US2535335A - Apparatus for chill casting - Google Patents

Apparatus for chill casting Download PDF

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Publication number
US2535335A
US2535335A US15902A US1590248A US2535335A US 2535335 A US2535335 A US 2535335A US 15902 A US15902 A US 15902A US 1590248 A US1590248 A US 1590248A US 2535335 A US2535335 A US 2535335A
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Prior art keywords
mold
lever
tap
hole
casting
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Expired - Lifetime
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US15902A
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English (en)
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Thevenin Marcel
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D33/00—Equipment for handling moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/001—Shrouded propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
    • B64C23/005—Influencing air flow over aircraft surfaces, not otherwise provided for by other means not covered by groups B64C23/02 - B64C23/08, e.g. by electric charges, magnetic panels, piezoelectric elements, static charges or ultrasounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C29/00—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft
    • B64C29/0008—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft having its flight directional axis horizontal when grounded
    • B64C29/0016—Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft having its flight directional axis horizontal when grounded the lift during taking-off being created by free or ducted propellers or by blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/28—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto using fluid jets to influence the jet flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/36—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto having an ejector
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/066—Units characterised by the partition, baffle or like element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • F16F9/3214—Constructional features of pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/3415—Special valve constructions; Shape or construction of throttling passages characterised by comprising plastics, elastomeric or porous elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3482—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body the annular discs being incorporated within the valve or piston body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D11/00—Feed-water supply not provided for in other main groups
    • F22D11/02—Arrangements of feed-water pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/43—Aeroplanes; Helicopters

