Air impact sand-box moulding machine

Details Air impact sand-box moulding machine Air impact sand-box moulding machine

1990-04-03

1991-04-16

Batten, Jr., J. Reed

Metal founding

Means to shape a forming surface

Including means for compacting particulate fluent mold...

164 37, B22C 1500

Patent

active

050074776

ABSTRACT:
A motor is mounted on a support positioned under a sand-supplying hopper. The motor is provided with sand-stirring vanes and has a protective plate to protect the motor from sand discharges. An air discharge valve is provided annularly outside the hopper and includes an annular plunger which has a dihedral-shaped front face for closing a correspondingly-shaped annular aperture connected to an air source and is displaceably positioned within an annular chamber provided in a support ring of the valve.

REFERENCES:
patent: 3238575 (1966-03-01), Taccone
patent: 4846253 (1989-07-01), Damm

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