Mortar mixing apparatus

• US 7,784,996 B1
• Filed: 01/17/2007
• Issued: 08/31/2010
• Est. Priority Date: 01/17/2007
• Status: Active Grant

• Current Assignee: Thomas J. Cummer
• Original Assignee: Thomas J. Cummer
• Inventors: Cummer, Thomas J.
• Primary Examiner(s): Cooley; Charles E
• Application Number:
  US11/654,348
• Time in Patent Office: 1,322 Days
• Field of Search: 366 14- 15, 366/20, 366 27- 28, 366/35, 366/37, 366/38, 366/49, 366/50, 366/61, 366 64- 66, 366/153.2, 366/153.3, 3661552-1572, 366/158.4, 366/186, 366192-193, 366297-300, 366319-320, 366/51
• US Class Current: 366/50
• CPC Class Codes: B01F 27/0723 oblique with respect to the rotating axis
• CPC Class Codes: B01F 27/0726 having stirring elements connected to the stirrer shaft each by a single radial rod, other than open frameworks
• CPC Class Codes: B01F 27/70 with paddles, blades or arms
• CPC Class Codes: B01F 35/32045 Hydraulically driven
• CPC Class Codes: B01F 35/752 with arrangements for converting the mechanism from mixing to discharging, e.g. by either guiding a mixture back into a receptacle or discharging it
• CPC Class Codes: B01F 35/754551 using helical screws
• CPC Class Codes: B28C 5/0893 Mobile mixing devices, e.g. hanging
• CPC Class Codes: B28C 5/1223 discontinuously operating mixing devices, e.g. with consecutive containers
• CPC Class Codes: B28C 5/148 the stirrer shaft carrying a plurality of radially extending mixing bars
• CPC Class Codes: B28C 7/064 Supply from sacks; Sack openers
• CPC Class Codes: B28C 7/167 by means of a screw conveyor

Abstract

A mortar mixing apparatus includes a screw conveyor disposed below the bottom of a mixing container in which a selectively operable agitator is located. An elongate opening in the bottom of the mixing container is open into the housing of the screw conveyor so that mixed mortar may flow into the screw conveyor. The screw conveyor may be rotated in a reverse direction to force materials upward into the mixing container, or it may be operated in a forward direction to convey mortar away from the mixing container. The agitator and the screw conveyor are independently driven by hydraulic motors.

Claims

1. Mortar mixing apparatus comprising

a base on which a mixing container is supported,

a screw conveyor disposed below the mixing container,

the mixing container having a bottom opening communicative with the screw conveyor,

a first motor operatively coupled to the screw conveyor,

the screw conveyor selectively operable by the first motor in a clockwise rotation or in a counterclockwise rotation,

the mixing container further comprising an agitator assembly centrally located therein,

the agitator assembly coupled to a second motor,

the second motor selectively operable independently of the first motor,

the agitator assembly selectively operable to intermix mortar ingredients located in the mixing container while the screw conveyor is operated to force mortar ingredients in the screw conveyor into the mixing container,

an outer periphery of the agitator assembly passes through an elongate longitudinal opening at a top of a tubular housing of the screw conveyor.

2. The mortar mixing apparatus of claim 1 wherein

the mixing container is selectively rotatable upon the base.

3. The mortar mixing apparatus of claim 1 wherein

the base comprises at least two spaced apart box tubes,

the box tubes adapted to receive tines of a fork lift machine,

whereby the mortar mixing apparatus may be elevated by the fork lift machine.

4. The mortar mixing apparatus of claim 1 wherein

the mixing container is generally a cylinder having closed ends,

the cylinder having a substantially horizontal longitudinal axis.

5. The mortar mixing apparatus of claim 1 wherein

a control pendant is coupled to the first motor and to the second motor,

whereby operation of the first motor and of the second motor may each be independently controlled by a user entering commands upon the control pendant.

6. The mortar mixing apparatus of claim 1 wherein

an engine is supported on the mixing container,

a hydraulic pumping system operatively coupled to the engine,

the first motor is a hydraulic motor coupled to the hydraulic pumping system.

7. The mortar mixing apparatus of claim 1 wherein

an engine is supported on the mixing container,

a hydraulic pumping system operatively coupled to the engine,

the second motor is a hydraulic motor coupled to the hydraulic pumping system.

8. The mortar mixing apparatus of claim 1 wherein

the mixing container is selectively rotatable upon the base,

the base comprises at least two spaced apart box tubes,

the box tubes adapted to receive tines of a fork lift machine,

the mixing container having a generally cylindrical sidewall and closed ends,

the screw conveyor comprises a discharge duct communicative therewith,

a control pendant is coupled to the first motor and to the second motor,

an internal combustion engine is supported on the mixing container,

a hydraulic pumping system operatively coupled to the internal combustion engine,

each of the first motor and the second motor is a hydraulic motor coupled to the hydraulic pumping system,

the screw conveyor comprises a first segment disposed below the mixing container and a second segment disposed exterior of the mixing container,

the screw conveyor comprises a discharge duct communicative therewith,

a closure element is selectively operable to prevent passage of mortar through the discharge duct,

the bottom opening of the mixing container extends substantially the length of the mixing container.