Definitions

  • the present invention relates to an improved apparatus for casting wherein the molten metal is cast in a series of molds intermittently moved so as to position each mold successively below a tap-hole which is opened and closed for the time necessary for a casting operation.
  • the opening of the mold for discharge of the finished casting is determined in synchronous timed relationship to the intermittent movements of the molds and the closure of a mold prior to casting is similarly determined.
  • An object of the invention is to provide an apparatus so that a continuous operation of the furnace may be secured so that losses in heat are reduced to a minimum thereby economizing on fuel or electricity.
  • Fig. 2 is a front View of the apparatus according to Fig. 1 with one of the molds located in casting position under the tap-hole of the furnace;
  • Fig. 4 is a partial diagrammatic view with certain elements in cross-section showing the electromagnetic means for opening and closing the tap-hole;
  • Fig. 5 is a detailed view illustrating a modified construction for opening and closing a separable mold.
  • a melting furnace is shown at ID for the alloy or metal to be cast which is provided with a casting jet or nozzle Under the furnace l there is located a circular plate 2
  • is supported on a ball bearing thrust bearing l which is in turn supported on a plate 22 having a laterally extending projecttion 22.
  • the plate 22 has fixed thereto a helical gear 24 which is concentric with the tube 23 and meshes with a worm gear 25.
  • the worm gear 25 is fixed to a pulley P which is driven by a motor M through the transmission belt 21.
  • is intermittently driven by means of the lugs 25 which are slidable within a slot formed in the plate 2
  • the lugs 25 cooperate with the projection 22 upon the plate 22 in order to drive the plate 2
  • a driving lug 26 is removed from contact with the plate 22 then the drive of the plate 2
  • This comprises a lever 33 freely rotatable upon the plate 22.
  • the lever 33' i also adapted to be driven by the projection 22' through a drive lug 25 which is mounted vertically slidable in the lever 33.
  • the lug 26' is urged upwardly by a spring 34 and is moved away from the path of the projection 22 when acted upon by a cam 28' mounted upon a slideway 38 having two arms between which the lever 33 may freely move.
  • the lever 33 is retained in or restored to its initial position when not driven by means of a cable 35 having one end attached thereto.
  • the cable 35 passes over rollers 42 and 43 which are rotatably mounted on the frame 8.
  • the other end of the cable 35 is attached to a member 86 supported on a carriage 65 which is horizontally slidable in a slideway formed in the frame 8.
  • the carriage 65 is returned to initial position by a return spring 61 having one end secured to the frame 8 and the other end to the carriage 65.
  • the means for opening and closing the tap.- hole H is preferably accomplished by electromagnetic means will now be described.
  • a substantially horizontal balance lever l4 pivoted on a shaft 2 mounted upon a, fixed support 2.
  • the lever I4 is provided. with a helical groove it into which a pin t2 upon the rod 12 projects.
  • the lever M- coacts with a pin I mounted on a part: ii which forms the end of a vertical arm l5. comprising a pair of threaded rods I5 which are interconnected by means of a turn buckle 8.
  • the arm [-5 at its lower end carries a member 3 pivoted upon a pivot pin 5 mounted upon the armature ll of an electromagnet A.
  • the armature I is pivoted at one end at 4.
  • a spring 20 secured at one end to the part 6 and at the other end to a bracket 5 secured to the furnace maintains the armature H away from the electro-- magnet A by pivoting the armature ['1' about pivot 4.
  • Fig. 4 shows the position of the parts when casting is taking place and the spring 20 is: in extended condition.
  • a second electromagnet B having a movable armature 4i]. pivoted at one end on a pivot 4
  • the current for both electromagnets A and B is sup-- plied through the lines C and C.
  • the contact plates F and G are connected to a suitably insulated circuit shown in dotted lines to the terminals J and J located at a predetermined level upon each mold so that when the molten metal reaches such level a circuit is established between J and J.
  • the terminals J and J are furthermore; electrically connected to a pair of contacts K and. K, which are located rearwardly of the plane shown in Fig. 4.
  • the contacts K and K will engage one another in case the mold for any reason is imperfectly closed.
  • the line C is provided with a pair of contacts L and L which are in contact with one. another only when, the armature as having an extension 45 exerts pressure upon contact" L in order to maintain it in contact with the conmold accurately positioned under the tap-hole H the contact plates F and G will move the contacts F and G upwardly and close contacts D, D and E, E.
  • the contacts K and K would be brought into engagement and since these contacts are electrically connected with the terminals J and J theeffect is the same as set forth above.
  • the electromagnet B will be energized and the current broken at L, L" to deenergize the electromagnet A.
  • Fig. 4 shows a preferable embodiment applicable for instance in casting a wheel W.
  • the pin 53 on the rod 53 slides within a slot 50 provided in the fork 64.
  • the end 53 of the pin 53 serves as a core for the hub of the wheel when the mold isclosedfor a casting operation.
  • the lever 48 is rotated clockwise about its pivot 4'9 the extension 53 is moved before the fork 6' 3 and the movable section 45 is withdrawn.
  • a clockwise movement-of the lever #8 directly moves the fork 64 with the mold section 45.
  • the ensuing pivoted movement of the lever 52* moves the pin 72 towards the right and thereby disengages the central extension 53
  • the roller 51 mounted freely rotatable on the pivotal shaft 13 engages a lever 5 t pivoted at 5% and thelever 54 moves a pin 63 fixed to a bushing slida-bly mounted on the rod 53.
  • the bushing has mounted thereon spaced pins 62 which are operative to positively eject the casting.
  • a return spring 60 restores the lever 5'4 to its initial position upon closing of the mold and a set screw 6
  • the above described apparatus generally operates as follows:
  • the rod I2 is raised by the electromagnet arrangement above described.
  • the rod [2 is moved to close the tap-hole ii.
  • the plate 25 remains stationary since the projection 22' must travel a half revolution before it will encounter the other lug 26 and the return of rotation of the plate 22 has been predetermined to secure a sufficient dwell period for the mold carrying plate.
