Patent ID: 7013938

Claim:
A drive shiftable rolling feed device for a wood planing machine which includes a mounting frame having right and left frame sides spaced apart from each other in a longitudinal direction, a support carriage mounted on the right and left frame sides and movable in an upright direction, a motor with an output shaft that is disposed on the support carriage, and a cutter shaft rotatably mounted on the support carriage, extending in the longitudinal direction, and driven by the output shaft of the motor so as to deliver a primary drive, said device comprising: front and rear feed rollers adapted to be mounted on the support carriage at two opposite sides of the cutter shaft in a transverse direction relative to both the longitudinal direction and the upright direction, each of said front and rear feed rollers being rotatable about a roller axis in the longitudinal direction; first and second driven gears which are adapted to be mounted on and which are rotatable relative to the support carriage about a driving axis parallel to the roller axis, and which are spaced apart from each other along the driving axis; a reduction gear train adapted to convert the primary drive into first and second reduction drives, said reduction gear train being coupled to said first and second driven gears to deliver the first and second reduction drives to said first and second driven gears, respectively; a clutch actuating shaft which is adapted to be mounted rotatably on the support carriage, which extends along the driving axis, and which is surrounded by said first and second driven gears, said clutch actuating shaft including a coupling segment which is movable along the driving axis relative to the support carriage, and an actuated end opposite to said coupling segment along the driving axis and actuated to move said coupling segment along the driving axis between first and second positions; a clutch member disposed to couple said coupling segment to said first driven gear when said coupling segment is in the first position so as to transmit the first reduction drive to drive said clutch actuating shaft to rotate with a first rotational drive, and to couple said coupling segment to said second driven gear when said coupling segment is in the second position so as to transmit the second reduction drive to drive said clutch actuating shaft to rotate with a second rotational drive; a drive transmitting member disposed to transmit the first or second rotational drive of said clutch actuating shaft to said front and rear feed rollers; and a shifting member coupled to said actuated end to shift said coupling segment between the first and second positions.