Education and demonstration – Telling time or calendar reading
Patent
1990-06-13
1991-07-09
Apley, Richard J.
Education and demonstration
Telling time or calendar reading
368228, 368232, D10126, G04B 1906, G04B 1908, G09F 1912
Patent
active
050301047
ABSTRACT:
A device for teaching reading and passage of time which comprises a clock face composed of not less than three planes having two separate numerical scales circumferentially and concentrically disposed therein; the outer minute scale on the highest plane represented by 60 sector shapes, each sharing a common border line set at increments of 6 degrees beginning at zero degrees at the top center of the circular scale; each minute sector shape containing a plurality of minute numerals centrally spaced within each minute sector shape and directly in line with each border line interval; the inner hour scale on the next lower plane represented by 12 sector shapes each sharing a common border line set at increments of 30 degrees beginning at zero degrees at the top center of the circular scale; each hour sector containing numerals 1 to 12 centrally spaced within each hour sector and directly in line with each border line interval; each minute and hour sector shape graphically skewed; and respective hour and minute hands mounted centrally and pivotally on the lowest plane, the hour hand raised to a level of the next lower plane and being of a length as to be within the outer periphery of the lowest plane and the minute hand raised to a level of the highest plane, and being of a length as to be within the outer periphery of the next lower plane.
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R. A. Strong, Star Tracker An Aid for Use in Learning About Time and Space, Allentown Press, Md., 1969, pp. 1-7.
Apley Richard J.
Greenberg Barbara R.
Horowitz Karen G.
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