US3589431A — Mold making equipment utilizing vertical mold blo…

Claim 1

Independent Claim 248 words

A device for making sand molds which comprises permanent form boxes having end filler openings, a turntable comprising at angularly spaced stations a plurality of pairs of means for supporting the form boxes for relative movement on predetermined paths to and from positions for cooperation as an assembly to make a complete mold, operating means for actuating the form boxes to said positions and for retracting them from said positions, means for storing pattern plates on the turntable adjacent the path of such movement, means providing a way on which a pattern plate is movable between a storage position and a position intervening between the form boxes as a part of said assembly when the latter are in the said positions for cooperation, means for advancing and retracting the pattern plate upon said way, means for filling the form boxes through respective openings with sand at opposite sides of the plate, opposing means movable toward the plate and into the form boxes for compressing the sand to make half molds in the respective form boxes, the said actuating means being adapted to separate the form boxes and half molds from the pattern plate and to retract the pattern plate from between the form boxes and the half molds, means for reassembling the form boxes and half molds, a mold receiving table adjacent the turntable, means for positioning the form boxes above it, and means for ejecting the assembled half molds onto the receiving table from the form boxes.

Claim 2

Independent Claim 248 words

A device for making sand molds which comprises permanent form boxes having end filler openings, a turntable comprising at angularly spaced stations a plurality of pairs of means for supporting the form boxes for relative movement on predetermined paths to and from positions for cooperation as an assembly to make a complete mold, operating means for actuating the form boxes to said positions and for retracting them from said positions, means for storing pattern plates on the turntable adjacent the path of such movement, means providing a way on which a pattern plate is movable between a storage position and a position intervening between the form boxes as a part of said assembly when the latter are in the said positions for cooperation, means for advancing and retracting the pattern plate upon said way, means for filling the form boxes through respective openings with sand at opposite sides of the plate, opposing means movable toward the plate and into the form boxes for compressing the sand to make half molds in the respective form boxes, the said actuating means being adapted to separate the form boxes and half molds from the pattern plate and to retract the pattern plate from between the form boxes and the half molds, means for reassembling the form boxes and half molds, a mold receiving table adjacent the turntable, means for positioning the form boxes above it, and means for ejecting the assembled half molds onto the receiving table from the form boxes.

Claim 3

Dependent Claim 65 words

Mold making apparatus according to claim in which the means for filling the form boxes includes means for pneumatically extruding sand from a magazine and means for venting air from the box, said apparatus further including means for supplying ejection fluid under compression through said venting means concurrently with the application of mechanical ejection pressure for displacing from the form boxes the molds formed therein.

Claim 4

Dependent Claim 31 words

Apparatus according to claim 1 in which the means for supporting the form boxes includes a means for rotating the assembly of form boxes and pattern plate from horizontal to vertical.

Claim 5

Dependent Claim 62 words

Apparatus according to claim 1 in which the means supporting the form boxes includes means for rotating the form boxes between generally horizontal and generally vertical positions, the form boxes having end filling ports and the apparatus including separate nozzles for the respective form boxes, and means for effecting relative movement in a direction to engage said nozzles with the form boxes.

Claim 6

Dependent Claim 79 words

Apparatus according to claim 1 in which the supporting means comprises a turntable having a plurality of pattern plate ways generally comprising radially projecting arms, the said supporting means further including individual form box supports mounted on said arms for movement to and from each other, said pattern plate storing means comprising a way carried in part by said turntable and in part by said arms, the said form boxes being presented by turntable rotation successively to said nozzles.

Claim 7

Dependent Claim 133 words

Apparatus according to claim 1 in which the form boxes have open faces and the opposing means for compressing the sand comprises a pair of platens and means supporting the platen between first fully retracted positions, second positions in which the platens are advanced from the retracted positions into substantial registry with the form boxes to close the faces thereof to confine the sand, and third positions in which the platens are advanced telescopically into the form boxes for comPression of sand therein, together with means for times movement of said platens between the several positions aforesaid, said means for filling the form boxes with sand and said platens having supporting means adjacent the turntable and with which successive assemblies of form boxes and pattern plates register in one position of the turntable.

