Patent Model - Blackboard and Map-Case

Maker and role
William Herider (b.1821, d.1899), Patentee
Production date
Sep 22 1863
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Object detail

9 x 12 x 2" (22.9 x 30.5 x 5.1cm)
Herider's patent "consists in the employment or use of a case constructed of rectangular form, and having a door at its front side, which may comprise one-half the length of the front of the case, the door being hung upon hinges or arranged so as to slide, and the whole of the front of the case being painted black so as to serve as a blackboard, while the interior of the case at its top and bottom is provided with guides or grooves on which frames or slides are fitted and on which maps are secured..." (Patent Number 40,035)
Object number
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