Chalk board eraser

Details Chalk board eraser Chalk board eraser

1976-11-22

1978-03-28

Hornsby, Harvey C.

Brushing, scrubbing, and general cleaning

Machines

Wiping

15121, 15 48, A47L 1104

Patent

active

040806839

ABSTRACT:
A self-cleaning hand-held chalk board eraser is disclosed which includes a chalk trough for catching and collecting the loose chalk from a chalkboard, a roller, the outer surface of which is made of suitable chalk-erasing material, and a brush mounted in the eraser to remove the loose chalk from the roller material in such a way that the loose chalk becomes trapped in the chalk trough.

REFERENCES:
patent: 602266 (1898-04-01), Peck
patent: 1487052 (1924-03-01), Enomoto
patent: 2026414 (1935-12-01), Burch

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