9. Mortar mixing apparatus comprising

a base on which a mixing container is supported,

a screw conveyor disposed below the mixing container,

the mixing container having a bottom opening communicative with the screw conveyor,

a first motor operatively coupled to the screw conveyor,

the screw conveyor selectively operable by the first motor in a clockwise rotation or in a counterclockwise rotation,

the mixing container further comprising an agitator assembly centrally located therein,

the agitator assembly coupled to a second motor,

the second motor selectively operable independently of the first motor,

the agitator assembly selectively operable to intermix mortar ingredients located in the mixing container while the screw conveyor is operated to force mortar ingredients in the screw conveyor into the mixing container,

the screw conveyor comprises a first segment disposed below the mixing container and a second segment disposed exterior of the mixing container,

the first segment of the screw conveyor including an elongate opening in an enclosing housing thereof at an upper area thereof,

the elongate opening of the screw conveyor housing coincident with the bottom opening of the mixing container,

the elongate opening narrower than a diameter of the enclosing housing.

10. Mixing and transport apparatus for mortar comprising

a mixing container having an agitator rotatable therein,

means to selectively rotate the agitator,

an elongate opening at a bottom of the mixing container,

a screw conveyor disposed below the mixing container,

the screw conveyor communicative with the elongate opening of the mixing container,

the screw conveyor comprising a cylindrical housing and a powered screw disposed in the housing,

the housing of the screw conveyor having a slot at a top thereof,

the slot aligned with the elongate opening of the mixing container,

means to selectively rotate the screw in either a clockwise or a counterclockwise direction,

the screw rotated in a direction urging material in the screw conveyor housing into the mixing container when the agitator is rotated,

an upper cylindrical portion of the cylindrical housing of the screw conveyor is touchingly engaged with lower ends of sidewalls of the mixing container,

the lower ends of the sidewalls defining the slot at the top of the cylindrical housing of the crew conveyor,

the slot narrower than a diameter of the cylindrical housing.

11. The mixing and transport apparatus of claim 10 wherein

fork receiving tubes are mounted on the mixing container.

12. The mixing and transport apparatus of claim 10 wherein

the screw conveyor extends from below the mixing container.

13. The mixing and transport apparatus of claim 10 wherein

the screw conveyor extends from below the mixing container,

the screw conveyor extends the length of the mixing container.

14. Mixing and transport apparatus for mortar comprising

a mixing container having an agitator rotatable therein,

means to selectively rotate the agitator,

an elongate opening at a bottom of the mixing container,

a screw conveyor disposed below the mixing container,

the screw conveyor communicative with the elongate opening of the mixing container,

the screw conveyor comprising a cylindrical housing and a powered screw disposed in the housing,

the housing of the screw conveyor having a slot at a top thereof,

the slot aligned with the elongate opening of the mixing container,

means to selectively rotate the screw in either a clockwise or a counterclockwise direction,

the screw rotated in a direction urging material in the screw conveyor housing into the mixing container when the agitator is rotated,

an outer periphery of the agitator passes through the slot at the top of the housing of the screw conveyor when the agitator is rotated.

15. Mixing and transport apparatus for fluent masonry material comprising

a cylindrical mixing compartment into which components of the fluent masonry material may be placed to be intermixed,

a screw conveyor disposed below the cylindrical mixing compartment

the screw conveyor comprising a screw and a tubular housing,

the tubular housing having an interior in which the screw is rotatable,

an agitator centrally disposed in the mixing compartment to intermix the components of the fluent masonry material,

the agitator selectively operable independently of the screw,

the mixing compartment communicative with a length of the interior of the housing of the screw conveyor,

the screw of the screw conveyor selectively operable in a forward direction or in a reverse direction,

the screw urging material into the mixing compartment from the tubular housing when operated in the reverse direction,

the screw conveyor selectively operable in the reverse direction when the agitator is operated,

the mixing compartment comprises opposing semi-cylindrical sidewalls and opposing end walls,

the end walls disposed substantially vertically,

lower ends of the semi-cylindrical sidewalls defining an elongate slot therebetween,

the elongate slot disposed at a generally lowermost region of the mixing compartment,

the tubular housing of the screw conveyor including an elongate opening in alignment with the elongate slot of the mixing compartment,

the screw disposed exterior of the mixing compartment,

the elongate slot substantially narrower than a diameter of the tubular housing,

distal elements of the agitator pass through the elongate opening of the tubular housing of the screw conveyor when the agitator is rotated.

16. The mixing and transport apparatus for fluent masonry material of claim 15 wherein

the agitator is selectively driven by a first hydraulic motor,

the screw of the screw conveyor is selectively driven by a second hydraulic motor,

each of the first hydraulic motor and the second hydraulic motor being independently operable.

17. The mixing and transport apparatus for fluent masonry material of claim 16 wherein

a controller is coupled to each of the first hydraulic motor and the second hydraulic motor,

the controller selectively operable to cause operation of the first hydraulic motor,

the controller selectively operable to cause the second hydraulic motor to operate in a forward direction,

the controller selectively operable to cause the second hydraulic motor to operate in a reverse direction.

18. The mixing and transport apparatus for fluent masonry material of claim 15 wherein

the mixing compartment comprises opposing semi-cylindrical sidewalls and opposing end walls,

the end walls disposed substantially vertically,

lower ends of the semi-cylindrical sidewalls defining an elongate slot therebetween,

the elongate slot disposed at a generally lowermost region of the mixing compartment,

the tubular housing of the screw conveyor including an elongate opening in alignment with the elongate slot of the mixing compartment,

the screw disposed exterior of the mixing compartment.