Plastic article or earthenware shaping or treating: apparatus – Means withdrawing trowel type shaping member from within...
Patent
1978-06-30
1980-04-08
Anderson, Philip
Plastic article or earthenware shaping or treating: apparatus
Means withdrawing trowel type shaping member from within...
425427, 425432, 425447, B28B 2114, B28B 2126
Patent
active
041970748
ABSTRACT:
A machine having two packer heads operable to simultaneously make two concrete pipes. A pair of jackets mounted on a turntable are located in vertical alignment with two packer heads. A gear box mounted on a cross head is connected to downwardly directed shafts operable to rotate the packer heads. The cross head is movably mounted on an upright frame to lower the packer heads into the bottom area of the jackets. Separate controlled conveyors discharge concrete into the jackets above the packer heads. Separately rotatable funnels and stationary wiper blades are used to control the movement of concrete into the jackets. The packer heads are simultaneously rotated and elevated in the jackets to build up the cylindrical walls of the pipes. A dual bell packer is moved into engagement with the pallets at the lower end of the jackets to rotate and vibrate the pallets to form the bell sections of the concrete pipes. A pallet positioner is used to locate the pallets on the turntable.
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patent: 3518732 (1970-07-01), Foster
patent: 3551968 (1971-01-01), Fosse et al.
patent: 3752626 (1973-08-01), Trautner et al.
patent: 4118165 (1978-10-01), Christian
Anderson Philip
Hydrotile Canada Limited
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