Apparatus for producing moldings from, in particular, concrete

Details Apparatus for producing moldings from, in particular, concrete Apparatus for producing moldings from, in particular, concrete

1995-03-01

1997-03-18

Weber, Thomas R.

Plastic article or earthenware shaping or treating: apparatus

Plural shaping plungers or rolls coacting with a single...

425457, 425468, 425469, B28B 1110

Patent

active

056120656

ABSTRACT:
An arrangement for producing a molded concrete article which has a surface including zones at varying levels. The arrangement includes three groups of punches defining respective impression depths into the concrete article, and a molding device including three head plates, each of which is connected to a corresponding one of the groups of punches. An upper head plate is connected to a group of punches having a deepest impression depth. A lower head plate disposed below the upper head plate is connected to a group of punches having a shallowest impression depth. An intermediate head plate is connected to a group of punches which has an impression depth between the deepest impression depth and the shallowest impression depth, wherein the groups of punches are connected in a descending order of their impression depths to their corresponding head plates disposed successively below the upper head plate, and wherein any one group of punches connected to a head plate disposed above at least one other head plate passes through the at least one other head plate. Two guide rods suspend head plates below the upper head plate, each guide rod having a stop at a lower end thereof adapted to determine a lowest position of the corresponding one of the head plates. A load is applied to the head plates through the upper head plate.

REFERENCES:
patent: 786261 (1905-04-01), Brichta
patent: 839125 (1906-12-01), Dyer
patent: 981929 (1911-01-01), Kramer
patent: 3115678 (1963-12-01), Keen et al.
patent: 3284858 (1966-11-01), Taccone
patent: 3534450 (1970-10-01), Ipsen
patent: 3642419 (1972-02-01), Toksvig
patent: 3764244 (1973-10-01), Hurley et al.

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