US 12,464,984 B2
Pruning machine
Fred Spagnolo, Mildura (AU)
Assigned to F & T Spagnolo Pty Ltd., Mildura (AU)
Appl. No. 17/753,441
Filed by F & T Spagnolo Pty Ltd., Mildura (AU)
PCT Filed Sep. 4, 2020, PCT No. PCT/AU2020/050928
§ 371(c)(1), (2) Date Mar. 3, 2022,
PCT Pub. No. WO2021/042168, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 2019903294 (AU), filed on Sep. 6, 2019.
Prior Publication US 2022/0312683 A1, Oct. 6, 2022
Int. Cl. A01G 3/08 (2006.01); B27B 5/10 (2006.01)
CPC A01G 3/088 (2013.01) [B27B 5/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pruning machine for pruning vegetation growing on generally horizontal support wires, the machine including a vertical shaft mounted for rotation and at least one blade assembly mounted on the shaft, the blade assembly including a plurality of blades mounted to rotate with the shaft, the vertical shaft being threaded at least in the region where the blade assembly is mounted, the vertical position of the blade assembly on the shaft being adjusted between two pruning positions by a respective one of one or more adjustment nuts which threadably engages the threaded shaft below the blade assembly and which during adjustment, bears against the underneath of the blade assembly so that rotation of the nut upwardly of the shaft raises the blade assembly and rotation of the nut downwardly allows the blade assembly to lower.