Abstract: An improved hub-locking device for conveyor pulleys including a spherically shaped collet having a centrally located bore for receiving a shaft, an axially aligned slot extending through one side thereof permitting compression of the collet on the shaft, and a plurality of radially extending lugs, a hub attached to the end of the pulley and having an axially aligned tapered aperture for partially receiving the collet with the shaft therein and a plurality of radially extending recesses for receiving the collet lugs, a clamping ring having a tapered aperture for partially fitting over the collet, and a plurality of bolts for passing through holes in the clamping ring, for threading into the hub and for drawing the clamping ring toward the hub compressing the collet therebetween with the lugs within the recesses, and causing the collet to compress and engage the shaft, the hub and the clamping ring.

Abstract: A positive drive system including a drive cable consisting of a flexible line means having a plurality of regularly spaced nodules rigidly attached along its length, and a positive drive sheave having a curved surface configuration receptive to the drive cable's nodules for providing a positive, nonslip rotary drive engagement between the drive cable and the sheave.

Abstract: Ribbing configuration for use on a tracking roller for positive belt traction in which the roller's cylindrical surface has shallow V-shaped grooves defining lands which spiral oppositely outward from the center of the roller.

Abstract: An improved hub-locking device for conveyor pulleys including a spherically shaped collet having a centrally located bore for receiving a shaft and having an axially aligned slot extending through one side thereof permitting compression of the collet on the shaft, a hub attached to the end of the pulley and having an axially aligned tapered aperture for partially receiving the collet with the shaft therein, a clamping ring having a tapered aperture for partially fitting over the collet and a plurality of bolts for passing through holes in the clamping ring, for threading into the hub and for drawing the clamping ring toward the hub compressing the collet therebetween, causing the collet to compress and engage the shaft, the hub and the clamping ring.

Abstract: A closed loop conveyor system for transporting loads from one point to another and including a drive pulley and a return pulley, either or both pulleys having a plurality of cleat receiving annular grooves, and a conveyor belt having an exterior load carrying surface, and an interior surface with a plurality of longitudinal rows of cleats protruding therefrom, the belt being disposed around the drive and return pulleys and adapted to be driven by the drive pulley. The interaction between the pulley grooves and cleats provides superior drive force transmission from pulley to belt and provides positive belt alignment even under severe off-center or side load conditions.

Abstract: A closed loop conveyor system comprising a cylindrical drive pulley and a cylindrical return pulley, each including at least one groove having a generally W-shaped transverse cross section, and a conveyor belt disposed around the drive pulley and return pulley and having a carcass with an exterior load-carrying surface and an interior surface that includes at least one groove-engaging rib formed in the direction of belt travel. The bottom surface of the rib has a transverse cross section in the shape of an inverted V serving to bifurcate the rib into two wedging portions which engage and are spread apart by the bottom wall of the groove, thereby causing the rib to lockingly mate with the groove.

Abstract: Spirally-tending ribbing on the medial and angular idler rollers of a troughing conveyer including waveform ribbing on the medial roller and normal ribbing on the inner halves of the angular idler rollers for spreading the belting outwardly from center and oppositely-tending spiral ribbing on the outer halves of the angular idler rollers due to lateral shifting of the center of gravity of the material on the belting toward one or the other sides of the trough-formed belting. The oppositely-tending spiral ribbing being of a scalloped type affording more positive traction against the belting especially upon shifting of the load of material on the belt toward an edge thereof over one or the other of the angular idler roller. For extreme cases of such outward climbing of the belting, a feather touch idler roller is set wedge-like relative to the outer halves of the angular idler rollers for effecting greater traction of the belt edge against the latter.