Concrete pipe making machine
AssigneeHawkeye Concrete Products Co.
InventorsHartzell H. Schmidgall, Jon A. Schmidgall
Life of this patent
Estimating the term…
Abstract
A machine for making concrete pipe in which multiple-form sets can be coupled into one module so as to increase production output of the machine without an increase in machine manpower. The multiple-form modules are provided with adapters that make them compatible with conventional single-mode form sets and all cycles of production so that multiple-form modules can be used simultaneously with single-mode form sets. The multiple-form sets also utilize core vibration throughout the fill cycle, but unlike conventional core vibration systems, the amplitude and direction of vibration are continuously varied to distribute the vibration uniformly throughout the length of the pipe being formed.
Claims7
In an apparatus for producing concrete pipe using form sets and having a fill station, a pressure head station, a stripping station and turnable means for supporting form sets and moving them successively from station to station, a module having at least two form sets coupled together, said module comprising a supporting base, at least two cores supported on the base, means to position the cores on the base, vibration isolation means between the cores and base to provide for limited relative movement of the cores relative to the base, a jacket positionable over each core to define a space in which the concrete is to be filled to form a finished pipe or the like, connecting means for connecting all jackets in a module together so that the jackets can be handled as a unit, said connecting means including a feed pan connecting the jackets at their upper ends and to receive the concrete at the fill station, movable distributing means in the feed pan to feed the concrete into the form sets, and vibrators combined with each of the cores for vibrating the cores to assist in distributing and compacting the concrete in the form sets.
Dependencies are inferred from the claim text.