Abstract: An axle assembly for use with a portable radial stacker which allows a single wheel set on each end of the axle assembly to be used to transport and operate the radial stacker. The wheel sets of the axle assembly can be pivoted and extended so that a width of the axle in the transport mode is less than a width of an axle in the operational mode.

Abstract: The invention pertains to a pulley for belt conveyors, particularly belt conveyors used in the conveying of stones, gravel, and the like wherein the pulley structure is self-cleaning of foreign matter received within the confines of the pulley to prevent belt damage. The pulley consists of a plurality of helically disposed webs spiralled about a rotatable shaft. A plurality of webs are defined upon the shaft on each side of the pulley central region wherein at least two separate webs define a set of multiple pitch helices, and each set is spiralled about the axis of rotation in an opposite direction wherein foreign matter received between the webs is moved to the pulley ends in a self-cleaning manner. A disc is utilized at the pulley central region to which the inner ends of the web sets are affixed and the periphery of the webs is of a greater axial dimension than the web plate to increase the belt surface loading area.

Abstract: A gravel processing system, preferably of the portable type, utilizing a plurality of screens and conveyors wherein the particle sizes of the finished product may be accurately regulated, and readily varied. Two screen boxes are mounted upon a frame, each box including a plurality of screens which are charged at their inner ends by a top-loading hopper having several outlets providing a versatility of screen charging. The vibrating screens discharge at their outer ends, and the conveyors located below the screens convey the fines from both screen boxes to a common discharge point. A chute and bypass system at the discharge end of one screen box permits the screen discharge to be selectively conveyed to one of several conveyors or chutes, for re-processing or re-crushing, and the apparatus of the system provides extraordinary versatility and particle size sorting and classification in a relatively concise apparatus.