Apparatus for making molding sand
OwnerJoachim Laempeinventor
Life of this patent
Estimating the term…
Abstract
Apparatus for making molding sand has one or more housings defining upright cylindrical chambers and being movable with reference to a plate-like support to and from positions of register with an aperture in the support. Each chamber is normally closed at its upper end by a closure which has outlets for sand and one or more binder materials (such as clayey matter, pulverulent iron oxide, pulverized wood and/or others), and a rotary propeller is movable axially in each chamber to mix the ingredients in the circumferential direction as well as axially of the respective chamber.
Claims47
Apparatus for mixing sand with flowable binder material, such as clayey matter, pulverized wood, pulverulent iron oxide and the like, for the making of molding sand, comprising a housing defining a substantially cylindrical mixing chamber;
- means for admitting into the chamber metered quantities of sand and binder material;
- and means for mixing the contents of the chamber, including at least one mixing tool operative to mix the contents at least substantially over the entire cross-section of the chamber, and means for moving the mixing tool at least once in the axial direction of the chamber.
Apparatus for mixing sand with flowable binder material, such as clayey matter, pulverized wood, pulverulent iron oxide and the like, for the making of molding sand, comprising a housing defining a substantially cylindrical mixing chamber;
- a support for said housing;
- means for admitting into said chamber metered quantities of sand and binder material;
- means for mixing the contents of the chamber, including at least one mixing tool operative to mix the contents at least substantially over the entire cross-section of the chamber, and means for moving the mixing tool at least once in the axial direction of said chamber;
- means for moving said housing with reference to said support between at least one first position in which said chamber receives sand and binder material and a second position in which the intermixed contents of the chamber are ready for evacuation from said housing, said housing being arranged to cover a predetermined distance during movement between said first and second positions;
- a carrier for said tool;
- means for cleaning said chamber;
- and means for securing said cleaning means to said carrier;
- said cleaning means being spaced apart from said tool a distance which matches said predetermined distance.
Dependencies are inferred from the claim text.