  • the mold carrying plate makes one half revolution for each revolution of the driving plate. Immediately after a mold has been opened and during the initial phase of its rotational movement such mold will encounter the spring blades 68 which will eject any casting wedged therein.
  • the apparatus described is entirely automatic in its operation and the carriage may be arranged in any suitable manner other than that shown and in particular may be arranged so as to be capable of operating the lever 48 when such lever is in horizontal position as shown in Fig. 5.
  • the rod serving to close the tap-hole may be made of cast-iron protected with a special surfacecoating suitably comprising sodium silicate, whiting and graphite. Care should be taken not to put it to use until the coating is perfectly dry. The rod rests on agraphite seating surface.
  • the open period of a mold may be put to use for cleaning and cooling it with a jet of compressed air or a liquid spray, depending on the size of the casting.
  • the essential feature of the invention primarily resides in the general organization of the casting operation as described above. It will be understood, for example, that this feature will be preserved if in the case of an assembly including two molds rectilineal reciprocation rather than a circular movement is imparted to said assembly so as successively to bring them beneath the tap-hole of the furnace.
  • a casting apparatus comprising a rotating support carrying a plurality of separable molds and adapted to successively position each of said molds under a tap-hole
  • said support of means for moving said support intermittently comprising a continuously rotating member coaxial with said rotating support and having a radial projection, lugs slidably mounted in said support and normally projecting into the path of said radial projection, there being a lug for each mold on the support and a fixed cam in the path of travel of said lugs to force said lugs out of engagement with said radial projection, said tap-hole and said cam bein so positioned with respect to each other that said cam is operative to disconnect a lug from driven engagement with the said projection when its related mold reaches a position under said tap-hole.
  • a casting apparatus comprising a moving support carrying a plurality of separable molds and adapted to successively position each of said molds under a tap-hole
  • said support of means for moving said support intermittently comprising a continually moving member associated with said moving support and having a projection, lugs slidably mounted in said support and normally projecting into the path of said projection, there being a lug for each mold on the support and a fixed cam in the path of travel of said lugs out of engagement with said projection, said tap-hole and said cam being so positioned with respect to each other that said cam is operative to disconnect a lug from driven engagement with the said projection when its related mold reaches a position under said taphole.
  • a castirg apparatus comprising a rotating support carrying a plurality of separable molds and adapted to successively position each of said molds under a tap-hole
  • said support of means for moving said support intermittently comprising a continuously rotating member coaxial with said rotatin support and having a radial projection, lugs slidably mounted in said support and normally projecting into the path of said radial projection, there being a lug for each mold on the support and a fixed cam in the path of travel of said lugs to force said lugs out of engagement with said radial projection, said tap-hole and said cam being so positioned with respect to each other that said cam is operative to disconnect a lug from driven engagement with the said projection when its related mold reaches a position under said taphcle, a lever pivoted on said rotating member, a flexible connection attached to the free end of said lever; a sliding block controlled by said flexible connection; return spring means associated with said block, a second lever for each mold pivotally attached to said rotating
  • a casting apparatus comprising a rotating support carrying a plurality of separable molds and adapted to successively position each of said molds under a tap-hole
  • said support of means for moving said support intermittently comprising a continuously rotating member coaxial with said rotating support and having a radial projection, lugs slidably mounted in said support and normally projecting into the path of said radial projection, there being a lug for each mold on the support and a fixed cam in the path of travel of said lugs to force said lugs out of engagement with said radial projection, said tap-hole and said cam being so positioned with respect to each other that said cam is operative to disconnect a lug from driven engagement with the said projection when its related mold reaches a position under said tap-hole, a first lever pivoted about the axis of said rotating member; a second slidable lug in said first lever also arranged in the path of said radial projection; a second fixed cam in the path of travel of said second lug to force said
  • a casting apparatus comprising a rotating support carrying a plurality of separable molds and adapted to successively position each of said molds under a tap-hole
  • said support of means for moving said support intermittently comprising a continuously rotating member coaxial with said rotating support and having a radial projection, lugs slidably mounted in said support and normally projecting into the path of said radial projection, there being a lug for each mold on the support and a fixed cam in the path of travel of said lugs to force said lugs out of engagement with said radial projection, said tap-hole and said cam being so positioned with respect to each other that said cam is operative to disconnect a lug from driven engagement with the said projection when its related mold reaches a position under said tap-hole
  • electromechanical means for controlling said tap-hole comprising in combination; a plugging member for said tap-hole a first electromagnet having an armature; an energizing circuit for said electromagnet; a first pair of normally open contacts in said electrical
  • said electromechanical means further comprise a pair of conductive strips for each mold assembly, each strip being electrically connected with a related one of said fourth contacts and said strips being so shaped as to engage each other when said mold portions are not applied tightly against each other.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
US15902A 1947-03-21 1948-03-19 Apparatus for chill casting Expired - Lifetime US2535335A (en)

