Vibratory core for concrete pipe making machine

Details Vibratory core for concrete pipe making machine Vibratory core for concrete pipe making machine

1975-08-01

1976-07-13

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Means withdrawing trowel type shaping member from within...

425432, 425421, B28B 2128

Patent

active

RE0289027

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.

REFERENCES:
patent: 937178 (1909-10-01), Rentzsch
patent: 1504834 (1924-08-01), Robbins
patent: 1670557 (1928-05-01), Wettstein
patent: 3334390 (1967-08-01), Steiro
patent: 3343236 (1967-09-01), Helms
patent: 3358342 (1967-12-01), Spence

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