Abstract: Improvements in three-piece concrete pipe molds and means and devices for handling and transporting such molds both when filled and empty; improvements in mold handling apparatus, or devices attachable both to the lift mechanism of a vehicle and a three-piece pipe mold and useable for such purposes; a versatile adaptor which will handle and transport, in its various configurations, concrete pipe molds of the most varied sizes and configurations when mounted on the lift mechanism of a vehicle.

Abstract: A cap rest assembly to support a closed bore cap slightly above the upper periphery of the pipe jacket in a packerhead/vibration system concrete pipe machine, which has a slump filler attachment enabling making of a green pipe including the upper end in a continuous operation by overfilling the jacket slightly, the cap rest assembly supporting and enabling automatic release of the closed bore cap when the slump filler compression ring depresses the closed bore cap and overfills concrete into the top end of the pipe jacket to complete the green pipe.

Abstract: Improvements in three-piece concrete pipe molds and means and devices for handling and transporting such molds both when filled and empty; improvements in mold handling apparatus, or devices attachable both to the lift mechanism of a vehicle and a three-piece pipe mold and useable for such purposes; a versatile adaptor which will handle and transport, in its various configurations, concrete pipe molds of the most varied sizes and configurations when mounted on the lift mechanism of a vehicle.

Abstract: A novel vibrating core apparatus for use with a concrete pipe making machine. The novel apparatus includes a core, vertically movable into and out of a pipe form, a series of vibrators attached along the interior side wall of the core, an upwardly movable system operative by fluid pressure for raising and lowering the core, and an interlocking connection between a standard packerhead, which distributes cementitious material about the interior of the pipe form, and the upper portion of the core. The packerhead is designed to rotate while forming the pipe; the core does not rotate and the connecting means between the two is easily attached and disengaged from the packerhead.