Classifying – separating – and assorting solids – Sifting – Elements
Patent
1977-09-06
1979-10-09
Halper, Robert
Classifying, separating, and assorting solids
Sifting
Elements
209367, 74 61, B07B 142
Patent
active
041705491
ABSTRACT:
A vibrating screen apparatus of the type wherein bearing housing discs and associated gears are mounted on self-aligning bearings which are supported by fixed internal spindles, with the gears centered on the bearings, and hubs connect the bearing housing discs to shafts extending through the spindles. The screen apparatus has a plurality of unbalanced shaft assemblies to impart vibratory movement to screens and are adjusted as to the angle of stroke of vibration by adjusting, relative to one shaft assembly, gearing associated with that shaft assembly. In one embodiment, a cam crank turns a bearing housing disc relative to an outer gear mounted thereon and a second cam crank limits such turning. In a second embodiment, a pinion is maually turned to turn a driving gear relative to a bearing housing disc. In a third embodiment, a pair of eccentric shafts are journaled in pairs of self-aligning bearings and are drivingly interconnected by a pair of gears keyed to the shafts, one of the gears being adjustably keyed to its shaft to adjust the angle of stroke.
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Halper Robert
Nemmers James C.
Simmons Haven E.
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