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A stair-like log feeder having a movable drive module and a movable driven unit cooperating with one another for unscrambling logs from a pile of logs and for moving the singularized logs upwardly along an inclined plane in a successive series of displacements. The log feeder comprises a support fra

A stair-like log feeder having a movable drive module and a movable driven unit cooperating with one another for unscrambling logs from a pile of logs and for moving the singularized logs upwardly along an inclined plane in a successive series of displacements. The log feeder comprises a support frame having support rollers for slidably supporting the drive module and the drive unit. A cyclic actuator is connected to the drive module by a link arm, for moving the drive module in an alternating up and down movement along the inclined plane. A first pair of rack gears is affixed to the drive module, and a second pair of rack gears is affixed to the driven unit. A pair of gears is mounted on a transverse shaft which is pivotally affixed to the support frame. The pair of gears is engaged with the first and second rack gears for supporting both the drive module and the driven unit in a pendulum mode about the transverse shaft, and for converting a movement of the drive module into an equal, opposite and concurrent displacement of the driven unit. Each step of the drive module has a riser portion forming an angle of between about 3°and about 6°with the inclined plane. Similarly each notch of the driven unit has a longitudinal edge forming an angle of between about 5°and about 8°with the inclined plane.

대표청구항 ▼

A reciprocal reactive drive mechanism for actuating a first and a second stair-like portion of a log feeder into opposite displacement to one-another; said log feeder comprising an inclined support frame having slide means mounted thereon, and a cyclic actuator attached thereto; said first and secon

A reciprocal reactive drive mechanism for actuating a first and a second stair-like portion of a log feeder into opposite displacement to one-another; said log feeder comprising an inclined support frame having slide means mounted thereon, and a cyclic actuator attached thereto; said first and second stair-like portions having guide means on a lower side thereof cooperating with said slide means for being slidably supported and guided along said inclined support frame; said cyclic actuator being connected to said first stair-like portion by a link means, for moving said first stair-like portion in an alternating up and down movement along said inclined support frame; said reciprocal reactive drive mechanism comprising: a first power transmission element affixed to said first stair-like portion, a second power transmission element affixed to said second stair-like portion and a third power transmission element pivotally affixed to said inclined support frame, said third power transmission element having a first segment connected to said first power transmission element, and a second segment, opposite said first segment relative to an axis of rotation of the third power transmission element, connected to said second power transmission element, whereby a movement of said first stair-like portion along said inclined support frame is converted into an equal, opposite and concurrent displacement of said second stair-like portion.