Lost plastic pattern for casting

Metal founding – Means to shape a forming surface – Pattern

Patent

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Details

B22C 702

Patent

active

039425835

ABSTRACT:
Hollow "lost plastic" patterns for metal casting molds are built up from plastic plate or sheet material bonded to internal supporting framing; the elements being formed of substantially ashless plastic solid or foam rod sheets or laminates easily sculptured or bent to desired shape when heated to provide even large and complex hollow patterns with a comparatively small expenditure of pattern material and labor.

REFERENCES:
patent: 1392496 (1921-10-01), Hain
patent: 2348935 (1944-05-01), Smith
patent: 2456424 (1948-12-01), Neiman
patent: 2830343 (1958-04-01), Shroyer
patent: 3169288 (1965-02-01), Dewey
patent: 3351123 (1967-11-01), Payne
patent: 3381929 (1968-05-01), Bancker
patent: 3488027 (1970-01-01), Evans
Molder 1 & C; Bureau of Naval Personnel; (Navpers 10585-A), 1964 p. 54.

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