Mechanical expander for elastic molds

Details Mechanical expander for elastic molds Mechanical expander for elastic molds

1975-04-07

1976-03-30

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Shaping surface including means to release or remove product...

By means flexing or deforming the mold

425803, 425DIG44, 249127, 249 66C, B29C 400

Patent

active

039472094

ABSTRACT:
An elastic candle mold has a plurality of circumferentially spaced metal plates embedded in the side walls of the mold and which are pulled radially outward simultaneously by individual pull cables, each cable having one end attached to the plate and the opposite end attached to the movable element of an air powered piston-cylinder or other actuator device. A spring mounted on each cable attachment at the mold serves to return the mold and cables to a contracted position for the mold when the piston-cylinder device is reversed.

REFERENCES:
patent: 923521 (1909-06-01), Herron
patent: 2337036 (1943-12-01), Erdle
patent: 3161792 (1965-01-01), Goldfarb
patent: 3161938 (1964-12-01), Graham
patent: 3233284 (1966-02-01), MacMillan
patent: 3319290 (1967-05-01), Clark
patent: 3797979 (1974-03-01), Greenwood

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