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Semiautomatic stacker for stackable articles

  • US 5,697,753 A
  • Filed: 09/19/1995
  • Issued: 12/16/1997
  • Est. Priority Date: 09/19/1995
  • Status: Expired due to Term
First Claim
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1. A stacker uniquely able to semiautomatically load, in place, inside a variety of trailer types, columns of stackable articles, said stacker including:

  • a base structure having a front portion and a rear portion;

    a conveyor support structure pivotally mounted on said base for horizontal arcuate movement and having a front portion and a rear portion;

    an incline conveyor for moving said articles, said incline conveyor being both pivotally and slidably attached to the conveyor support structure for both elongated horizontal movement and vertical movement with respect to the base structure, said incline conveyor having an inner end for receiving articles and an outer end for depositing articles in a stack;

    controlled motors for automatically moving said incline conveyor inwardly, upwardly, and outwardly with respect to said conveyor support structure while stacking articles such that the outer end of said incline conveyor is selectively movable vertically in a substantially straight line from a lowest position to a highest position;

    first detector means on the outer end of said incline conveyor for detecting each of said deposited articles and providing a signal to said controlled motors to stop upward movement of the incline conveyor at the proper location to deposit the next article; and

    second detector means mounted on the conveyor support structure for detecting when said incline conveyor is at its maximum height and stopping movement of said incline conveyor.

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