Abstract: A portable conveyor having a pair of rear wheels which support the lower end of the conveyor and a pair of caster wheels are spaced forwardly from the rear wheels and are carried by a horizontal axle. An adjustable linkage interconnects the axle and the conveyor and a drive mechanism is operably connected to the linkage and acts to vary the angularity of the linkage and thus change the inclination of the conveyor. The drive mechanism includes a lead screw which is threaded to a nut that is operably connected to the conveyor. The lead screw carries a worm gear which is engaged with a worm that is journalled for rotation in a thrust bar housing attached to the linkage. A driven shaft is connected to the worm and is constructed to be connected to the drive shaft of a reversible, power-operated hand drill. Operation of the high speed drill acting through the worm gear and screw system will rapidly raise and lower the conveyor.

Abstract: An engine mounting construction for a portable conveyor. The conveyor includes a frame and a conveyor belt is mounted for travel on the frame. A gasoline engine is secured to a skid and the skid is removably mounted on a support that is pivoted to the conveyor frame through a four-bar linkage. The connection between the skid and the support consists of a pair of open ended slots on the skid, which engage locating pins on the support, plus a pair of locating pins on the support which are received in holes in the skid. A manually operated clamp secures the skid to the support. Installation of the skid on the support will effect engagement of a coupling on the engine drive shaft with a coupling on a driven shaft that is operably connected to the drive roll for the conveyor belt. The four-bar linkage enables the engine to be moved arcuately about the axis of the conveyor drive roll, while maintaining the engine in generally the same orientation with respect to a horizontal plane.

Abstract: A portable conveyor assembly comprising an inclined conveyor having a lower end and an upper end. A pair of rear wheels support the lower end of the conveyor and a pair of caster wheels are spaced forwardly from the rear wheels and are suspended from a horizontal axle through vertical pivot shaft so that the caster wheels can freely rotate about the pivot shafts. An adjustable linkage interconnects between the axle and the conveyor, and a lead screw mechanism is operably connected to the linkage and acts to vary the angularity of the linkage and thus change the angle of inclination of the conveyor. A mechanism is associated with the linkage to prevent rotation of the axle and maintain the caster wheel pivot axes in a vertical attitude as the angle of inclination of the conveyor is changed.