Wayne S Tonsfeldt

US Patent:

40277330, Jun 7, 1977

Filed:

Aug 28, 1975

Appl. No.:

5/608681

Inventors:

Fred W. Eisenhardt - Fargo ND
Wayne S. Tonsfeldt - Sabin MN

International Classification:

A01D 2504
A01D 4900

US Classification:

171 58

Abstract:

A machine for pulling weeds from rows having crops, as sugar beets. The machine has a transverse tool bar carrying a hitch. The hitch connects the tool bar to a tractor. A plurality of weed-pulling units are mounted on the tool bar. Each weed pulling unit has a pair of engaging pneumatic tires that are driven in opposite directions with a hydraulic motor. A pair of gauge and guide wheels connected to the tool bar locate the tool bar and weed pulling wheels above the surface of the ground so that the engaging rotating pneumatic tires will pull weeds from the rows of crops.

US Patent:

43016464, Nov 24, 1981

Filed:

Aug 4, 1980

Appl. No.:

6/175301

Inventors:

Donald C. Gates - Fargo ND
Wayne S. Tonsfeldt - Sabin MN

International Classification:

A01D 2302

US Classification:

5612143

Abstract:

An apparatus for removing foliage from row crops including a frame adapted to be connected to a prime mover for movement in a forward direction. A plurality of rotors are rotatably attached to the frame and are disposed transversely to the forward direction of movement thereof. A mechanism is provided for selectively rotating the rotor. A first brush is attached to each rotor at a first place on the rotor, a second brush is attached to each rotor at a second place on the rotor, the second brush being spaced from the first brush. An adjusting structure is provided for selectively adjusting the relative positions of the first and second brushes on each rotor with respect to each other for adjusting for the width of rows of crops.