Abstract: A threading member secured to an end of a cot roll of a strand chopping apparatus and having a cam surface for laterally moving a strand to the periphery of the cot roll as the cot roll is rotated at normal speed and the strand is held in engagement with the cam surface.
Abstract: End caps of the tank are generally spherical adjacent the axis of the tank and frusto-conical adjacent the circumference of the tank to eliminate voids normally occurring in the backfill under fully hemispherical end caps.