A feed roller assembly of a harvester head of a forestry machine includes a pivoted arm operated by a hydraulic cylinder and a feed roller and one operating device attached to the pivoted arm having an attachment hub driving the feed roller, the feed roller includes at least one attachment flange, at least two toothed discs, spacer pieces between at least the attachment flange and the toothed discs, attachment bolts connecting the attachment flange, the toothed discs, and the spacer pieces to form the feed roller as a bolted construction, and a cleaning comb attached to the arm for cleaning gaps formed between each pair of components when the feed roller is rotating.

A safety feeder includes a transmission system including a drive shaft having a rotating axis on a phantom axis, and a coupling system connecting to the drive shaft and configured to rotate with the drive shaft simultaneously. The coupling system includes a drive line and a tube covering the drive line. The drive line includes an end thereof connecting to the drive axle.

A safety feeder includes a transmission system including a drive shaft having a rotating axis on a phantom axis, and a coupling system connecting to the drive shaft and configured to rotate with the drive shaft simultaneously. The coupling system includes a drive line and a tube covering the drive line. The drive line includes an end thereof connecting to the drive axle.

A feeding device includes a plurality of driving modules, a plurality of feeding modules and a plurality of couplers. Each driving module has a driving shaft pivotally mounted on a housing and driven by a power module to be rotated about an axis. Each feeding module includes a pivoting shaft substantially coaxial with the driving shaft, a suspending unit journalled on the pivoting shaft to be pivotable and having a bearing portion which is disposed to be biased downwardly by a spring member, a driven shaft mounted rotatably on the bearing portion, and a feeding roller driven by the driven shaft. Each coupler includes a transmitting shaft having two ends connected to the driving shaft and driven shaft by universal joints, respectively.

A feeding device includes a plurality of driving modules, a plurality of feeding modules and a plurality of couplers. Each driving module has a driving shaft pivotally mounted on a housing and driven by a power module to be rotated about an axis. Each feeding module includes a pivoting shaft substantially coaxial with the driving shaft, a suspending unit journalled on the pivoting shaft to be pivotable and having a bearing portion which is disposed to be biased downwardly by a spring member, a driven shaft mounted rotatably on the bearing portion, and a feeding roller driven by the driven shaft. Each coupler includes a transmitting shaft having two ends connected to the driving shaft and driven shaft by universal joints, respectively.

A feeding machine includes: a machine shell having a supporting end and a driving end that is opposite to the supporting end; a feeding unit connected to the machine shell and including a plurality of feeding wheels spaced apart from one another; and a driving unit including a motor that extends into the machine shell and that has an output shaft, and a speed reducing member that is disposed between the motor and the feeding unit and that has a worm and a worm wheel orthogonal to the worm. The worm is disposed in the machine shell and on the output shaft of the motor. The worm wheel is disposed under the worm.

A feeding machine includes: a machine shell having a supporting end and a driving end that is opposite to the supporting end; a feeding unit connected to the machine shell and including a plurality of feeding wheels spaced apart from one another; and a driving unit including a motor that extends into the machine shell and that has an output shaft, and a speed reducing member that is disposed between the motor and the feeding unit and that has a worm and a worm wheel orthogonal to the worm. The worm is disposed in the machine shell and on the output shaft of the motor. The worm wheel is disposed under the worm.