Patent Document ID: 4368046
Application ID: 06285841
Patent Status: 1

Claim One:
1. Apparatus for teaching time recognition comprising: (A) a clock drive movement including an hour shaft and coaxial minute shaft driven thereby, (B) a plurality of clock face means, each one of such clock face means being associatable with said clock drive movement, having an outer circumferentially extending scale marked in 60 equal increments and having an inner circumferentially extending scale marked in 12 equal increments, said inner scale being radially spaced from said outer scale and having each increment thereof radially alignable with a different one of every five increments of said outer scale, each one of such clock face means of said plurality having a different such radial spacing between such outer scale and such inner scale, (C) a minute hand associated with said minute shaft and having a length adapted to indicate specific locations along such outer scale, and (D) hour hand means associatable with said hour shaft and having the capacity to be extended and retracted in length for adopting said hour hand means to indicate respective specific locations along a different prechosen one of said inner scales in said clock face plurality.