Title: Arrangement for the stacking in a space-saving manner of tetrahedral packing units in a prismatic collective container

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1. A device for stacking a plurality of tetrahedral packing units in a space saving manner in a prismatic container therefor in which the tetrahedral packing units are arranged in a plurality of superposed layers, in the bottom layer of which a corresponding edge of each package unit extends vertically substantially along the vertical axis of the prismatic container and parallel to each other, the lower end of the corresponding edges resting on the bottom of the prismatic container, the upper layers being arranged in alternate nesting relation with the bottom layer, said device comprising a plurality of retractable support means for insertion into and withdrawal from the prismatic container through openings provided therein for receiving said retractable support means, said support means, when inserted into the prismatic container during stacking of the tetrahedral units therein, supporting each tetrahedral packing unit in the bottom layer on the lower surface of each such unit, and means for inserting and subsequently withdrawing said support means after stacking said plurality of tetrahedral packing units in said prismatic container the upper layers of the tetrahedral packing units preventing displacement of the units in the bottom layer when said support means is withdrawn.

2. A device as claimed in claim 1 wherein each tetrahedral packing unit is supported by one retractable support means.

3. A device as claimed in claim 1 wherein each retractable support means comprising an arm pivoted at one end thereof and a curved support arm extending laterally from the other end thereof whereby when said pivotable arm is turned the curved support arm will enter an opening in the prismatic container to support one of the packing units in the bottom layer.

4. A device as claimed in claim 3 wherein the curved support arm is a circular segment having its center of curvature at the pivot of said pivotable arm.

5. A device as claimed in claim 1 wherein each retractable support means comprises a vertically extending rod, a base plate for carrying said vertical rods and means for providing said base plate with reciprocating movement in a vertical direction to move said rods upwardly through the openings in the prismatic container to support said tetrahedral packing units during stacking and to withdraw said rods from the prismatic container after stacking.

6. A device as claimed in claim 1 wherein the openings in the prismatic container are disposed in the bottom of said container at a distance from the side walls thereof not more than one half the length of one edge of the tetrahedral packing unit.

7. A device as claimed in claim 1 wherein the number of openings in the prismatic container for receiving said support means, is at least equal to the number of said support means.

Other info:

Inventors: Pettersson, Leif B. (Staffanstorp, SW)

Application Number: 523543
Filing Date: 1974-11-13
Publication_date: 1976-06-22
Assignee: AB Ziristor (Lund, SW)
Primary Class(es): 53/142 53/390, 206/436
Other Classes:
US Patent Ref:

3831835

Aug, 1974

Guhl

53/142.

Other Refs:
Primary Examiner: Spar, Robert J.
Assistant Examiner: Abraham, George F.
Attorney: Pierce, Scheffler & Parker