Apparatus for forming an expanded foam form liner including a co

Details Apparatus for forming an expanded foam form liner including a co Apparatus for forming an expanded foam form liner including a co

1984-05-07

1985-08-20

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Preform severing means

B29C 1700

Patent

active

045361452

ABSTRACT:
An apparatus for use in cutting a contoured surface in the face of a polystyrene foam block for use in casting concrete, wherein the contoured surface will form the mold surface. The apparatus comprises means for supporting a block of polystyrene foam material, a generally rigid wire having opposite ends, and means for heating the helical wire such that the wire can cut through the polystyrene foam block. The apparatus also comprises means for supporting the heated wire for controlled vertical and horizontal movement with respect to the polystyrene foam block, and with respect to a reference position.

REFERENCES:
patent: 693760 (1902-02-01), Walker
patent: 734124 (1903-07-01), Frey
patent: 752464 (1904-02-01), Murphy
patent: 3734991 (1973-05-01), Vrijma

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