Claim 8

Dependent Claim 39 words

Apparatus according to claim 6 in which the respective platens are provided with edge seals yieldably carried thereby and engageable with the margins of respective form boxes as the respective platens are in the stated second and third positions.

Claim 9

Dependent Claim 60 words

Apparatus according to claim 6 in further combination with means of introducing sand forcibly into the respective form boxes and for venting air from the form boxes as the form boxes are filled with sand, and means for subsequently introducing pressure fluid through said venting means into the form boxes concurrently with mechanical displacement of molds from the form boxes.

Claim 10

Dependent Claim 362 words

Mold making apparatus comprising a turntable, pairs of open form boxes, supports for the form boxes projecting from the turntable, means for indexing the turntable to register the pairs of form boxes with successive stations, the said supports including means for effecting relative movement of the form boxes between retracting and assembled positions, means for rotating the form boxes in assembled position to expose their open faces laterally, platens mounted for movement to and from the open faces of the form boxes when the latter are exposed laterally, said platens being adapted to provide temporary closure for said open faces, sand supply means including nozzles above the form box assembly for injecting the sand into the respective form boxes when the open faces thereof have been temporarily closed by said platens, means for raising the assembly of the form boxes and platens into engagement with said nozzles, means for lowering the assembly of form boxes and platens from the nozzles after the form boxes have been filled with sand, means for advancing the platen telescopically into the form boxes for the compression of the sand therein, means for with drawing the platens from the form boxes, means for rotating the assembly of form boxes to initial horizontal position, a withdrawal table at one of the stations, an elevator imposed between the withdrawal table and the turntable in a position to underlie the assembly of form boxes, means for moving the elevator upwardly into engagement with a sand mold formed in the form boxes, an opposing platen mounted for vertical movement above the elevator, means for lowering the last platen to force the sand mold and the elevator downwardly for ejection of the mold from the form boxes, a withdrawal yoke movable along the table between an advanced position adjacent the turntable and a retracted position remote from the turntable, means for positioning said yoke in advanced position during upward and downward movement of the elevator and means for actuating said yoke toward retracted position when the mold ejected from the form box is at the level of the withdrawal table, whereby such mold is pulled across the elevator onto the withdrawal table.

Claim 11

Dependent Claim 362 words

Mold making apparatus comprising a turntable, pairs of open form boxes, supports for the form boxes projecting from the turntable, means for indexing the turntable to register the pairs of form boxes with successive stations, the said supports including means for effecting relative movement of the form boxes between retracting and assembled positions, means for rotating the form boxes in assembled position to expose their open faces laterally, platens mounted for movement to and from the open faces of the form boxes when the latter are exposed laterally, said platens being adapted to provide temporary closure for said open faces, sand supply means including nozzles above the form box assembly for injecting the sand into the respective form boxes when the open faces thereof have been temporarily closed by said platens, means for raising the assembly of the form boxes and platens into engagement with said nozzles, means for lowering the assembly of form boxes and platens from the nozzles after the form boxes have been filled with sand, means for advancing the platen telescopically into the form boxes for the compression of the sand therein, means for with drawing the platens from the form boxes, means for rotating the assembly of form boxes to initial horizontal position, a withdrawal table at one of the stations, an elevator imposed between the withdrawal table and the turntable in a position to underlie the assembly of form boxes, means for moving the elevator upwardly into engagement with a sand mold formed in the form boxes, an opposing platen mounted for vertical movement above the elevator, means for lowering the last platen to force the sand mold and the elevator downwardly for ejection of the mold from the form boxes, a withdrawal yoke movable along the table between an advanced position adjacent the turntable and a retracted position remote from the turntable, means for positioning said yoke in advanced position during upward and downward movement of the elevator and means for actuating said yoke toward retracted position when the mold ejected from the form box is at the level of the withdrawal table, whereby such mold is pulled across the elevator onto the withdrawal table.

