Apparatus for making sand-resin molds

Details Apparatus for making sand-resin molds Apparatus for making sand-resin molds

1974-06-27

1976-03-30

Husar, Francis S.

Metal founding

Means to shape a forming surface

Including means for compacting particulate fluent mold...

164 21, B22C 1500

Patent

active

039467961

ABSTRACT:
In foundry core-making or mold-making apparatus employing a rotary mixer working in a chamber and mixing together a sand-resin mix and a sand-catalyst mix to produce a cold quick-setting mixture that is then quickly discharged through the bottom of the chamber into a core-blower or molding machine, the chamber is fixed and has two separately movable sliding shutters controlling openings in its floor (it may be one long opening), one shutter controlling discharge into the blower or molding machine and the other controlling discharge of any residue to a waste chute. Preferably the first shutter uncovers a peripheral portion of the floor first, the discharge area thus growing from the periphery in a radial inward direction.

REFERENCES:
patent: 2633859 (1953-04-01), Klosse
patent: 2852818 (1958-09-01), Shallenberger et al.
patent: 3166219 (1965-01-01), Rudd
patent: 3225396 (1965-12-01), Hansberg
patent: 3489296 (1970-01-01), Snow
patent: 3572652 (1971-03-01), Hale
patent: 3704743 (1972-12-01), Edwards
patent: 3722832 (1973-03-01), Seifert
patent: 3776675 (1973-12-01), Veneria
patent: 3822737 (1974-07-01), Edwards
patent: 3834442 (1974-09-01), Edwards

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