Abstract: A push-on type lumber stacker utilizes a pivotal conveyor for receiving boards from a bulk supply and discharging complete courses of boards onto a lumber stack. The discharge end of the conveyor pivots upwardly in correspondence with the increasing height of the stack. The pivotal conveyor incorporates a plurality of automatically actuated stick holders which hold the stacking sticks as runners during formation of each course and then release the sticks to serve as course spacers in the stack. A plurality of chain-mounted discs on the conveyor assist in pushing the boards onto the stacking sticks and, in conjunction with other auxiliary apparatus, enable one course of boards to be built up on the conveyor while another course is held ready for discharge.

Abstract: A push-on type lumber stacker utilizes a pivoted conveyor for discharging the boards onto the stack and which starting from the outfeed conveyor level pivots upwardly in correspondence with the increasing height of the stack. The pivoted conveyor at its discharge end incorporates a plurality of remotely operable stick holders which hold the sticks as runners during formation of each layer and then release the sticks to serve as layer spacers. A plurality of rotary driven cams are also mounted on the discharge end of the conveyor to assist in pushing the boards onto the sticks.

Abstract: A push-on type lumber stacker is operated such that each layer of boards is formed directly upon the package of stacked lumber. A plurality of rotary driven cam discs aligned transverse to the longitudinal axes of the boards push individual boards onto the package. The cams are shaped so as to push forward and downward on the trailing edge of the boards. The stacking sticks used to separate the boards are inserted at spaced intervals into stick holders so that the lumber may slide over the stick holders and then onto the sticks as the layers are made.