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Apparatus for molding septic tanks

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1. APPARATUS FOR MOLDING A GENERALLY RECTANGULAR SHAPED COMPARTMENTED SEPTIC TANK FROM CEMENTITIOUS MATERIAL AND WHEREIN THE SEPTIC TANK INCLUDES A PAIR OF SUBSTANTIALLY IDENTICAL SIDE-BY-SIDE COMPARTMENTS AND IN WHICH THE SEPTIC TANK IS COMPRISED OF AN IMPERFORATE BOTTOM WALL HAVING UPSTANDING SIDE AND END WALLS INTEGRALLY FORMED THEREWITH AND HAVING AN UPSTANDING INTERMEDIATE WALL INTEGRALLY FORMED WITH THE BOTTOM WALL AND EXTENDING BETWEEN THE SIDE WALLS, SAID APPARATUS COMPRISING A SUBSTANTIALLY FLAT HORIZONTAL IMPERFORATE BASE, A SUBSTANTIALLY RECTANGULAR HOLLOW FEMALE MOLD STRUCTURE POSITIONED ON SAID BASE AND INCLUDING A PAIR OF SUBSTANTIALLY FLAT, UPSTANDING, SPACED-APART SIDE PLATES AND A PAIR OF SUBSTANTIALLY FLAT, UPSTANDING, SPACEDAPAR AND PLATES, SAID PLATES BEING SIMULTANEUOUSLY SHIFTABLE BETWEEN AN OPERATIVE CLOSED POSITION AND AN INOPERATIVE OPEN POSITION, EACH OF SAID PLATES HAVING OPPOSITE UPSTANDING EDGE PORTIONS DISPOSED IN ENGAGEMENT WITH ADJACENT EDGE PORTIONS OF ADJACENT PLATES WHEN SAID PLATES ARE IN THE OPERATIVE CLOSED POSITION, AND SAID PLATES BEING SHIFTABLE OUTWARDLY AND OUT OF ENGAGEMENT WITH EACH OTHER WHEN IN THE INOPERATIVE OPEN POSITION, A RIGID SUBSTANTIALLY RECTANGULAR FRAME STRUCTURE SPACED OUTWARDLY OF AND EXTENDING AROUND SAID FEMALE MOLD STRUCTUR, A PLURALITY OF LINKS PIVOTALLY CONNECTING SAID PLATES WITH SAID RIGID FRAME AND COOPERATING WITH SAID FRAME DURING VERTICAL MOVEMENT THEREOF TO CAUSE SIMULTANEOUS SHIFTING OF SAID PLATES BETWEEN SAID OPERATIVE AND INOPERATIVE POSITIONS, A PAIR OF SUBSTANTIALLY IDENTICAL OPEN TOPPED, GENERALLY RECTANGULAR SHAPED HOLLOW MALE MOLD STRUCTURES DISPOSED IN SIDE-BY-SIDE SPACED-APART RELATION WITHIN SAID FEMALE MOLD STRUCTURE AND EACH INCLUDING AN IMPERFORATE BOTTOM WALL AND UPSTANDING SIDE WALLS INTEGRALLY FORMED THEREWITH, A PLURALITY OF POSITIONING CAMS FIXEDLY MOUNTED ON THE UPPER PERIPHERAL PORTION OF CERTAIN OF SAID PLATES OF SAID FEMALE MOLD STRUCTURE AND PROJECTING OUTWARDLY THEREFROM, A PLURALITY OF POSITIONING CAMS FIXEDLY MOUNTED ADJACENT THE UPPER PERIPHERAL PORTION OF THE SIDE WALLS OF EACH OF SAID MALE MOLD STRUCTURES AND PROJECTING OUTWARDLY THEREFROM, SAID LAST MENTIONED CAM ENGAGING THE UPPER PERIPHERAL EDGE OF CERTAIN OF SAID PLATES AND ALSO ENGAGING SAID FIRST MENTIONED POSITIONING CAM TO AUTOMATICALLY POSITION AND SUSPEND EACH OF SAID MALE MOLD STRUCTURES IN PREDETERMINED SPACED-APART, SIDE-BY-SIDE RELATION WITHIN SAID FEMALE MOLD STRUCTURES AND ALSO POSITIONING EACH OF SAID MALE MOLD STRUCTURES IN PREDETERMINED SPACED RELATION FROM THE INNER SURFACES OF SAID PLATES AND THE UPPER SURFACE OF SAID BASE WHEN SAID PLATES ARE IN THE OPERATIVE CLOSED POSITION. AND A PLURALITY OF ELONGATE RETAINING RODS EXTENDING BETWEEN AND BEING DETACHABLY CONNECTED WITH THE BASE AND WITH THE UPPER PERIPHERAL EDGE PORTION OF THE SIDE WALLS OF EACH OF SAID MALE MOLD STRUCTURES EXTERIORLY OF THE FEMALE MOLD STRUCTURE AND BEING OPERATIVE FOR RETAINING SAID MALE MOLD STRUCTURES IN THEIR SIDE-BY-SIDE PREDETERMINED SPACED RELATION WITHIN SAID FEMAL MOLD STRUCTURES DURING THE MOLDING OPERATION AS CEMENTITIOUS MATERIAL IS INTRODUCED INTO THE SPACE BETWEEN THE MALE AND FEMALE MOLD STRUTURES.
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