Music box with instructional data tables

Music – Instruments – Automatic

Patent

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Details

235 86, 235125, 434197, 434426, G10F 106

Patent

active

047442824

ABSTRACT:
In one embodiment, the musical box includes a box-like support structure and a music device disposed in the interior of the structure. A plurality of flexible continuous webs are sized to wrap around the outside of the structure. Each web has, along its outside surface, indicia representative of a particular mathematical data table, such as a multiplication table. One column of the table indicates the mathematical resultant of the remaining laterally displayed data. The resultant is disposed proximate a side of the support structure. A controllably movable strip or continuous web has a window and the window is sized to reveal one mathematical resultant. This continuous windowed web is driven by a gear and knob actuator.

REFERENCES:
patent: 1136673 (1915-04-01), Heron
patent: 1371847 (1921-03-01), Brandvein
patent: 1821184 (1931-09-01), Langos
patent: 3750520 (1973-08-01), Inoue

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