Motar mixing drum

Abstract

A horizontally oriented mortar mixing drum 11 fabricated of polyethylene material having an elemental cylindrical segment opening through which mortar materials to be mixed may be deposited into or poured from. A perimeter frame having base elemental frame member 15, diametric wall frame members 16 and polyethylene grate 20 is provided for enhancing resistance to torsional stress on drum 11. Wear resistant liner 12 and side panels 13 and 14 cover the interior surface of drum 11. Paddle shaft 18 is rotatably and axially supported within drum 11 and has paddle stubs 28 attached to and extending radially therefrom. Polyethylene mixing paddles 19 are sleeved onto paddle stubs 28 to complete improved mortar mixing drum assembly 10.

What is claimed is: 
     
       1. In an improved mortar mixer having a generally horizontally oriented cylindrical mortar drum with generally vertical and circular end walls, and paddle means rotatably and axially secured therein, and paddle rotation means, wherein the improvement comprises: said drum being molded from a polyethylene material, said drum further having an elemental cylindrical segment opening through which material to be mixed may be deposited into or poured from said drum;   an elemental perimeter frame member positioned in elemental, external, contact with said cylindrical drum opposite the elemental segment opening; and   a pair of diametric end wall frame members each in diametric external contact with an end wall and attached to the corresponding end of the elemental perimeter frame.   
     
     
       2. The improved mortar mixer of claim 1, wherein the paddle means further comprises: a paddle shaft rotatably and axially secured within said drum, and attached for rotation to said paddle rotation means;   a plurality of paddle stubs attached to and radially extending from said paddle shaft; and   a plurality of rectangular mixing paddles fabricated of polyethylene crosslink each attached to a paddle stub.   
     
     
       3. The improved mortar mixer of claim 2 which further comprises a hollow sleeve attached to and extending from said rectangular paddle for sleeved engagement with a paddle stub. 
     
     
       4. The improved mortar mixer of claim No. 2 which further comprises a liner of wear resistant, ultra high molecular weight polyethylene, attached to and covering the interior surfaces of said drum. 
     
     
       5. The improved mortar mixer of claim No. 4 wherein said wear resistant liner is removably attached to and covering the interior surfaces of said drum. 
     
     
       6. The improved mortar mixer of claim 1 which further comprises an elemental grating member spanning a portion of the elemental segment opening and attached at each end of the diametric end wall frame member. 
     
     
       7. The improved mortar mixer of claim 6 wherein said elemental grating member is fabricated of polyethylene. 
     
     
       8. The improved mortar mixer of claim No. 7, wherein the paddle means further comprises: a paddle shaft rotatably and axially secured within said drum, and attached for rotation to said paddle rotation means;   a plurality of paddle stubs attached to and radially extending from said paddle shaft; and   a plurality of rectangular mixing paddles fabricated of polyethylene crosslink each attached to a paddle stub.   
     
     
       9. The improved mortar mixer of claim 8 which further comprises a hollow sleeve attached to and extending from said rectangular paddle for sleeved engagement with a paddle stub. 
     
     
       10. The improved mortar mixer of claim 6 which further comprises a liner of wear resistant, ultra high molecular weight polyethylene, attached to and covering the interior surfaces of said drum. 
     
     
       11. The improved mortar mixer of claim 10 wherein said wear resistant liner is removably attached to and covering the interior surfaces of said drum. 
     
     
       12. The improved mortar mixer of claim 1 which further comprises a liner of wear resistant, ultra high molecular weight polyethylene, attached to and covering the interior surfaces of said drum. 
     
     
       13. The improved mortar mixer of claim No. 12 wherein said wear resistant liner is removably attached to and covering the interior surfaces of said drum. 
     
     
       14. In an improved mortar mixer having a generally horizontally oriented cylindrical mortar drum with generally vertical and circular end walls, and paddle means rotatably and axially secured within the drum, and paddle rotation means, wherein the improvement comprises: said drum being molded from a polyethylene material, said drum further having an elemental cylindrical segment opening through which material to be mixed may be deposited into or poured from the drum;   a liner of wear resistant, ultra high molecular weight polyethylene plastic, attached to and covering the interior surfaces of said drum.   
     
     
       15. The improved mortar mixer of claim 14 wherein said wear resistant liner is removably attached to and covering the interior surfaces of said drum. 
     