Claim 12

Independent Claim 190 words

A device for making sand molds which comprises complementary open-faced form boxes having air vents and having sand-receiving openings in corresponding ends, a pattern plate with opposite faces, means for introducing the pattern plate between such boxes and for closing the boxes upon the pattern plate to constitute a mold assembly, said sand-receiving openings being remote from the pattern plates, means mounting the assembly for rotation between a first position in which the pattern plate is substantially upright and a second position in which the plate is generally horizontal, means for introducing sand into the respective mold boxes downwardly through said openings when the assembly is in said first position, ram means mounted for operation oppositely through said boxes toward the pattern plate for compressing Sand against the pattern plate and making molds in said boxes, means for rotating the assembly to the second position, means for separating the said boxes and molds from the pattern plate, means for retracting the pattern plate from between the boxes and molds, means for reassembling the boxes and molds with each other, and means for withdrawing the assembled molds from the assembled boxes.

Claim 13

Independent Claim 190 words

A device for making sand molds which comprises complementary open-faced form boxes having air vents and having sand-receiving openings in corresponding ends, a pattern plate with opposite faces, means for introducing the pattern plate between such boxes and for closing the boxes upon the pattern plate to constitute a mold assembly, said sand-receiving openings being remote from the pattern plates, means mounting the assembly for rotation between a first position in which the pattern plate is substantially upright and a second position in which the plate is generally horizontal, means for introducing sand into the respective mold boxes downwardly through said openings when the assembly is in said first position, ram means mounted for operation oppositely through said boxes toward the pattern plate for compressing Sand against the pattern plate and making molds in said boxes, means for rotating the assembly to the second position, means for separating the said boxes and molds from the pattern plate, means for retracting the pattern plate from between the boxes and molds, means for reassembling the boxes and molds with each other, and means for withdrawing the assembled molds from the assembled boxes.

Claim 14

Independent Claim 261 words

A device for making sand molds which comprises a turntable, pairs of open-faced form boxes with end filler openings at angularly spaced points upon the turntable, a pattern plate for assembly with a pair of form boxes at each such point, a way upon which the pattern plate is reciprocable generally radially with reference to the turntable to and from position between the form boxes of the respective pairs, means for advancing a pattern plate between its respective boxes and for closing the boxes upon such pattern plate to constitute an assembly, means at a predetermined station beside the turntable for introducing sand into the respective boxes of the assembly, means for rotating the assembly adjacent said station to present the respective filling openings of the said boxes upwardly to the sand introducing means, opposing rams at said station movable toward each other into engagement with the upright boxes preliminary to the filling thereof, means for further advancing said rams into the filled boxes for compression of sand filled into said boxes to form molds against the pattern plate, means for retracting said rams from the boxes, means for rotating the assembly to a generally horizontal position and moving it back onto the turntable, means for separating the boxes and for withdrawing the intervening pattern plate upon its way, means for rotating the remaining box and mold assembly outwardly of the turntable, a receiving table at another station adjacent the turntable with which said assembly registers when thus rotated outwardly, and means for ejecting from said boxes the molds formed therein.

Claim 15

Independent Claim 261 words

A device for making sand molds which comprises a turntable, pairs of open-faced form boxes with end filler openings at angularly spaced points upon the turntable, a pattern plate for assembly with a pair of form boxes at each such point, a way upon which the pattern plate is reciprocable generally radially with reference to the turntable to and from position between the form boxes of the respective pairs, means for advancing a pattern plate between its respective boxes and for closing the boxes upon such pattern plate to constitute an assembly, means at a predetermined station beside the turntable for introducing sand into the respective boxes of the assembly, means for rotating the assembly adjacent said station to present the respective filling openings of the said boxes upwardly to the sand introducing means, opposing rams at said station movable toward each other into engagement with the upright boxes preliminary to the filling thereof, means for further advancing said rams into the filled boxes for compression of sand filled into said boxes to form molds against the pattern plate, means for retracting said rams from the boxes, means for rotating the assembly to a generally horizontal position and moving it back onto the turntable, means for separating the boxes and for withdrawing the intervening pattern plate upon its way, means for rotating the remaining box and mold assembly outwardly of the turntable, a receiving table at another station adjacent the turntable with which said assembly registers when thus rotated outwardly, and means for ejecting from said boxes the molds formed therein.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1974-06-28	1974-12-28	1975-06-29	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1978-06-28	1978-12-28	1979-06-29	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1982-06-28	1982-12-28	1983-06-29	$7700.00	Window Closed / Lapsed

Mold making equipment utilizing vertical mold blowing and plural rammers

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