially disposed bores in the dibber section, and cam means operative to withdraw successive dibber elements to allow the transfer of seed from the feed section into the associated bores for these elements and thereafter to move the dibber elements in a radially outward movement so as to press the seed into the ground.

Dibber drills

A rotor assembly for use in a poultry harvester, comprising first and second rotors arranged side by side about a center line of the assembly for rotation about vertical or predominantly vertical axes, a third rotor equispaced from the first and second rotors in a direction along the center line of the assembly, and drive means for rotating the third rotor in a clockwise or anticlockwise sense, as desired, during operation of the assembly, the drives for the first and second rotors being derived from the motion of the third rotor and being operative to counter-rotate the first and second rotors in rotational senses which remain unaltered irrespective of the direction of rotation of the third rotor at any given moment, each rotor providing a continuous array of radially-extending guide elements closely adjacent and/or abutting and/or intermeshing with the guide elements of the other rotors.

Growing community of inventors

North Brickhill, United Kingdom

Derek J Frost