Conveyors: power-driven – Conveyor section – Pusher conveyor and separate load support surface
Patent
1976-08-23
1978-04-04
Blunk, Evon C.
Conveyors: power-driven
Conveyor section
Pusher conveyor and separate load support surface
198772, B65G 2508, B65G 4700
Patent
active
040821781
ABSTRACT:
A reciprocating harpoon-type conveyor for transporting swarf-like material along a conveyor trough is provided with non-jamming barbs each of which comprises a multi-faced member secured to the inside surface of the upwardly extending walls of the conveyor trough. Each barb has an inwardly-slanted feed surface which increasingly projects into the conveyor trough in the downstream direction and a rearwardly slanted retaining surface which extends upwardly in the upstream direction and away from the bottom of the trough. An upstream edge portion and a downstream edge portion of each barb substantially merge with an upstanding wall of the conveyor trough. The feed surface is adapted for slidable passing of swarf-like material thereover as the material is moved forwardly in the conveyor. The slanted retaining surface is adapted for engaging and retaining a portion of the swarf-like material in place as the harpoon is retracted from a forward position to a rearward position during return stroke. Relatively large pieces of material that could jam between a barb and the harpoon during the return stroke are deflected upwardly by the rearwardly slanted retaining surface upon contact therewith.
REFERENCES:
patent: 2832458 (1958-04-01), Ferguson et al.
patent: 3828920 (1974-08-01), Becker et al.
Blunk Evon C.
Prab Conveyors, Inc.
Valenza Joseph E.
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