Abstract: A mixer particularly designed for light, domestic use is provided. The mixer includes a base frame, a mixing drum, and a handle, all of which are readily assembled and disassembled for easy transportation, even in an automobile. The drum is supported on the base frame with a three-point suspension, including an axle rotatably carried by the base frame and two rollers on the base frame which engage the drum in a position spaced from the axle toward a discharge opening of the drum. The drum is of one-piece construction and has a ring gear formed of integral, circumjacent teeth, with the axis of rotation of the drum and the gear being at an angle to the horizontal. An electric motor is mounted on the base frame directly below the drum and has a drive shaft parallel to the axis of rotation of the drum and gear with a pinion gear engagable with the integral, circumjacent drum teeth. The drum can be readily lifted off the base frame and the handle also can separated therefrom.

Abstract: A gear guard is provided and specifically a guard for a pinion gear which meshes with a larger gear. The guard is specifically designed for use with a cement mixer and includes a U-shaped portion extending around part of the pinion gear and an elongate portion extending therefrom along a ring gear on the mixing drum in a direction from the U-shaped portion opposite to the direction in which the ring gear rotates.

Abstract: A switch harness is provided for a cement mixer. The cement mixer has a motor housing which encloses an electric motor and the drive components for the mixer drum. A switch harness is located in the housing and includes an on-off motor switch which is accessible outside of the housing. The harness also has a power cord extending outside the housing for connection with an extension cord. The switch harness has an electrical outlet within the housing for receiving the motor cord.

Abstract: A portable cement mixer is provided with an improved supporting frame. The supporting frame includes a first, generally triangularly-shaped end frame comprising two upwardly-converging struts and intermediate cross struts. The second end frame comprises a single upright member. A transverse strut connects a central portion of the cross struts of the first end frame with an intermediate portion of the upright strut of the second end frame. The transverse strut is of rectangular cross section but varying in width and thickness from one end to the other. The new supporting frame is of simple construction and is easier to assemble. It is also sturdier and provides a three-point support for the mixer which can be more readily adapted to uneven ground.