Conveyer scraper with continuously applied constant surface pres

Details Conveyer scraper with continuously applied constant surface pres Conveyer scraper with continuously applied constant surface pres

1974-08-20

1976-04-13

Spar, Robert J.

Conveyors: power-driven

Conveyor system for arranging or rearranging stream of items

By laterally or vertically moving successive items in...

B65G 4500

Patent

active

039498662

ABSTRACT:
A rubber scraper is slidably received in a guide frame. A horizontal cross member supports the bottom edge of the scraper. Counterweight assemblies are attached to the ends of the cross member and function to raise the scraper through the frame toward the underside of the conveyor belt to be scraped. The counterweight assemblies each include a counterweight running in a downwardly curved guide so that, as the weight of the scraper diminishes due to wear, friction and the support of the curved guide acting on the weight gradually decreases the force with which the counterweight pulls on the cross member, thereby ensuring that the scraper applies a generally constant pressure against the belt.

REFERENCES:
patent: 3101837 (1963-08-01), Martin
patent: 3722667 (1973-03-01), Olson
patent: 3782534 (1974-01-01), Holleman

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