Method of making reusable writing board and the product thereof

Details Method of making reusable writing board and the product thereof Method of making reusable writing board and the product thereof

1976-07-23

1977-10-04

Skogquist, Harland S.

Books, strips, and leaves

Strips

With platen

35 62, 281 30, B43L 112

Patent

active

040516091

ABSTRACT:
A reusable writing board of "slate board" is both improved and of lower cost, avoiding use of the usual separate black-cardboard piece stapled to a backing. In a single printing operation, which is needed for face-printing anyway, the "slate" or background surface is provided on the same piece of paperboard. After further machine steps, a final operation of gluing and folding produces the finished slate board with a decoratively-printed head panel glued to extend down protectively over the top edge of the plastic work sheet covering the printed background. If desired, educational or informative discs can be rotatably secured under the head fold. Also, if desired, an air pocket can be formed under the head fold such that after writing by impressions through the work sheet, a sudden slap on the cover of the air pocket will raise the work sheet pneumatically to erase the writing.

REFERENCES:
patent: 1904572 (1933-04-01), Trussell
patent: 2606041 (1952-08-01), Misiak
patent: 2818662 (1958-01-01), Payne
patent: 3435543 (1969-04-01), Slemmons
patent: 3943643 (1976-03-01), Fisher

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