Conveyors – chutes – skids – guides – and ways – Rollerways – Submerging and rising
Patent
1976-04-30
1977-08-30
Blunk, Evon C.
Conveyors, chutes, skids, guides, and ways
Rollerways
Submerging and rising
B65G 1300
Patent
active
040448762
ABSTRACT:
A gravity-type roller conveyor having a plurality of rollers rotatably supported by axles which extend substantially horizontally. The axles are supported at one end thereof by a support device which extends longitudinally along one side of the conveyor and permits the axles, and hence the rollers, to pivot vertically through a small angle about said one side of the conveyor. An actuating device is disposed adjacent and extends longitudinally along the other side of the conveyor, which actuating device supports the other ends of the axles thereon for vertically lifting and lowering these ends through a limited extent, thereby causing the axles and hence the rollers to pivot about said one end. The actuating device includes an elongated intermediate support member extending longitudinally along the conveyor and having the other ends of the axles positioned thereon, which intermediate support member in turn is positioned on a pulsating actuating member, particularly an inflatable elongated hose. The hose is supplied with pressurized fluid, particularly air, in a pulsating manner to cause periodic and intermittent raising and lowering of the intermediate support member, and hence of the rollers. An elongated stationary brake member is positioned below the rollers adjacent said other ends of the axles, which brake member extends longitudinally of the conveyor and frictionally engages the rollers to positively stop same when the intermediate support member is periodically moved into its lowered position.
REFERENCES:
patent: RE22843 (1947-02-01), Porter
patent: 2979177 (1961-04-01), Sullivan
patent: 3108671 (1963-10-01), Fuka et al.
patent: 3130829 (1964-04-01), Long
patent: 3724642 (1973-04-01), De Good
patent: 3860106 (1975-01-01), Cooley
Blunk Evon C.
Rowland James L.
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