     
       16. An improved mortar mixer having a generally horizontally oriented cylindrical mortar drum with generally vertical and circular end walls, and paddle rotation means, an improvement which comprises: a paddle shaft rotatably and axially secured within said drum, and attached for rotation to said paddle rotation means;   a plurality of paddle stubs attached to and radially extending from said paddle shaft; and   a plurality of rectangular mixing paddles fabricated of polyethylene crosslink each attached to a paddle stub.   
     
     
       17. The improved mortar mixer of claim 16 wherein said paddles further comprise: a rectangular paddle for mixing mortar; and   a hollow sleeve attached to and extending from said rectangular paddle for sleeved engagement with a paddle stub. .Iadd.18. An improved mortar mixer having a generally horizontally oriented cylindrical mortar drum with generally vertical and circular end walls, and paddle means rotatably and axially secured therein, and paddle rotation means, carried by a mortar mixer trailer frame wherein the improvement comprises:   said drum being molded from a polyethylene material, said drum further having an opening through which material to be mixed may be deposited into or poured from said drum;   perimeter frame means having three elements, including a pair of diametric end wall frame members and a third element being connected therebetween, spanning the length of said drum, for counteracting the torsional moments   
     
     
        created by mixing mortar. .Iaddend. .Iadd.19.  The improved mortar mixer of claim 18 wherein the third element of the perimeter frame means comprises an elemental frame member being attached to said drum generally opposite the drum opening and to each end wall frame member. .Iaddend. .Iadd.20. The improved mortar mixer of claim 18 wherein the third element of the perimeter frame means comprises a grate member being attached between said drum end walls and to each end wall frame member. .Iaddend. .Iadd.21. The improved mortar mixer of claim 20 further comprising stop means interacting with said drum to counteract torsional forces created by 
     
