Education and demonstration – Means for demonstrating apparatus – product – or surface... – Block or like manually manipulatable object having indicia...
Patent
1990-11-09
1992-05-19
Weiss, John G.
Education and demonstration
Means for demonstrating apparatus, product, or surface...
Block or like manually manipulatable object having indicia...
40482, 446236, 434161, 434172, G09B 122, G09B 110
Patent
active
051143496
ABSTRACT:
An element for a didactic play, of the type capable of showing several surfaces carrying different representations, which may possibly be combined with the representations of other elements forming a set, in order to compose writings, images or the like, comprising a support, a prismatic body pivoted on the support and carrying on its faces some representations, and a control member carried by the support and capable, when operated, of acting on the prismatic body by causing a rotation thereof along the angle by which each face of the element is replaced by the subsequent face. The control member is formed by a push-button whose operation causes a rotation of the prismatic body in a preestablished direction by acting, by means of a pawl being a part of an inner operating member, onto an arrangement with escapement wheel carried by an end of the prismatic body. The set of such elements moreover includes a tray suitable for containing a number of elements, ordered by lines and columns.
REFERENCES:
patent: D29649 (1898-11-01), Stein
patent: 1194216 (1916-08-01), Morse
patent: 2049178 (1936-07-01), Samstag
patent: 3128100 (1964-04-01), Sinden
patent: 3219023 (1965-11-01), Ryan
patent: 3235976 (1966-02-01), Elliott et al.
patent: 4021939 (1977-05-01), May
patent: 4146978 (1979-04-01), Breslow
Thomas L.
Weiss John G.
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