Automatic chalk ash cleaner

Details Automatic chalk ash cleaner Automatic chalk ash cleaner

1993-04-02

1994-01-04

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Brushing

15 884, A46B 1302

Patent

active

052748693

ABSTRACT:
Disclosed is an automatic chalk ash cleaner including an elongated casing horizontally fastened to a blackboard at the bottom and covered with a wire netting cover, a brush assembly driven by a power drive through a transmission mechanism to sweep chalk ash away from the erasers placed on the wire netting cover and to sweep out fallen chalk ash.

REFERENCES:
patent: 1483667 (1924-02-01), Landreth et al.
patent: 1552713 (1925-09-01), Leary
patent: 1619899 (1927-03-01), Ward
patent: 1802587 (1931-04-01), Tavender et al.
patent: 3246754 (1966-04-01), Sackett
patent: 4392268 (1983-07-01), Bueno

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