Sand-forming apparatus
AssigneeEquipment Merchants International Inc.
InventorsGerald B. Senk, Jr., Steven J. Sigl
Life of this patent
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Abstract
A sand-forming apparatus (10) comprising a box (20), a blow tube assembly (50) and a bonnet (90). The box (20) has a cope (30) and a drag (40) which together define a cavity (21) having a shape corresponding to a desired sand-shape. The blow tube assembly (50) comprises a blowplate (55), and at least one tube (50). The bonnet (90) may be fixed to and movable with the blowplate (55). Relative movement between the cope (30), the blowplate (55) and/or the bonnet (90) converts the apparatus (10) between a sand-blowing state and a catalyst-introducing state.
Claims71
A sand-forming apparatus comprising:
- a box comprising a cope and a drag which together define a cavity-having a shape corresponding to a desired sand-shape;
- a blowtube assembly comprising a blowplate and a first tube mounted thereon, the blowtube assembly positioned to enable communication with the cavity;
- a bonnet integral with or adjacent to the blowplate;
- and
- a sealed catalyst chamber on a drag side of the box, wherein the sealed catalyst chamber communicates with a source of catalyst,
- wherein relative movement among the cope, the blowplate, and/or the bonnet, converts the apparatus among:
- a sand-blowing state whereat a sand head can communicate with the cavity via a sand passageway through the blowtube assembly;
- and
- a catalyst-introducing state whereat the sand passageway is sealed from the cavity.
A sand-forming apparatus, comprising
- a bonnet fixed to and movable with a blowplate;
- a box comprising a cope and a drag which together define a cavity having a shape corresponding to a desired sand-shape;
- wherein relative movement between the cope and the blowplate converts the apparatus between:
- a sand-blowing state whereat a sand head can communicate with the cavity via a sand passageway through a blow tube assembly, the bonnet opens to a vent window on a cope side of a box, and the vent window communicates with the cavity via cope passages;
- and
- a catalyst-introducing state whereat a sand passageway is sealed from the cavity, the bonnet defines a sealed catalyst chamber on the cope side of the box, and the sealed catalyst chamber communicates with the cavity via the cope passages, and
- wherein the apparatus further comprises a sealed catalyst chamber on a drag side of the box, wherein the sealed catalyst chamber on the drag side of the box communicates with a source of catalyst.
A method of retrofitting a sand-forming apparatus comprising a box comprising a cope and a drag which together define a cavity having a shape corresponding to the desired sand-shape;
- said retrofitting method comprising the steps of:
- providing an inner tube and an outer tube which are telescopically movable relative to each other between a sand-blowing position whereat they form a sand passageway which communicates with the cavity and a catalyst-introducing position whereat the sand passageway is sealed from the cavity;
- mounting the inner tube to a blowplate;
- mounting the outer tube to the ceiling of the cope;
- and
- wherein relative movement between the cope and the blowplate converts the apparatus between:
- a sand-blowing state whereat a sand head can communicate with the cavity via the sand passageway;
- and
- a catalyst-introducing state whereat the sand passageway is sealed from the cavity,
- wherein a bonnet is mounted to the blowplate, and the bonnet opens to a vent window which communicates with the cavity via cope passages when the apparatus is in the sand-blowing state, and the bonnet defines a sealed catalyst chamber which communicates with the cavity via the cope passages when the apparatus is in a catalyst-introducing state, and
- wherein the apparatus further comprises a sealed catalyst chamber on a drag side of the box, wherein the sealed catalyst chamber on the drag side of the box communicates with a source of catalyst.
Dependencies are inferred from the claim text.