Device for making earthen blocks

Details Device for making earthen blocks Device for making earthen blocks

1990-09-12

1993-02-23

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Feed control of material en route to shaping area

264 404, 425256, 425354, 425419, 425421, B29C 3100, B29C 4300

Patent

active

051888483

ABSTRACT:
An apparatus for making earthen blocks and having a hopper, structure for loading the hopper with a compactible material, structure for verifying that the hopper is filled to a predetermined level, structure for moving the hopper to a mold cavity and emptying the contents into the mold cavity, a first press having a first punch to be forced into the mold cavity to compress the material therein and a second press having a second punch that is held in a fixed position until a predetermined force is exerted by the first press, whereupon the second punch follows movement of the first punch.

REFERENCES:
patent: 2449257 (1948-09-01), Tucker
patent: 2549642 (1951-04-01), Seelig
patent: 3187401 (1955-06-01), O'Donnell et al.
patent: 3604075 (1971-09-01), Locke et al.
patent: 3883278 (1975-05-01), Hass
patent: 3887685 (1975-06-01), Stelzmuller
patent: 3898024 (1975-08-01), Wockener
patent: 4260346 (1981-04-01), Anderson, Jr. et al.
patent: 4260352 (1981-04-01), Balhorn
patent: 4534721 (1985-08-01), Iwasaki et al.

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