     
        mixing mortar. .Iaddend. .Iadd.22.  An improved mortar mixer having a generally horizontally oriented cylindrical mortar drum with generally vertical and circular end walls, and paddle means rotatably and axially secured therein, and paddle rotation means, carried by a mortar mixer trailer frame wherein the improvement comprises: said drum being molded from a polyethylene material, said drum further having an opening through which material to be mixed may be deposited into or poured from said drum;   perimeter frame means having three elements, including a pair of diametric end wall frame members and a third element spanning the length of said drum, for counteracting the torsional moments created by mixing mortar, wherein the third element of the perimeter frame is defined by the mortar mixer trailer frame and a pair of cam stops disposed thereon which couple with the diametric end wall frame members and thereby resist torsional stress imparted to the drum by mixing mortar. .Iaddend. .Iadd.23. An improved mortar mixer having a generally horizontally oriented cylindrical mortar drum with generally vertical end walls, and paddle means rotatably and axially secured therein, and paddle rotation means, carried by a mortar mixer trailer frame wherein the improvement comprises:   said drum being molded from a polyethylene material, said drum further having an opening through which material to be mixed may be deposited into or poured from said drum; and   a diametric end wall reinforcing supporting frame member secured to each of the generally vertical end walls, each end wall reinforcing supporting frame member being fabricated of a material which is different from the polyethylene material of said drum. .Iaddend. .Iadd.24. The improved mortar mixer of claim 23 wherein the different frame member material is metal. .Iaddend. .Iadd.25. The improved mortar mixer of claim 23 wherein each of the diametric end wall reinforcing supporting frame members includes a drum shaft bearing assembly through which a paddle rotation shaft is received. .Iaddend. .Iadd.26. The improved mortar mixer of claim 23 further comprising stop means interacting with the drum and trailer frame for restricting rotation of the drum when the paddle means is being rotatably driven by the paddle rotation means. .Iaddend. .Iadd.27. The improved mortar mixer of claim 23 further comprising a cam stop engaging between the trailer frame and at least one of the end wall reinforcing supporting frame members to restrict rotation of the drum upon actuation of the paddle rotation means. .Iaddend. .Iadd.28. The improved mortar mixer of claim 23 further comprising a cam stop connected to at least one of the end wall reinforcing supporting frame members, the cam stop being positioned to engage with the trailer frame to restrict rotation of the drum upon actuation of the paddle rotation means. .Iaddend. .Iadd.29. The improved mortar mixer of claim 23 wherein the diametric end wall reinforcing members are secured externally of the drum to the drum end walls. .Iaddend. .Iadd.30. The improved mortar mixer of claim 23 wherein the diametric end wall reinforcing members are longitudinally elongated. .Iaddend. .Iadd.31. The improved mortar mixer of claim 23 wherein the generally cylindrical mortar drum has a height when said opening is positioned generally upward with the drum being positioned in a mixing position, the diametric reinforcing frame members having longitudinal lengths which are substantially equal to the height and extending longitudinally therealong. .Iaddend. .Iadd.32. The improved mortar mixer of claim 23 further comprising a gate frame member which covers the opening, the gate frame member connecting with each of the diametric end wall reinforcing members. .Iaddend. .Iadd.33. The improved mortar mixer of claim 23 wherein the different frame member material is metal, the mortar mixer further comprising a cam stop engaging between the trailer frame and at least one of the end wall reinforcing supporting frame members to restrict rotation of the drum upon actuation of the paddle rotation means. .Iaddend. .Iadd.34. The improved mortar mixer of claim 23 wherein the different frame member material is metal, the mortar mixer further comprising a cam stop connected to at least one of the end wall reinforcing supporting frame members, the cam stop being positioned to engage with the trailer frame to restrict rotation of the drum upon actuation of the paddle rotation means. .Iaddend. .Iadd.35. The improved mortar mixer of claim 23 wherein the different frame member material is metal, and the diametric end wall reinforcing members are secured externally of the drum to the drum end walls. .Iaddend. .Iadd.36. The improved mortar mixer of claim 23 wherein the different frame member material is metal, and the diametric end wall reinforcing members are longitudinally elongated. .Iaddend. .Iadd.37. The improved mortar mixer of claim 23 wherein the different frame member material is metal, the generally cylindrical mortar drum has a height when said opening is positioned generally upward with the drum being positioned in a mixing position, the diametric reinforcing frame members having longitudinal lengths which are substantially equal to the height and extending longitudinally therealong. .Iaddend. .Iadd.38. The improved mortar mixer of claim 23 wherein the diametric end wall reinforcing members are longitudinally elongated, and each of the diametric end wall reinforcing supporting frame members includes a drum shaft bearing assembly through which a paddle rotation shaft is received. .Iaddend. .Iadd.39. The improved mortar mixed of claim 23 wherein the generally cylindrical mortar drum has a height when said opening is positioned generally upward with the drum being positioned in a mixing position, the diametric reinforcing frame members having longitudinal lengths which are substantially equal to the height and extending longitudinally therealong, and the different frame member material is metal. .Iaddend. .Iadd.40. The improved mortar mixer of claim 23 wherein the different frame member material is metal, the diametric end wall reinforcing members being secured externally of the drum to the drum end walls, and the mortar mixer further comprising a cam stop engaging between the trailer frame and at least one of the end wall reinforcing supporting frame members to restrict rotation of the drum upon actuation of the paddle rotation means, the diametric end wall reinforcing members are secured externally of the drum to the drum end walls.   
     
     
        .Iaddend. .Iadd.41.  An improved mortar mixer having a generally horizontally oriented cylindrical mortar drum with generally vertical end walls, and the paddle means rotatably and axially secured therein, and paddle rotation means, carried by a mortar mixer trailer frame wherein the improvement comprises: said drum being molded from a polyethylene material, said drum further having an opening through which material to be mixed may be deposited into or poured from said drum, the generally cylindrical mortar drum having a height when said opening is positioned generally upward with the drum being positioned in a mixing position;   a diametric end wall reinforcing supporting frame member secured externally to each of the generally vertical end walls, each end wall reinforcing supporting frame member being fabricated of metal, each supporting frame member being longitudinally elongated and having longitudinal lengths which are substantially equal to the drum height and extending longitudinally therealong, each diametric end wall reinforcing supporting frame member including a drum shaft bearing assembly through which a paddle rotation shaft is received; and   a cam stop engaging between the trailer frame and at least one of the end wall reinforcing supporting frame members to restrict rotation of the drum   
     
     
        upon actuation of the paddle rotation means. .Iaddend. .Iadd.42.  The improved mortar mixer of claim 41 wherein the cam stop is connected to one of the end wall reinforcing supporting frame members. .Iaddend.