Apparatus for actuating inner and outer forms of a concrete pipe

Details Apparatus for actuating inner and outer forms of a concrete pipe Apparatus for actuating inner and outer forms of a concrete pipe

1977-11-28

1979-05-08

Lake, Roy

Static molds

Container-type molding device

And an inner removable core to form recess or opening

249169, 249179, 249219R, B28B 2188

Patent

active

041532325

ABSTRACT:
A concrete pipe molding apparatus includes inner and outer mold forms defining an annular chamber therebetween. The outer form comprises first and second form sections. These sections are completely separable along two longitudinal gates. A clamp assembly is provided at each gate for releasably securing the outer form sections together. The clamp comprises an eccentric disc mounted for rotation on the first mold section. A locking arm is rotatably mounted on the eccentric disc. The locking arm includes a clamping hook which is releasably engageable with a flange on the second form section. A motor is operably connected to the eccentric disc for rotating the hook away from and toward the flange. The inner form comprises a pair of form portions that are separable along a gate. A mechanism is provided for collapsing the inner form to permit removal thereof from a hardened pipe.

REFERENCES:
patent: 771508 (1904-10-01), Swink
patent: 1278479 (1918-09-01), Kellar
patent: 1837092 (1931-12-01), Almquist
patent: 2683912 (1954-07-01), Serrell
patent: 3164877 (1965-01-01), Lee

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