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FR2535335X 1947-03-21

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CH (1) CH272329A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686864A (en) * 1951-01-17 1954-08-17 Westinghouse Electric Corp Magnetic levitation and heating of conductive materials
US2718679A (en) * 1952-07-16 1955-09-27 Combustion Eng Turret drive facilities for mold assembling installation
US2743491A (en) * 1953-10-20 1956-05-01 Berry Otto Carter Foundry equipment
US2763904A (en) * 1952-10-29 1956-09-25 Sukava Armas John Automatic casting machine
US2821378A (en) * 1955-02-28 1958-01-28 Ajax Engineering Corp Tapping device for molten metals
US2843894A (en) * 1955-03-16 1958-07-22 Winkel Automatic battery parts casting machine
US2861303A (en) * 1956-07-13 1958-11-25 Lombard Corp Rotary casting machine
US3908748A (en) * 1972-04-07 1975-09-30 Alois Noisser Device for automatically casting of molten material

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US698591A (en) * 1900-02-15 1902-04-29 Curtis H Veeder Casting-machine.
US928246A (en) * 1908-09-02 1909-07-20 Fred N Cline Casting-machine.
US1239808A (en) * 1917-04-30 1917-09-11 Morris Process Of New York Inc Die casting or forging apparatus.
US1491964A (en) * 1922-09-26 1924-04-29 Conley Tinfoil Corp Art of casting metal slabs
US1690750A (en) * 1926-08-20 1928-11-06 Fredellia H Moyer Method of pouring steel
US1724914A (en) * 1929-08-20 Casting machine
US1792545A (en) * 1927-11-10 1931-02-17 Aluminum Products Company Method of casting blooms of aluminum
US1925495A (en) * 1929-09-16 1933-09-05 Delco Remy Corp Casting machine
US2195071A (en) * 1938-03-07 1940-03-26 Scovill Manufacturing Co Apparatus for pouring molten metal

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1724914A (en) * 1929-08-20 Casting machine
US698591A (en) * 1900-02-15 1902-04-29 Curtis H Veeder Casting-machine.
US928246A (en) * 1908-09-02 1909-07-20 Fred N Cline Casting-machine.
US1239808A (en) * 1917-04-30 1917-09-11 Morris Process Of New York Inc Die casting or forging apparatus.
US1491964A (en) * 1922-09-26 1924-04-29 Conley Tinfoil Corp Art of casting metal slabs
US1690750A (en) * 1926-08-20 1928-11-06 Fredellia H Moyer Method of pouring steel
US1792545A (en) * 1927-11-10 1931-02-17 Aluminum Products Company Method of casting blooms of aluminum
US1925495A (en) * 1929-09-16 1933-09-05 Delco Remy Corp Casting machine
US2195071A (en) * 1938-03-07 1940-03-26 Scovill Manufacturing Co Apparatus for pouring molten metal

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686864A (en) * 1951-01-17 1954-08-17 Westinghouse Electric Corp Magnetic levitation and heating of conductive materials
US2718679A (en) * 1952-07-16 1955-09-27 Combustion Eng Turret drive facilities for mold assembling installation
US2763904A (en) * 1952-10-29 1956-09-25 Sukava Armas John Automatic casting machine
US2743491A (en) * 1953-10-20 1956-05-01 Berry Otto Carter Foundry equipment
US2821378A (en) * 1955-02-28 1958-01-28 Ajax Engineering Corp Tapping device for molten metals
US2843894A (en) * 1955-03-16 1958-07-22 Winkel Automatic battery parts casting machine
US2861303A (en) * 1956-07-13 1958-11-25 Lombard Corp Rotary casting machine
US3908748A (en) * 1972-04-07 1975-09-30 Alois Noisser Device for automatically casting of molten material

Also Published As

Publication number Publication date
CH272329A (fr) 1950-12-15

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